package middleware

import (
	"net/http"
	"strings"

	"github.com/gin-gonic/gin"
	"onixbyte.com/pipely/internal/auth"
)

func AuthMiddleware(authSvc *auth.Service) gin.HandlerFunc {
	return func(c *gin.Context) {
		token := extractToken(c)
		if token == "" {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorisation token is missing"})
			return
		}

		user, err := authSvc.ValidateToken(token)
		if err != nil {
			c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Unauthorised: " + err.Error()})
			return
		}

		c.Set("user", user)
		c.Next()
	}
}

func extractToken(c *gin.Context) string {
	// First try the Authorization header
	authHeader := c.GetHeader("Authorization")
	if authHeader != "" {
		parts := strings.SplitN(authHeader, " ", 2)
		if len(parts) == 2 && parts[0] == "Bearer" {
			return parts[1]
		}
	}

	// Fall back to the cookie set at login
	if cookie, err := c.Cookie("pipely_token"); err == nil {
		return cookie
	}

	return ""
}