address PR comments.

Signed-off-by: Kai Xia <kaix+github@fastmail.com>

pkg/channels/line/line.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"fmt"
 	"net/http"
-	"reflect"
 	"strings"
 	"sync"
 	"time"
@@ -78,7 +77,7 @@ func (c *LINEChannel) Start(ctx context.Context) error {
 	c.ctx, c.cancel = context.WithCancel(ctx)
 
 	// Fetch bot profile to get bot's userId for mention detection
-	info, err := c.client.GetBotInfo()
+	info, err := c.client.WithContext(ctx).GetBotInfo()
 	if err != nil {
 		logger.WarnCF("line", "Failed to fetch bot info (mention detection disabled)", map[string]any{
 			"error": err.Error(),
@@ -178,9 +177,6 @@ func (c *LINEChannel) processEvent(event webhook.EventInterface) {
 	var mediaPaths []string
 	var messageID string
 	var isMentioned bool
-	if f := reflect.Indirect(reflect.ValueOf(msgEvent.Message)).FieldByName("Id"); f.IsValid() {
-		messageID = f.String()
-	}
 
 	// Helper to register a local file with the media store
 	storeMedia := func(localPath, filename, scope string) string {
@@ -198,6 +194,7 @@ func (c *LINEChannel) processEvent(event webhook.EventInterface) {
 
 	switch msg := msgEvent.Message.(type) {
 	case webhook.TextMessageContent:
+		messageID = msg.Id
 		content = msg.Text
 		isMentioned = c.isBotMentioned(msg)
 		if msg.QuoteToken != "" {
@@ -207,29 +204,31 @@ func (c *LINEChannel) processEvent(event webhook.EventInterface) {
 			content = c.stripBotMention(content, msg)
 		}
 	case webhook.ImageMessageContent:
-		localPath := c.downloadContent(messageID, "image.jpg")
+		messageID = msg.Id
-		if localPath != "" {
+		if localPath := c.downloadContent(msg.Id, "image.jpg"); localPath != "" {
 			scope := channels.BuildMediaScope("line", chatID, msg.Id)
 			mediaPaths = append(mediaPaths, storeMedia(localPath, "image.jpg", scope))
 			content = "[image]"
 		}
 	case webhook.AudioMessageContent:
-		localPath := c.downloadContent(messageID, "audio.m4a")
+		messageID = msg.Id
-		if localPath != "" {
+		if localPath := c.downloadContent(msg.Id, "audio.m4a"); localPath != "" {
 			scope := channels.BuildMediaScope("line", chatID, msg.Id)
 			mediaPaths = append(mediaPaths, storeMedia(localPath, "audio.m4a", scope))
 			content = "[audio]"
 		}
 	case webhook.VideoMessageContent:
-		localPath := c.downloadContent(messageID, "video.mp4")
+		messageID = msg.Id
-		if localPath != "" {
+		if localPath := c.downloadContent(msg.Id, "video.mp4"); localPath != "" {
 			scope := channels.BuildMediaScope("line", chatID, msg.Id)
 			mediaPaths = append(mediaPaths, storeMedia(localPath, "video.mp4", scope))
 			content = "[video]"
 		}
 	case webhook.FileMessageContent:
+		messageID = msg.Id
 		content = "[file]"
 	case webhook.StickerMessageContent:
+		messageID = msg.Id
 		content = "[sticker]"
 	default:
 		logger.WarnCF("line", "Ignoring unsupported message type", map[string]any{
@@ -390,6 +389,9 @@ func (c *LINEChannel) resolveSource(source webhook.SourceInterface) (senderID, c
 	case webhook.UserSource:
 		return src.UserId, src.UserId, "user"
 	default:
+		logger.WarnCF("line", "Unknown source type", map[string]any{
+			"type": fmt.Sprintf("%T", source),
+		})
 		return "", "", "unknown"
 	}
 }
@@ -416,7 +418,7 @@ func (c *LINEChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
 	if entry, ok := c.replyTokens.LoadAndDelete(msg.ChatID); ok {
 		tokenEntry := entry.(replyTokenEntry)
 		if time.Since(tokenEntry.timestamp) < lineReplyTokenMaxAge {
-			_, err := c.client.ReplyMessage(&messaging_api.ReplyMessageRequest{
+			_, err := c.client.WithContext(ctx).ReplyMessage(&messaging_api.ReplyMessageRequest{
 				ReplyToken: tokenEntry.token,
 				Messages:   []messaging_api.MessageInterface{&textMsg},
 			})
@@ -432,7 +434,7 @@ func (c *LINEChannel) Send(ctx context.Context, msg bus.OutboundMessage) error {
 	}
 
 	// Fall back to Push API
-	_, err := c.client.PushMessage(&messaging_api.PushMessageRequest{
+	_, err := c.client.WithContext(ctx).PushMessage(&messaging_api.PushMessageRequest{
 		To:       msg.ChatID,
 		Messages: []messaging_api.MessageInterface{&textMsg},
 	}, "")
@@ -462,7 +464,7 @@ func (c *LINEChannel) SendMedia(ctx context.Context, msg bus.OutboundMediaMessag
 		}
 
 		textMsg := messaging_api.TextMessage{Text: caption}
-		if _, err := c.client.PushMessage(&messaging_api.PushMessageRequest{
+		if _, err := c.client.WithContext(ctx).PushMessage(&messaging_api.PushMessageRequest{
 			To:       msg.ChatID,
 			Messages: []messaging_api.MessageInterface{&textMsg},
 		}, ""); err != nil {
@@ -520,7 +522,7 @@ func (c *LINEChannel) StartTyping(ctx context.Context, chatID string) (func(), e
 
 // sendLoading sends a loading animation indicator to the chat.
 func (c *LINEChannel) sendLoading(ctx context.Context, chatID string) error {
-	_, err := c.client.ShowLoadingAnimation(&messaging_api.ShowLoadingAnimationRequest{
+	_, err := c.client.WithContext(ctx).ShowLoadingAnimation(&messaging_api.ShowLoadingAnimationRequest{
 		ChatId:         chatID,
 		LoadingSeconds: 60,
 	})