package utils

import (
	"bufio"
	"encoding/json"
	"errors"
	"fmt"
	"os"
)

func GetVersion() (string, error) {
	data, err := os.ReadFile(PackConfPath)
	if err != nil {
		fmt.Println(err)
		return "", errors.New("读取文件失败")
	}

	packConf := make(map[string]interface{})
	err = json.Unmarshal(data, &packConf)
	if err != nil {
		fmt.Println(err)
		return "", errors.New("解析文件失败")
	}
	if _, ok := packConf["version"]; !ok {
		return "", errors.New("没有版本信息")
	}

	return packConf["version"].(string), nil
}

func ReadConfig() (*Uploader, error) {
	conf, err := os.Open(ConfigPath)
	if err != nil {
		fmt.Println(err)
		return nil, errors.New("打开文件失败")
	}
	reader := bufio.NewReader(conf)
	decoder := json.NewDecoder(reader)
	config := &Uploader{}
	err = decoder.Decode(config)
	if err != nil {
		return nil, errors.New("解析失败")
	}
	return config, nil
}

func ReadAppConfig() (*App, error) {
	conf, err := os.Open(AppConfPath)
	if err != nil {
		fmt.Println(err)
		return nil, errors.New("打开文件失败")
	}

	reader := bufio.NewReader(conf)
	decoder := json.NewDecoder(reader)
	appConf := &App{}
	err = decoder.Decode(appConf)
	if err != nil {
		return nil, errors.New("解析失败")
	}
	return appConf, nil
}

func WriteAppConfig(config *App, dest string) error {
	data, err := json.MarshalIndent(config, "", "  ")
	if err != nil {
		fmt.Println(err)
		return errors.New("json marshal err")
	}
	err = os.WriteFile(dest, data, 0777)
	if err != nil {
		fmt.Println(err)
		return errors.New("写入配置文件出错")
	}
	return nil
}