AuthController.java

package com.order.api01authgateway.controller;

import com.order.api01authgateway.dto.LoginRequest;
import com.order.api01authgateway.dto.TokenResponse;
import com.order.api01authgateway.service.AuthService;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.media.Content;
import io.swagger.v3.oas.annotations.media.Schema;
import io.swagger.v3.oas.annotations.responses.ApiResponse;
import io.swagger.v3.oas.annotations.responses.ApiResponses;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import lombok.RequiredArgsConstructor;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@RequestMapping("/auth")
@RequiredArgsConstructor
@Tag(name = "Authentication", description = "Login and token generation endpoints")
public class AuthController {

    private final AuthService authService;

    @Operation(summary = "Authenticate user", description = "Validates credentials and generates a JWT token")
    @ApiResponses(value = {
        @ApiResponse(responseCode = "200", description = "Token generated successfully", content = @Content(schema = @Schema(implementation = TokenResponse.class))),
        @ApiResponse(responseCode = "401", description = "Invalid credentials", content = @Content),
        @ApiResponse(responseCode = "400", description = "Invalid request data", content = @Content)
    })
    @PostMapping("/login")
    public ResponseEntity<TokenResponse> login(@Valid @RequestBody LoginRequest request) {
        return ResponseEntity.ok(authService.authenticate(request));
    }
}