feat: Sign-in api를 추가한다.

src/main/java/com/dnd/accompany/domain/auth/api/AuthController.java

@@ -0,0 +1,39 @@
+package com.dnd.accompany.domain.auth.api;
+
+import com.dnd.accompany.domain.auth.dto.AuthUserInfo;
+import com.dnd.accompany.domain.auth.dto.Tokens;
+import com.dnd.accompany.domain.auth.oauth.dto.LoginRequest;
+import com.dnd.accompany.domain.auth.oauth.dto.OAuthUserDataResponse;
+import com.dnd.accompany.domain.auth.oauth.dto.OAuthUserInfo;
+import com.dnd.accompany.domain.auth.oauth.service.OAuthService;
+import com.dnd.accompany.domain.auth.service.TokenService;
+import com.dnd.accompany.domain.user.service.UserService;
+import lombok.RequiredArgsConstructor;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/api/v1/auth")
+@RequiredArgsConstructor
+public class AuthController {
+
+    private final TokenService tokenService;
+    private final OAuthService oAuthService;
+    private final UserService userService;
+
+
+    @GetMapping("/sign-in")
+    public ResponseEntity<Tokens> signIn(LoginRequest loginRequest) {
+        OAuthUserDataResponse oAuthUserData = oAuthService.login(loginRequest);
+
+        OAuthUserInfo oAuthUserInfo = OAuthUserInfo.from(oAuthUserData);
+
+        AuthUserInfo authUserInfo = userService.getOrRegister(oAuthUserInfo);
+
+        Tokens tokens = tokenService.createTokens(authUserInfo);
+
+        return ResponseEntity.ok(tokens);
+    }
+}

src/main/java/com/dnd/accompany/domain/auth/oauth/dto/OAuthUserInfo.java

@@ -0,0 +1,28 @@
+package com.dnd.accompany.domain.auth.oauth.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NoArgsConstructor;
+
+@Getter
+@Builder
+@AllArgsConstructor
+@NoArgsConstructor
+public class OAuthUserInfo {
+    private String provider;
+    private String oauthId;
+    private String nickname;
+    private String email;
+    private String appleRefreshToken;
+
+    public static OAuthUserInfo from(OAuthUserDataResponse oAuthUserDataResponse) {
+        return OAuthUserInfo.builder()
+                .provider(oAuthUserDataResponse.getProvider())
+                .oauthId(oAuthUserDataResponse.getOauthId())
+                .nickname(oAuthUserDataResponse.getNickname())
+                .email(oAuthUserDataResponse.getEmail())
+                .build();
+    }
+}
+