commit 48e751c7c0f4e24c2fda5bfe2a76ec64036a4b34
Author: JPASilveira <joaopedroasilveira@gmail.com>
Date:   Fri May 22 11:08:01 2026 -0300

    Start Project, Create Models and Start Ports

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..8af972c
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+/gradlew text eol=lf
+*.bat text eol=crlf
+*.jar binary
diff --git a/.gitignore b/.gitignore
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index 0000000..c2065bc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,37 @@
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
diff --git a/agents.md b/agents.md
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--- /dev/null
+++ b/agents.md
@@ -0,0 +1,338 @@
+# 🤖 CoreSync — Agent Guidelines
+
+Este documento define a arquitetura, as regras de negócio e os padrões de código obrigatórios para o desenvolvimento do backend do **CoreSync**. Todo código gerado ou modificado deve obedecer estritamente às diretrizes abaixo.
+
+---
+
+## 🛠 Stack Tecnológico
+
+| Camada | Tecnologia |
+|---|---|
+| Linguagem | Groovy (Closures, Records, sintaxe enxuta) |
+| Runtime | Java 26 (toolchain configurado no Gradle) |
+| Framework | Spring Boot (Web, Security, Data MongoDB) |
+| Banco de Dados | MongoDB |
+| Cliente | React Native — comunicação exclusiva via JSON/REST + JWT stateless |
+
+---
+
+## 🏛 Arquitetura: Hexagonal (Ports & Adapters) + DDD
+
+O sistema é um **Monolito Modular** construído sobre **Arquitetura Hexagonal**. O objetivo é o isolamento absoluto da Regra de Negócio.
+
+### Regra de Ouro
+
+> As camadas `domain` e `application` são **100% agnósticas de framework**. Elas não conhecem Spring Boot, MongoDB nem HTTP. Tudo que for infraestrutura ou framework vive exclusivamente na camada `adapter`.
+
+### 📂 Estrutura de Pacotes Obrigatória
+
+Os pacotes são organizados por **módulo de negócio** (ex: `user`, `workout`, `session`). Dentro de cada módulo:
+
+```
+src/main/groovy/br/dev/jsilveira/coresync/[modulo]/
+├── domain/
+│   ├── model/               # Records Groovy — Agregados, Entidades e Value Objects
+│   └── exception/           # Exceções de negócio do módulo
+│
+├── application/
+│   ├── port/
+│   │   ├── in/              # Interfaces de entrada (Casos de Uso chamados pela API)
+│   │   └── out/             # Interfaces de saída (o que o domínio precisa do mundo externo)
+│   └── service/             # Implementa ports/in; consome ports/out
+│
+├── adapter/
+│   ├── in/web/              # Controllers REST + DTOs de entrada/saída
+│   └── out/persistence/     # Spring Data Repositories, Entities MongoDB, Mappers
+│
+└── config/                  # Classes @Configuration com definições de @Bean
+```
+
+---
+
+## 📜 Regras de Código
+
+### 1. Modelagem com Records (Imutabilidade)
+
+- Todas as Entidades, Agregados e Value Objects do domínio **devem ser `record` do Groovy**.
+- O estado **nunca é mutado diretamente**. Toda transição de estado produz uma nova instância do record (padrão *copy-on-write*).
+
+### 2. Validação no Construtor Compacto
+
+- Toda validação de invariantes de negócio ocorre **no construtor compacto do record**.
+- É **proibido** instanciar um objeto de domínio em estado inválido (IDs nulos, strings vazias, datas inconsistentes, dependências ausentes).
+- Violations devem lançar a **exceção de negócio específica do módulo** (nunca `IllegalArgumentException` genérica).
+
+### 3. Identificadores (UUID)
+
+- O banco de dados **não gera IDs**. Cada entidade possui seu próprio `UUID id`.
+- A geração do ID ocorre na camada **`application/service`** via `UUID.randomUUID()`, antes do envio ao adaptador de persistência.
+- Referências entre Aggregate Roots são feitas **exclusivamente por ID** — nunca aninhe objetos raiz dentro de outros.
+
+### 4. Zero Lombok
+
+- Lombok é **proibido**. Use os recursos nativos do Groovy:
+  - Construtores de mapa (`new Foo(bar: "x")`)
+  - Propriedades automáticas (`@groovy.transform.CompileStatic`)
+  - `@Slf4j` nativo do Groovy para logging
+  - `record` para imutabilidade
+
+### 5. Domínio Rico (Rich Domain)
+
+- O domínio **não deve ser anêmico**. Lógicas de cálculo, transições de estado, formatações e validações pertinentes à entidade ficam **dentro do próprio record**.
+- O `Service` orquestra; ele **não executa regras de negócio**.
+
+### 6. Services são POJOs
+
+- Classes de `application/service` **não recebem** `@Service` nem qualquer anotação do Spring.
+- São classes Groovy puras instanciadas como `@Bean` via uma classe `@Configuration` no módulo.
+- Dependências injetadas **exclusivamente pelo construtor**.
+
+### 7. Nomenclatura
+
+| Artefato | Convenção |
+|---|---|
+| Porta de entrada | `[Ação][Entidade]UseCase` (ex: `FinishSessionUseCase`) |
+| Porta de saída — leitura | `Load[Entidade]Port` |
+| Porta de saída — escrita | `Save[Entidade]Port` |
+| Porta de saída — remoção | `Delete[Entidade]Port` |
+| Serviço | `[Ação][Entidade]Service` |
+| Controller | `[Entidade]Controller` |
+| Entity (Mongo) | `[Entidade]Entity` |
+| DTO de entrada | `[Entidade]Request` |
+| DTO de saída | `[Entidade]Response` |
+
+### 8. Mapeamento entre Camadas
+
+- Conversão entre `DomainModel ↔ Entity` e `DomainModel ↔ DTO` ocorre em classes **Mapper dedicadas** em `adapter/out/persistence/` e `adapter/in/web/`, respectivamente.
+- Nunca exponha uma `Entity` fora do adaptador de persistência.
+- Nunca exponha um objeto de domínio diretamente em uma resposta HTTP.
+
+### 9. Tratamento de Erros
+
+- Exceções de negócio definidas em `domain/exception/` são capturadas por um `@ControllerAdvice` global no adaptador web.
+- O `@ControllerAdvice` traduz exceções para respostas HTTP adequadas (ex: `SessionException` → `400 Bad Request`).
+- O domínio **nunca conhece** códigos HTTP.
+
+### 10. Segurança e Autenticação
+
+- Toda autenticação é **stateless via JWT**.
+- O token é validado no adaptador (`adapter/in/web/`) antes de qualquer chamada ao caso de uso.
+- O `userId` extraído do token deve ser passado explicitamente como parâmetro ao caso de uso — nunca acessado diretamente de um contexto de segurança dentro da camada `application`.
+
+---
+
+## 💻 Exemplos de Código
+
+### Modelo de Domínio — `record` com Construtor Compacto
+
+**Local:** `session/domain/model/UserWorkoutSession.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.domain.model
+
+import br.dev.jsilveira.coresync.session.domain.exception.SessionException
+import java.time.LocalDateTime
+import java.util.UUID
+
+record UserWorkoutSession(
+        UUID id,
+        UUID userId,
+        UUID workoutDayId,
+        LocalDateTime startedAt,
+        LocalDateTime completedAt
+) {
+    // Construtor compacto: validação de invariantes de negócio
+    public UserWorkoutSession {
+        if (!id)     throw new SessionException("O ID não pode ser nulo")
+        if (!userId) throw new SessionException("O ID do usuário é obrigatório")
+        if (!workoutDayId) throw new SessionException("O ID do treino é obrigatório")
+        if (!startedAt) throw new SessionException("A data de início é obrigatória")
+
+        if (completedAt != null && completedAt.isBefore(startedAt)) {
+            throw new SessionException("A data de conclusão não pode ser anterior à data de início")
+        }
+    }
+
+    // Domínio Rico: transição de estado gera uma nova instância imutável
+    UserWorkoutSession finish(LocalDateTime time = LocalDateTime.now()) {
+        if (completedAt != null) throw new SessionException("A sessão já foi finalizada")
+        return new UserWorkoutSession(id, userId, workoutDayId, startedAt, time)
+    }
+
+    boolean isFinished() {
+        return completedAt != null
+    }
+}
+```
+
+---
+
+### Porta de Entrada (API)
+
+**Local:** `session/application/port/in/FinishSessionUseCase.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.application.port.in
+
+import java.util.UUID
+
+interface FinishSessionUseCase {
+    void execute(UUID sessionId, UUID requestingUserId)
+}
+```
+
+---
+
+### Porta de Saída (SPI)
+
+**Local:** `session/application/port/out/SaveSessionPort.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.application.port.out
+
+import br.dev.jsilveira.coresync.session.domain.model.UserWorkoutSession
+
+// O domínio declara o contrato; a implementação vive no adaptador
+interface SaveSessionPort {
+    void save(UserWorkoutSession session)
+}
+```
+
+**Local:** `session/application/port/out/LoadSessionPort.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.application.port.out
+
+import br.dev.jsilveira.coresync.session.domain.model.UserWorkoutSession
+import java.util.UUID
+
+interface LoadSessionPort {
+    UserWorkoutSession load(UUID sessionId)
+}
+```
+
+---
+
+### Serviço (Caso de Uso) — POJO Groovy
+
+**Local:** `session/application/service/FinishWorkoutSessionService.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.application.service
+
+import br.dev.jsilveira.coresync.session.application.port.in.FinishSessionUseCase
+import br.dev.jsilveira.coresync.session.application.port.out.LoadSessionPort
+import br.dev.jsilveira.coresync.session.application.port.out.SaveSessionPort
+import br.dev.jsilveira.coresync.session.domain.exception.SessionException
+import java.util.UUID
+
+// Sem @Service — instanciado via @Bean em SessionConfig
+class FinishWorkoutSessionService implements FinishSessionUseCase {
+
+    private final LoadSessionPort loadPort
+    private final SaveSessionPort savePort
+
+    FinishWorkoutSessionService(LoadSessionPort loadPort, SaveSessionPort savePort) {
+        this.loadPort = loadPort
+        this.savePort = savePort
+    }
+
+    @Override
+    void execute(UUID sessionId, UUID requestingUserId) {
+        def session = loadPort.load(sessionId)
+
+        // Autorização de negócio: o usuário só pode finalizar a própria sessão
+        if (session.userId() != requestingUserId) {
+            throw new SessionException("Usuário não autorizado a finalizar esta sessão")
+        }
+
+        // Regra de negócio encapsulada no domínio
+        def finishedSession = session.finish()
+
+        savePort.save(finishedSession)
+    }
+}
+```
+
+---
+
+### Entity de Banco (Adaptador de Persistência)
+
+**Local:** `session/adapter/out/persistence/entity/SessionEntity.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.adapter.out.persistence.entity
+
+import org.springframework.data.annotation.Id
+import org.springframework.data.mongodb.core.mapping.Document
+import java.time.LocalDateTime
+import java.util.UUID
+
+// Anotações de framework são permitidas apenas na camada adapter
+@Document(collection = "workout_sessions")
+record SessionEntity(
+        @Id UUID id,
+        UUID userId,
+        UUID workoutDayId,
+        LocalDateTime startedAt,
+        LocalDateTime completedAt
+) {}
+```
+
+---
+
+### Configuração do Módulo (Bean Wiring)
+
+**Local:** `session/config/SessionConfig.groovy`
+
+```groovy
+package br.dev.jsilveira.coresync.session.config
+
+import br.dev.jsilveira.coresync.session.application.port.out.LoadSessionPort
+import br.dev.jsilveira.coresync.session.application.port.out.SaveSessionPort
+import br.dev.jsilveira.coresync.session.application.service.FinishWorkoutSessionService
+import org.springframework.context.annotation.Bean
+import org.springframework.context.annotation.Configuration
+
+@Configuration
+class SessionConfig {
+
+    @Bean
+    FinishWorkoutSessionService finishWorkoutSessionService(
+            LoadSessionPort loadPort,
+            SaveSessionPort savePort
+    ) {
+        return new FinishWorkoutSessionService(loadPort, savePort)
+    }
+}
+```
+
+---
+
+## ✅ Checklist por Artefato
+
+Antes de submeter qualquer código, verifique:
+
+**Domain Model (record)**
+- [ ] Validações completas no construtor compacto
+- [ ] Sem anotações de Spring ou Mongo
+- [ ] Transições de estado retornam nova instância (imutabilidade)
+- [ ] Lógica de negócio pertinente está no record, não no service
+
+**Application Service**
+- [ ] Sem `@Service` ou qualquer anotação do Spring
+- [ ] Injeção de dependência apenas por construtor
+- [ ] Consome somente `ports/in` e `ports/out`
+- [ ] Não contém regras de negócio (delega ao domínio)
+
+**Adapter (Controller / Repository)**
+- [ ] Controller recebe e retorna apenas DTOs (`*Request` / `*Response`)
+- [ ] Mapeamento domínio ↔ DTO em Mapper dedicado
+- [ ] Repository implementa a interface `port/out` correspondente
+- [ ] Mapeamento domínio ↔ Entity em Mapper dedicado
+
+**Geral**
+- [ ] Nenhum import do Lombok em qualquer camada
+- [ ] IDs gerados na camada `application`, nunca no banco
+- [ ] Referências entre Aggregate Roots feitas apenas por UUID
+- [ ] Exceções de negócio definidas em `domain/exception/`
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..a3431b2
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,40 @@
+plugins {
+	id 'groovy'
+	id 'org.springframework.boot' version '4.0.6'
+	id 'io.spring.dependency-management' version '1.1.7'
+}
+
+group = 'br.dev.jsilveira'
+version = '0.0.1-SNAPSHOT'
+
+java {
+	toolchain {
+		languageVersion = JavaLanguageVersion.of(26)
+	}
+}
+
+repositories {
+	mavenCentral()
+}
+
+dependencies {
+	implementation 'org.springframework.boot:spring-boot-starter-actuator'
+	implementation 'org.springframework.boot:spring-boot-starter-data-mongodb'
+	implementation 'org.springframework.boot:spring-boot-starter-mongodb'
+	implementation 'org.springframework.boot:spring-boot-starter-security'
+	implementation 'org.springframework.boot:spring-boot-starter-webmvc'
+	implementation 'org.apache.groovy:groovy'
+	developmentOnly 'org.springframework.boot:spring-boot-devtools'
+	developmentOnly 'org.springframework.boot:spring-boot-docker-compose'
+	annotationProcessor 'org.springframework.boot:spring-boot-configuration-processor'
+	testImplementation 'org.springframework.boot:spring-boot-starter-actuator-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-data-mongodb-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-mongodb-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-security-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-webmvc-test'
+	testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
+}
+
+tasks.named('test') {
+	useJUnitPlatform()
+}
diff --git a/compose.yaml b/compose.yaml
new file mode 100644
index 0000000..debad29
--- /dev/null
+++ b/compose.yaml
@@ -0,0 +1,9 @@
+services:
+  mongodb:
+    image: 'mongo:latest'
+    environment:
+      - 'MONGO_INITDB_DATABASE=mydatabase'
+      - 'MONGO_INITDB_ROOT_PASSWORD=secret'
+      - 'MONGO_INITDB_ROOT_USERNAME=root'
+    ports:
+      - '27017'
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..d997cfc
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..c61a118
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..739907d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,248 @@
+#!/bin/sh
+
+#
+# Copyright © 2015 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/2d6327017519d23b96af35865dc997fcb544fb40/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..c4bdd3a
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,93 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..47b49a9
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+rootProject.name = 'coresync'
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/CoresyncApplication.groovy b/src/main/groovy/br/dev/jsilveira/coresync/CoresyncApplication.groovy
new file mode 100644
index 0000000..4c772a0
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/CoresyncApplication.groovy
@@ -0,0 +1,13 @@
+package br.dev.jsilveira.coresync
+
+import org.springframework.boot.SpringApplication
+import org.springframework.boot.autoconfigure.SpringBootApplication
+
+@SpringBootApplication
+class CoresyncApplication {
+
+	static void main(String[] args) {
+		SpringApplication.run(CoresyncApplication, args)
+	}
+
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/adapter/in/web/TrainingController.groovy b/src/main/groovy/br/dev/jsilveira/coresync/adapter/in/web/TrainingController.groovy
new file mode 100644
index 0000000..232e9de
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/adapter/in/web/TrainingController.groovy
@@ -0,0 +1,4 @@
+package br.dev.jsilveira.coresync.adapter.in.web
+
+class TrainingController {
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/adapter/out/persistence/MongoTrainingAdapter.groovy b/src/main/groovy/br/dev/jsilveira/coresync/adapter/out/persistence/MongoTrainingAdapter.groovy
new file mode 100644
index 0000000..3b4aeab
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/adapter/out/persistence/MongoTrainingAdapter.groovy
@@ -0,0 +1,4 @@
+package br.dev.jsilveira.coresync.adapter.out.persistence
+
+class MongoTrainingAdapter {
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateUserUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateUserUseCase.groovy
new file mode 100644
index 0000000..8aed7bd
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateUserUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface CreateUserUseCase {
+    User execute(String name, String email)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateWorkoutPlanUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateWorkoutPlanUserCase.groovy
new file mode 100644
index 0000000..68a424b
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/CreateWorkoutPlanUserCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.WorkoutPlan
+
+interface CreateWorkoutPlanUserCase {
+    WorkoutPlan(String name, UUID userId)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserEmailVerifiedUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserEmailVerifiedUseCase.groovy
new file mode 100644
index 0000000..348a789
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserEmailVerifiedUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface DisableUserEmailVerifiedUseCase {
+    User execute(UUID id)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserUseCase.groovy
new file mode 100644
index 0000000..6fe98b8
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableUserUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface DisableUserUseCase {
+    User execute(UUID id)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutDayRestUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutDayRestUserCase.groovy
new file mode 100644
index 0000000..431eb2b
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutDayRestUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface DisableWorkoutDayRestUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutPlanUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutPlanUserCase.groovy
new file mode 100644
index 0000000..b64a327
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/DisableWorkoutPlanUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface DisableWorkoutPlanUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserEmailVerifiedUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserEmailVerifiedUseCase.groovy
new file mode 100644
index 0000000..2fbe56d
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserEmailVerifiedUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface EnableUserEmailVerifiedUseCase {
+    User execute(UUID id)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserUseCase.groovy
new file mode 100644
index 0000000..e02829e
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableUserUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface EnableUserUseCase {
+    User execute(UUID id)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutDayRestUserCase.java b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutDayRestUserCase.java
new file mode 100644
index 0000000..9cc407a
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutDayRestUserCase.java
@@ -0,0 +1,4 @@
+package br.dev.jsilveira.coresync.application.port.in;
+
+public interface EnableWorkoutDayRestUserCase {
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutPlanUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutPlanUserCase.groovy
new file mode 100644
index 0000000..c14ee24
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/EnableWorkoutPlanUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface EnableWorkoutPlanUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserEmailUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserEmailUseCase.groovy
new file mode 100644
index 0000000..df6ebf5
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserEmailUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface UpdateUserEmailUseCase {
+    User execute(UUID id, String email)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserImageUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserImageUseCase.groovy
new file mode 100644
index 0000000..39c6bc2
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserImageUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface UpdateUserImageUseCase {
+    User execute(UUID id, String image)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserNameUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserNameUseCase.groovy
new file mode 100644
index 0000000..f4747eb
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserNameUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface UpdateUserNameUseCase {
+    User execute(UUID id, String name)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserUpdatedAtUseCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserUpdatedAtUseCase.groovy
new file mode 100644
index 0000000..4f53a22
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserUpdatedAtUseCase.groovy
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+import br.dev.jsilveira.coresync.domain.model.User
+
+interface UpdateUserUpdatedAtUseCase {
+    User execute(UUID id)
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserWorkoutSessionCompletedAtUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserWorkoutSessionCompletedAtUserCase.groovy
new file mode 100644
index 0000000..d241cfe
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateUserWorkoutSessionCompletedAtUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateUserWorkoutSessionCompletedAtUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayDurationUserCase.java b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayDurationUserCase.java
new file mode 100644
index 0000000..01f98ce
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayDurationUserCase.java
@@ -0,0 +1,4 @@
+package br.dev.jsilveira.coresync.application.port.in;
+
+public interface UpdateWorkoutDayDurationUserCase {
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayNameUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayNameUserCase.groovy
new file mode 100644
index 0000000..7059e05
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayNameUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutDayNameUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayUpdatedAtUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayUpdatedAtUserCase.groovy
new file mode 100644
index 0000000..a3ab3b7
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayUpdatedAtUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutDayUpdatedAtUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWeekDayUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWeekDayUserCase.groovy
new file mode 100644
index 0000000..1a075b8
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWeekDayUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutDayWeekDayUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWorkoutExercisesUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWorkoutExercisesUserCase.groovy
new file mode 100644
index 0000000..901bf0c
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutDayWorkoutExercisesUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutDayWorkoutExercisesUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseNameUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseNameUserCase.groovy
new file mode 100644
index 0000000..98a1a86
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseNameUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseNameUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseOrderUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseOrderUserCase.groovy
new file mode 100644
index 0000000..7654fff
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseOrderUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseOrderUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRepsUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRepsUserCase.groovy
new file mode 100644
index 0000000..904a441
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRepsUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseRepsUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRestTimeUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRestTimeUserCase.groovy
new file mode 100644
index 0000000..56d64c0
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseRestTimeUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseRestTimeUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseSetsUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseSetsUserCase.groovy
new file mode 100644
index 0000000..408fdfb
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseSetsUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseSetsUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseUpdatedAtUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseUpdatedAtUserCase.groovy
new file mode 100644
index 0000000..950b98c
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutExerciseUpdatedAtUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutExerciseUpdatedAtUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanNameUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanNameUserCase.groovy
new file mode 100644
index 0000000..cd61fc3
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanNameUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutPlanNameUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanUpdateAtUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanUpdateAtUserCase.groovy
new file mode 100644
index 0000000..af994b5
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanUpdateAtUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutPlanUpdateAtUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanWorkoutDaysUserCase.groovy b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanWorkoutDaysUserCase.groovy
new file mode 100644
index 0000000..a498c7b
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/application/port/in/UpdateWorkoutPlanWorkoutDaysUserCase.groovy
@@ -0,0 +1,5 @@
+package br.dev.jsilveira.coresync.application.port.in
+
+interface UpdateWorkoutPlanWorkoutDaysUserCase {
+
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserException.java b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserException.java
new file mode 100644
index 0000000..4fa46f3
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserException.java
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.domain.exception;
+
+public class UserException extends RuntimeException {
+    public UserException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserWorkoutSessionException.java b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserWorkoutSessionException.java
new file mode 100644
index 0000000..2d82cc6
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/UserWorkoutSessionException.java
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.domain.exception;
+
+public class UserWorkoutSessionException extends RuntimeException {
+    public UserWorkoutSessionException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutDayException.java b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutDayException.java
new file mode 100644
index 0000000..c1692a7
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutDayException.java
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.domain.exception;
+
+public class WorkoutDayException extends RuntimeException {
+    public WorkoutDayException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutExerciseException.java b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutExerciseException.java
new file mode 100644
index 0000000..8b46cbf
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutExerciseException.java
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.domain.exception;
+
+public class WorkoutExerciseException extends RuntimeException {
+    public WorkoutExerciseException(String message) {
+        super(message);
+    }
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutPlanException.java b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutPlanException.java
new file mode 100644
index 0000000..40c9369
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/exception/WorkoutPlanException.java
@@ -0,0 +1,7 @@
+package br.dev.jsilveira.coresync.domain.exception;
+
+public class WorkoutPlanException extends RuntimeException {
+  public WorkoutPlanException(String message) {
+    super(message);
+  }
+}
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/User.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/User.groovy
new file mode 100644
index 0000000..7505345
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/User.groovy
@@ -0,0 +1,30 @@
+package br.dev.jsilveira.coresync.domain.model
+
+import br.dev.jsilveira.coresync.domain.exception.UserException
+
+import java.time.LocalDateTime
+
+record User(
+        UUID id,
+        String name,
+        String email,
+        Boolean emailVerified = Boolean.FALSE,
+        String image = null,
+        LocalDateTime createdAt = LocalDateTime.now(),
+        LocalDateTime updatedAt = LocalDateTime.now(),
+        Boolean isActive = Boolean.TRUE
+) {
+    public User {
+        if (id == null) {
+            throw new UserException("O campo de identificação não pode ser nulo")
+        }
+
+        if (!name?.trim()) {
+            throw new UserException("O campo de nome não estar vazio")
+        }
+
+        if(!email?.trim()) {
+            throw new UserException("O campo email não pode estar vazio")
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/UserWorkoutSession.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/UserWorkoutSession.groovy
new file mode 100644
index 0000000..098691e
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/UserWorkoutSession.groovy
@@ -0,0 +1,56 @@
+package br.dev.jsilveira.coresync.domain.model
+
+import br.dev.jsilveira.coresync.domain.exception.UserWorkoutSessionException
+import java.time.LocalDateTime
+import java.time.Duration
+
+record UserWorkoutSession(
+        UUID id,
+        UUID userId,
+        UUID workoutDayId,
+        LocalDateTime startedAt = LocalDateTime.now(),
+        LocalDateTime completedAt
+) {
+    public UserWorkoutSession {
+        if (id == null) {
+            throw new UserWorkoutSessionException("O campo de identificação não pode ser nulo")
+        }
+        if (userId == null) {
+            throw new UserWorkoutSessionException("O campo de identificação do usuário não pode ser nulo")
+        }
+        if (workoutDayId == null) {
+            throw new UserWorkoutSessionException("O campo de identificação do dia de treino não pode ser nulo")
+        }
+        if (startedAt == null) {
+            throw new UserWorkoutSessionException("A data e hora de início não podem ser nulas")
+        }
+
+        if (completedAt != null && completedAt.isBefore(startedAt)) {
+            throw new UserWorkoutSessionException("A data de conclusão não pode ser anterior à data de início")
+        }
+    }
+
+    boolean isCompleted() {
+        return completedAt != null
+    }
+
+    Long getDurationInMinutes() {
+        if (!isCompleted()) {
+            return 0L
+        }
+        return Duration.between(startedAt, completedAt).toMinutes()
+    }
+
+    UserWorkoutSession finish(LocalDateTime time = LocalDateTime.now()) {
+        if (isCompleted()) {
+            throw new UserWorkoutSessionException("Esta sessão de treino já foi finalizada")
+        }
+        return new UserWorkoutSession(
+                this.id(),
+                this.userId(),
+                this.workoutDayId(),
+                this.startedAt(),
+                time
+        )
+    }
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WeekDay.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WeekDay.groovy
new file mode 100644
index 0000000..7b2a185
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WeekDay.groovy
@@ -0,0 +1,25 @@
+package br.dev.jsilveira.coresync.domain.model
+
+enum WeekDay {
+    DOMINGO(1),
+    SEGUNDA(2),
+    TERCA(3),
+    QUARTA(4),
+    QUINTA(5),
+    SEXTA(6),
+    SABADO(7)
+
+    final int day
+
+    WeekDay(int numberOfDay) {
+        this.day = numberOfDay
+    }
+
+    static WeekDay fromInt(int number) {
+        def weekDay = values().find { it.day == number }
+        if (!weekDay) {
+            throw new IllegalArgumentException("Dia da semana inválido: ${number}. Use de 1 a 7.")
+        }
+        return weekDay as WeekDay
+    }
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutDay.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutDay.groovy
new file mode 100644
index 0000000..350e483
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutDay.groovy
@@ -0,0 +1,54 @@
+package br.dev.jsilveira.coresync.domain.model
+
+import br.dev.jsilveira.coresync.domain.exception.WorkoutDayException
+
+import java.time.LocalDateTime
+
+record WorkoutDay(
+        UUID id,
+        String name,
+        UUID workoutPlanId,
+        Boolean isRest = Boolean.FALSE,
+        WeekDay weekDay,
+        Integer estimatedDurationInSeconds = 0,
+        LocalDateTime createdAt = LocalDateTime.now(),
+        LocalDateTime updatedAt = LocalDateTime.now(),
+        List<WorkoutExercise> workoutExercises = []
+) {
+    public WorkoutDay {
+        if (id == null) {
+            throw new WorkoutDayException("O campo de identificação não pode ser nulo")
+        }
+
+        if (!name?.trim()) {
+            throw new WorkoutDayException("O campo de nome não estar vazio")
+        }
+
+        if (workoutPlanId == null) {
+            throw new WorkoutDayException("O campo de identificação do plano de treino não pode ser nulo")
+        }
+
+        if (weekDay == null){
+            throw new WorkoutDayException("O campo de dia da semana não pode ser nulo")
+        }
+        
+        if (estimatedDurationInSeconds < 0){
+            throw new WorkoutDayException("O campo de estimativa de tempo não pode ser negativo")
+        }
+
+        if (isRest && workoutExercises && !workoutExercises.isEmpty()) {
+            throw new WorkoutDayException("Um dia de descanso não pode conter exercícios")
+        }
+
+        if (workoutExercises == null) {
+            workoutExercises = []
+        }
+
+        workoutExercises = workoutExercises.asImmutable()
+    }
+
+    int calculateTotalTime() {
+        return workoutExercises.sum { it.estimatedTime() } ?: 0 as int
+    }
+}
+
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutExercise.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutExercise.groovy
new file mode 100644
index 0000000..80db9c6
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutExercise.groovy
@@ -0,0 +1,43 @@
+package br.dev.jsilveira.coresync.domain.model
+
+import br.dev.jsilveira.coresync.domain.exception.WorkoutExerciseException
+
+import java.time.LocalDateTime
+
+record WorkoutExercise(
+        UUID id,
+        Integer order = 0,
+        String name,
+        Integer sets,
+        Integer reps,
+        Integer restTimeInSeconds,
+        UUID workoutDayId,
+        LocalDateTime createdAt = LocalDateTime.now(),
+        LocalDateTime updatedAt = LocalDateTime.now()
+) {
+    public WorkoutExercise {
+        if (id == null){
+           throw new WorkoutExerciseException("O campo de identificação não pode ser nulo")
+        }
+
+        if (!name?.trim()) {
+            throw new WorkoutExerciseException("O campo de nome não estar vazio")
+        }
+
+        if (sets < 1) {
+            throw new WorkoutExerciseException("O campo de séries deve ser maior que zero")
+        }
+
+        if (reps < 1) {
+            throw new WorkoutExerciseException("O campo de repetições deve ser maior que zero")
+        }
+
+        if (restTimeInSeconds < 1) {
+            throw new WorkoutExerciseException("O campo de tempo de descanso deve ser maior que zero")
+        }
+
+        if (workoutDayId == null){
+            throw new WorkoutExerciseException("O campo de identificação  do dia de treino não pode ser nulo")
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutPlan.groovy b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutPlan.groovy
new file mode 100644
index 0000000..be23a81
--- /dev/null
+++ b/src/main/groovy/br/dev/jsilveira/coresync/domain/model/WorkoutPlan.groovy
@@ -0,0 +1,34 @@
+package br.dev.jsilveira.coresync.domain.model
+
+import br.dev.jsilveira.coresync.domain.exception.WorkoutPlanException
+
+import java.time.LocalDateTime
+
+record WorkoutPlan(
+        UUID id,
+        String name,
+        UUID userId,
+        Boolean isActive = Boolean.FALSE,
+        LocalDateTime createdAt = LocalDateTime.now(),
+        LocalDateTime updateAt = LocaDateTime.now(),
+        List<WorkoutDay> workoutDays = []
+) {
+    public WorkoutPlan {
+        if (id == null){
+            throw new WorkoutPlanException("O campo de identificação não pode ser nulo")
+        }
+
+        if (!name?.trim()) {
+            throw new WorkoutPlanException("O campo de nome não pode estar vazio")
+        }
+
+        if (userId == null) {
+            throw new WorkoutPlanException("O campo de identificação do usuário não pode ser nulo")
+        }
+
+        if (workoutDays == null) {
+            workoutDays = []
+        }
+        workoutDays = workoutDays.asImmutable()
+    }
+}
\ No newline at end of file
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
new file mode 100644
index 0000000..5bf5e33
--- /dev/null
+++ b/src/main/resources/application.properties
@@ -0,0 +1 @@
+spring.application.name=coresync
diff --git a/src/test/groovy/br/dev/jsilveira/coresync/CoresyncApplicationTests.groovy b/src/test/groovy/br/dev/jsilveira/coresync/CoresyncApplicationTests.groovy
new file mode 100644
index 0000000..94c575b
--- /dev/null
+++ b/src/test/groovy/br/dev/jsilveira/coresync/CoresyncApplicationTests.groovy
@@ -0,0 +1,13 @@
+package br.dev.jsilveira.coresync
+
+import org.junit.jupiter.api.Test
+import org.springframework.boot.test.context.SpringBootTest
+
+@SpringBootTest
+class CoresyncApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}