// Package middleware 提供 Gin 中间件:请求日志、panic 恢复、跨域。
package middleware

import (
	"log/slog"
	"time"

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

// Logger 打印每个 HTTP 请求的方法、路径、状态、耗时与客户端 IP。
func Logger() gin.HandlerFunc {
	return func(c *gin.Context) {
		start := time.Now()
		c.Next()
		slog.Info("http",
			"method", c.Request.Method,
			"path", c.Request.URL.Path,
			"status", c.Writer.Status(),
			"size", c.Writer.Size(),
			"duration_ms", time.Since(start).Milliseconds(),
			"client_ip", c.ClientIP(),
		)
	}
}