feat(core): persist tasks and recover them after restart

2026-09-04 15:16:37 +08:00 · 2026-08-25 15:05:55 +08:00
parent 54dc4caafe
commit 991f454096
14 changed files with 938 additions and 68 deletions
@@ -0,0 +1,106 @@
+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
+}