initial: ZeroTier-like P2P mesh VPN server with multi-tenant Web UI

internal/handler/auth.go

@@ -0,0 +1,87 @@
+package handler
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"zeromesh/internal/service"
+)
+
+type AuthHandler struct {
+	authService *service.AuthService
+}
+
+func NewAuthHandler(authService *service.AuthService) *AuthHandler {
+	return &AuthHandler{authService: authService}
+}
+
+type loginReq struct {
+	Username string `json:"username" binding:"required"`
+	Password string `json:"password" binding:"required"`
+}
+
+type registerReq struct {
+	Username string `json:"username" binding:"required"`
+	Password string `json:"password" binding:"required"`
+}
+
+func (h *AuthHandler) Login(c *gin.Context) {
+	var req loginReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	token, user, err := h.authService.Login(req.Username, req.Password)
+	if err != nil {
+		c.JSON(http.StatusUnauthorized, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"token": token,
+		"user":  user,
+	})
+}
+
+func (h *AuthHandler) Register(c *gin.Context) {
+	var req registerReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	user, token, err := h.authService.Register(req.Username, req.Password)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"token": token,
+		"user":  user,
+	})
+}
+
+func (h *AuthHandler) InitAdmin(c *gin.Context) {
+	var req registerReq
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	user, token, err := h.authService.InitAdmin(req.Username, req.Password)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"token": token,
+		"user":  user,
+	})
+}
+
+func (h *AuthHandler) CheckAdmin(c *gin.Context) {
+	exists, err := h.authService.CheckAdmin()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{"admin_exists": exists})
+}