Files
SaveAny-Bot/core/tasks/batchtfile/codec.go
T

107 lines
3.2 KiB
Go

package batchtfile
import (
"context"
"encoding/json"
"fmt"
"path/filepath"
"github.com/krau/SaveAny-Bot/config"
"github.com/krau/SaveAny-Bot/core"
"github.com/krau/SaveAny-Bot/pkg/enums/tasktype"
tfilepkg "github.com/krau/SaveAny-Bot/pkg/tfile"
"github.com/krau/SaveAny-Bot/storage"
)
type elementPayload struct {
ID string `json:"id"`
Storage string `json:"storage"`
Path string `json:"path"`
File tfilepkg.FilePayload `json:"file"`
SourceGroupKey string `json:"source_group_key"`
SourceCaption string `json:"source_caption"`
PreserveCaption bool `json:"preserve_caption"`
}
type taskPayload struct {
ID string `json:"id"`
Elements []elementPayload `json:"elements"`
ChatID int64 `json:"chat_id"`
MessageID int `json:"message_id"`
IgnoreErrors bool `json:"ignore_errors"`
}
type taskCodec struct{}
func init() {
core.RegisterTaskCodec(tasktype.TaskTypeTgfiles, taskCodec{})
}
func (taskCodec) Marshal(task core.Executable) ([]byte, error) {
t, ok := task.(*Task)
if !ok {
return nil, fmt.Errorf("unexpected task type %T", task)
}
p := taskPayload{
ID: t.ID,
IgnoreErrors: t.IgnoreErrors,
}
for _, elem := range t.elems {
filePayload, ok := tfilepkg.FilePayloadOf(elem.File)
if !ok {
return nil, fmt.Errorf("file %T is not serializable", elem.File)
}
p.Elements = append(p.Elements, elementPayload{
ID: elem.ID,
Storage: elem.Storage.Name(),
Path: elem.Path,
File: filePayload,
SourceGroupKey: elem.sourceGroupKey,
SourceCaption: elem.sourceCaption,
PreserveCaption: elem.preserveCaption,
})
}
if progress, ok := t.Progress.(*Progress); ok {
p.ChatID = progress.ChatID
p.MessageID = progress.MessageID
}
return json.Marshal(p)
}
func (taskCodec) Unmarshal(data []byte) (core.Executable, error) {
var p taskPayload
if err := json.Unmarshal(data, &p); err != nil {
return nil, fmt.Errorf("invalid task payload: %w", err)
}
dler := core.DownloaderClient()
if dler == nil {
return nil, fmt.Errorf("no downloader client available")
}
elems := make([]TaskElement, 0, len(p.Elements))
for _, ep := range p.Elements {
stor, err := storage.GetStorageByName(context.Background(), ep.Storage)
if err != nil {
return nil, fmt.Errorf("storage %q: %w", ep.Storage, err)
}
localPath, err := filepath.Abs(filepath.Join(config.C().Temp.BasePath, fmt.Sprintf("%s_%s", ep.ID, ep.File.Name)))
if err != nil {
return nil, fmt.Errorf("failed to build cache path: %w", err)
}
elems = append(elems, TaskElement{
ID: ep.ID,
Storage: stor,
Path: ep.Path,
File: tfilepkg.FileFromPayload(ep.File, dler),
localPath: localPath,
sourceGroupKey: ep.SourceGroupKey,
sourceCaption: ep.SourceCaption,
preserveCaption: ep.PreserveCaption,
})
}
var progress ProgressTracker
if p.ChatID != 0 {
progress = NewProgressTracker(p.MessageID, p.ChatID)
}
return NewBatchTGFileTask(p.ID, context.Background(), elems, progress, p.IgnoreErrors), nil
}