更新 Go 版本至 1.23.0，添加管理员功能，包括管理员登录、用户和客户端管理，新增相应的模板和中间件，优化数据库模型以支持管理员管理。

handlers/admin_handler.go

@@ -0,0 +1,82 @@
+package handlers
+
+import (
+	"net/http"
+	"strconv"
+
+	"oidc-oauth2-server/services"
+
+	"github.com/gin-contrib/sessions"
+	"github.com/gin-gonic/gin"
+)
+
+type AdminHandler struct {
+	adminService *services.AdminService
+}
+
+func NewAdminHandler(adminService *services.AdminService) *AdminHandler {
+	return &AdminHandler{adminService: adminService}
+}
+
+func (h *AdminHandler) ShowAdminLogin(c *gin.Context) {
+	c.HTML(http.StatusOK, "admin_login.html", gin.H{})
+}
+
+func (h *AdminHandler) HandleAdminLogin(c *gin.Context) {
+	username := c.PostForm("username")
+	password := c.PostForm("password")
+
+	admin, err := h.adminService.Authenticate(username, password)
+	if err != nil {
+		c.HTML(http.StatusBadRequest, "admin_login.html", gin.H{
+			"error": "Invalid credentials",
+		})
+		return
+	}
+
+	session := sessions.Default(c)
+	session.Set("admin_id", admin.ID)
+	session.Save()
+
+	c.Redirect(http.StatusFound, "/admin/dashboard")
+}
+
+func (h *AdminHandler) Dashboard(c *gin.Context) {
+	c.HTML(http.StatusOK, "admin_dashboard.html", gin.H{})
+}
+
+func (h *AdminHandler) ListUsers(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
+
+	users, total, err := h.adminService.ListUsers(page, pageSize)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.HTML(http.StatusOK, "admin_users.html", gin.H{
+		"users":    users,
+		"total":    total,
+		"page":     page,
+		"pageSize": pageSize,
+	})
+}
+
+func (h *AdminHandler) ListClients(c *gin.Context) {
+	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
+	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "10"))
+
+	clients, total, err := h.adminService.ListClients(page, pageSize)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+
+	c.HTML(http.StatusOK, "admin_clients.html", gin.H{
+		"clients":  clients,
+		"total":    total,
+		"page":     page,
+		"pageSize": pageSize,
+	})
+}

handlers/auth_handler.go

@@ -0,0 +1,42 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+)
+
+// ShowSignup 显示注册页面
+func (h *AuthHandler) ShowSignup(c *gin.Context) {
+	c.HTML(http.StatusOK, "signup.html", gin.H{
+		"title": "注册",
+	})
+}
+
+// HandleSignup 处理用户注册
+func (h *AuthHandler) HandleSignup(c *gin.Context) {
+	username := c.PostForm("username")
+	password := c.PostForm("password")
+	email := c.PostForm("email")
+
+	if username == "" || password == "" || email == "" {
+		c.HTML(http.StatusBadRequest, "signup.html", gin.H{
+			"title": "注册",
+			"error": "用户名、密码和邮箱都不能为空",
+		})
+		return
+	}
+
+	// 创建新用户
+	_, err := h.authService.CreateUser(username, password, email)
+	if err != nil {
+		c.HTML(http.StatusBadRequest, "signup.html", gin.H{
+			"title": "注册",
+			"error": "注册失败：" + err.Error(),
+		})
+		return
+	}
+
+	// 注册成功后重定向到登录页
+	c.Redirect(http.StatusFound, "/login")
+}