From 081723600facf34fd2dba385ca79b12b503d59bc Mon Sep 17 00:00:00 2001
From: kim <haerong22@naver.com>
Date: Sat, 12 Dec 2020 01:49:10 +0900
Subject: [PATCH] facebook oauth login

---
 .../oauth/PrincipalOauth2UserService.java     | 18 +++++++++--
 .../oauth/provider/FacebookUserInfo.java      | 32 +++++++++++++++++++
 .../config/oauth/provider/GoogleUserInfo.java | 32 +++++++++++++++++++
 .../config/oauth/provider/OAuth2UserInfo.java |  8 +++++
 .../src/main/resources/application.yml        |  7 ++++
 .../main/resources/templates/loginForm.html   |  1 +
 6 files changed, 95 insertions(+), 3 deletions(-)
 create mode 100644 spring-security/src/main/java/com/spring/security1/config/oauth/provider/FacebookUserInfo.java
 create mode 100644 spring-security/src/main/java/com/spring/security1/config/oauth/provider/GoogleUserInfo.java
 create mode 100644 spring-security/src/main/java/com/spring/security1/config/oauth/provider/OAuth2UserInfo.java

diff --git a/spring-security/src/main/java/com/spring/security1/config/oauth/PrincipalOauth2UserService.java b/spring-security/src/main/java/com/spring/security1/config/oauth/PrincipalOauth2UserService.java
index e5c27e3e..dfd0e29c 100644
--- a/spring-security/src/main/java/com/spring/security1/config/oauth/PrincipalOauth2UserService.java
+++ b/spring-security/src/main/java/com/spring/security1/config/oauth/PrincipalOauth2UserService.java
@@ -1,6 +1,9 @@
 package com.spring.security1.config.oauth;
 
 import com.spring.security1.config.auth.PrincipalDetails;
+import com.spring.security1.config.oauth.provider.FacebookUserInfo;
+import com.spring.security1.config.oauth.provider.GoogleUserInfo;
+import com.spring.security1.config.oauth.provider.OAuth2UserInfo;
 import com.spring.security1.model.User;
 import com.spring.security1.repository.UserRepository;
 import lombok.RequiredArgsConstructor;
@@ -30,11 +33,20 @@ public class PrincipalOauth2UserService extends DefaultOAuth2UserService {
         // userRequest 정보 -> loadUser함수 -> 구글로 부터 회원 프로필 받아준다.
         System.out.println("userRequest: "+ oAuth2User.getAttributes());
 
-        String provider = userRequest.getClientRegistration().getRegistrationId(); // google
-        String providerId = oAuth2User.getAttribute("sub");
+        OAuth2UserInfo oAuth2UserInfo = null;
+        if(userRequest.getClientRegistration().getRegistrationId().equals("google")) {
+            System.out.println("구글 로그인 요청");
+            oAuth2UserInfo = new GoogleUserInfo(oAuth2User.getAttributes());
+        } else if(userRequest.getClientRegistration().getRegistrationId().equals("facebook")){
+            System.out.println("페이스북 로그인 요청");
+            oAuth2UserInfo = new FacebookUserInfo(oAuth2User.getAttributes());
+        }
+
+        String provider = oAuth2UserInfo.getProvider();
+        String providerId = oAuth2UserInfo.getProviderId();
         String username = provider+"_"+providerId;
         String password = bCryptPasswordEncoder.encode("패스워드");
-        String email = oAuth2User.getAttribute("email");
+        String email = oAuth2UserInfo.getEmail();
         String role = "ROLE_USER";
 
         User userEntity = userRepository.findByUsername(username);
diff --git a/spring-security/src/main/java/com/spring/security1/config/oauth/provider/FacebookUserInfo.java b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/FacebookUserInfo.java
new file mode 100644
index 00000000..eca002ed
--- /dev/null
+++ b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/FacebookUserInfo.java
@@ -0,0 +1,32 @@
+package com.spring.security1.config.oauth.provider;
+
+import java.util.Map;
+
+public class FacebookUserInfo implements OAuth2UserInfo {
+
+    private Map<String, Object> attributes; // oauth2User.getAttributes()
+
+    public FacebookUserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProviderId() {
+        return (String) attributes.get("id");
+    }
+
+    @Override
+    public String getProvider() {
+        return "facebook";
+    }
+
+    @Override
+    public String getEmail() {
+        return (String) attributes.get("email");
+    }
+
+    @Override
+    public String getName() {
+        return (String) attributes.get("name");
+    }
+}
diff --git a/spring-security/src/main/java/com/spring/security1/config/oauth/provider/GoogleUserInfo.java b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/GoogleUserInfo.java
new file mode 100644
index 00000000..04476149
--- /dev/null
+++ b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/GoogleUserInfo.java
@@ -0,0 +1,32 @@
+package com.spring.security1.config.oauth.provider;
+
+import java.util.Map;
+
+public class GoogleUserInfo implements OAuth2UserInfo {
+
+    private Map<String, Object> attributes; // oauth2User.getAttributes()
+
+    public GoogleUserInfo(Map<String, Object> attributes) {
+        this.attributes = attributes;
+    }
+
+    @Override
+    public String getProviderId() {
+        return (String) attributes.get("sub");
+    }
+
+    @Override
+    public String getProvider() {
+        return "google";
+    }
+
+    @Override
+    public String getEmail() {
+        return (String) attributes.get("email");
+    }
+
+    @Override
+    public String getName() {
+        return (String) attributes.get("name");
+    }
+}
diff --git a/spring-security/src/main/java/com/spring/security1/config/oauth/provider/OAuth2UserInfo.java b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/OAuth2UserInfo.java
new file mode 100644
index 00000000..1cfeb7da
--- /dev/null
+++ b/spring-security/src/main/java/com/spring/security1/config/oauth/provider/OAuth2UserInfo.java
@@ -0,0 +1,8 @@
+package com.spring.security1.config.oauth.provider;
+
+public interface OAuth2UserInfo {
+    String getProviderId();
+    String getProvider();
+    String getEmail();
+    String getName();
+}
diff --git a/spring-security/src/main/resources/application.yml b/spring-security/src/main/resources/application.yml
index 24f2f3a9..79b05be0 100644
--- a/spring-security/src/main/resources/application.yml
+++ b/spring-security/src/main/resources/application.yml
@@ -31,3 +31,10 @@ spring:
             scope:
             - email
             - profile
+
+          facebook:
+            client-id: 1135697936892001
+            client-secret: 681e0ce30d4fdf4df0ed28874a85b1af
+            scope:
+              - email
+              - public_profile
diff --git a/spring-security/src/main/resources/templates/loginForm.html b/spring-security/src/main/resources/templates/loginForm.html
index 2bd90d27..d5f9f938 100644
--- a/spring-security/src/main/resources/templates/loginForm.html
+++ b/spring-security/src/main/resources/templates/loginForm.html
@@ -13,6 +13,7 @@
         <button>로그인</button>
     </form>
     <a href="/oauth2/authorization/google">구글 로그인</a>
+    <a href="/oauth2/authorization/facebook">페이스북 로그인</a>
     <a href="/joinForm">회원가입을 아직 하지 않으셨나요?</a>
 </body>
 </html>
\ No newline at end of file