Added blog page, article page and added latest articles to start page.

blog/blog.go

@@ -0,0 +1,189 @@
+package blog
+
+import (
+	"github.com/Kugelschieber/marvinblum.de/tpl"
+	emvi "github.com/emvi/api-go"
+	"github.com/emvi/logbuch"
+	"github.com/gorilla/mux"
+	"html/template"
+	"net/http"
+	"os"
+	"strings"
+	"time"
+)
+
+const (
+	blogCacheTime     = time.Hour
+	maxLatestArticles = 3
+)
+
+var (
+	blog Blog
+)
+
+type Blog struct {
+	client       *emvi.Client
+	articles     map[string]emvi.Article // id -> article
+	articlesYear map[int][]emvi.Article  // year -> articles
+	nextUpdate   time.Time
+}
+
+func InitBlog() {
+	logbuch.Info("Initializing blog")
+	blog.client = emvi.NewClient(os.Getenv("MB_EMVI_CLIENT_ID"),
+		os.Getenv("MB_EMVI_CLIENT_SECRET"),
+		os.Getenv("MB_EMVI_ORGA"),
+		nil)
+	blog.nextUpdate = time.Now().Add(blogCacheTime)
+	blog.loadArticles()
+}
+
+func (blog *Blog) loadArticles() {
+	logbuch.Info("Refreshing blog articles...")
+	articles, offset, count := make(map[string]emvi.Article), 0, 1
+	var err error
+
+	for count > 0 {
+		var results []emvi.Article
+		results, _, err = blog.client.FindArticles("", &emvi.ArticleFilter{
+			BaseSearch:    emvi.BaseSearch{Offset: offset},
+			Tags:          "blog",
+			SortPublished: emvi.SortDescending,
+		})
+
+		if err != nil {
+			logbuch.Error("Error loading blog articles", logbuch.Fields{"err": err})
+			break
+		}
+
+		offset += len(results)
+		count = len(results)
+
+		for _, article := range results {
+			articles[article.Id] = article
+		}
+	}
+
+	if err == nil {
+		for k, v := range articles {
+			v.LatestArticleContent = blog.loadArticle(v)
+			articles[k] = v
+		}
+
+		blog.setArticles(articles)
+	}
+
+	blog.nextUpdate = time.Now().Add(blogCacheTime)
+	logbuch.Info("Done", logbuch.Fields{"count": len(articles)})
+}
+
+func (blog *Blog) loadArticle(article emvi.Article) *emvi.ArticleContent {
+	_, content, _, err := blog.client.GetArticle(article.Id, article.LatestArticleContent.LanguageId, 0)
+
+	if err != nil {
+		logbuch.Error("Error loading article", logbuch.Fields{"err": err, "id": article.Id})
+		return nil
+	}
+
+	logbuch.Debug("Article loaded", logbuch.Fields{"id": article.Id})
+	return content
+}
+
+func (blog *Blog) setArticles(articles map[string]emvi.Article) {
+	blog.articles = articles
+	blog.articlesYear = make(map[int][]emvi.Article)
+
+	for _, article := range articles {
+		if blog.articlesYear[article.Published.Year()] == nil {
+			blog.articlesYear[article.Published.Year()] = make([]emvi.Article, 0)
+		}
+
+		blog.articlesYear[article.Published.Year()] = append(blog.articlesYear[article.Published.Year()], article)
+	}
+}
+
+func (blog *Blog) getArticle(id string) emvi.Article {
+	blog.refreshIfRequired()
+	return blog.articles[id]
+}
+
+func (blog *Blog) getArticles() map[int][]emvi.Article {
+	blog.refreshIfRequired()
+	return blog.articlesYear
+}
+
+func (blog *Blog) getLatestArticles() []emvi.Article {
+	blog.refreshIfRequired()
+	articles := make([]emvi.Article, 0, 3)
+	i := 0
+
+	for _, v := range blog.articles {
+		articles = append(articles, v)
+		i++
+
+		if i > maxLatestArticles {
+			break
+		}
+	}
+
+	return articles
+}
+
+func (blog *Blog) refreshIfRequired() {
+	if blog.nextUpdate.Before(time.Now()) {
+		blog.loadArticles()
+	}
+}
+
+func GetLatestArticles() []emvi.Article {
+	return blog.getLatestArticles()
+}
+
+func ServeBlogPage() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		data := struct {
+			Articles map[int][]emvi.Article
+		}{
+			blog.getArticles(),
+		}
+
+		if err := tpl.Get().ExecuteTemplate(w, "blog.html", data); err != nil {
+			logbuch.Error("Error executing blog template", logbuch.Fields{"err": err})
+			w.WriteHeader(http.StatusInternalServerError)
+		}
+	}
+}
+
+func ServeBlogArticle() http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		vars := mux.Vars(r)
+		slug := strings.Split(vars["slug"], "-")
+
+		if len(slug) == 0 {
+			http.Redirect(w, r, "/notfound", http.StatusFound)
+			return
+		}
+
+		article := blog.getArticle(slug[len(slug)-1])
+
+		if len(article.Id) == 0 {
+			http.Redirect(w, r, "/notfound", http.StatusFound)
+			return
+		}
+
+		data := struct {
+			Title     string
+			Content   template.HTML
+			Published string
+		}{
+			article.LatestArticleContent.Title,
+			template.HTML(article.LatestArticleContent.Content),
+			article.Published.Format("2. January 2006"),
+		}
+
+		if err := tpl.Get().ExecuteTemplate(w, "article.html", data); err != nil {
+			logbuch.Error("Error executing blog article template", logbuch.Fields{"err": err})
+			w.WriteHeader(http.StatusInternalServerError)
+		}
+	}
+}

dev.sh

@@ -7,5 +7,8 @@ export MB_LOGLEVEL=debug
 export MB_ALLOWED_ORIGINS=*
 export MB_HOST=localhost:8080
 export MB_HOT_RELOAD=true
+export MB_EMVI_CLIENT_ID=3fBBn144yvSF9R3dPC8l
+export MB_EMVI_CLIENT_SECRET=dw3FeshelTgdf1Gj13J7uF5FfdPDi40sQvvwqeFVKTTyIDuCdlAHhRY72csFL6yg
+export MB_EMVI_ORGA=marvin
 
 go run main.go

docker-compose.yml

@@ -30,6 +30,10 @@ services:
     restart: always
     depends_on:
       - traefik
+    environment:
+      - MB_EMVI_CLIENT_ID: 3fBBn144yvSF9R3dPC8l
+      - MB_EMVI_CLIENT_SECRET: dw3FeshelTgdf1Gj13J7uF5FfdPDi40sQvvwqeFVKTTyIDuCdlAHhRY72csFL6yg
+      - MB_EMVI_ORGA: marvin
     labels:
       - "traefik.enable=true"
       - "traefik.http.routers.marvinblum.entrypoints=web"

go.mod

@@ -3,9 +3,11 @@ module github.com/Kugelschieber/marvinblum.de
 go 1.14
 
 require (
-	github.com/NYTimes/gziphandler v1.1.1 // indirect
-	github.com/caddyserver/certmagic v0.10.13 // indirect
-	github.com/emvi/logbuch v0.0.0-20200214115750-61de9b6d5934 // indirect
-	github.com/gorilla/mux v1.7.4 // indirect
-	github.com/rs/cors v1.7.0 // indirect
+	github.com/NYTimes/gziphandler v1.1.1
+	github.com/caddyserver/certmagic v0.10.13
+	github.com/emvi/api-go v0.0.0-20191210194347-0a945446f6a8
+	github.com/emvi/logbuch v0.0.0-20200214115750-61de9b6d5934
+	github.com/gorilla/mux v1.7.4
+	github.com/gosimple/slug v1.9.0
+	github.com/rs/cors v1.7.0
 )

go.sum

@@ -73,6 +73,8 @@ github.com/dnsimple/dnsimple-go v0.60.0/go.mod h1:O5TJ0/U6r7AfT8niYNlmohpLbCSG+c
 github.com/eapache/go-resiliency v1.1.0/go.mod h1:kFI+JgMyC7bLPUVY133qvEBtVayf5mFgVsvEsIPBvNs=
 github.com/eapache/go-xerial-snappy v0.0.0-20180814174437-776d5712da21/go.mod h1:+020luEh2TKB4/GOp8oxxtq0Daoen/Cii55CzbTV6DU=
 github.com/eapache/queue v1.1.0/go.mod h1:6eCeP0CKFpHLu8blIFXhExK/dRa7WDZfr6jVFPTqq+I=
+github.com/emvi/api-go v0.0.0-20191210194347-0a945446f6a8 h1:DZJfRdvwlybLvHkyeN8HRU4QnBFqVZg21ki4to1AVPo=
+github.com/emvi/api-go v0.0.0-20191210194347-0a945446f6a8/go.mod h1:g9RdDC3s5ebCknAHQQ5PjoM2vRFSyyGoOUX3QkDKU+o=
 github.com/emvi/logbuch v0.0.0-20200214115750-61de9b6d5934 h1:+G10WRp72llJuaW89QezNK8QU9SsOmd5Ja7ocrrUaI0=
 github.com/emvi/logbuch v0.0.0-20200214115750-61de9b6d5934/go.mod h1:J2Wgbr3BuSc1JO+D2MBVh6q3WPVSK5GzktwWz8pvkKw=
 github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
@@ -137,6 +139,8 @@ github.com/gorilla/mux v1.6.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2z
 github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/mux v1.7.4 h1:VuZ8uybHlWmqV03+zRzdwKL4tUnIp1MAQtp1mIFE1bc=
 github.com/gorilla/mux v1.7.4/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/gosimple/slug v1.9.0 h1:r5vDcYrFz9BmfIAMC829un9hq7hKM4cHUrsv36LbEqs=
+github.com/gosimple/slug v1.9.0/go.mod h1:AMZ+sOVe65uByN3kgEyf9WEBKBCSS+dJjMX9x4vDJbg=
 github.com/grpc-ecosystem/grpc-gateway v1.8.5/go.mod h1:vNeuVxBJEsws4ogUvrchl83t/GYV9WGTSLVdBhOQFDY=
 github.com/h2non/parth v0.0.0-20190131123155-b4df798d6542/go.mod h1:Ow0tF8D4Kplbc8s8sSb3V2oUCygFHVp8gC3Dn6U4MNI=
 github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
@@ -216,6 +220,8 @@ github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
 github.com/prometheus/procfs v0.0.3/go.mod h1:4A/X28fw3Fc593LaREMrKMqOKvUAntwMDaekg4FpcdQ=
 github.com/rainycape/memcache v0.0.0-20150622160815-1031fa0ce2f2/go.mod h1:7tZKcyumwBO6qip7RNQ5r77yrssm9bfCowcLEBcU5IA=
+github.com/rainycape/unidecode v0.0.0-20150907023854-cb7f23ec59be h1:ta7tUOvsPHVHGom5hKW5VXNc2xZIkfCKP8iaqOyYtUQ=
+github.com/rainycape/unidecode v0.0.0-20150907023854-cb7f23ec59be/go.mod h1:MIDFMn7db1kT65GmV94GzpX9Qdi7N/pQlwb+AN8wh+Q=
 github.com/rcrowley/go-metrics v0.0.0-20181016184325-3113b8401b8a/go.mod h1:bCqnVzQkZxMG4s8nGwiZ5l3QUCyqpo9Y+/ZMZ9VjZe4=
 github.com/rogpeppe/fastuuid v0.0.0-20150106093220-6724a57986af/go.mod h1:XWv6SoW27p1b0cqNHllgS5HIMJraePCO15w5zCzIWYg=
 github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=

main.go

@@ -1,13 +1,14 @@
 package main
 
 import (
-	"bytes"
+	"github.com/Kugelschieber/marvinblum.de/blog"
+	"github.com/Kugelschieber/marvinblum.de/tpl"
 	"github.com/NYTimes/gziphandler"
 	"github.com/caddyserver/certmagic"
+	emvi "github.com/emvi/api-go"
 	"github.com/emvi/logbuch"
 	"github.com/gorilla/mux"
 	"github.com/rs/cors"
-	"html/template"
 	"net/http"
 	"os"
 	"strings"
@@ -16,17 +17,10 @@ import (
 const (
 	staticDir       = "static"
 	staticDirPrefix = "/static/"
-	templateDir     = "template/*"
 	logTimeFormat   = "2006-01-02_15:04:05"
 	envPrefix       = "MB_"
 )
 
-var (
-	tpl       *template.Template
-	tplCache  = make(map[string][]byte)
-	hotReload bool
-)
-
 func configureLog() {
 	logbuch.SetFormatter(logbuch.NewFieldFormatter(logTimeFormat, "\t\t"))
 	logbuch.Info("Configure logging...")
@@ -50,42 +44,17 @@ func logEnvConfig() {
 	}
 }
 
-func loadTemplate() {
-	logbuch.Debug("Loading templates")
-	var err error
-	tpl, err = template.ParseGlob(templateDir)
-
-	if err != nil {
-		logbuch.Fatal("Error loading template", logbuch.Fields{"err": err})
-	}
-
-	hotReload = os.Getenv("MB_HOT_RELOAD") == "true"
-	logbuch.Debug("Templates loaded", logbuch.Fields{"hot_reload": hotReload})
-}
-
-func renderTemplate(name string) {
-	logbuch.Debug("Rendering template", logbuch.Fields{"name": name})
-	var buffer bytes.Buffer
-
-	if err := tpl.ExecuteTemplate(&buffer, name, nil); err != nil {
-		logbuch.Fatal("Error executing template", logbuch.Fields{"err": err, "name": name})
-	}
-
-	tplCache[name] = buffer.Bytes()
-}
-
-func serveTemplate(name string) http.HandlerFunc {
-	// render once so we have it in cache
-	renderTemplate(name)
-
+func serveAbout() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		if hotReload {
-			loadTemplate()
-			renderTemplate(name)
+		data := struct {
+			Articles []emvi.Article
+		}{
+			blog.GetLatestArticles(),
 		}
 
-		if _, err := w.Write(tplCache[name]); err != nil {
-			logbuch.Error("Error returning page to client", logbuch.Fields{"err": err, "name": name})
+		if err := tpl.Get().ExecuteTemplate(w, "about.html", data); err != nil {
+			logbuch.Error("Error executing blog template", logbuch.Fields{"err": err})
+			w.WriteHeader(http.StatusInternalServerError)
 		}
 	}
 }
@@ -93,10 +62,11 @@ func serveTemplate(name string) http.HandlerFunc {
 func setupRouter() *mux.Router {
 	router := mux.NewRouter()
 	router.PathPrefix(staticDirPrefix).Handler(http.StripPrefix(staticDirPrefix, gziphandler.GzipHandler(http.FileServer(http.Dir(staticDir)))))
-	router.Handle("/legal", serveTemplate("legal.html"))
-	router.Handle("/blog", serveTemplate("blog.html"))
-	router.Handle("/", serveTemplate("about.html"))
-	router.NotFoundHandler = serveTemplate("notfound.html")
+	router.Handle("/blog/{slug}", blog.ServeBlogArticle())
+	router.Handle("/blog", blog.ServeBlogPage())
+	router.Handle("/legal", tpl.ServeTemplate("legal.html"))
+	router.Handle("/", serveAbout())
+	router.NotFoundHandler = tpl.ServeTemplate("notfound.html")
 	return router
 }
 
@@ -136,7 +106,8 @@ func start(handler http.Handler) {
 func main() {
 	configureLog()
 	logEnvConfig()
-	loadTemplate()
+	tpl.LoadTemplate()
+	blog.InitBlog()
 	router := setupRouter()
 	corsConfig := configureCors(router)
 	start(corsConfig)

template/about.html

@@ -19,9 +19,13 @@
 </section>
 <section>
     <h2>latest blog posts</h2>
-    <p>
-        TODO
-    </p>
+    {{range $article := .Articles}}
+        <p>
+            <a href="/blog/{{slug $article.LatestArticleContent.Title}}-{{$article.Id}}">{{$article.LatestArticleContent.Title}}</a>
+        </p>
+    {{else}}
+        <p>There are no blog posts yet...</p>
+    {{end}}
     <p>
         <a href="/blog">View all</a>
     </p>

template/article.html

@@ -0,0 +1,10 @@
+{{template "head.html"}}
+{{template "menu.html"}}
+
+<section>
+    <h1>{{.Title}}</h1>
+    <small>Published on {{.Published}}</small>
+    {{.Content}}
+</section>
+
+{{template "end.html"}}

template/blog.html

@@ -2,7 +2,18 @@
 {{template "menu.html"}}
 
 <section>
-    <p>TODO Blog</p>
+    <h1>Blog</h1>
+    {{range $year, $articles := .Articles}}
+        <h2>{{$year}}</h2>
+
+        {{range $article := $articles}}
+            <p>
+                <a href="/blog/{{slug $article.LatestArticleContent.Title}}-{{$article.Id}}">{{$article.LatestArticleContent.Title}}</a>
+            </p>
+        {{end}}
+    {{else}}
+        <p>There are no blog posts yet...</p>
+    {{end}}
 </section>
 
 {{template "end.html"}}

template/notfound.html

@@ -5,7 +5,7 @@
     <h2>Page not found</h2>
     <p>
         Nothing to see here...<br />
-        <a href="/">Go back Home</a>
+        <a href="/">Return home</a>
     </p>
 </section>
 

tpl/template.go

@@ -0,0 +1,68 @@
+package tpl
+
+import (
+	"bytes"
+	"github.com/emvi/logbuch"
+	"github.com/gosimple/slug"
+	"html/template"
+	"net/http"
+	"os"
+)
+
+const (
+	templateDir = "template/*"
+)
+
+var (
+	tpl       *template.Template
+	tplCache  = make(map[string][]byte)
+	hotReload bool
+)
+
+var funcMap = template.FuncMap{
+	"slug": slug.Make,
+}
+
+func LoadTemplate() {
+	logbuch.Debug("Loading templates")
+	var err error
+	tpl, err = template.New("").Funcs(funcMap).ParseGlob(templateDir)
+
+	if err != nil {
+		logbuch.Fatal("Error loading template", logbuch.Fields{"err": err})
+	}
+
+	hotReload = os.Getenv("MB_HOT_RELOAD") == "true"
+	logbuch.Debug("Templates loaded", logbuch.Fields{"hot_reload": hotReload})
+}
+
+func renderTemplate(name string) {
+	logbuch.Debug("Rendering template", logbuch.Fields{"name": name})
+	var buffer bytes.Buffer
+
+	if err := tpl.ExecuteTemplate(&buffer, name, nil); err != nil {
+		logbuch.Fatal("Error executing template", logbuch.Fields{"err": err, "name": name})
+	}
+
+	tplCache[name] = buffer.Bytes()
+}
+
+func Get() *template.Template {
+	return tpl
+}
+
+func ServeTemplate(name string) http.HandlerFunc {
+	// render once so we have it in cache
+	renderTemplate(name)
+
+	return func(w http.ResponseWriter, r *http.Request) {
+		if hotReload {
+			LoadTemplate()
+			renderTemplate(name)
+		}
+
+		if _, err := w.Write(tplCache[name]); err != nil {
+			logbuch.Error("Error returning page to client", logbuch.Fields{"err": err, "name": name})
+		}
+	}
+}