fix: enhance handleBatchSave to support user context and improve message retrieval

.github/ISSUE_TEMPLATE/bug.yml

@@ -5,6 +5,12 @@ labels:
 assignees:
   - krau
 body:
+  - type: markdown
+    attributes:
+      value: |
+        # Please Search Before Submitting / 提交前请搜索
+        Please make sure to search existing issues before submitting a new bug report.  
+        提交新的 Bug 报告前请务必搜索已有的 issue，避免重复
   - type: textarea
     attributes:
       label: "👾 Description"

.github/ISSUE_TEMPLATE/feature.yml

@@ -8,7 +8,69 @@ body:
   - type: markdown
     attributes:
       value: |
-        # Please describe the feature you want in detail
+        Please describe the feature you want in detail.
+        请详细描述你想要的功能。
+
+        ---
+
+        ## ⚠️ IMPORTANT NOTICE / 说明
+
+        Save Any Bot supports multiple storage backends, **including Telegram**.  
+        However, **all backends are treated equally**, keep this in mind when submitting feature requests.
+
+        Save Any Bot 支持多种存储后端，**包括 Telegram**。  
+        但**所有后端在设计上是平等的**，请在提出功能请求前务必理解这一点。
+
+        ### ❌ Out of scope requests / 不在项目范围内的请求
+        The following requests are **out of scope** and will be closed without discussion:
+
+        以下请求**不属于本项目设计范围**，将被直接关闭，不再讨论：
+
+        - Adding **Telegram-specific behaviors or exceptions**  
+          添加 **仅针对 Telegram 的特殊行为或例外逻辑**
+        - Treating Telegram as anything other than a **generic file storage backend**  
+          将 Telegram 视为非“通用文件存储后端”的特殊存在
+        - Saving or syncing **non-file content** (text messages, chat history, etc.)  
+          保存或同步 **非文件内容**（文本消息、聊天记录等）
+        - Preserving or reconstructing original messages (e.g. 1:1 forwarding)  
+          保留或还原原始消息形态（例如 1:1 转发）
+        - Perform special reprocessing on files to adapt to specific storage backends  
+          (e.g. splitting, re-encoding, transforming, etc.)  
+          为适配特定存储后端而对文件进行特殊处理  
+          （如分割、转码、重编码、转换格式等）
+        - Any request that requires different logic *only because the backend is Telegram*  
+          任何**仅因后端是 Telegram 而需要不同逻辑**的请求
+
+        ### ❌ Abuse-leaning or high-risk requests / 滥用倾向的请求
+        Requests that may **enable or encourage** the following will NOT be accepted:
+
+        可能**促成或鼓励**以下行为的请求将不会被接受：
+
+        - Violating Telegram Terms of Service  
+          违反 Telegram 服务条款
+        - Building traffic, mirror, or profit-oriented channels using third-party content  
+          利用第三方内容构建引流、镜像或牟利用途的频道
+
+        ### ⚖️ Design principle / 设计原则
+        Save Any Bot follows a **backend-agnostic design**:
+
+        Save Any Bot 遵循 **后端无关（backend-agnostic）** 的设计原则：
+
+        - If a feature cannot be implemented **uniformly across all backends**, it will not be added.  
+          如果某个功能无法在 **所有后端** 中统一实现，则不会被添加。
+        - No backend-specific hacks or special cases will be introduced.  
+          不会引入任何后端特有的 hack 或特殊处理逻辑。
+
+        ---
+
+        If your request falls into any of the categories above, please do not open an issue.  
+        Such issues will be closed.
+
+        如果你的请求符合以上任一情况，请不要提交 issue，  
+        相关 issue 将被直接关闭。
+
+        Thank you for respecting the scope and design principles of this project.
+        感谢你的理解与支持。
   - type: textarea
     attributes:
       label: "⭐️ Feature description"
@@ -30,4 +92,4 @@ body:
   - type: markdown
     attributes:
       value: |
-        ## Thank you for contributing to the project :slightly_smiling_face:
+        ## Thank you for contributing to the project :slightly_smiling_face:

client/bot/handlers/save.go

@@ -7,11 +7,13 @@ import (
 	"github.com/celestix/gotgproto/dispatcher"
 	"github.com/celestix/gotgproto/ext"
 	"github.com/charmbracelet/log"
+	"github.com/duke-git/lancet/v2/validator"
 	"github.com/gotd/td/tg"
 	"github.com/krau/SaveAny-Bot/client/bot/handlers/utils/dirutil"
 	"github.com/krau/SaveAny-Bot/client/bot/handlers/utils/mediautil"
 	"github.com/krau/SaveAny-Bot/client/bot/handlers/utils/msgelem"
 	"github.com/krau/SaveAny-Bot/client/bot/handlers/utils/shortcut"
+	"github.com/krau/SaveAny-Bot/client/user"
 	"github.com/krau/SaveAny-Bot/common/i18n"
 	"github.com/krau/SaveAny-Bot/common/i18n/i18nk"
 	"github.com/krau/SaveAny-Bot/common/utils/strutil"
@@ -105,7 +107,12 @@ func handleBatchSave(ctx *ext.Context, update *ext.Update, args []string) error
 		ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCommonErrorInvalidMsgIdRange, map[string]any{"Error": err.Error()})), nil)
 		return dispatcher.EndGroups
 	}
-	chatID, err := tgutil.ParseChatID(ctx, chatArg)
+	tctx := ctx
+	uctx := user.GetCtx()
+	if uctx != nil && validator.IsIntStr(chatArg) {
+		tctx = uctx
+	}
+	chatID, err := tgutil.ParseChatID(tctx, chatArg)
 	if err != nil {
 		ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCommonErrorInvalidIdOrUsername, map[string]any{"Error": err.Error()})), nil)
 		return dispatcher.EndGroups
@@ -118,7 +125,7 @@ func handleBatchSave(ctx *ext.Context, update *ext.Update, args []string) error
 	}
 
 	// [TODO]: generator istead of get all messages
-	msgs, err := tgutil.GetMessagesRange(ctx, chatID, int(startID), int(endID))
+	msgs, err := tgutil.GetMessagesRange(tctx, chatID, int(startID), int(endID))
 	if err != nil {
 		ctx.Reply(update, ext.ReplyTextString(i18n.T(i18nk.BotMsgCommonErrorGetMessagesFailed, map[string]any{"Error": err.Error()})), nil)
 		return dispatcher.EndGroups
@@ -141,7 +148,7 @@ func handleBatchSave(ctx *ext.Context, update *ext.Update, args []string) error
 		if !supported {
 			continue
 		}
-		file, err := tfile.FromMediaMessage(media, ctx.Raw, msg, tfile.WithNameIfEmpty(tgutil.GenFileNameFromMessage(*msg)))
+		file, err := tfile.FromMediaMessage(media, tctx.Raw, msg, tfile.WithNameIfEmpty(tgutil.GenFileNameFromMessage(*msg)))
 		if err != nil {
 			log.FromContext(ctx).Errorf("Failed to get file from message: %s", err)
 			continue
@@ -172,14 +179,14 @@ func handleBatchSave(ctx *ext.Context, update *ext.Update, args []string) error
 		if err != nil {
 			log.FromContext(ctx).Errorf("Failed to build storage selection keyboard: %s", err)
 			ctx.EditMessage(update.EffectiveChat().GetID(), &tg.MessagesEditMessageRequest{
-					ID: replied.ID,
-					Message: i18n.T(i18nk.BotMsgCommonErrorBuildStorageSelectKeyboardFailed, map[string]any{"Error": err.Error()}),
+				ID:      replied.ID,
+				Message: i18n.T(i18nk.BotMsgCommonErrorBuildStorageSelectKeyboardFailed, map[string]any{"Error": err.Error()}),
 			})
 			return dispatcher.EndGroups
 		}
 		ctx.EditMessage(update.EffectiveChat().GetID(), &tg.MessagesEditMessageRequest{
-				ID: replied.ID,
-				Message: i18n.T(i18nk.BotMsgCommonInfoFoundFilesSelectStorage, map[string]any{"Count": len(files)}),
+			ID:          replied.ID,
+			Message:     i18n.T(i18nk.BotMsgCommonInfoFoundFilesSelectStorage, map[string]any{"Count": len(files)}),
 			ReplyMarkup: markup,
 		})
 		return dispatcher.EndGroups

common/utils/tgutil/message.go

@@ -113,29 +113,28 @@ func InputMessageClassSliceFromInt(ids []int) []tg.InputMessageClass {
 	return result
 }
 
-func GetMessagesRange(ctx *ext.Context, chatID int64, minId, maxId int) ([]*tg.Message, error) {
-	if msg, err := getMessagesRange(ctx, chatID, minId, maxId); err == nil {
-		return msg, nil
+func GetMessagesRange(ctx *ext.Context, chatID int64, minId, maxId int) (msg []*tg.Message, err error) {
+	if msg, err = getMessagesRange(ctx, chatID, minId, maxId); err == nil {
+		return
 	}
 	in := constant.TDLibPeerID(chatID)
 	plain := in.ToPlain()
-
 	var channel constant.TDLibPeerID
 	channel.Channel(plain)
-	if msg, err := getMessagesRange(ctx, int64(channel), minId, maxId); err == nil {
-		return msg, nil
+	if msg, err = getMessagesRange(ctx, int64(channel), minId, maxId); err == nil {
+		return
 	}
 	var userID constant.TDLibPeerID
 	userID.User(plain)
-	if msg, err := getMessagesRange(ctx, int64(userID), minId, maxId); err == nil {
-		return msg, nil
+	if msg, err = getMessagesRange(ctx, int64(userID), minId, maxId); err == nil {
+		return
 	}
 	var chat constant.TDLibPeerID
 	chat.Chat(plain)
-	if msg, err := getMessagesRange(ctx, int64(chat), minId, maxId); err == nil {
-		return msg, nil
+	if msg, err = getMessagesRange(ctx, int64(chat), minId, maxId); err == nil {
+		return
 	}
-	return nil, fmt.Errorf("failed to get messages range for chatID %d", chatID)
+	return nil, fmt.Errorf("failed to get messages range for chat %d: %w", chatID, err)
 }
 
 func getMessagesRange(ctx *ext.Context, chatID int64, minId, maxId int) ([]*tg.Message, error) {