feat: 添加本地备份提供者支持，更新配置类型并实现相关功能

Author: tbxark

config/config.go

@@ -8,7 +8,7 @@ type BackupProviderConfigType string
 
 const (
 	BackupProviderConfigTypeGitea BackupProviderConfigType = "gitea"
-	BackupProviderConfigTypeFile  BackupProviderConfigType = "file"
+	BackupProviderConfigTypeLocal BackupProviderConfigType = "local"
 )
 
 type UnmatchedRepoAction string

provider/local/local.go

@@ -0,0 +1,117 @@
+package local
+
+import (
+	"fmt"
+	"github.com/TBXark/github-backup/provider/provider"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+)
+
+type Config struct {
+	Root      string `json:"root"`
+	Questions bool   `json:"questions"`
+}
+
+var _ provider.Provider = &Local{}
+
+type Local struct {
+	conf *Config
+}
+
+func NewLocal(conf *Config) *Local {
+	return &Local{conf: conf}
+}
+
+func (l *Local) LoadRepos(owner *provider.Owner) ([]string, error) {
+	ownerPath := filepath.Join(l.conf.Root, owner.Name)
+	dirEntries, err := os.ReadDir(ownerPath)
+	if err != nil {
+		return nil, err
+	}
+	repos := make([]string, 0)
+	for _, dirEntry := range dirEntries {
+		if dirEntry.IsDir() && isGitRepository(filepath.Join(ownerPath, dirEntry.Name())) {
+			repos = append(repos, dirEntry.Name())
+		}
+	}
+	return repos, nil
+}
+
+func (l *Local) MigrateRepo(from *provider.Owner, to *provider.Owner, repo *provider.Repo) (string, error) {
+	if l.conf.Questions && !question(fmt.Sprintf("Are you sure you want to migrate %s/%s to %s/%s? [y/n]: ", from.Name, repo.Name, to.Name, repo.Name)) {
+		return "skip", nil
+	}
+	ownerPath := filepath.Join(l.conf.Root, to.Name)
+	_, err := os.Stat(ownerPath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			if e := os.MkdirAll(ownerPath, os.ModePerm); e != nil {
+				return "", e
+			}
+		} else {
+			return "", err
+		}
+	}
+	repoPath := filepath.Join(ownerPath, repo.Name)
+	_, err = os.Stat(repoPath)
+	gitUrl := fmt.Sprintf("git@github.com:%s/%s.git", from.Name, repo.Name)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = gitClone(gitUrl, repoPath)
+			if err != nil {
+				return "success", err
+			}
+		} else {
+			return "", err
+		}
+	}
+	err = gitPull(repoPath)
+	if err != nil {
+		return "fail", err
+	}
+	return "success", nil
+}
+
+func (l *Local) DeleteRepo(owner, repo string) (string, error) {
+	if l.conf.Questions && !question(fmt.Sprintf("Are you sure you want to delete %s/%s? [y/n]: ", owner, repo)) {
+		return "skip", nil
+	}
+	repoPath := filepath.Join(l.conf.Root, owner, repo)
+	err := os.RemoveAll(repoPath)
+	if err != nil {
+		return "fail", err
+	}
+	return "success", nil
+}
+
+func isGitRepository(path string) bool {
+	cmd := exec.Command("git", "rev-parse", "--is-inside-work-tree")
+	cmd.Dir = path
+	err := cmd.Run()
+	return err == nil
+}
+
+func gitClone(url, path string) error {
+	log.Printf("cloning %s", url)
+	cmd := exec.Command("git", "clone", url, path)
+	return cmd.Run()
+}
+
+func gitPull(path string) error {
+	log.Printf("pulling %s", path)
+	cmd := exec.Command("git", "pull")
+	cmd.Dir = path
+	return cmd.Run()
+}
+
+func question(message string) bool {
+	var response string
+	fmt.Print(message)
+	_, err := fmt.Scanln(&response)
+	if err != nil {
+		return false
+	}
+	return response == "y"
+}

task.go

@@ -5,6 +5,7 @@ import (
 	"github.com/TBXark/github-backup/config"
 	"github.com/TBXark/github-backup/provider/gitea"
 	"github.com/TBXark/github-backup/provider/github"
+	"github.com/TBXark/github-backup/provider/local"
 	"github.com/TBXark/github-backup/provider/provider"
 	"github.com/TBXark/github-backup/utils/matcher"
 	"log"
@@ -18,6 +19,12 @@ func BuildBackupProvider(conf *config.BackupProviderConfig) (provider.Provider,
 			return nil, err
 		}
 		return gitea.NewGitea(c), nil
+	case config.BackupProviderConfigTypeLocal:
+		c, err := config.Convert[local.Config](conf.Config)
+		if err != nil {
+			return nil, err
+		}
+		return local.NewLocal(c), nil
 	}
 	return nil, fmt.Errorf("unknown backup provider type: %s", conf.Type)
 }