refactor: refactor task logic for better scalability (#76)

* refactor: a big refactor. wip

* refactor: port handle file

* refactor: place all handlers

* fix: task info nil pointer

* feat: enhance task progress tracking and context management

* feat: cancel task

* feat: stream mode

* feat: silent mode

* feat: dir cmd

* refactor: remove unused old file

* feat: rule cmd

* feat: handle silent mode

* feat: batch task

* fix: batch task progress and temp file cleanup

* refactor: update file creation and cleanup methods for better resource management

* feat: add save command with silent mode handling

* feat: message link

* feat: update message prompts to include file count in storage selection

* feat: slient save links

* refactor: reduce dup code

* feat: rule type

* feat: chose dir

* feat: refactor file handling and storage rules, improve error handling and logging

* feat: rule mode

* feat: telegraph pics

* fix: tphpics nil pointer and inaccurate dirpath

* feat: silent save telegraph

* feat: add suffix to avoid file overwrite

* feat: new storage telegram

* chore: tidy go mod

core/tftask/stream.go

@@ -0,0 +1,40 @@
+package tftask
+
+import (
+	"context"
+	"fmt"
+	"io"
+
+	"github.com/charmbracelet/log"
+	"github.com/krau/SaveAny-Bot/common/tdler"
+	"golang.org/x/sync/errgroup"
+)
+
+func executeStream(ctx context.Context, task *TGFileTask) error {
+	logger := log.FromContext(ctx).WithPrefix(fmt.Sprintf("file[%s]", task.File.Name()))
+
+	pr, pw := io.Pipe()
+	defer pr.Close()
+	errg, uploadCtx := errgroup.WithContext(ctx)
+	errg.Go(func() error {
+		return task.Storage.Save(uploadCtx, pr, task.Path)
+	})
+	wr := newWriter(ctx, pw, task.Progress, task)
+	errg.Go(func() error {
+		logger.Info("Starting file download in stream mode")
+		_, err := tdler.NewDownloader(task.client, task.File).Stream(uploadCtx, wr)
+		if closeErr := pw.CloseWithError(err); closeErr != nil {
+			logger.Errorf("Failed to close pipe writer: %v", closeErr)
+		}
+		return err
+	})
+	var err error
+	defer func() {
+		task.Progress.OnDone(ctx, task, err)
+	}()
+	if err = errg.Wait(); err != nil {
+		return err
+	}
+	logger.Info("File downloaded successfully in stream mode")
+	return nil
+}