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package drive
import (
"fmt"
"io"
"text/tabwriter"
"golang.org/x/net/context"
"google.golang.org/api/drive/v3"
"google.golang.org/api/googleapi"
)
type ListFilesArgs struct {
Out io.Writer
MaxFiles int64
NameWidth int64
Query string
SortOrder string
SkipHeader bool
SizeInBytes bool
}
func (self *Drive) List(args ListFilesArgs) (err error) {
listArgs := listAllFilesArgs{
query: args.Query,
fields: []googleapi.Field{"nextPageToken", "files(id,name,md5Checksum,mimeType,size,createdTime)"},
sortOrder: args.SortOrder,
maxFiles: args.MaxFiles,
}
files, err := self.listAllFiles(listArgs)
if err != nil {
return fmt.Errorf("Failed to list files: %s", err)
}
PrintFileList(PrintFileListArgs{
Out: args.Out,
Files: files,
NameWidth: int(args.NameWidth),
SkipHeader: args.SkipHeader,
SizeInBytes: args.SizeInBytes,
})
return
}
type listAllFilesArgs struct {
query string
fields []googleapi.Field
sortOrder string
maxFiles int64
}
func (self *Drive) listAllFiles(args listAllFilesArgs) ([]*drive.File, error) {
var files []*drive.File
var pageSize int64
if args.maxFiles > 0 && args.maxFiles < 1000 {
pageSize = args.maxFiles
} else {
pageSize = 1000
}
controlledStop := fmt.Errorf("Controlled stop")
err := self.service.Files.List().Q(args.query).Fields(args.fields...).OrderBy(args.sortOrder).PageSize(pageSize).Pages(context.TODO(), func(fl *drive.FileList) error {
files = append(files, fl.Files...)
// Stop when we have all the files we need
if args.maxFiles > 0 && len(files) >= int(args.maxFiles) {
return controlledStop
}
return nil
})
if err != nil && err != controlledStop {
return nil, err
}
if args.maxFiles > 0 {
n := min(len(files), int(args.maxFiles))
return files[:n], nil
}
return files, nil
}
type PrintFileListArgs struct {
Out io.Writer
Files []*drive.File
NameWidth int
SkipHeader bool
SizeInBytes bool
}
func PrintFileList(args PrintFileListArgs) {
w := new(tabwriter.Writer)
w.Init(args.Out, 0, 0, 3, ' ', 0)
if !args.SkipHeader {
fmt.Fprintln(w, "Id\tName\tType\tSize\tCreated")
}
for _, f := range args.Files {
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\n",
f.Id,
truncateString(f.Name, args.NameWidth),
filetype(f),
formatSize(f.Size, args.SizeInBytes),
formatDatetime(f.CreatedTime),
)
}
w.Flush()
}
func filetype(f *drive.File) string {
if isDir(f) {
return "dir"
} else if isBinary(f) {
return "bin"
}
return "doc"
}
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