feat: initialisation du projet Olhar-API en Clean Architecture

- Spring Boot 3.4.1 + Gradle Kotlin DSL, Java 21
- Clean Architecture (domain / application / infrastructure / interfaces)
- Spring Security stateless avec JWT (JJWT 0.12.6)
- Flyway + PostgreSQL (migration V1 table users)
- SpringDoc OpenAPI / Swagger UI avec auth Bearer
- Testcontainers pour les tests d'intégration
- Use cases Register et Authenticate (endpoints POST /api/v1/auth/register et /login)
- GlobalExceptionHandler avec ProblemDetail (RFC 9457)
- docker-compose.yml pour Postgres local

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,25 @@
+# Build
+build/
+.gradle/
+out/
+
+# IDE
+.idea/
+*.iml
+.vscode/
+
+# Spring Boot
+*.jar
+*.war
+
+# Env
+.env
+*.env.local
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+logs/

build.gradle.kts

@@ -0,0 +1,69 @@
+import org.springframework.boot.gradle.tasks.bundling.BootJar
+
+plugins {
+    java
+    id("org.springframework.boot") version "3.4.1"
+    id("io.spring.dependency-management") version "1.1.7"
+}
+
+group = "com.olhar"
+version = "0.0.1-SNAPSHOT"
+
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
+repositories {
+    mavenCentral()
+}
+
+val testcontainersVersion = "1.20.4"
+
+dependencies {
+    // Spring Boot starters
+    implementation("org.springframework.boot:spring-boot-starter-web")
+    implementation("org.springframework.boot:spring-boot-starter-data-jpa")
+    implementation("org.springframework.boot:spring-boot-starter-security")
+    implementation("org.springframework.boot:spring-boot-starter-validation")
+
+    // Database
+    runtimeOnly("org.postgresql:postgresql")
+    implementation("org.flywaydb:flyway-core")
+    implementation("org.flywaydb:flyway-database-postgresql")
+
+    // OpenAPI / Swagger
+    implementation("org.springdoc:springdoc-openapi-starter-webmvc-ui:2.7.0")
+
+    // JWT
+    implementation("io.jsonwebtoken:jjwt-api:0.12.6")
+    runtimeOnly("io.jsonwebtoken:jjwt-impl:0.12.6")
+    runtimeOnly("io.jsonwebtoken:jjwt-jackson:0.12.6")
+
+    // Utils
+    compileOnly("org.projectlombok:lombok")
+    annotationProcessor("org.projectlombok:lombok")
+
+    // Test
+    testImplementation("org.springframework.boot:spring-boot-starter-test")
+    testImplementation("org.springframework.security:spring-security-test")
+    testImplementation("org.testcontainers:junit-jupiter")
+    testImplementation("org.testcontainers:postgresql")
+    testCompileOnly("org.projectlombok:lombok")
+    testAnnotationProcessor("org.projectlombok:lombok")
+}
+
+dependencyManagement {
+    imports {
+        mavenBom("org.testcontainers:testcontainers-bom:${testcontainersVersion}")
+    }
+}
+
+tasks.withType<Test> {
+    useJUnitPlatform()
+}
+
+tasks.named<BootJar>("bootJar") {
+    archiveFileName.set("olhar-api.jar")
+}

docker-compose.yml

@@ -0,0 +1,19 @@
+services:
+  postgres:
+    image: postgres:16
+    environment:
+      POSTGRES_DB: olhar
+      POSTGRES_USER: olhar
+      POSTGRES_PASSWORD: olhar
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U olhar"]
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+volumes:
+  postgres_data:

gradle.properties

@@ -0,0 +1,3 @@
+org.gradle.jvmargs=-Xmx2g -XX:MaxMetaspaceSize=512m
+org.gradle.daemon=true
+org.gradle.parallel=true

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,7 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.4-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,251 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 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/HEAD/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 "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH="\\\"\\\""
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$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 "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( 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=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        -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 "$JAVACMD" "$@"

settings.gradle.kts

@@ -0,0 +1 @@
+rootProject.name = "olhar-api"

src/main/java/com/olhar/olharapi/OlharApiApplication.java

@@ -0,0 +1,12 @@
+package com.olhar.olharapi;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class OlharApiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(OlharApiApplication.class, args);
+    }
+}

src/main/java/com/olhar/olharapi/application/port/in/AuthenticateUserUseCase.java

@@ -0,0 +1,7 @@
+package com.olhar.olharapi.application.port.in;
+
+public interface AuthenticateUserUseCase {
+    String authenticate(Command command);
+
+    record Command(String email, String password) {}
+}

src/main/java/com/olhar/olharapi/application/port/in/RegisterUserUseCase.java

@@ -0,0 +1,9 @@
+package com.olhar.olharapi.application.port.in;
+
+import com.olhar.olharapi.domain.model.User;
+
+public interface RegisterUserUseCase {
+    User register(Command command);
+
+    record Command(String email, String password) {}
+}

src/main/java/com/olhar/olharapi/application/usecase/AuthenticateUserService.java

@@ -0,0 +1,32 @@
+package com.olhar.olharapi.application.usecase;
+
+import com.olhar.olharapi.application.port.in.AuthenticateUserUseCase;
+import com.olhar.olharapi.application.port.out.UserRepository;
+import com.olhar.olharapi.domain.exception.UserNotFoundException;
+import com.olhar.olharapi.domain.model.User;
+import com.olhar.olharapi.infrastructure.security.JwtService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.authentication.BadCredentialsException;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+public class AuthenticateUserService implements AuthenticateUserUseCase {
+
+    private final UserRepository userRepository;
+    private final PasswordEncoder passwordEncoder;
+    private final JwtService jwtService;
+
+    @Override
+    public String authenticate(Command command) {
+        User user = userRepository.findByEmail(command.email())
+                .orElseThrow(() -> new UserNotFoundException(command.email()));
+
+        if (!passwordEncoder.matches(command.password(), user.passwordHash())) {
+            throw new BadCredentialsException("Invalid credentials");
+        }
+
+        return jwtService.generateToken(user);
+    }
+}

src/main/java/com/olhar/olharapi/application/usecase/RegisterUserService.java

@@ -0,0 +1,39 @@
+package com.olhar.olharapi.application.usecase;
+
+import com.olhar.olharapi.application.port.in.RegisterUserUseCase;
+import com.olhar.olharapi.application.port.out.UserRepository;
+import com.olhar.olharapi.domain.exception.EmailAlreadyUsedException;
+import com.olhar.olharapi.domain.model.User;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Service
+@RequiredArgsConstructor
+public class RegisterUserService implements RegisterUserUseCase {
+
+    private final UserRepository userRepository;
+    private final PasswordEncoder passwordEncoder;
+
+    @Override
+    @Transactional
+    public User register(Command command) {
+        if (userRepository.existsByEmail(command.email())) {
+            throw new EmailAlreadyUsedException(command.email());
+        }
+
+        User user = new User(
+                UUID.randomUUID(),
+                command.email(),
+                passwordEncoder.encode(command.password()),
+                User.Role.USER,
+                Instant.now()
+        );
+
+        return userRepository.save(user);
+    }
+}

src/main/java/com/olhar/olharapi/domain/exception/EmailAlreadyUsedException.java

@@ -0,0 +1,7 @@
+package com.olhar.olharapi.domain.exception;
+
+public class EmailAlreadyUsedException extends RuntimeException {
+    public EmailAlreadyUsedException(String email) {
+        super("Email already in use: " + email);
+    }
+}

src/main/java/com/olhar/olharapi/domain/exception/UserNotFoundException.java

@@ -0,0 +1,7 @@
+package com.olhar.olharapi.domain.exception;
+
+public class UserNotFoundException extends RuntimeException {
+    public UserNotFoundException(String email) {
+        super("User not found: " + email);
+    }
+}

src/main/java/com/olhar/olharapi/domain/model/User.java

@@ -0,0 +1,16 @@
+package com.olhar.olharapi.domain.model;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public record User(
+        UUID id,
+        String email,
+        String passwordHash,
+        Role role,
+        Instant createdAt
+) {
+    public enum Role {
+        USER, ADMIN
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/config/OpenApiConfig.java

@@ -0,0 +1,31 @@
+package com.olhar.olharapi.infrastructure.config;
+
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.security.SecurityRequirement;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class OpenApiConfig {
+
+    private static final String BEARER_SCHEME = "bearerAuth";
+
+    @Bean
+    public OpenAPI openAPI() {
+        return new OpenAPI()
+                .info(new Info()
+                        .title("Olhar API")
+                        .description("API REST — Olhar")
+                        .version("v1"))
+                .addSecurityItem(new SecurityRequirement().addList(BEARER_SCHEME))
+                .components(new Components()
+                        .addSecuritySchemes(BEARER_SCHEME, new SecurityScheme()
+                                .name(BEARER_SCHEME)
+                                .type(SecurityScheme.Type.HTTP)
+                                .scheme("bearer")
+                                .bearerFormat("JWT")));
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/config/SecurityConfig.java

@@ -0,0 +1,48 @@
+package com.olhar.olharapi.infrastructure.config;
+
+import com.olhar.olharapi.infrastructure.security.JwtAuthenticationFilter;
+import lombok.RequiredArgsConstructor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.security.config.annotation.method.configuration.EnableMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
+import org.springframework.security.config.http.SessionCreationPolicy;
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+import org.springframework.security.crypto.password.PasswordEncoder;
+import org.springframework.security.web.SecurityFilterChain;
+import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
+
+@Configuration
+@EnableWebSecurity
+@EnableMethodSecurity
+@RequiredArgsConstructor
+public class SecurityConfig {
+
+    private final JwtAuthenticationFilter jwtAuthFilter;
+
+    @Bean
+    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
+        return http
+                .csrf(AbstractHttpConfigurer::disable)
+                .sessionManagement(s -> s.sessionCreationPolicy(SessionCreationPolicy.STATELESS))
+                .authorizeHttpRequests(auth -> auth
+                        .requestMatchers(
+                                "/api/v1/auth/**",
+                                "/swagger-ui/**",
+                                "/swagger-ui.html",
+                                "/api-docs/**",
+                                "/v3/api-docs/**"
+                        ).permitAll()
+                        .anyRequest().authenticated()
+                )
+                .addFilterBefore(jwtAuthFilter, UsernamePasswordAuthenticationFilter.class)
+                .build();
+    }
+
+    @Bean
+    public PasswordEncoder passwordEncoder() {
+        return new BCryptPasswordEncoder();
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/persistence/entity/UserEntity.java

@@ -0,0 +1,37 @@
+package com.olhar.olharapi.infrastructure.persistence.entity;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.time.Instant;
+import java.util.UUID;
+
+@Entity
+@Table(name = "users")
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@Builder
+public class UserEntity {
+
+    @Id
+    private UUID id;
+
+    @Column(nullable = false, unique = true)
+    private String email;
+
+    @Column(name = "password_hash", nullable = false)
+    private String passwordHash;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private RoleEnum role;
+
+    @Column(name = "created_at", nullable = false)
+    private Instant createdAt;
+
+    public enum RoleEnum {
+        USER, ADMIN
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/persistence/mapper/UserPersistenceMapper.java

@@ -0,0 +1,29 @@
+package com.olhar.olharapi.infrastructure.persistence.mapper;
+
+import com.olhar.olharapi.domain.model.User;
+import com.olhar.olharapi.infrastructure.persistence.entity.UserEntity;
+import org.springframework.stereotype.Component;
+
+@Component
+public class UserPersistenceMapper {
+
+    public User toDomain(UserEntity entity) {
+        return new User(
+                entity.getId(),
+                entity.getEmail(),
+                entity.getPasswordHash(),
+                User.Role.valueOf(entity.getRole().name()),
+                entity.getCreatedAt()
+        );
+    }
+
+    public UserEntity toEntity(User user) {
+        return UserEntity.builder()
+                .id(user.id())
+                .email(user.email())
+                .passwordHash(user.passwordHash())
+                .role(UserEntity.RoleEnum.valueOf(user.role().name()))
+                .createdAt(user.createdAt())
+                .build();
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/persistence/repository/JpaUserRepository.java

@@ -0,0 +1,12 @@
+package com.olhar.olharapi.infrastructure.persistence.repository;
+
+import com.olhar.olharapi.infrastructure.persistence.entity.UserEntity;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import java.util.Optional;
+import java.util.UUID;
+
+public interface JpaUserRepository extends JpaRepository<UserEntity, UUID> {
+    Optional<UserEntity> findByEmail(String email);
+    boolean existsByEmail(String email);
+}

src/main/java/com/olhar/olharapi/infrastructure/persistence/repository/UserRepositoryAdapter.java

@@ -0,0 +1,38 @@
+package com.olhar.olharapi.infrastructure.persistence.repository;
+
+import com.olhar.olharapi.application.port.out.UserRepository;
+import com.olhar.olharapi.domain.model.User;
+import com.olhar.olharapi.infrastructure.persistence.mapper.UserPersistenceMapper;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+
+import java.util.Optional;
+import java.util.UUID;
+
+@Component
+@RequiredArgsConstructor
+public class UserRepositoryAdapter implements UserRepository {
+
+    private final JpaUserRepository jpaUserRepository;
+    private final UserPersistenceMapper mapper;
+
+    @Override
+    public User save(User user) {
+        return mapper.toDomain(jpaUserRepository.save(mapper.toEntity(user)));
+    }
+
+    @Override
+    public Optional<User> findByEmail(String email) {
+        return jpaUserRepository.findByEmail(email).map(mapper::toDomain);
+    }
+
+    @Override
+    public Optional<User> findById(UUID id) {
+        return jpaUserRepository.findById(id).map(mapper::toDomain);
+    }
+
+    @Override
+    public boolean existsByEmail(String email) {
+        return jpaUserRepository.existsByEmail(email);
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/security/JwtAuthenticationFilter.java

@@ -0,0 +1,57 @@
+package com.olhar.olharapi.infrastructure.security;
+
+import jakarta.servlet.FilterChain;
+import jakarta.servlet.ServletException;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import lombok.RequiredArgsConstructor;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.authority.SimpleGrantedAuthority;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
+import org.springframework.stereotype.Component;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import java.io.IOException;
+import java.util.List;
+
+@Component
+@RequiredArgsConstructor
+public class JwtAuthenticationFilter extends OncePerRequestFilter {
+
+    private final JwtService jwtService;
+
+    @Override
+    protected void doFilterInternal(
+            HttpServletRequest request,
+            HttpServletResponse response,
+            FilterChain filterChain
+    ) throws ServletException, IOException {
+        String authHeader = request.getHeader("Authorization");
+
+        if (authHeader == null || !authHeader.startsWith("Bearer ")) {
+            filterChain.doFilter(request, response);
+            return;
+        }
+
+        String token = authHeader.substring(7);
+
+        if (!jwtService.isTokenValid(token)) {
+            filterChain.doFilter(request, response);
+            return;
+        }
+
+        String email = jwtService.extractEmail(token);
+        String role = jwtService.extractClaims(token).get("role", String.class);
+
+        UsernamePasswordAuthenticationToken auth = new UsernamePasswordAuthenticationToken(
+                email,
+                null,
+                List.of(new SimpleGrantedAuthority("ROLE_" + role))
+        );
+        auth.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
+        SecurityContextHolder.getContext().setAuthentication(auth);
+
+        filterChain.doFilter(request, response);
+    }
+}

src/main/java/com/olhar/olharapi/infrastructure/security/JwtService.java

@@ -0,0 +1,59 @@
+package com.olhar.olharapi.infrastructure.security;
+
+import com.olhar.olharapi.domain.model.User;
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.security.Keys;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Service;
+
+import javax.crypto.SecretKey;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+@Service
+public class JwtService {
+
+    private final SecretKey secretKey;
+    private final long expirationMs;
+
+    public JwtService(
+            @Value("${security.jwt.secret}") String secret,
+            @Value("${security.jwt.expiration-ms}") long expirationMs
+    ) {
+        this.secretKey = Keys.hmacShaKeyFor(secret.getBytes(StandardCharsets.UTF_8));
+        this.expirationMs = expirationMs;
+    }
+
+    public String generateToken(User user) {
+        Date now = new Date();
+        return Jwts.builder()
+                .subject(user.email())
+                .claim("role", user.role().name())
+                .claim("userId", user.id().toString())
+                .issuedAt(now)
+                .expiration(new Date(now.getTime() + expirationMs))
+                .signWith(secretKey)
+                .compact();
+    }
+
+    public Claims extractClaims(String token) {
+        return Jwts.parser()
+                .verifyWith(secretKey)
+                .build()
+                .parseSignedClaims(token)
+                .getPayload();
+    }
+
+    public String extractEmail(String token) {
+        return extractClaims(token).getSubject();
+    }
+
+    public boolean isTokenValid(String token) {
+        try {
+            return extractClaims(token).getExpiration().after(new Date());
+        } catch (Exception e) {
+            return false;
+        }
+    }
+}

src/main/java/com/olhar/olharapi/interfaces/exception/GlobalExceptionHandler.java

@@ -0,0 +1,42 @@
+package com.olhar.olharapi.interfaces.exception;
+
+import com.olhar.olharapi.domain.exception.EmailAlreadyUsedException;
+import com.olhar.olharapi.domain.exception.UserNotFoundException;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ProblemDetail;
+import org.springframework.security.authentication.BadCredentialsException;
+import org.springframework.validation.FieldError;
+import org.springframework.web.bind.MethodArgumentNotValidException;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.RestControllerAdvice;
+
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@RestControllerAdvice
+public class GlobalExceptionHandler {
+
+    @ExceptionHandler(EmailAlreadyUsedException.class)
+    public ProblemDetail handleEmailAlreadyUsed(EmailAlreadyUsedException ex) {
+        return ProblemDetail.forStatusAndDetail(HttpStatus.CONFLICT, ex.getMessage());
+    }
+
+    @ExceptionHandler(UserNotFoundException.class)
+    public ProblemDetail handleUserNotFound(UserNotFoundException ex) {
+        return ProblemDetail.forStatusAndDetail(HttpStatus.NOT_FOUND, ex.getMessage());
+    }
+
+    @ExceptionHandler(BadCredentialsException.class)
+    public ProblemDetail handleBadCredentials(BadCredentialsException ex) {
+        return ProblemDetail.forStatusAndDetail(HttpStatus.UNAUTHORIZED, ex.getMessage());
+    }
+
+    @ExceptionHandler(MethodArgumentNotValidException.class)
+    public ProblemDetail handleValidation(MethodArgumentNotValidException ex) {
+        Map<String, String> errors = ex.getBindingResult().getFieldErrors().stream()
+                .collect(Collectors.toMap(FieldError::getField, f -> f.getDefaultMessage() != null ? f.getDefaultMessage() : "Invalid value"));
+        ProblemDetail problem = ProblemDetail.forStatusAndDetail(HttpStatus.BAD_REQUEST, "Validation failed");
+        problem.setProperty("errors", errors);
+        return problem;
+    }
+}

src/main/java/com/olhar/olharapi/interfaces/rest/controller/AuthController.java

@@ -0,0 +1,46 @@
+package com.olhar.olharapi.interfaces.rest.controller;
+
+import com.olhar.olharapi.application.port.in.AuthenticateUserUseCase;
+import com.olhar.olharapi.application.port.in.RegisterUserUseCase;
+import com.olhar.olharapi.domain.model.User;
+import com.olhar.olharapi.interfaces.rest.dto.request.LoginRequest;
+import com.olhar.olharapi.interfaces.rest.dto.request.RegisterRequest;
+import com.olhar.olharapi.interfaces.rest.dto.response.AuthResponse;
+import com.olhar.olharapi.interfaces.rest.dto.response.UserResponse;
+import com.olhar.olharapi.interfaces.rest.mapper.UserRestMapper;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.*;
+
+@RestController
+@RequestMapping("/api/v1/auth")
+@RequiredArgsConstructor
+@Tag(name = "Auth", description = "Inscription et authentification")
+public class AuthController {
+
+    private final RegisterUserUseCase registerUserUseCase;
+    private final AuthenticateUserUseCase authenticateUserUseCase;
+    private final UserRestMapper userRestMapper;
+
+    @PostMapping("/register")
+    @ResponseStatus(HttpStatus.CREATED)
+    @Operation(summary = "Créer un compte utilisateur")
+    public UserResponse register(@Valid @RequestBody RegisterRequest request) {
+        User user = registerUserUseCase.register(
+                new RegisterUserUseCase.Command(request.email(), request.password())
+        );
+        return userRestMapper.toResponse(user);
+    }
+
+    @PostMapping("/login")
+    @Operation(summary = "S'authentifier et obtenir un token JWT")
+    public AuthResponse login(@Valid @RequestBody LoginRequest request) {
+        String token = authenticateUserUseCase.authenticate(
+                new AuthenticateUserUseCase.Command(request.email(), request.password())
+        );
+        return new AuthResponse(token);
+    }
+}

src/main/java/com/olhar/olharapi/interfaces/rest/dto/request/LoginRequest.java

@@ -0,0 +1,9 @@
+package com.olhar.olharapi.interfaces.rest.dto.request;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+
+public record LoginRequest(
+        @Email @NotBlank String email,
+        @NotBlank String password
+) {}

src/main/java/com/olhar/olharapi/interfaces/rest/dto/request/RegisterRequest.java

@@ -0,0 +1,10 @@
+package com.olhar.olharapi.interfaces.rest.dto.request;
+
+import jakarta.validation.constraints.Email;
+import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.Size;
+
+public record RegisterRequest(
+        @Email @NotBlank String email,
+        @NotBlank @Size(min = 8) String password
+) {}

src/main/java/com/olhar/olharapi/interfaces/rest/dto/response/AuthResponse.java

@@ -0,0 +1,3 @@
+package com.olhar.olharapi.interfaces.rest.dto.response;
+
+public record AuthResponse(String token) {}

src/main/java/com/olhar/olharapi/interfaces/rest/dto/response/UserResponse.java

@@ -0,0 +1,6 @@
+package com.olhar.olharapi.interfaces.rest.dto.response;
+
+import java.time.Instant;
+import java.util.UUID;
+
+public record UserResponse(UUID id, String email, String role, Instant createdAt) {}

src/main/java/com/olhar/olharapi/interfaces/rest/mapper/UserRestMapper.java

@@ -0,0 +1,18 @@
+package com.olhar.olharapi.interfaces.rest.mapper;
+
+import com.olhar.olharapi.domain.model.User;
+import com.olhar.olharapi.interfaces.rest.dto.response.UserResponse;
+import org.springframework.stereotype.Component;
+
+@Component
+public class UserRestMapper {
+
+    public UserResponse toResponse(User user) {
+        return new UserResponse(
+                user.id(),
+                user.email(),
+                user.role().name(),
+                user.createdAt()
+        );
+    }
+}

src/main/resources/application.yml

@@ -0,0 +1,32 @@
+spring:
+  datasource:
+    url: jdbc:postgresql://${DB_HOST:localhost}:${DB_PORT:5432}/${DB_NAME:olhar}
+    username: ${DB_USER:olhar}
+    password: ${DB_PASSWORD:olhar}
+    driver-class-name: org.postgresql.Driver
+  jpa:
+    hibernate:
+      ddl-auto: validate
+    show-sql: false
+    properties:
+      hibernate:
+        dialect: org.hibernate.dialect.PostgreSQLDialect
+        format_sql: true
+  flyway:
+    enabled: true
+    locations: classpath:db/migration
+
+server:
+  port: 8080
+
+springdoc:
+  api-docs:
+    path: /api-docs
+  swagger-ui:
+    path: /swagger-ui.html
+    operationsSorter: method
+
+security:
+  jwt:
+    secret: ${JWT_SECRET:changeme-in-production-use-a-long-random-string-at-least-256-bits}
+    expiration-ms: ${JWT_EXPIRATION_MS:86400000}

src/main/resources/db/migration/V1__create_users_table.sql

@@ -0,0 +1,7 @@
+CREATE TABLE users (
+    id          UUID        PRIMARY KEY,
+    email       VARCHAR(255) NOT NULL UNIQUE,
+    password_hash VARCHAR(255) NOT NULL,
+    role        VARCHAR(50)  NOT NULL DEFAULT 'USER',
+    created_at  TIMESTAMPTZ  NOT NULL DEFAULT now()
+);

src/test/java/com/olhar/olharapi/infrastructure/AbstractIntegrationTest.java

@@ -0,0 +1,29 @@
+package com.olhar.olharapi.infrastructure;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+import org.testcontainers.containers.PostgreSQLContainer;
+import org.testcontainers.junit.jupiter.Container;
+import org.testcontainers.junit.jupiter.Testcontainers;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@ActiveProfiles("test")
+@Testcontainers
+public abstract class AbstractIntegrationTest {
+
+    @Container
+    static final PostgreSQLContainer<?> postgres = new PostgreSQLContainer<>("postgres:16")
+            .withDatabaseName("olhar_test")
+            .withUsername("olhar")
+            .withPassword("olhar");
+
+    @DynamicPropertySource
+    static void configureProperties(DynamicPropertyRegistry registry) {
+        registry.add("spring.datasource.url", postgres::getJdbcUrl);
+        registry.add("spring.datasource.username", postgres::getUsername);
+        registry.add("spring.datasource.password", postgres::getPassword);
+        registry.add("spring.datasource.driver-class-name", () -> "org.postgresql.Driver");
+    }
+}

src/test/java/com/olhar/olharapi/infrastructure/security/JwtServiceTest.java

@@ -0,0 +1,39 @@
+package com.olhar.olharapi.infrastructure.security;
+
+import com.olhar.olharapi.domain.model.User;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import java.time.Instant;
+import java.util.UUID;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class JwtServiceTest {
+
+    private JwtService jwtService;
+
+    @BeforeEach
+    void setUp() {
+        jwtService = new JwtService(
+                "test-secret-key-for-testing-only-must-be-long-enough-32-chars",
+                3600000L
+        );
+    }
+
+    @Test
+    void generateToken_shouldReturnValidToken() {
+        User user = new User(UUID.randomUUID(), "user@example.com", "hash", User.Role.USER, Instant.now());
+
+        String token = jwtService.generateToken(user);
+
+        assertThat(token).isNotBlank();
+        assertThat(jwtService.isTokenValid(token)).isTrue();
+        assertThat(jwtService.extractEmail(token)).isEqualTo("user@example.com");
+    }
+
+    @Test
+    void isTokenValid_shouldReturnFalse_forInvalidToken() {
+        assertThat(jwtService.isTokenValid("not.a.valid.token")).isFalse();
+    }
+}

src/test/java/com/olhar/olharapi/interfaces/AuthControllerIT.java

@@ -0,0 +1,61 @@
+package com.olhar.olharapi.interfaces;
+
+import com.olhar.olharapi.infrastructure.AbstractIntegrationTest;
+import com.olhar.olharapi.interfaces.rest.dto.request.LoginRequest;
+import com.olhar.olharapi.interfaces.rest.dto.request.RegisterRequest;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class AuthControllerIT extends AbstractIntegrationTest {
+
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Test
+    void register_shouldCreateUser_whenEmailIsNew() {
+        RegisterRequest request = new RegisterRequest("test@example.com", "password123");
+
+        ResponseEntity<String> response = restTemplate.postForEntity("/api/v1/auth/register", request, String.class);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.CREATED);
+        assertThat(response.getBody()).contains("test@example.com");
+    }
+
+    @Test
+    void register_shouldReturnConflict_whenEmailAlreadyExists() {
+        RegisterRequest request = new RegisterRequest("duplicate@example.com", "password123");
+        restTemplate.postForEntity("/api/v1/auth/register", request, String.class);
+
+        ResponseEntity<String> response = restTemplate.postForEntity("/api/v1/auth/register", request, String.class);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.CONFLICT);
+    }
+
+    @Test
+    void login_shouldReturnToken_whenCredentialsAreValid() {
+        RegisterRequest registerRequest = new RegisterRequest("login@example.com", "password123");
+        restTemplate.postForEntity("/api/v1/auth/register", registerRequest, String.class);
+
+        LoginRequest loginRequest = new LoginRequest("login@example.com", "password123");
+        ResponseEntity<String> response = restTemplate.postForEntity("/api/v1/auth/login", loginRequest, String.class);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
+        assertThat(response.getBody()).contains("token");
+    }
+
+    @Test
+    void login_shouldReturnUnauthorized_whenPasswordIsWrong() {
+        RegisterRequest registerRequest = new RegisterRequest("wrongpass@example.com", "password123");
+        restTemplate.postForEntity("/api/v1/auth/register", registerRequest, String.class);
+
+        LoginRequest loginRequest = new LoginRequest("wrongpass@example.com", "wrongpassword");
+        ResponseEntity<String> response = restTemplate.postForEntity("/api/v1/auth/login", loginRequest, String.class);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.UNAUTHORIZED);
+    }
+}

src/test/resources/application-test.yml

@@ -0,0 +1,14 @@
+spring:
+  datasource:
+    url: jdbc:tc:postgresql:16:///olhar_test
+    driver-class-name: org.testcontainers.jdbc.ContainerDatabaseDriver
+  jpa:
+    hibernate:
+      ddl-auto: validate
+  flyway:
+    enabled: true
+
+security:
+  jwt:
+    secret: test-secret-key-for-testing-only-must-be-long-enough
+    expiration-ms: 3600000