add single article page

src/internal/app/Article.go

@@ -0,0 +1,42 @@
+package app
+
+import (
+	"html/template"
+	"net/http"
+	"strconv"
+)
+
+// Enpoint that returns a list of articles given search terms in the post
+// request of a search form. Uses the content template.
+func (app *App) Article(w http.ResponseWriter, req *http.Request) {
+	// get id
+	id, err := strconv.ParseUint(req.PathValue("id"), 10, 64)
+	if err != nil {
+		http.NotFound(w, req)
+		return
+	}
+
+	// get articles
+	article, err := app.articles.ById(int(id))
+	if err != nil {
+		// treat as no result
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// render template
+	t := template.Must(template.ParseFiles(
+		"assets/templates/articlePage.html",
+		"assets/templates/layout.html",
+	))
+
+	data := map[string]interface{}{
+		"SelectedNavItemArticle": false,
+		"ArticlePageVM":          article.PageViewModel(),
+	}
+	err = t.ExecuteTemplate(w, "base", data)
+	if err != nil {
+		http.Error(w, "Failed to render template", http.StatusInternalServerError)
+		return
+	}
+}

src/internal/app/app.go

@@ -24,6 +24,8 @@ func (app *App) Routes() http.Handler {
 	mux.Handle("GET /page/{id}", http.HandlerFunc(app.Index))
 	mux.Handle("POST /up/search", http.HandlerFunc(app.UpSearch))
 
+	mux.Handle("GET /article/{id}", http.HandlerFunc(app.Article))
+
 	// serve files from the "static" directory
 	mux.Handle("GET /static/", http.StripPrefix("/static/", http.FileServer(http.Dir("./assets/static"))))