package auth

import (
	"net/http"
	"strings"

	"photum-backend/internal/config"

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

func AuthMiddleware(cfg *config.Config) gin.HandlerFunc {
	return func(c *gin.Context) {
		authHeader := c.GetHeader("Authorization")
		if authHeader == "" {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "authorization header required"})
			return
		}

		parts := strings.Split(authHeader, " ")
		var tokenString string
		if len(parts) == 2 && parts[0] == "Bearer" {
			tokenString = parts[1]
		} else if len(parts) == 1 && parts[0] != "" {
			tokenString = parts[0]
		} else {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid authorization header format"})
			return
		}
		claims, err := ValidateToken(tokenString, cfg.JwtAccessSecret)
		if err != nil {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "invalid token"})
			return
		}

		c.Set("userID", claims.UserID)
		c.Set("role", claims.Role)
		c.Next()
	}
}