package utils

import (
	"errors"
	"io"
	"os"
	"path/filepath"
)

// 将字符串写入文件
func StringToFile(path, content string) error {
	startF, err := os.Create(path)
	if err != nil {
		return errors.New("os.Create create file " + path + " error:" + err.Error())
	}
	defer startF.Close()
	_, err = io.WriteString(startF, content)
	if err != nil {
		return errors.New("io.WriteString to " + path + " error:" + err.Error())
	}
	return nil
}

// 递归遍历文件夹
// rootDir: 文件夹根目录
// s: 存储文件名的切片
// filter: 过滤条件：".git", ".idea", ".vscode", ".gitignore", ".gitea", ".github", ".golangci.yml", "*.pyc"
func FileTree(rootDir string, s []string, filter []string) ([]string, error) {
	rd, err := os.ReadDir(rootDir)
	if err != nil {
		return s, err
	}
	for _, fi := range rd {
		// 检查文件名是否匹配任何一个过滤模式
		matched := false
		for _, item := range filter {
			exists, err := filepath.Match(item, fi.Name())
			if err != nil {
				continue
			}
			if exists {
				matched = true
				break
			}
		}

		if matched {
			continue
		}

		if fi.IsDir() {
			fullDir := rootDir + "/" + fi.Name()
			s, err = FileTree(fullDir, s, filter)
			if err != nil {
				return s, err
			}
		} else {
			fullName := rootDir + "/" + fi.Name()
			s = append(s, fullName)
		}
	}
	return s, nil
}