package middleware

import (
	"net/http"
	"strings"

	"cardverse/internal/pkg/response"
	"cardverse/internal/pkg/utils"

	"github.com/gin-gonic/gin"
)

func AuthRequired() gin.HandlerFunc {
	return func(c *gin.Context) {
		authHeader := c.GetHeader("Authorization")
		if authHeader == "" {
			response.Error(c, http.StatusUnauthorized, "token tidak ditemukan", nil)
			c.Abort()
			return
		}

		parts := strings.SplitN(authHeader, " ", 2)
		if len(parts) != 2 || strings.ToLower(parts[0]) != "bearer" {
			response.Error(c, http.StatusUnauthorized, "format token tidak valid", nil)
			c.Abort()
			return
		}

		claims, err := utils.ValidateToken(parts[1])
		if err != nil {
			response.Error(c, http.StatusUnauthorized, "token tidak valid atau kedaluwarsa", err.Error())
			c.Abort()
			return
		}

		c.Set("user_id", claims.UserID)
		c.Set("email", claims.Email)
		c.Set("role", claims.Role)
		c.Next()
	}
}

func RequireRoles(allowedRoles ...string) gin.HandlerFunc {
	return func(c *gin.Context) {
		roleVal, exists := c.Get("role")
		if !exists {
			response.Error(c, http.StatusUnauthorized, "akses ditolak: autentikasi diperlukan", nil)
			c.Abort()
			return
		}

		userRole, ok := roleVal.(string)
		if !ok {
			response.Error(c, http.StatusForbidden, "akses ditolak: role tidak valid", nil)
			c.Abort()
			return
		}

		for _, role := range allowedRoles {
			if strings.EqualFold(userRole, role) {
				c.Next()
				return
			}
		}

		response.Error(c, http.StatusForbidden, "akses ditolak: anda tidak memiliki hak akses", nil)
		c.Abort()
	}
}