Serve the React frontend

Signed-off-by: Martyn Ranyard <m@rtyn.berlin>

.gitignore

@@ -12,4 +12,7 @@
 # Output of the go coverage tool, specifically when used with LiteIDE
 *.out
 
+# Frontend compiled version gets built from source
+/web/react-frontend
+
 /twitchsingstools

internal/webserver/webserver.go

@@ -778,23 +778,80 @@ func CSVHandler(response http.ResponseWriter, request *http.Request) {
 	}
 }
 
+func JSONHandler(response http.ResponseWriter, request *http.Request) {
+	vars := mux.Vars(request)
+	if vars["key"] != ircBot.ChannelData[vars["channel"]].AdminKey {
+		UnauthorizedHandler(response, request)
+		return
+	}
+	type TemplateData struct {
+		Channel      string
+		Command      string
+		ExtraStrings string
+		SinceTime    time.Time
+		SinceTimeUTC string
+		Leaving      bool
+		HasLeft      bool
+		SongData     []AugmentedSingsVideoStruct
+		TopNSongs    []SongSings
+		TopNSingers  []SingerSings
+	}
+	channelData := ircBot.ChannelData[vars["channel"]]
+	if time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours() > 1 {
+		fmt.Printf("Cache of %d performances is older than an hour - %.1f hours old to be precise... fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
+		vids, err := fetchAllVoDs(channelData.TwitchUserID, channelData.Bearer)
+		if err != nil {
+			errCache := make([]irc.SingsVideoStruct, 0)
+			var ret irc.SingsVideoStruct
+			ret.FullTitle = "Error fetching videos: " + err.Error()
+			errCache = append(errCache, ret)
+			vids = errCache
+		}
+		updateCalculatedFields(vids)
+		ircBot.UpdateVideoCache(vars["channel"], vids)
+	} else {
+		fmt.Printf("Cache of %d performances is younger than an hour - %.1f hours old to be precise... not fetching.\n", len(ircBot.ChannelData[vars["channel"]].VideoCache), time.Now().Sub(ircBot.ChannelData[vars["channel"]].VideoCacheUpdated).Hours())
+	}
+	topNSongs := calculateTopNSongs(channelData.VideoCache, 10)
+	topNSingers := calculateTopNSingers(channelData.VideoCache, 10)
+	var td = TemplateData{channelData.Name, channelData.Command, channelData.ExtraStrings, channelData.JoinTime, channelData.JoinTime.Format(irc.UTCFormat), false, channelData.HasLeft, AugmentSingsVideoStructSlice(channelData.VideoCache), topNSongs, topNSingers}
+	response.Header().Add("Content-type", "application/json")
+	if request.URL.Path[0:5] == "/json" {
+		tmpl := template.Must(template.ParseFiles("web/data.json"))
+		tmpl.Execute(response, td)
+	} else if request.URL.Path[0:9] == "/topsongs" {
+		tmpl := template.Must(template.ParseFiles("web/topsongs.json"))
+		tmpl.Execute(response, td)
+	} else { // top 10 singers!
+		tmpl := template.Must(template.ParseFiles("web/topsingers.json"))
+		tmpl.Execute(response, td)
+	}
+}
+
+func ReactIndexHandler(entrypoint string) func(w http.ResponseWriter, r *http.Request) {
+	fn := func(w http.ResponseWriter, r *http.Request) {
+		http.ServeFile(w, r, entrypoint)
+	}
+
+	return http.HandlerFunc(fn)
+}
+
 func HandleHTTP(passedIrcBot *irc.KardBot) {
 	ircBot = passedIrcBot
 	r := mux.NewRouter()
 	loggedRouter := handlers.LoggingHandler(os.Stdout, r)
 	r.NotFoundHandler = http.HandlerFunc(NotFoundHandler)
-	r.HandleFunc("/", RootHandler)
 	r.HandleFunc("/healthz", HealthHandler)
 	r.HandleFunc("/web/{.*}", TemplateHandler)
-	r.PathPrefix("/static/").Handler(http.FileServer(http.Dir("./web/")))
-	r.HandleFunc("/cover.css", CSSHandler)
-	r.HandleFunc("/admin/{channel}/{key}", AdminHandler)
 	r.HandleFunc("/csv/{channel}/{key}", CSVHandler)
 	r.HandleFunc("/tsv/{channel}/{key}", CSVHandler)
-	//r.HandleFunc("/twitchadmin", TwitchAdminHandler)
-	//r.HandleFunc("/twitchtobackend", TwitchBackendHandler)
+	r.HandleFunc("/json/{channel}/{key}", JSONHandler)
+	r.HandleFunc("/topsongs/{channel}/{key}", JSONHandler)
+	r.HandleFunc("/topsingers/{channel}/{key}", JSONHandler)
 	r.Path("/twitchtobackend").Queries("access_token", "{access_token}", "scope", "{scope}", "token_type", "{token_type}").HandlerFunc(TwitchBackendHandler)
 	r.Path("/twitchadmin").Queries("code", "{code}", "scope", "{scope}").HandlerFunc(TwitchAdminHandler)
+	r.PathPrefix("/static").Handler(http.StripPrefix("/static", http.FileServer(http.Dir("./web/react-frontend/static"))))
+	r.PathPrefix("/").HandlerFunc(ReactIndexHandler("./web/react-frontend/index.html"))
 	http.Handle("/", r)
 	srv := &http.Server{
 		Handler:      loggedRouter,

web/data.json

@@ -0,0 +1,10 @@
+[{{ range $index, $data := .SongData }}{{ if $index }},{{end}}{
+    "publishDate": "{{ $data.Date }}",
+    "displayPublishDate": "{{ $data.NiceDate }}",
+    "songName": "{{ $data.SongTitle }}",
+    "singerName": "{{ $data.OtherSinger }}",
+    "lastSongDate": "{{ $data.LastSungSong }}",
+    "displayLastSongDate": "{{ $data.NiceLastSungSong }}",
+    "lastDuetDate": "{{ $data.LastSungSinger }}",
+    "displayLastDuetDate": "{{ $data.NiceLastSungSinger }}"
+}{{ end }}]

web/topsingers.json

@@ -0,0 +1,4 @@
+[{{ range $index, $data := .TopNSingers }}{{ if $index }},{{end}}{
+    "singerName": "{{ .SingerName }}",
+    "singCount": "{{ .Sings }}"
+}{{ end }}]

web/topsongs.json

@@ -0,0 +1,4 @@
+[{{ range $index, $data := .TopNSongs }}{{ if $index }},{{end}}{
+    "songName": "{{ .SongTitle }}",
+    "singCount": "{{ .Sings }}"
+}{{ end }}]