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

2026-09-04 23:26:39 +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 +1,92 @@
+package transfer
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"github.com/krau/SaveAny-Bot/core"
+	"github.com/krau/SaveAny-Bot/pkg/enums/tasktype"
+	"github.com/krau/SaveAny-Bot/pkg/storagetypes"
+	"github.com/krau/SaveAny-Bot/storage"
+)
+
+type elementPayload struct {
+	ID            string                `json:"id"`
+	SourceStorage string                `json:"source_storage"`
+	SourcePath    string                `json:"source_path"`
+	FileInfo      storagetypes.FileInfo `json:"file_info"`
+	TargetStorage string                `json:"target_storage"`
+	TargetPath    string                `json:"target_path"`
+}
+
+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.TaskTypeTransfer, 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 {
+		p.Elements = append(p.Elements, elementPayload{
+			ID:            elem.ID,
+			SourceStorage: elem.SourceStorage.Name(),
+			SourcePath:    elem.SourcePath,
+			FileInfo:      elem.FileInfo,
+			TargetStorage: elem.TargetStorage.Name(),
+			TargetPath:    elem.TargetPath,
+		})
+	}
+	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)
+	}
+	elems := make([]TaskElement, 0, len(p.Elements))
+	for _, ep := range p.Elements {
+		source, err := storage.GetStorageByName(context.Background(), ep.SourceStorage)
+		if err != nil {
+			return nil, fmt.Errorf("source storage %q: %w", ep.SourceStorage, err)
+		}
+		target, err := storage.GetStorageByName(context.Background(), ep.TargetStorage)
+		if err != nil {
+			return nil, fmt.Errorf("target storage %q: %w", ep.TargetStorage, err)
+		}
+		elems = append(elems, TaskElement{
+			ID:            ep.ID,
+			SourceStorage: source,
+			SourcePath:    ep.SourcePath,
+			FileInfo:      ep.FileInfo,
+			TargetStorage: target,
+			TargetPath:    ep.TargetPath,
+		})
+	}
+	var progress ProgressTracker
+	if p.ChatID != 0 {
+		progress = NewProgressTracker(p.MessageID, p.ChatID)
+	}
+	return NewTransferTask(p.ID, context.Background(), elems, progress, p.IgnoreErrors), nil
+}