package controllers

import (
	"fmt"
	"net/http"

	"gitea.zjmud.com/phyer/rbac/models"
	"gitea.zjmud.com/phyer/rbac/repositories"
	"gitea.zjmud.com/phyer/rbac/utils"
	"github.com/gin-gonic/gin"
	"github.com/go-redis/redis/v8"
	"github.com/go-redis/redis/v8"
	"gorm.io/gorm"
)

type AuthController struct {
	DB    *gorm.DB
	Redis *redis.Client
}

func NewAuthController(db *gorm.DB, redis *redis.Client) *AuthController {
	return &AuthController{DB: db, Redis: redis}
}

func (ac *AuthController) Login(c *gin.Context) {
	type LoginRequest struct {
		Username string `json:"username" binding:"required"`
		Password string `json:"password" binding:"required"`
	}

	var req LoginRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		utils.Error(c, http.StatusBadRequest, "Invalid request format")
		return
	}

	userRepo := repositories.NewUserRepository(ac.DB)
	user, err := userRepo.FindByUsername(req.Username)
	if err != nil {
		utils.Error(c, http.StatusUnauthorized, "Invalid credentials")
		return
	}


	hashedPassword, err := models.HashPassword(req.Password)
	if err != nil {
		utils.Error(c, http.StatusUnauthorized, "Invalid credentials")
		return
	}
	hashedHex := fmt.Sprintf("%x", hashedPassword)
	if hashedHex != user.Password {
	if err != nil {
		utils.Error(c, http.StatusUnauthorized, "Invalid credentials")
		return
	}
	
	hashedHex := fmt.Sprintf("%x", hashedPassword)
	if hashedHex != user.Password {
		utils.Error(c, http.StatusUnauthorized, "Invalid credentials")
		return
	}

	token, err := utils.GenerateToken(user.ID)
	if err != nil {
		utils.Error(c, http.StatusInternalServerError, "Failed to generate token")
		return
	}

	utils.Success(c, gin.H{"token": token})
}

func (ac *AuthController) Register(c *gin.Context) {
	type RegisterRequest struct {
		Username string `json:"username" binding:"required"`
		Password string `json:"password" binding:"required"`
		Email    string `json:"email" binding:"required,email"`
	}

	var req RegisterRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		utils.Error(c, http.StatusBadRequest, "Invalid request format")
		return
	}

	hashedPassword, err := models.HashPassword(req.Password)
	if err != nil {
		utils.Error(c, http.StatusInternalServerError, "Failed to hash password")
		return
	}

	newUser := &models.User{
		Username: req.Username,
		Password: string(hashedPassword),
		Email:    req.Email,
	}

	userRepo := repositories.NewUserRepository(ac.DB)
	if err := userRepo.Create(newUser); err != nil {
		utils.Error(c, http.StatusConflict, "User already exists")
		return
	}

	utils.Success(c, newUser)
}