feat(webhook): align chatwoot ingress routes

internal/handler/webhook/line_webhook.go

@@ -3,17 +3,18 @@ package webhook
 // LineWebhookHandler processes incoming LINE webhook HTTP requests via Gin.
 // Reference: Facebook webhook adapter pattern (facebook_webhook.go)
 //
-// URL pattern: /webhooks/line/:inbox_id
+// URL pattern: /webhooks/line/:line_channel_id
 // Method: POST (LINE Messaging API sends events as JSON)
 
 import (
 	"encoding/json"
+	"fmt"
 	"io"
 	"net/http"
-	"strconv"
 
 	linechannel "github.com/gochat/gochat/internal/channel/line"
 	"github.com/gochat/gochat/internal/model"
+	channelmodel "github.com/gochat/gochat/internal/model/channel"
 	applogger "github.com/gochat/gochat/pkg/logger"
 
 	"github.com/gin-gonic/gin"
@@ -40,18 +41,20 @@ func NewLineWebhookHandler(lineWebhook *linechannel.WebhookHandler, pipeline *li
 
 // HandleLineWebhook processes an incoming LINE webhook Gin request.
 func (h *LineWebhookHandler) HandleLineWebhook(c *gin.Context) {
-	inboxIDStr := c.Param("inbox_id")
-	inboxID, err := strconv.ParseUint(inboxIDStr, 10, 32)
-	if err != nil {
-		applogger.L().Warnf("LINE webhook: invalid inbox_id %s", inboxIDStr)
+	lineChannelID := c.Param("line_channel_id")
+	if lineChannelID == "" {
+		lineChannelID = c.Param("channel_id")
+	}
+	if lineChannelID == "" {
+		applogger.L().Warn("LINE webhook: missing line_channel_id in path")
 		c.JSON(http.StatusOK, gin.H{"status": "ignored"})
 		return
 	}
 
 	// Lookup inbox from database
-	inbox, err := h.lookupInbox(uint(inboxID))
+	inbox, err := h.lookupInboxByLineChannelID(lineChannelID)
 	if err != nil {
-		applogger.L().Warnf("LINE webhook: inbox lookup failed for id %d: %v", inboxID, err)
+		applogger.L().Warnf("LINE webhook: inbox lookup failed for channel_id %s: %v", lineChannelID, err)
 		c.JSON(http.StatusOK, gin.H{"status": "ignored"})
 		return
 	}
@@ -59,7 +62,7 @@ func (h *LineWebhookHandler) HandleLineWebhook(c *gin.Context) {
 	// Read request body
 	body, err := io.ReadAll(c.Request.Body)
 	if err != nil {
-		applogger.L().Errorf("LINE webhook: failed to read body for inbox %d: %v", inboxID, err)
+		applogger.L().Errorf("LINE webhook: failed to read body for inbox %d: %v", inbox.ID, err)
 		c.JSON(http.StatusOK, gin.H{"status": "ignored"})
 		return
 	}
@@ -75,7 +78,7 @@ func (h *LineWebhookHandler) HandleLineWebhook(c *gin.Context) {
 
 	if channelSecret != "" && signature != "" {
 		if !h.service.VerifySignature(channelSecret, string(body), signature) {
-			applogger.L().Warnf("LINE webhook: invalid signature for inbox=%d", inboxID)
+			applogger.L().Warnf("LINE webhook: invalid signature for inbox=%d", inbox.ID)
 			c.JSON(http.StatusUnauthorized, gin.H{"error": "invalid signature"})
 			return
 		}
@@ -84,7 +87,7 @@ func (h *LineWebhookHandler) HandleLineWebhook(c *gin.Context) {
 	// Parse webhook event
 	var webhookEvent linechannel.WebhookEvent
 	if err := json.Unmarshal(body, &webhookEvent); err != nil {
-		applogger.L().Errorf("LINE webhook: failed to parse JSON for inbox %d: %v", inboxID, err)
+		applogger.L().Errorf("LINE webhook: failed to parse JSON for inbox %d: %v", inbox.ID, err)
 		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid JSON"})
 		return
 	}
@@ -93,7 +96,7 @@ func (h *LineWebhookHandler) HandleLineWebhook(c *gin.Context) {
 	for _, event := range webhookEvent.Events {
 		incomingMsg, err := h.pipeline.ProcessEvent(c.Request.Context(), inbox, event)
 		if err != nil {
-			applogger.L().Errorf("LINE webhook: process event failed for inbox %d: %v", inboxID, err)
+			applogger.L().Errorf("LINE webhook: process event failed for inbox %d: %v", inbox.ID, err)
 			continue
 		}
 		if incomingMsg != nil {
@@ -119,6 +122,25 @@ func (h *LineWebhookHandler) lookupInbox(inboxID uint) (*model.Inbox, error) {
 	return &inbox, nil
 }
 
+// lookupInboxByLineChannelID fetches an Inbox through the LINE channel record.
+// Chatwoot exposes /webhooks/line/:line_channel_id and resolves the channel from that URL segment.
+func (h *LineWebhookHandler) lookupInboxByLineChannelID(lineChannelID string) (*model.Inbox, error) {
+	if h.db == nil {
+		return nil, fmt.Errorf("line webhook database is not configured")
+	}
+
+	var channel channelmodel.ChannelLINE
+	if err := h.db.Where("channel_id = ?", lineChannelID).First(&channel).Error; err != nil {
+		return nil, fmt.Errorf("line channel not found for channel_id=%s: %w", lineChannelID, err)
+	}
+
+	var inbox model.Inbox
+	if err := h.db.Where("id = ? AND channel_type = ?", channel.InboxID, "line").First(&inbox).Error; err != nil {
+		return nil, fmt.Errorf("line inbox not found for channel inbox_id=%d: %w", channel.InboxID, err)
+	}
+	return &inbox, nil
+}
+
 // parseChannelConfig parses the JSON-encoded ChannelConfig string into a map.
 func (h *LineWebhookHandler) parseChannelConfig(inbox *model.Inbox) map[string]interface{} {
 	if inbox.ChannelConfig == "" {
@@ -130,4 +152,4 @@ func (h *LineWebhookHandler) parseChannelConfig(inbox *model.Inbox) map[string]i
 		return map[string]interface{}{}
 	}
 	return config
-}
+}