first jab at mf2 parsing and testing

.idea/.gitignore

@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/go-jamming.iml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/go-jamming.iml" filepath="$PROJECT_DIR$/.idea/go-jamming.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

app/webmention/microformats.go

@@ -0,0 +1,47 @@
+package webmention
+
+import "willnorris.com/go/microformats"
+
+// Go stuff: entry.Properties["name"][0].(string),
+// JS stuff: hEntry.properties?.name?.[0]
+// The problem: convoluted syntax and no optional chaining!
+func mfstr(mf *microformats.Microformat, key string) string {
+	val := mf.Properties[key]
+	if len(val) == 0 {
+		return ""
+	}
+
+	str, ok := val[0].(string)
+	if !ok {
+		// in very weird cases, it could be a map holding a value, like in mf2's "photo"
+		valMap, ok2 := val[0].(map[string]string)
+		if !ok2 {
+			str = ""
+		}
+		str = valMap["value"]
+	}
+
+	return str
+}
+
+func mfmap(mf *microformats.Microformat, key string) map[string]string {
+	val := mf.Properties[key]
+	if len(val) == 0 {
+		return map[string]string{}
+	}
+	mapVal, ok := val[0].(map[string]string)
+	if !ok {
+		return map[string]string{}
+	}
+	return mapVal
+}
+
+func mfprop(mf *microformats.Microformat, key string) *microformats.Microformat {
+	val := mf.Properties[key]
+	if len(val) == 0 {
+		return &microformats.Microformat{
+			Properties: map[string][]interface{}{},
+		}
+	}
+	return val[0].(*microformats.Microformat)
+}

app/webmention/receive.go

@@ -3,6 +3,7 @@ package webmention
 
 import (
 	"fmt"
+	"net/url"
 	"strings"
 	"os"
 	"crypto/md5"
@@ -29,6 +30,11 @@ func (wm *webmention) asPath(conf *common.Config) string {
 	return conf.DataPath + "/" + domain + "/" + filename + ".json"
 }
 
+func (wm *webmention) sourceUrl() *url.URL {
+	url, _ := url.Parse(wm.source)
+	return url
+}
+
 // used as a "class" to iject dependencies, just to be able to test. Do NOT like htis. 
 // Is there a better way? e.g. in validate, I just pass rest.Client as an arg. Not great either. 
 type receiver struct {
@@ -53,16 +59,99 @@ func (recv *receiver) deletePossibleOlderWebmention(wm webmention) {
 	os.Remove(wm.asPath(recv.conf))
 }
 
+func getHEntry(data *microformats.Data) *microformats.Microformat {
+	for _, itm := range data.Items {
+		if common.Includes(itm.Type, "h-entry") {
+			return itm
+		}
+	}
+	return nil
+}
+
+type indiewebAuthor struct {
+	name string
+	picture string
+}
+
+type indiewebData struct {
+	author indiewebAuthor
+	name string
+	content string
+	published string // TODO to a date
+	url string
+	dateType string // TODO json property "type"
+	source string
+	target string
+}
+
 func (recv *receiver) processSourceBody(body string, wm webmention) {
-	if strings.Index(body, wm.target) == -1 {
+	if !strings.Contains(body, wm.target) {
 		log.Warn().Str("target", wm.target).Msg("ABORT: no mention of target found in html src of source!")
 		return
 	}
 
 	r := strings.NewReader(body)
-	data := microformats.Parse(r, nil)
-
-	fmt.Println(data.Items[0].Type[0]) // h-entry
-	// then: .Properties on Items[0]
-	// see https://github.com/willnorris/microformats/blob/main/microformats.go
+	data := microformats.Parse(r, wm.sourceUrl())
+	hEntry := getHEntry(data)
+	var indieweb *indiewebData
+	if hEntry == nil {
+		indieweb = parseBodyAsNonIndiewebSite(body, wm)
+	} else {
+		indieweb = parseBodyAsIndiewebSite(hEntry, wm)
+	}
+	
+	saveWebmentionToDisk(wm, indieweb)
+	log.Info().Str("file", wm.asPath(recv.conf)).Msg("OK: webmention processed.")
+}
+
+func saveWebmentionToDisk(wm webmention, indieweb *indiewebData) {
+
+}
+
+// TODO I'm smelling very unstable code, apply https://golang.org/doc/effective_go#recover here?
+// see https://github.com/willnorris/microformats/blob/main/microformats.go
+func parseBodyAsIndiewebSite(hEntry *microformats.Microformat, wm webmention) *indiewebData {
+	name := mfstr(hEntry, "name")
+	authorName := mfstr(mfprop(hEntry, "author"), "name")
+	if authorName == "" {
+		authorName = mfprop(hEntry, "author").Value
+	}
+	// TODO sometimes it's picture.value??
+	pic := mfstr(mfprop(hEntry, "author"), "photo")
+	summary := mfstr(hEntry, "summary")
+	contentEntry := mfmap(hEntry, "content")["value"]
+	bridgyTwitterContent := mfstr(hEntry, "bridgy-twitter-content")
+
+	return &indiewebData{
+		name: name,
+		author: indiewebAuthor{
+			name: authorName,
+			picture: pic,
+		},
+		content: determineContent(summary, contentEntry, bridgyTwitterContent),
+		source: wm.source,
+		target: wm.target,
+	}
+
+	//len(entry.Properties["hoopw"])
+}
+
+func shorten(txt string) string {
+	if len(txt) <= 250 {
+		return txt
+	}
+	return txt[0:250] + "..."
+}
+
+func determineContent(summary string, contentEntry string, bridgyTwitterContent string) string {
+	if bridgyTwitterContent != "" {
+		return shorten(bridgyTwitterContent)
+	} else if summary != "" {
+		return shorten(summary)
+	}
+	return shorten(contentEntry)
+}
+
+func parseBodyAsNonIndiewebSite(body string, wm webmention) *indiewebData {
+	return nil
 }

app/webmention/receive_test.go

@@ -2,9 +2,9 @@
 package webmention
 
 import (
-	"testing"
-	"os"
 	"errors"
+	"os"
+	"testing"
 
 	"github.com/wgroeneveld/go-jamming/common"
 	"github.com/wgroeneveld/go-jamming/mocks"
@@ -36,6 +36,26 @@ func writeSomethingTo(filename string) {
 	defer file.Close()	
 }
 
+func TestReceiveTargetExistsSavesWebmentionToDisk(t *testing.T) {
+	os.MkdirAll("testdata/jefklakscodex.com", os.ModePerm)
+	//defer os.RemoveAll("testdata")
+
+	wm := webmention{
+		source: "https://brainbaking.com",
+		target: "https://jefklakscodex.com/articles",
+	}
+	//filename := wm.asPath(conf)
+
+	receiver := &receiver {
+		conf: conf,
+		restClient: &mocks.RestClientMock{
+			GetBodyFunc: mocks.BodyFunc(t, "../../mocks/valid-indieweb-source.html"),
+		},
+	}
+
+	receiver.receive(wm)
+}
+
 func TestReceiveTargetDoesNotExistAnymoreDeletesPossiblyOlderWebmention(t *testing.T) {
 	os.MkdirAll("testdata/jefklakscodex.com", os.ModePerm)
 	defer os.RemoveAll("testdata")

common/config.go

@@ -21,7 +21,7 @@ type Config struct {
 
 func (c *Config) FetchDomain(url string) (string, error) {
 	for _, domain := range c.AllowedWebmentionSources {
-		if strings.Index(url, domain) != -1 {
+		if strings.Contains(url, domain) {
 			return domain, nil
 		}
 	}

common/slices.go

@@ -0,0 +1,10 @@
+package common
+
+func Includes(slice []string, elem string) bool {
+	for _, el := range slice {
+		if el == elem {
+			return true
+		}
+	}
+	return false
+}

common/slices_test.go

@@ -0,0 +1,21 @@
+package common
+
+import "testing"
+
+func TestIncludesElemInArrayTrue(t *testing.T) {
+	arr := []string{ "one", "two"}
+
+	result := Includes(arr, "two")
+	if result != true {
+		t.Error("Should be in there")
+	}
+}
+
+func TestIncludesElemNotInArrayFalse(t *testing.T) {
+	arr := []string{ "one", "two"}
+
+	result := Includes(arr, "three")
+	if result != false {
+		t.Error("Should NOT be in there")
+	}
+}

mocks/restclient.go

@@ -2,6 +2,8 @@
 package mocks
 
 import (
+	"testing"
+	"io/ioutil"
 	"net/http"
 )
 
@@ -19,3 +21,12 @@ func (m *RestClientMock) GetBody(url string) (string, error) {
 	return m.GetBodyFunc(url)
 }
 
+func BodyFunc(t *testing.T, mockfile string) func(string) (string, error) {
+	html, err := ioutil.ReadFile(mockfile)
+	if err != nil {
+		t.Error(err)
+	}
+	return func(url string) (string, error) {
+		return string(html), nil
+	}
+}

mocks/valid-indieweb-source.html

@@ -133,6 +133,7 @@
         
     </head>
     <body>
+        Check this out: <a href="https://jefklakscodex.com/articles">cool stuff</a>!
         <svg width="0" height="0" class="hidden">
   <symbol viewBox="0 0 24 24" id="lock" xmlns="http://www.w3.org/2000/svg">
     <path fill="currentColor" d="M14 15C14 16.11 13.11 17 12 17C10.89 17 10 16.1 10 15C10 13.89 10.89 13 12 13C13.11 13 14 13.9 14 15M13.09 20C13.21 20.72 13.46 21.39 13.81 22H6C4.89 22 4 21.1 4 20V10C4 8.89 4.89 8 6 8H7V6C7 3.24 9.24 1 12 1S17 3.24 17 6V8H18C19.11 8 20 8.9 20 10V13.09C19.67 13.04 19.34 13 19 13C18.66 13 18.33 13.04 18 13.09V10H6V20H13.09M9 8H15V6C15 4.34 13.66 3 12 3S9 4.34 9 6V8M21.34 15.84L17.75 19.43L16.16 17.84L15 19L17.75 22L22.5 17.25L21.34 15.84Z" />