Add github oauth.

object/check.go

@@ -21,3 +21,19 @@ func CheckUserLogin(userId string, password string) string {
 
 	return ""
 }
+
+func HasMail(email string) string {
+	user := GetMail(email)
+	if user != nil {
+		return user.Email
+	}
+	return ""
+}
+
+func HasGithub(github string) string {
+	user := GetGithub(github)
+	if user != nil {
+		return user.Github
+	}
+	return ""
+}

object/user.go

@@ -31,6 +31,8 @@ type User struct {
 	Avatar       string `xorm:"varchar(100)" json:"avatar"`
 	Email        string `xorm:"varchar(100)" json:"email"`
 	Phone        string `xorm:"varchar(100)" json:"phone"`
+
+	Github string `xorm:"varchar(100)" json:"github"`
 }
 
 func GetGlobalUsers() []*User {
@@ -114,3 +116,40 @@ func DeleteUser(user *User) bool {
 
 	return affected != 0
 }
+
+func GetMail(email string) *User {
+	user := User{Email: email}
+	existed, err := adapter.engine.Get(&user)
+	if err != nil {
+		panic(err)
+	}
+
+	if existed {
+		return &user
+	} else {
+		return nil
+	}
+}
+
+func GetGithub(github string) *User {
+	user := User{Github: github}
+	existed, err := adapter.engine.Get(&user)
+	if err != nil {
+		panic(err)
+	}
+
+	if existed {
+		return &user
+	} else {
+		return nil
+	}
+}
+
+func LinkUserAccount(user, field, value string) bool {
+	affected, err := adapter.engine.Table(new(User)).ID(user).Update(map[string]interface{}{field: value})
+	if err != nil {
+		panic(err)
+	}
+
+	return affected != 0
+}