package middleware

import (
	"fmt"
	"net/http"
	"runtime/debug"

	"git.linuxforward.com/byom/byom-core/logger"
	"github.com/gin-gonic/gin"
	"github.com/sirupsen/logrus"
)

// Recovery returns a middleware that recovers from panics and logs the stack trace
func Recovery(log *logrus.Logger) gin.HandlerFunc {
	recoveryLogger := logger.NewLogger("recovery")
	return func(c *gin.Context) {
		defer func() {
			if err := recover(); err != nil {
				// Get request ID if available
				requestID := c.GetString(RequestIDKey)
				if requestID == "" {
					requestID = "no-request-id"
				}

				// Get stack trace
				stack := string(debug.Stack())

				// Add request ID to logger
				reqLogger := logger.WithRequestID(recoveryLogger, requestID)

				// Log the panic with context
				reqLogger.WithFields(logrus.Fields{
					"error":     fmt.Sprintf("%v", err),
					"stack":     stack,
					"method":    c.Request.Method,
					"path":      c.Request.URL.Path,
					"client_ip": c.ClientIP(),
				}).Error("Panic recovered")

				// Return a 500 error to the client
				c.AbortWithStatusJSON(http.StatusInternalServerError, gin.H{
					"error": "Internal server error",
					"code":  "INTERNAL_SERVER_ERROR",
				})
			}
		}()

		c.Next()
	}
}