🎨 Improve the code structure

drivers/google/driver.go

@@ -0,0 +1,192 @@
+package google
+
+import (
+	"fmt"
+	"github.com/Xhofe/alist/conf"
+	"github.com/Xhofe/alist/drivers/base"
+	"github.com/Xhofe/alist/model"
+	"github.com/Xhofe/alist/utils"
+	"github.com/gin-gonic/gin"
+	log "github.com/sirupsen/logrus"
+	"path/filepath"
+)
+
+type GoogleDrive struct{}
+
+func (driver GoogleDrive) Config() base.DriverConfig {
+	return base.DriverConfig{
+		Name: "GoogleDrive",
+		OnlyProxy: true,
+	}
+}
+
+func (driver GoogleDrive) Items() []base.Item {
+	return []base.Item{
+		{
+			Name:     "client_id",
+			Label:    "client id",
+			Type:     base.TypeString,
+			Required: true,
+		},
+		{
+			Name:     "client_secret",
+			Label:    "client secret",
+			Type:     base.TypeString,
+			Required: true,
+		},
+		{
+			Name:     "refresh_token",
+			Label:    "refresh token",
+			Type:     base.TypeString,
+			Required: true,
+		},
+		{
+			Name:     "root_folder",
+			Label:    "root folder file_id",
+			Type:     base.TypeString,
+			Required: false,
+		},
+	}
+}
+
+func (driver GoogleDrive) Save(account *model.Account, old *model.Account) error {
+	account.Proxy = true
+	err := driver.RefreshToken(account)
+	if err != nil {
+		account.Status = err.Error()
+		_ = model.SaveAccount(account)
+		return err
+	}
+	if account.RootFolder == "" {
+		account.RootFolder = "root"
+	}
+	account.Status = "work"
+	_ = model.SaveAccount(account)
+	return nil
+}
+
+func (driver GoogleDrive) File(path string, account *model.Account) (*model.File, error) {
+	path = utils.ParsePath(path)
+	if path == "/" {
+		return &model.File{
+			Id:        account.RootFolder,
+			Name:      account.Name,
+			Size:      0,
+			Type:      conf.FOLDER,
+			Driver:    driver.Config().Name,
+			UpdatedAt: account.UpdatedAt,
+		}, nil
+	}
+	dir, name := filepath.Split(path)
+	files, err := driver.Files(dir, account)
+	if err != nil {
+		return nil, err
+	}
+	for _, file := range files {
+		if file.Name == name {
+			return &file, nil
+		}
+	}
+	return nil, base.ErrPathNotFound
+}
+
+func (driver GoogleDrive) Files(path string, account *model.Account) ([]model.File, error) {
+	path = utils.ParsePath(path)
+	var rawFiles []GoogleFile
+	cache, err := conf.Cache.Get(conf.Ctx, fmt.Sprintf("%s%s", account.Name, path))
+	if err == nil {
+		rawFiles, _ = cache.([]GoogleFile)
+	} else {
+		file, err := driver.File(path, account)
+		if err != nil {
+			return nil, err
+		}
+		rawFiles, err = driver.GetFiles(file.Id, account)
+		if err != nil {
+			return nil, err
+		}
+		if len(rawFiles) > 0 {
+			_ = conf.Cache.Set(conf.Ctx, fmt.Sprintf("%s%s", account.Name, path), rawFiles, nil)
+		}
+	}
+	files := make([]model.File, 0)
+	for _, file := range rawFiles {
+		files = append(files, *driver.FormatFile(&file))
+	}
+	return files, nil
+}
+
+func (driver GoogleDrive) Link(path string, account *model.Account) (string, error) {
+	file, err := driver.File(path, account)
+	if err != nil {
+		return "", err
+	}
+	if file.Type == conf.FOLDER {
+		return "", base.ErrNotFile
+	}
+	link := fmt.Sprintf("https://www.googleapis.com/drive/v3/files/%s?includeItemsFromAllDrives=true&supportsAllDrives=true", file.Id)
+	var e GoogleError
+	_, _ = googleClient.R().SetError(&e).
+		SetHeader("Authorization", "Bearer "+account.AccessToken).
+		Get(link)
+	if e.Error.Code != 0 {
+		if e.Error.Code == 401 {
+			err = driver.RefreshToken(account)
+			if err != nil {
+				_ = model.SaveAccount(account)
+				return "", err
+			}
+			return driver.Link(path, account)
+		}
+		return "", fmt.Errorf("%s: %v", e.Error.Message, e.Error.Errors)
+	}
+	return link + "&alt=media", nil
+}
+
+func (driver GoogleDrive) Path(path string, account *model.Account) (*model.File, []model.File, error) {
+	path = utils.ParsePath(path)
+	log.Debugf("google path: %s", path)
+	file, err := driver.File(path, account)
+	if err != nil {
+		return nil, nil, err
+	}
+	if file.Type != conf.FOLDER {
+		//file.Url, _ = driver.Link(path, account)
+		return file, nil, nil
+	}
+	files, err := driver.Files(path, account)
+	if err != nil {
+		return nil, nil, err
+	}
+	return nil, files, nil
+}
+
+func (driver GoogleDrive) Proxy(c *gin.Context, account *model.Account) {
+	c.Request.Header.Add("Authorization", "Bearer "+account.AccessToken)
+}
+
+func (driver GoogleDrive) Preview(path string, account *model.Account) (interface{}, error) {
+	return nil, base.ErrNotSupport
+}
+
+func (driver GoogleDrive) MakeDir(path string, account *model.Account) error {
+	return base.ErrNotImplement
+}
+
+func (driver GoogleDrive) Move(src string, dst string, account *model.Account) error {
+	return base.ErrNotImplement
+}
+
+func (driver GoogleDrive) Copy(src string, dst string, account *model.Account) error {
+	return base.ErrNotImplement
+}
+
+func (driver GoogleDrive) Delete(path string, account *model.Account) error {
+	return base.ErrNotImplement
+}
+
+func (driver GoogleDrive) Upload(file *model.FileStream, account *model.Account) error {
+	return base.ErrNotImplement
+}
+
+var _ base.Driver = (*GoogleDrive)(nil)