Implement the news builder

builder/build.go

@@ -1,14 +1,119 @@
 package newsbuilder
 
 import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/yosssi/gohtml"
 	newsfeed "i2pgit.org/idk/newsgo/builder/feed"
 )
 
 type NewsBuilder struct {
-	Nodes []newsfeed.Node
-	File  string
+	Feed         newsfeed.Feed
+	ReleasesJson string
+	BlocklistXML string
+	URNID        string
+	TITLE        string
+	SITEURL      string
+	MAINFEED     string
+	BACKUPFEED   string
+	SUBTITLE     string
 }
 
-func (n *NewsBuilder) LoadFeed() {
-	n.Nodes = newsfeed.XMLData(n.File)
+func (nb *NewsBuilder) JSONtoXML() (string, error) {
+	content, err := ioutil.ReadFile(nb.ReleasesJson)
+	if err != nil {
+		return "", err
+	}
+	// Now let's unmarshall the data into `payload`
+	var payload []map[string]interface{}
+	err = json.Unmarshal(content, &payload)
+	if err != nil {
+		return "", err
+	}
+	str := ""
+	/*
+			<i2p:release date="2022-11-21" minVersion="0.9.9" minJavaVersion="1.8">
+		    <i2p:version>2.0.0</i2p:version>
+		    <i2p:update type="su3">
+		      <i2p:torrent href="magnet:?xt=urn:btih:a50f8479a39896f00431d7b500447fe303d2b6b5&amp;dn=i2pupdate-2.0.0.su3&amp;tr=http://tracker2.postman.i2p/announce.php"/>
+		      <i2p:url href="http://stats.i2p/i2p/2.0.0/i2pupdate.su3"/>
+		      <i2p:url href="http://mgp6yzdxeoqds3wucnbhfrdgpjjyqbiqjdwcfezpul3or7bzm4ga.b32.i2p/releases/2.0.0/i2pupdate.su3"/>
+		    </i2p:update>
+		  </i2p:release>
+	*/
+	releasedate := payload[0]["date"]
+	version := payload[0]["version"]
+	minVersion := payload[0]["minVersion"]
+	minJavaVersion := payload[0]["minJavaVersion"]
+	updates := payload[0]["updates"].(map[string]interface{})["su3"].(map[string]interface{})
+	magnet := updates["torrent"]
+	urls := updates["url"].([]interface{})
+	str += "<i2p:release date=" + releasedate.(string) + " minVersion=" + minVersion.(string) + " minJavaVersion=" + minJavaVersion.(string) + ">\n"
+	str += "<i2p:version>" + version.(string) + "</i2p:version>"
+	str += "<i2p:update type=\"su3\">"
+	str += "<i2p:torrent href=\"" + magnet.(string) + "\"/>"
+	for _, u := range urls {
+		str += "<i2p:url href=\"" + u.(string) + "\"/>"
+	}
+	str += "</i2p:update>"
+	str += "</i2p:release>"
+	return str, nil
+}
+
+func (nb *NewsBuilder) Build() (string, error) {
+	if err := nb.Feed.LoadHTML(); err != nil {
+		return "", fmt.Errorf("Build: error %s", err.Error())
+	}
+	current_time := time.Now()
+	str := "<?xml version='1.0' encoding='UTF-8'?>"
+	str += "<feed xmlns:i2p=\"http://geti2p.net/en/docs/spec/updates\" xmlns=\"http://www.w3.org/2005/Atom\" xml:lang=\"en\">"
+	str += "<id>" + "urn:uuid:" + nb.URNID + "</id>"
+	str += "<title>" + nb.TITLE + "</title>"
+	milli := current_time.Nanosecond() / 1000
+	t := fmt.Sprintf("%d-%02d-%02dT%02d:%02d:%02d.%02d+00:00\n", current_time.Year(), current_time.Month(), current_time.Day(), current_time.Hour(), current_time.Minute(), current_time.Second(), milli)
+	str += "<updated>" + t + "</updated>"
+	str += "<link href=\"" + nb.SITEURL + "\"/>"
+	str += "<link href=\"" + nb.MAINFEED + "\" rel=\"self\"/>"
+	if nb.BACKUPFEED != "" {
+		str += "<link href=\"" + nb.BACKUPFEED + "\" rel=\"alternate\"/>"
+	}
+	str += "<generator uri=\"http://idk.i2p/newsgo\" version=\"0.1.0\">newsgo</generator>"
+	str += "<subtitle>" + nb.SUBTITLE + "</subtitle>"
+	blocklistBytes, err := ioutil.ReadFile(nb.BlocklistXML)
+	if err != nil {
+		return "", err
+	}
+	str += string(blocklistBytes)
+	jsonxml, err := nb.JSONtoXML()
+	if err != nil {
+		return "", err
+	}
+	str += jsonxml
+	for index, _ := range nb.Feed.ArticlesSet {
+		art := nb.Feed.Article(index)
+		str += art.Entry()
+	}
+	str += "</feed>"
+	return gohtml.Format(str), nil
+}
+
+func Builder(newsFile, releasesJson, blocklistXML string) *NewsBuilder {
+	nb := &NewsBuilder{
+		Feed: newsfeed.Feed{
+			EntriesHTMLPath: newsFile,
+		},
+		ReleasesJson: releasesJson,
+		BlocklistXML: blocklistXML,
+		URNID:        uuid.New().String(),
+		TITLE:        "I2P News",
+		SITEURL:      "http://i2p-projekt.i2p",
+		MAINFEED:     "http://tc73n4kivdroccekirco7rhgxdg5f3cjvbaapabupeyzrqwv5guq.b32.i2p/news.atom.xml",
+		BACKUPFEED:   "http://dn3tvalnjz432qkqsvpfdqrwpqkw3ye4n4i2uyfr4jexvo3sp5ka.b32.i2p/news/news.atom.xml",
+		SUBTITLE:     "News feed, and router updates",
+	}
+	return nb
 }