From ad8cbbf5560f3b0868ef253dce235112dfcc43f6 Mon Sep 17 00:00:00 2001
From: Niko Abeler <niko@rerere.org>
Date: Fri, 11 Aug 2023 16:11:59 +0200
Subject: [PATCH] sending webmentions again

---
 app/webmention_service.go | 61 +++++++++++++++++++++++++++++++++++++++
 cmd/owl/main.go           | 10 +++----
 2 files changed, 66 insertions(+), 5 deletions(-)

diff --git a/app/webmention_service.go b/app/webmention_service.go
index 47a5ee7..ba2c2c0 100644
--- a/app/webmention_service.go
+++ b/app/webmention_service.go
@@ -1,25 +1,32 @@
 package app
 
 import (
+	"fmt"
+	"net/url"
 	"owl-blogs/app/owlhttp"
 	"owl-blogs/app/repository"
+	"owl-blogs/config"
+	"owl-blogs/domain/model"
 	"owl-blogs/interactions"
 	"time"
 )
 
 type WebmentionService struct {
+	ConfigRepo            repository.ConfigRepository
 	InteractionRepository repository.InteractionRepository
 	EntryRepository       repository.EntryRepository
 	Http                  owlhttp.HttpClient
 }
 
 func NewWebmentionService(
+	configRepo repository.ConfigRepository,
 	interactionRepository repository.InteractionRepository,
 	entryRepository repository.EntryRepository,
 	http owlhttp.HttpClient,
 	bus *EventBus,
 ) *WebmentionService {
 	svc := &WebmentionService{
+		ConfigRepo:            configRepo,
 		InteractionRepository: interactionRepository,
 		EntryRepository:       entryRepository,
 		Http:                  http,
@@ -90,3 +97,57 @@ func (s *WebmentionService) ProcessWebmention(source string, target string) erro
 		return err
 	}
 }
+
+func (s *WebmentionService) ScanForLinks(entry model.Entry) ([]string, error) {
+	content := string(entry.Content())
+	return ParseLinksFromString(content)
+}
+
+func (s *WebmentionService) FullEntryUrl(entry model.Entry) string {
+	siteConfig := model.SiteConfig{}
+	s.ConfigRepo.Get(config.SITE_CONFIG, &siteConfig)
+
+	url, _ := url.JoinPath(
+		siteConfig.FullUrl,
+		fmt.Sprintf("/posts/%s/", entry.ID()),
+	)
+	return url
+}
+
+func (s *WebmentionService) SendWebmention(entry model.Entry) error {
+	links, err := s.ScanForLinks(entry)
+	if err != nil {
+		return err
+	}
+	for _, target := range links {
+		resp, err := s.Http.Get(target)
+		if err != nil {
+			continue
+		}
+		endpoint, err := GetWebmentionEndpoint(resp)
+		if err != nil {
+			continue
+		}
+		payload := url.Values{}
+		payload.Set("source", s.FullEntryUrl(entry))
+		payload.Set("target", target)
+		_, err = s.Http.PostForm(endpoint, payload)
+		if err != nil {
+			continue
+		}
+		println("Send webmention for target", target)
+	}
+	return nil
+}
+
+func (s *WebmentionService) NotifyEntryCreated(entry model.Entry) {
+	s.SendWebmention(entry)
+}
+
+func (s *WebmentionService) NotifyEntryUpdated(entry model.Entry) {
+	s.SendWebmention(entry)
+}
+
+func (s *WebmentionService) NotifyEntryDeleted(entry model.Entry) {
+	s.SendWebmention(entry)
+}
diff --git a/cmd/owl/main.go b/cmd/owl/main.go
index 4fb3cf8..39bea94 100644
--- a/cmd/owl/main.go
+++ b/cmd/owl/main.go
@@ -47,7 +47,7 @@ func App(db infra.Database) *web.WebApp {
 	entryRepo := infra.NewEntryRepository(db, entryRegister)
 	binRepo := infra.NewBinaryFileRepo(db)
 	authorRepo := infra.NewDefaultAuthorRepo(db)
-	siteConfigRepo := infra.NewConfigRepo(db)
+	configRepo := infra.NewConfigRepo(db)
 	interactionRepo := infra.NewInteractionRepo(db, interactionRegister)
 
 	// Create External Services
@@ -59,21 +59,21 @@ func App(db infra.Database) *web.WebApp {
 	// Create Services
 	entryService := app.NewEntryService(entryRepo, eventBus)
 	binaryService := app.NewBinaryFileService(binRepo)
-	authorService := app.NewAuthorService(authorRepo, siteConfigRepo)
+	authorService := app.NewAuthorService(authorRepo, configRepo)
 	webmentionService := app.NewWebmentionService(
-		interactionRepo, entryRepo, httpClient, eventBus,
+		configRepo, interactionRepo, entryRepo, httpClient, eventBus,
 	)
 
 	// plugins
 	plugings.NewEcho(eventBus)
 	plugings.RegisterInstagram(
-		siteConfigRepo, configRegister, binaryService, eventBus,
+		configRepo, configRegister, binaryService, eventBus,
 	)
 
 	// Create WebApp
 	return web.NewWebApp(
 		entryService, entryRegister, binaryService,
-		authorService, siteConfigRepo, configRegister,
+		authorService, configRepo, configRegister,
 		webmentionService, interactionRepo,
 	)