feat: 添加 Antigravity (Cloud AI Companion) OAuth 授权支持

backend/internal/handler/admin/antigravity_oauth_handler.go

@@ -0,0 +1,67 @@
+package admin
+
+import (
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/gin-gonic/gin"
+)
+
+type AntigravityOAuthHandler struct {
+	antigravityOAuthService *service.AntigravityOAuthService
+}
+
+func NewAntigravityOAuthHandler(antigravityOAuthService *service.AntigravityOAuthService) *AntigravityOAuthHandler {
+	return &AntigravityOAuthHandler{antigravityOAuthService: antigravityOAuthService}
+}
+
+type AntigravityGenerateAuthURLRequest struct {
+	ProxyID *int64 `json:"proxy_id"`
+}
+
+// GenerateAuthURL generates Google OAuth authorization URL
+// POST /api/v1/admin/antigravity/oauth/auth-url
+func (h *AntigravityOAuthHandler) GenerateAuthURL(c *gin.Context) {
+	var req AntigravityGenerateAuthURLRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "请求无效: "+err.Error())
+		return
+	}
+
+	result, err := h.antigravityOAuthService.GenerateAuthURL(c.Request.Context(), req.ProxyID)
+	if err != nil {
+		response.InternalError(c, "生成授权链接失败: "+err.Error())
+		return
+	}
+
+	response.Success(c, result)
+}
+
+type AntigravityExchangeCodeRequest struct {
+	SessionID string `json:"session_id" binding:"required"`
+	State     string `json:"state" binding:"required"`
+	Code      string `json:"code" binding:"required"`
+	ProxyID   *int64 `json:"proxy_id"`
+}
+
+// ExchangeCode 用 authorization code 交换 token
+// POST /api/v1/admin/antigravity/oauth/exchange-code
+func (h *AntigravityOAuthHandler) ExchangeCode(c *gin.Context) {
+	var req AntigravityExchangeCodeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "请求无效: "+err.Error())
+		return
+	}
+
+	tokenInfo, err := h.antigravityOAuthService.ExchangeCode(c.Request.Context(), &service.AntigravityExchangeCodeInput{
+		SessionID: req.SessionID,
+		State:     req.State,
+		Code:      req.Code,
+		ProxyID:   req.ProxyID,
+	})
+	if err != nil {
+		response.BadRequest(c, "Token 交换失败: "+err.Error())
+		return
+	}
+
+	response.Success(c, tokenInfo)
+}

backend/internal/handler/handler.go

@@ -6,19 +6,20 @@ import (
 
 // AdminHandlers contains all admin-related HTTP handlers
 type AdminHandlers struct {
-	Dashboard    *admin.DashboardHandler
-	User         *admin.UserHandler
-	Group        *admin.GroupHandler
-	Account      *admin.AccountHandler
-	OAuth        *admin.OAuthHandler
-	OpenAIOAuth  *admin.OpenAIOAuthHandler
-	GeminiOAuth  *admin.GeminiOAuthHandler
-	Proxy        *admin.ProxyHandler
-	Redeem       *admin.RedeemHandler
-	Setting      *admin.SettingHandler
-	System       *admin.SystemHandler
-	Subscription *admin.SubscriptionHandler
-	Usage        *admin.UsageHandler
+	Dashboard        *admin.DashboardHandler
+	User             *admin.UserHandler
+	Group            *admin.GroupHandler
+	Account          *admin.AccountHandler
+	OAuth            *admin.OAuthHandler
+	OpenAIOAuth      *admin.OpenAIOAuthHandler
+	GeminiOAuth      *admin.GeminiOAuthHandler
+	AntigravityOAuth *admin.AntigravityOAuthHandler
+	Proxy            *admin.ProxyHandler
+	Redeem           *admin.RedeemHandler
+	Setting          *admin.SettingHandler
+	System           *admin.SystemHandler
+	Subscription     *admin.SubscriptionHandler
+	Usage            *admin.UsageHandler
 }
 
 // Handlers contains all HTTP handlers

backend/internal/handler/wire.go

@@ -16,6 +16,7 @@ func ProvideAdminHandlers(
 	oauthHandler *admin.OAuthHandler,
 	openaiOAuthHandler *admin.OpenAIOAuthHandler,
 	geminiOAuthHandler *admin.GeminiOAuthHandler,
+	antigravityOAuthHandler *admin.AntigravityOAuthHandler,
 	proxyHandler *admin.ProxyHandler,
 	redeemHandler *admin.RedeemHandler,
 	settingHandler *admin.SettingHandler,
@@ -24,19 +25,20 @@ func ProvideAdminHandlers(
 	usageHandler *admin.UsageHandler,
 ) *AdminHandlers {
 	return &AdminHandlers{
-		Dashboard:    dashboardHandler,
-		User:         userHandler,
-		Group:        groupHandler,
-		Account:      accountHandler,
-		OAuth:        oauthHandler,
-		OpenAIOAuth:  openaiOAuthHandler,
-		GeminiOAuth:  geminiOAuthHandler,
-		Proxy:        proxyHandler,
-		Redeem:       redeemHandler,
-		Setting:      settingHandler,
-		System:       systemHandler,
-		Subscription: subscriptionHandler,
-		Usage:        usageHandler,
+		Dashboard:        dashboardHandler,
+		User:             userHandler,
+		Group:            groupHandler,
+		Account:          accountHandler,
+		OAuth:            oauthHandler,
+		OpenAIOAuth:      openaiOAuthHandler,
+		GeminiOAuth:      geminiOAuthHandler,
+		AntigravityOAuth: antigravityOAuthHandler,
+		Proxy:            proxyHandler,
+		Redeem:           redeemHandler,
+		Setting:          settingHandler,
+		System:           systemHandler,
+		Subscription:     subscriptionHandler,
+		Usage:            usageHandler,
 	}
 }
 
@@ -98,6 +100,7 @@ var ProviderSet = wire.NewSet(
 	admin.NewOAuthHandler,
 	admin.NewOpenAIOAuthHandler,
 	admin.NewGeminiOAuthHandler,
+	admin.NewAntigravityOAuthHandler,
 	admin.NewProxyHandler,
 	admin.NewRedeemHandler,
 	admin.NewSettingHandler,