Sub2API v1.0 - AI API 网关（二开初始版本，基于上游 Wei-Shaw/sub2api）

backend/internal/handler/auth_oauth_captcha_start.go

@@ -0,0 +1,50 @@
+package handler
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/ip"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/gin-gonic/gin"
+)
+
+type oauthStartCaptchaRequest struct {
+	// TurnstileToken 承载阿里云验证码的 captchaVerifyParam（复用既有请求字段名）
+	TurnstileToken        string `json:"turnstile_token"`
+	TencentCaptchaTicket  string `json:"tencent_captcha_ticket"`
+	TencentCaptchaRandstr string `json:"tencent_captcha_randstr"`
+}
+
+type oauthStartResponse struct {
+	AuthorizeURL string `json:"authorize_url"`
+}
+
+func (h *AuthHandler) requireActionCaptchaForOAuthLoginStart(c *gin.Context) bool {
+	if strings.HasSuffix(strings.TrimRight(c.Request.URL.Path, "/"), "/bind/start") {
+		return true
+	}
+
+	var req oauthStartCaptchaRequest
+	if c.Request.Method == http.MethodPost {
+		_ = c.ShouldBindJSON(&req)
+	}
+	if err := h.authService.VerifyActionCaptchaIfEnabled(c.Request.Context(), service.CaptchaProof{
+		TurnstileToken: req.TurnstileToken,
+		TencentTicket:  req.TencentCaptchaTicket,
+		TencentRandstr: req.TencentCaptchaRandstr,
+	}, ip.GetClientIP(c)); err != nil {
+		response.ErrorFrom(c, err)
+		return false
+	}
+	return true
+}
+
+func respondOAuthStart(c *gin.Context, authorizeURL string) {
+	if c.Request.Method == http.MethodPost {
+		response.Success(c, oauthStartResponse{AuthorizeURL: authorizeURL})
+		return
+	}
+	c.Redirect(http.StatusFound, authorizeURL)
+}