77 lines
2.5 KiB
Go
77 lines
2.5 KiB
Go
package tiktok
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// WebhookHandler processes incoming TikTok webhook HTTP requests.
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// Reference: gochat's Telegram WebhookHandler pattern
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// + TikTok Business API webhook documentation
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//
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// TikTok webhook flow:
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// 1. Verification: GET request with verify_token challenge (on webhook setup)
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// 2. Events: POST requests with JSON event payloads (message.received, etc.)
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//
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// The WebhookHandler:
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// - Validates webhook authenticity (verify_token for setup, signature for events)
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// - Parses the JSON payload into TikTokWebhookEvent
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// - Delegates to IncomingProcessor for message processing
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import (
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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applogger "github.com/gochat/gochat/pkg/logger"
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)
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// WebhookHandler processes TikTok webhook HTTP requests.
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type WebhookHandler struct {
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service *TikTokService
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pipeline *IncomingProcessor
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}
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// NewWebhookHandler creates a TikTok webhook handler.
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func NewWebhookHandler(service *TikTokService, pipeline *IncomingProcessor) *WebhookHandler {
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return &WebhookHandler{
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service: service,
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pipeline: pipeline,
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}
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}
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// HandleWebhookRequest processes an incoming TikTok webhook HTTP POST request.
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// Returns the parsed TikTokWebhookEvent for the pipeline to process.
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func (h *WebhookHandler) HandleWebhookRequest(r *http.Request) (*TikTokWebhookEvent, error) {
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// Read request body
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body, err := io.ReadAll(r.Body)
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if err != nil {
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return nil, fmt.Errorf("tiktok webhook: failed to read body: %w", err)
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}
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defer r.Body.Close()
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if len(body) == 0 {
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return nil, fmt.Errorf("tiktok webhook: empty request body")
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}
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// Parse the webhook event
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var event TikTokWebhookEvent
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if err := json.Unmarshal(body, &event); err != nil {
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return nil, fmt.Errorf("tiktok webhook: failed to parse JSON: %w", err)
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}
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applogger.L().Infof("TikTok webhook: received event type=%s biz_id=%s", event.Type, event.BizID)
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return &event, nil
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}
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// HandleVerifyRequest processes a TikTok webhook verification GET request.
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// TikTok sends this during webhook setup to verify the endpoint.
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func (h *WebhookHandler) HandleVerifyRequest(r *http.Request, expectedVerifyToken string) (string, error) {
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verifyToken := r.URL.Query().Get("verify_token")
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challenge := r.URL.Query().Get("challenge")
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if verifyToken != expectedVerifyToken {
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return "", fmt.Errorf("tiktok webhook verify: token mismatch (expected=%s, got=%s)",
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expectedVerifyToken, verifyToken)
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}
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applogger.L().Infof("TikTok webhook verify: challenge accepted, token=%s", verifyToken)
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return challenge, nil
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} |