function to send webmention

owl_test.go

@@ -3,6 +3,7 @@ package owl_test
 import (
 	"h4kor/owl-blogs"
 	"math/rand"
+	"net/url"
 	"time"
 )
 
@@ -16,12 +17,20 @@ func (*MockHttpParser) ParseLinks(data []byte) ([]string, error) {
 	return []string{"http://example.com"}, nil
 }
 
+func (*MockHttpParser) GetWebmentionEndpoint(data []byte) (string, error) {
+	return "http://example.com/webmention", nil
+}
+
 type MockHttpRetriever struct{}
 
 func (*MockHttpRetriever) Get(url string) ([]byte, error) {
 	return []byte(""), nil
 }
 
+func (m *MockHttpRetriever) Post(url string, data url.Values) ([]byte, error) {
+	return []byte(""), nil
+}
+
 func randomName() string {
 	rand.Seed(time.Now().UnixNano())
 	var letters = []rune("abcdefghijklmnopqrstuvwxyz")

post.go

@@ -6,9 +6,11 @@ import (
 	"encoding/base64"
 	"fmt"
 	"io/ioutil"
+	"net/url"
 	"os"
 	"path"
 	"sort"
+	"time"
 
 	"github.com/yuin/goldmark"
 	"github.com/yuin/goldmark/extension"
@@ -272,8 +274,28 @@ func (post *Post) AddOutgoingWebmention(target string) error {
 	return post.PersistStatus(status)
 }
 
+func (post *Post) UpdateOutgoingWebmention(webmention *WebmentionOut) error {
+	status := post.Status()
+
+	// if target is not in status, add it
+	replaced := false
+	for i, t := range status.Webmentions {
+		if t.Target == webmention.Target {
+			status.Webmentions[i] = *webmention
+			replaced = true
+			break
+		}
+	}
+
+	if !replaced {
+		status.Webmentions = append(status.Webmentions, *webmention)
+	}
+
+	return post.PersistStatus(status)
+}
+
 func (post *Post) EnrichWebmention(source string) error {
-	html, err := post.user.repo.Retriever.Get(source)
+	html, err := post.user.repo.HttpClient.Get(source)
 	if err == nil {
 		webmention, err := post.Webmention(source)
 		if err != nil {
@@ -346,3 +368,37 @@ func (post *Post) ScanForLinks() error {
 	}
 	return nil
 }
+
+func (post *Post) SendWebmention(webmention WebmentionOut) error {
+	defer post.UpdateOutgoingWebmention(&webmention)
+	webmention.ScannedAt = time.Now()
+
+	html, err := post.user.repo.HttpClient.Get(webmention.Target)
+	if err != nil {
+		// TODO handle error
+		webmention.Supported = false
+		return err
+	}
+	endpoint, err := post.user.repo.Parser.GetWebmentionEndpoint(html)
+	if err != nil {
+		// TODO handle error
+		webmention.Supported = false
+		return err
+	}
+	webmention.Supported = true
+
+	// send webmention
+	payload := url.Values{}
+	payload.Set("source", post.FullUrl())
+	payload.Set("target", webmention.Target)
+	_, err = post.user.repo.HttpClient.Post(endpoint, payload)
+
+	if err != nil {
+		// TODO handle error
+		return err
+	}
+
+	// update webmention status
+	webmention.LastSentAt = time.Now()
+	return nil
+}

post_test.go

@@ -192,7 +192,7 @@ func TestPersistWebmention(t *testing.T) {
 
 func TestAddWebmentionCreatesFile(t *testing.T) {
 	repo := getTestRepo()
-	repo.Retriever = &MockHttpRetriever{}
+	repo.HttpClient = &MockHttpRetriever{}
 	repo.Parser = &MockHttpParser{}
 	user, _ := repo.CreateUser("testuser")
 	post, _ := user.CreateNewPost("testpost")
@@ -210,7 +210,7 @@ func TestAddWebmentionCreatesFile(t *testing.T) {
 
 func TestAddWebmentionNotOverwritingFile(t *testing.T) {
 	repo := getTestRepo()
-	repo.Retriever = &MockHttpRetriever{}
+	repo.HttpClient = &MockHttpRetriever{}
 	repo.Parser = &MockHttpParser{}
 	user, _ := repo.CreateUser("testuser")
 	post, _ := user.CreateNewPost("testpost")
@@ -240,7 +240,7 @@ func TestAddWebmentionNotOverwritingFile(t *testing.T) {
 
 func TestAddWebmentionAddsParsedTitle(t *testing.T) {
 	repo := getTestRepo()
-	repo.Retriever = &MockHttpRetriever{}
+	repo.HttpClient = &MockHttpRetriever{}
 	repo.Parser = &MockHttpParser{}
 	user, _ := repo.CreateUser("testuser")
 	post, _ := user.CreateNewPost("testpost")
@@ -352,3 +352,34 @@ func TestScanningForLinksDoesNotAddDuplicates(t *testing.T) {
 		t.Errorf("Expected target: %s, got %s", "https://example.com/hello", webmentions[0].Target)
 	}
 }
+
+func TestCanSendWebmention(t *testing.T) {
+	repo := getTestRepo()
+	repo.HttpClient = &MockHttpRetriever{}
+	repo.Parser = &MockHttpParser{}
+	user, _ := repo.CreateUser("testuser")
+	post, _ := user.CreateNewPost("testpost")
+
+	webmention := owl.WebmentionOut{
+		Target: "http://example.com",
+	}
+
+	err := post.SendWebmention(webmention)
+	if err != nil {
+		t.Errorf("Error sending webmention: %v", err)
+	}
+
+	webmentions := post.OutgoingWebmentions()
+
+	if len(webmentions) != 1 {
+		t.Errorf("Expected 1 webmention, got %d", len(webmentions))
+	}
+
+	if webmentions[0].Target != "http://example.com" {
+		t.Errorf("Expected target: %s, got %s", "http://example.com", webmentions[0].Target)
+	}
+
+	if webmentions[0].LastSentAt.IsZero() {
+		t.Errorf("Expected LastSentAt to be set")
+	}
+}

repository.go

@@ -20,8 +20,8 @@ type Repository struct {
 	single_user_mode bool
 	active_user      string
 	allow_raw_html   bool
-	Retriever        HttpRetriever
-	Parser           HttpParser
+	HttpClient       HttpClient
+	Parser           HtmlParser
 }
 
 type RepoConfig struct {
@@ -29,7 +29,7 @@ type RepoConfig struct {
 }
 
 func CreateRepository(name string) (Repository, error) {
-	newRepo := Repository{name: name, Parser: OwlMicroformatParser{}, Retriever: OwlHttpRetriever{}}
+	newRepo := Repository{name: name, Parser: OwlHtmlParser{}, HttpClient: OwlHttpClient{}}
 	// check if repository already exists
 	if dirExists(newRepo.Dir()) {
 		return Repository{}, fmt.Errorf("Repository already exists")
@@ -63,7 +63,7 @@ func CreateRepository(name string) (Repository, error) {
 
 func OpenRepository(name string) (Repository, error) {
 
-	repo := Repository{name: name, Parser: OwlMicroformatParser{}, Retriever: OwlHttpRetriever{}}
+	repo := Repository{name: name, Parser: OwlHtmlParser{}, HttpClient: OwlHttpClient{}}
 	if !dirExists(repo.Dir()) {
 		return Repository{}, fmt.Errorf("Repository does not exist: " + repo.Dir())
 	}

webmention.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"errors"
 	"net/http"
+	"net/url"
 	"strings"
 	"time"
 
@@ -24,24 +25,26 @@ type WebmentionOut struct {
 	LastSentAt time.Time `yaml:"last_sent_at"`
 }
 
-type HttpRetriever interface {
+type HttpClient interface {
 	Get(url string) ([]byte, error)
+	Post(url string, data url.Values) ([]byte, error)
 }
 
-type HttpParser interface {
+type HtmlParser interface {
 	ParseHEntry(data []byte) (ParsedHEntry, error)
 	ParseLinks(data []byte) ([]string, error)
+	GetWebmentionEndpoint(data []byte) (string, error)
 }
 
-type OwlHttpRetriever struct{}
+type OwlHttpClient struct{}
 
-type OwlMicroformatParser struct{}
+type OwlHtmlParser struct{}
 
 type ParsedHEntry struct {
 	Title string
 }
 
-func (OwlHttpRetriever) Get(url string) ([]byte, error) {
+func (OwlHttpClient) Get(url string) ([]byte, error) {
 	resp, err := http.Get(url)
 	if err != nil {
 		return []byte{}, err
@@ -52,6 +55,17 @@ func (OwlHttpRetriever) Get(url string) ([]byte, error) {
 	return data, err
 }
 
+func (OwlHttpClient) Post(url string, data url.Values) ([]byte, error) {
+	resp, err := http.Post(url, "application/x-www-form-urlencoded", strings.NewReader(data.Encode()))
+	if err != nil {
+		return []byte{}, err
+	}
+	var respData []byte
+	_, err = resp.Body.Read(respData)
+
+	return respData, err
+}
+
 func collectText(n *html.Node, buf *bytes.Buffer) {
 	if n.Type == html.TextNode {
 		buf.WriteString(n.Data)
@@ -61,7 +75,7 @@ func collectText(n *html.Node, buf *bytes.Buffer) {
 	}
 }
 
-func (OwlMicroformatParser) ParseHEntry(data []byte) (ParsedHEntry, error) {
+func (OwlHtmlParser) ParseHEntry(data []byte) (ParsedHEntry, error) {
 	doc, err := html.Parse(strings.NewReader(string(data)))
 	if err != nil {
 		return ParsedHEntry{}, err
@@ -104,7 +118,7 @@ func (OwlMicroformatParser) ParseHEntry(data []byte) (ParsedHEntry, error) {
 	return findHFeed(doc)
 }
 
-func (OwlMicroformatParser) ParseLinks(data []byte) ([]string, error) {
+func (OwlHtmlParser) ParseLinks(data []byte) ([]string, error) {
 	doc, err := html.Parse(strings.NewReader(string(data)))
 	if err != nil {
 		return make([]string, 0), err
@@ -129,3 +143,33 @@ func (OwlMicroformatParser) ParseLinks(data []byte) ([]string, error) {
 	return findLinks(doc)
 
 }
+
+func (OwlHtmlParser) GetWebmentionEndpoint(data []byte) (string, error) {
+	doc, err := html.Parse(strings.NewReader(string(data)))
+	if err != nil {
+		return "", err
+	}
+
+	var findEndpoint func(*html.Node) (string, error)
+	findEndpoint = func(n *html.Node) (string, error) {
+		if n.Type == html.ElementNode && n.Data == "link" {
+			for _, attr := range n.Attr {
+				if attr.Key == "rel" && attr.Val == "webmention" {
+					for _, attr := range n.Attr {
+						if attr.Key == "href" {
+							return attr.Val, nil
+						}
+					}
+				}
+			}
+		}
+		for c := n.FirstChild; c != nil; c = c.NextSibling {
+			endpoint, err := findEndpoint(c)
+			if err == nil {
+				return endpoint, nil
+			}
+		}
+		return "", errors.New("no webmention endpoint found")
+	}
+	return findEndpoint(doc)
+}

webmention_test.go

@@ -11,7 +11,7 @@ import (
 
 func TestParseValidHEntry(t *testing.T) {
 	html := []byte("<div class=\"h-entry\"><div class=\"p-name\">Foo</div></div>")
-	parser := &owl.OwlMicroformatParser{}
+	parser := &owl.OwlHtmlParser{}
 	entry, err := parser.ParseHEntry(html)
 
 	if err != nil {
@@ -24,7 +24,7 @@ func TestParseValidHEntry(t *testing.T) {
 
 func TestParseValidHEntryWithoutTitle(t *testing.T) {
 	html := []byte("<div class=\"h-entry\"></div><div class=\"p-name\">Foo</div>")
-	parser := &owl.OwlMicroformatParser{}
+	parser := &owl.OwlHtmlParser{}
 	entry, err := parser.ParseHEntry(html)
 
 	if err != nil {