/*
 * Copyright 2022 CloudWeGo Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package main

import (
	"context"
	"log"
	"os"
	"path"
	"time"

	"github.com/cloudwego/hertz/pkg/app"
	"github.com/cloudwego/hertz/pkg/app/server"
	"github.com/cloudwego/hertz/pkg/common/hlog"
	"github.com/cloudwego/hertz/pkg/protocol/consts"
	hertzZerolog "github.com/hertz-contrib/logger/zerolog"
	"gopkg.in/natefinch/lumberjack.v2"
)

func main() {
	h := server.Default()

	// Customizable output directory.
	var logFilePath string
	dir := "./hlog"
	logFilePath = dir + "/logs/"
	if err := os.MkdirAll(logFilePath, 0o777); err != nil {
		log.Println(err.Error())
		return
	}

	// Set filename to date
	logFileName := time.Now().Format("2006-01-02") + ".log"
	fileName := path.Join(logFilePath, logFileName)
	if _, err := os.Stat(fileName); err != nil {
		if _, err := os.Create(fileName); err != nil {
			log.Println(err.Error())
			return
		}
	}

	// For zap detailed settings, please refer to https://github.com/hertz-contrib/logger/tree/main/zerolog and https://github.com/rs/zerolog
	// hlog will warp a layer of zerolog, so you need to calculate the depth of the caller file separately.
	logger := hertzZerolog.New(hertzZerolog.WithCallerSkipFrameCount(5))
	// Provides compression and deletion
	lumberjackLogger := &lumberjack.Logger{
		Filename:   fileName,
		MaxSize:    20,   // A file can be up to 20M.
		MaxBackups: 5,    // Save up to 5 files at the same time.
		MaxAge:     10,   // A file can exist for a maximum of 10 days.
		Compress:   true, // Compress with gzip.
	}

	logger.SetOutput(lumberjackLogger)
	logger.SetLevel(hlog.LevelDebug)
	// if you want to output the log to the file and the stdout at the same time, you can use the following codes

	// fileWriter := io.MultiWriter(lumberjackLogger, os.Stdout)
	// logger.SetOutput(fileWriter)
	hlog.SetLogger(logger)

	h.GET("/hello", func(ctx context.Context, c *app.RequestContext) {
		hlog.Info("Hello, hertz")
		c.String(consts.StatusOK, "Hello hertz!")
	})

	h.Spin()
}
