package middleware

import (
	"time"

	"github.com/gin-gonic/gin"
	"go.uber.org/zap"
)

// Logger 基于 zap 的请求日志中间件
// 只记录 method/path/status/latency/request_id，**不记录请求体**（避免泄露用户输入）
func Logger(logger *zap.Logger) gin.HandlerFunc {
	return func(c *gin.Context) {
		start := time.Now()
		c.Next()
		latency := time.Since(start)

		logger.Info("HTTP",
			zap.String("method", c.Request.Method),
			zap.String("path", c.Request.URL.Path),
			zap.Int("status", c.Writer.Status()),
			zap.Int("size", c.Writer.Size()),
			zap.String("remote_ip", c.ClientIP()),
			zap.String("user_agent", c.Request.UserAgent()),
			zap.String("request_id", c.GetString("request_id")),
			zap.Duration("latency", latency),
		)
	}
}