feat: add import command and batch import functionality

- Implemented the `/import` command to allow users to import files from storage to Telegram.
- Added support for listing files in storage and filtering based on regex patterns.
- Created a batch import task to handle multiple file uploads concurrently.
- Introduced progress tracking for batch imports, providing real-time updates to users.
- Enhanced storage interfaces to support file listing and reading capabilities.
- Updated localization files for the new import command and its usage instructions.
- Added utility functions for file size formatting and speed calculation.
- Refactored Telegram storage handling to support reading from non-seekable streams.

common/i18n/i18nk/keys.go

@@ -21,6 +21,7 @@ const (
 	BotMsgCmdDl                                           Key = "bot.msg.cmd.dl"
 	BotMsgCmdFnametmpl                                    Key = "bot.msg.cmd.fnametmpl"
 	BotMsgCmdHelp                                         Key = "bot.msg.cmd.help"
+	BotMsgCmdImport                                       Key = "bot.msg.cmd.import"
 	BotMsgCmdLswatch                                      Key = "bot.msg.cmd.lswatch"
 	BotMsgCmdParser                                       Key = "bot.msg.cmd.parser"
 	BotMsgCmdRule                                         Key = "bot.msg.cmd.rule"

common/i18n/locale/en.yaml

@@ -29,6 +29,7 @@ bot:
       /silent - Toggle silent mode
       /storage - Set default storage
       /save [custom filename] - Save file
+      /import <storage_name> <dir_path> [channel_id] [filter] - Import files from storage to Telegram
       /dir - Manage storage directories
       /rule - Manage rules
       /config - Modify configuration
@@ -52,6 +53,7 @@ bot:
       dl: "Download files from given links"
       aria2dl: "Download files using Aria2"
       ytdlp: "Download video/audio using yt-dlp"
+      import: "Import files from storage to Telegram"
       task: "Manage task queue"
       cancel: "Cancel task"
       watch: "Watch chats (UserBot)"

common/i18n/locale/zh-Hans.yaml

@@ -30,6 +30,7 @@ bot:
       /storage - 设置默认存储位置
       /save [自定义文件名] - 保存文件
       /dl <链接1> <链接2> ... - 下载给定链接的文件
+      /import <存储名> <目录路径> [频道ID] [过滤器] - 从存储端导入文件到 Telegram
       /dir - 管理存储目录
       /rule - 管理规则
       /config - 修改配置
@@ -53,6 +54,7 @@ bot:
       dl: "下载给定链接的文件"
       aria2dl: "使用 Aria2 下载给定链接的文件"
       ytdlp: "使用 yt-dlp 下载视频/音频"
+      import: "从存储端导入文件到 Telegram"
       task: "管理任务队列"
       cancel: "取消任务"
       watch: "监听聊天(UserBot)"

common/utils/dlutil/dl.go

@@ -1,6 +1,9 @@
 package dlutil
 
-import "time"
+import (
+	"fmt"
+	"time"
+)
 
 var threadsLevels = []struct {
 	threads int
@@ -31,3 +34,23 @@ func GetSpeed(downloaded int64, startTime time.Time) float64 {
 	}
 	return float64(downloaded) / elapsed
 }
+
+// FormatSize formats a byte size as a human-readable string
+func FormatSize(bytes int64) string {
+	const (
+		KB = 1024
+		MB = KB * 1024
+		GB = MB * 1024
+	)
+	
+	switch {
+	case bytes >= GB:
+		return fmt.Sprintf("%.2f GB", float64(bytes)/float64(GB))
+	case bytes >= MB:
+		return fmt.Sprintf("%.2f MB", float64(bytes)/float64(MB))
+	case bytes >= KB:
+		return fmt.Sprintf("%.2f KB", float64(bytes)/float64(KB))
+	default:
+		return fmt.Sprintf("%d B", bytes)
+	}
+}