Reorganize repo: backend/, deploy/, docs/ layout + AGENTS.md

Restructure the monorepo into clear top-level directories: - backend/: Go module root (cmd, internal, pkg, configs, migrations, docs/swagger, scripts, tests, go.mod, Makefile, .air.toml) - deploy/: Docker (Dockerfile, docker-compose*), quickstart, fluentd - docs/: project documentation + reports/ (moved from repo root) - AGENTS.md: new AI coding-agent guide at repo root Update all references to the new layout: - Dockerfile: COPY backend/go.mod, COPY backend/ (context = repo root) - docker-compose files: context ../.., dockerfile deploy/docker/Dockerfile, env_file ../../.env, volume mounts ../../backend:/app - deploy/quickstart/compose.yaml: dockerfile deploy/docker/Dockerfile - CI: working-directory: backend for go commands, file deploy/docker/Dockerfile, coverage path backend/coverage.out, health_check backend/scripts/ - backend/Makefile: docker target uses -f ../deploy/docker/Dockerfile ../ - README: architecture tree, quickstart, config paths updated Move root stray scripts (rename_models.*, run_m11_tests.sh, verify_build.sh, gorm_bool_main.go) to backend/scripts/legacy/. All moves via git mv to preserve history. Build, vet, SQLite tests, and docker compose config verified.
2026-07-07 14:44:12 +08:00
parent d4ef996f49
commit aeddedf2a3
1348 changed files with 176 additions and 57 deletions
@@ -0,0 +1,361 @@
+package v1
+
+// FacebookChannelHandler handles Facebook channel-specific configuration CRUD and OAuth flow.
+// Reference: Chatwoot app/controllers/api/v1/accounts/channels/facebook_pages_controller.rb
+//
+// Chatwoot's FacebookPagesController provides:
+//   - create: authorize FB page → create inbox (via OmniAuth callback or direct page_access_token)
+//   - destroy: remove FB page channel + unsubscribe webhook
+//   - reauthorize: refresh expired page access tokens
+//
+// gochat maps these to:
+//   - POST   /api/v1/accounts/:id/facebook_pages           → create FB inbox
+//   - DELETE /api/v1/accounts/:id/facebook_pages/:page_id  → destroy FB inbox
+//   - POST   /api/v1/accounts/:id/facebook_pages/reauthorize → refresh token
+//   - GET    /api/v1/accounts/:id/facebook_pages/authorization → OAuth authorize URL
+
+import (
+	"net/http"
+	"strconv"
+
+	"github.com/gin-gonic/gin"
+
+	facebookchannel "github.com/gochat/gochat/internal/channel/facebook"
+	"github.com/gochat/gochat/internal/service"
+	applogger "github.com/gochat/gochat/pkg/logger"
+)
+
+// FacebookChannelHandler handles Facebook Messenger channel management.
+type FacebookChannelHandler struct {
+	fbService   *facebookchannel.Service
+	inboxSvc    *service.InboxService
+	fbProvider  *facebookchannel.FacebookProvider
+}
+
+// NewFacebookChannelHandler creates a new Facebook channel handler.
+func NewFacebookChannelHandler(
+	fbService *facebookchannel.Service,
+	inboxSvc *service.InboxService,
+	fbProvider *facebookchannel.FacebookProvider,
+) *FacebookChannelHandler {
+	return &FacebookChannelHandler{
+		fbService:  fbService,
+		inboxSvc:   inboxSvc,
+		fbProvider: fbProvider,
+	}
+}
+
+// === OAuth Authorization ===
+
+// FacebookAuthorizationRequest is the DTO for initiating FB OAuth flow.
+// Reference: Chatwoot facebook_pages_controller#authorization → redirects to FB login
+type FacebookAuthorizationRequest struct {
+	RedirectURL string `json:"redirect_url" validate:"required,url"`
+}
+
+// Authorization generates a Facebook OAuth authorize URL.
+// The user visits this URL, grants permissions, and Facebook redirects back with a code.
+// The callback endpoint then exchanges the code for a long-lived token.
+//
+// GET /api/v1/accounts/:id/facebook_pages/authorization
+func (h *FacebookChannelHandler) Authorization(c *gin.Context) {
+	accountIDStr := c.Param("id")
+	accountID, err := strconv.ParseUint(accountIDStr, 10, 64)
+	if err != nil {
+		applogger.L().Errorf("Invalid account_id: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid account_id"})
+		return
+	}
+
+	var req FacebookAuthorizationRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		// Also accept query parameter for redirect_url (convenience for browser-initiated flows)
+		redirectURL := c.Query("redirect_url")
+		if redirectURL == "" {
+			applogger.L().Errorf("Failed to bind authorization request: %v", err)
+			c.JSON(http.StatusBadRequest, gin.H{"error": "redirect_url is required"})
+			return
+		}
+		req.RedirectURL = redirectURL
+	}
+
+	authURL, err := h.fbProvider.BuildAuthURL(c.Request.Context(), uint(accountID), req.RedirectURL)
+	if err != nil {
+		applogger.L().Errorf("Failed to build Facebook auth URL: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to generate authorization URL"})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"authorization_url": authURL,
+		"account_id":        accountID,
+	})
+}
+
+// OAuthCallbackRequest is the DTO for the OAuth callback after FB redirects back.
+type OAuthCallbackRequest struct {
+	Code        string `json:"code" validate:"required"`
+	RedirectURL string `json:"redirect_url" validate:"required,url"`
+}
+
+// OAuthCallback exchanges the Facebook OAuth code for a long-lived access token
+// and returns available pages for inbox creation.
+// After the user grants permissions on Facebook, FB redirects to redirect_url with a code param.
+// The frontend then calls this endpoint with the code to complete the flow.
+//
+// POST /api/v1/accounts/:id/facebook_pages/oauth_callback
+func (h *FacebookChannelHandler) OAuthCallback(c *gin.Context) {
+	accountIDStr := c.Param("id")
+	accountID, err := strconv.ParseUint(accountIDStr, 10, 64)
+	if err != nil {
+		applogger.L().Errorf("Invalid account_id: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid account_id"})
+		return
+	}
+
+	var req OAuthCallbackRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		applogger.L().Errorf("Failed to bind OAuth callback request: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "code and redirect_url are required"})
+		return
+	}
+
+	tokenResult, err := h.fbProvider.ExchangeToken(c.Request.Context(), req.Code, req.RedirectURL)
+	if err != nil {
+		applogger.L().Errorf("Facebook token exchange failed: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "token exchange failed", "details": err.Error()})
+		return
+	}
+
+	// With the user access token, fetch available pages
+	// Reference: FB Graph API /me/accounts?fields=id,name,access_token
+	pages, pagesErr := h.fbService.ListUserPages(c.Request.Context(), tokenResult.AccessToken)
+	if pagesErr != nil {
+		applogger.L().Warnf("Failed to list user pages after token exchange: %v", pagesErr)
+		// Still return the token — user can create inbox manually with a page_access_token
+		c.JSON(http.StatusOK, gin.H{
+			"access_token": tokenResult.AccessToken,
+			"expires_at":   tokenResult.ExpiresAt,
+			"pages":        []gin.H{},
+			"message":      "token obtained but page listing failed; provide page_access_token manually",
+		})
+		return
+	}
+
+	pageList := make([]gin.H, 0, len(pages))
+	for _, p := range pages {
+		pageList = append(pageList, gin.H{
+			"page_id":   p.ID,
+			"page_name": p.Name,
+			"access_token": p.AccessToken,
+		})
+	}
+
+	c.JSON(http.StatusOK, gin.H{
+		"access_token": tokenResult.AccessToken,
+		"expires_at":   tokenResult.ExpiresAt,
+		"pages":        pageList,
+	})
+}
+
+// === Facebook Pages CRUD ===
+
+// CreateFacebookPageRequest is the DTO for creating a Facebook Messenger inbox.
+// Reference: Chatwoot FacebookPagesController#create
+type CreateFacebookPageRequest struct {
+	Name              string `json:"name" validate:"required,min=2"`
+	PageID            string `json:"page_id" validate:"required"`
+	PageAccessToken   string `json:"page_access_token" validate:"required"`
+	WebhookVerifyToken string `json:"webhook_verify_token,omitempty"` // auto-generated if empty
+	EnableAutoAssignment bool `json:"enable_auto_assignment,omitempty"`
+}
+
+// CreateFacebookPage creates a new Facebook Messenger inbox for a Facebook Page.
+// Flow: validate page_access_token → create ChannelFacebook → setup webhook → create Inbox
+//
+// POST /api/v1/accounts/:id/facebook_pages
+func (h *FacebookChannelHandler) CreateFacebookPage(c *gin.Context) {
+	accountIDStr := c.Param("id")
+	accountID, err := strconv.ParseUint(accountIDStr, 10, 64)
+	if err != nil {
+		applogger.L().Errorf("Invalid account_id: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid account_id"})
+		return
+	}
+
+	var req CreateFacebookPageRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		applogger.L().Errorf("Failed to bind create facebook page request: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	// Auto-generate webhook verify token if not provided
+	verifyToken := req.WebhookVerifyToken
+	if verifyToken == "" {
+		verifyToken = generateFBVerifyToken()
+	}
+
+	// Step 1: Create ChannelFacebook via service
+	ctx := c.Request.Context()
+	ch, err := h.fbService.CreateFacebookChannel(ctx, uint(accountID), req.PageID, req.PageAccessToken, verifyToken)
+	if err != nil {
+		applogger.L().Errorf("Failed to create Facebook channel: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create Facebook channel", "details": err.Error()})
+		return
+	}
+
+	// Step 2: Create Inbox that wraps this channel
+	fbConfig := gin.H{
+		"page_access_token": ch.PageAccessToken,
+		"page_id":           ch.PageID,
+		"page_name":         ch.PageName,
+		"verify_token":      ch.WebhookVerifyToken,
+		"app_id":            ch.AppID,
+	}
+	configJSON, marshalErr := json.Marshal(fbConfig)
+	if marshalErr != nil {
+		applogger.L().Errorf("Failed to marshal FB channel config: %v", marshalErr)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "internal error"})
+		return
+	}
+
+	inbox := &model.Inbox{
+		AccountID:            uint(accountID),
+		Name:                 req.Name,
+		ChannelType:          "facebook",
+		ChannelID:            ch.ID,
+		Enabled:              true,
+		EnableAutoAssignment: req.EnableAutoAssignment,
+		ChannelConfig:        string(configJSON),
+	}
+
+	if err := h.inboxSvc.Create(ctx, inbox); err != nil {
+		applogger.L().Errorf("Failed to create inbox for Facebook channel: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to create inbox", "details": err.Error()})
+		return
+	}
+
+	// Update ChannelFacebook with inbox_id
+	ch.InboxID = inbox.ID
+	if updateErr := h.fbService.UpdateFacebookChannel(ctx, ch.ID, map[string]interface{}{
+		"inbox_id": inbox.ID,
+	}); updateErr != nil {
+		applogger.L().Warnf("Failed to update ChannelFacebook inbox_id: %v", updateErr)
+	}
+
+	c.JSON(http.StatusCreated, gin.H{
+		"inbox": gin.H{
+			"id":                  inbox.ID,
+			"name":                inbox.Name,
+			"channel_type":        inbox.ChannelType,
+			"channel_id":          inbox.ChannelID,
+			"enabled":             inbox.Enabled,
+			"enable_auto_assignment": inbox.EnableAutoAssignment,
+		},
+		"facebook_channel": gin.H{
+			"id":                   ch.ID,
+			"page_id":              ch.PageID,
+			"page_name":            ch.PageName,
+			"webhook_verify_token": ch.WebhookVerifyToken,
+		},
+	})
+}
+
+// DeleteFacebookPage removes a Facebook Page channel and its inbox.
+// Reference: Chatwoot FacebookPagesController#destroy
+//
+// DELETE /api/v1/accounts/:id/facebook_pages/:page_id
+func (h *FacebookChannelHandler) DeleteFacebookPage(c *gin.Context) {
+	accountIDStr := c.Param("id")
+	accountID, err := strconv.ParseUint(accountIDStr, 10, 64)
+	if err != nil {
+		applogger.L().Errorf("Invalid account_id: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid account_id"})
+		return
+	}
+
+	pageID := c.Param("page_id")
+	if pageID == "" {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "page_id is required"})
+		return
+	}
+
+	ctx := c.Request.Context()
+
+	// Find ChannelFacebook by page_id
+	ch, err := h.fbService.GetFacebookByPageID(ctx, pageID)
+	if err != nil {
+		applogger.L().Errorf("Failed to find Facebook channel by page_id: %v", err)
+		c.JSON(http.StatusNotFound, gin.H{"error": "Facebook page channel not found"})
+		return
+	}
+
+	// Verify account ownership
+	if ch.AccountID != uint(accountID) {
+		c.JSON(http.StatusForbidden, gin.H{"error": "Facebook page channel does not belong to this account"})
+		return
+	}
+
+	// Delete the channel (includes webhook unsubscribe)
+	if err := h.fbService.DeleteFacebookChannel(ctx, ch.ID); err != nil {
+		applogger.L().Errorf("Failed to delete Facebook channel: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "failed to delete Facebook channel"})
+		return
+	}
+
+	// Delete the associated inbox (if exists)
+	if ch.InboxID > 0 {
+		if delErr := h.inboxSvc.DeleteByAccount(ctx, uint(accountID), ch.InboxID); delErr != nil {
+			applogger.L().Warnf("Failed to delete inbox for Facebook channel: %v", delErr)
+		}
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Facebook page channel deleted successfully"})
+}
+
+// === Reauthorization ===
+
+// ReauthorizeFacebookPageRequest is the DTO for refreshing a FB page access token.
+type ReauthorizeFacebookPageRequest struct {
+	PageAccessToken string `json:"page_access_token" validate:"required"`
+}
+
+// ReauthorizeFacebookPage refreshes an expired Facebook Page access token.
+// Reference: Chatwoot prompt_reauthorization! → refreshes long-lived token before 60-day expiry
+//
+// POST /api/v1/accounts/:id/facebook_pages/reauthorize
+func (h *FacebookChannelHandler) ReauthorizeFacebookPage(c *gin.Context) {
+	accountIDStr := c.Param("id")
+	accountID, err := strconv.ParseUint(accountIDStr, 10, 64)
+	if err != nil {
+		applogger.L().Errorf("Invalid account_id: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": "invalid account_id"})
+		return
+	}
+
+	var req ReauthorizeFacebookPageRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		applogger.L().Errorf("Failed to bind reauthorize request: %v", err)
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	ctx := c.Request.Context()
+
+	// Refresh the token via service
+	if err := h.fbService.RefreshPageAccessToken(ctx, uint(accountID), "facebook"); err != nil {
+		applogger.L().Errorf("Failed to refresh Facebook page access token: %v", err)
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "token refresh failed", "details": err.Error()})
+		return
+	}
+
+	c.JSON(http.StatusOK, gin.H{"message": "Facebook page access token refreshed successfully"})
+}
+
+// === Helper ===
+
+// generateFBVerifyToken creates a random verify token for webhook subscription.
+func generateFBVerifyToken() string {
+	return randomHex(24)
+}