From c735553214400f3af69e516ff41a6da9214449a7 Mon Sep 17 00:00:00 2001
From: jan <jan@ruken.pw>
Date: Mon, 14 Nov 2016 16:55:50 +0100
Subject: likes und so.


diff --git a/assets_src/js/lib/dom.js b/assets_src/js/lib/dom.js
index bfbeea7..3c2f4d9 100644
--- a/assets_src/js/lib/dom.js
+++ b/assets_src/js/lib/dom.js
@@ -17,6 +17,16 @@ export function closest(el, fn) {
 	return null;
 }
 
+export function withClass(className) {
+	const els = document.getElementsByClassName(className);
+	const arr = [];
+
+	for (let i = 0; i < els.length; i++) {
+		arr.push(els.item(i));
+	}
+	return arr;
+}
+
 export function next(el, fn) {
 	if (!el) {
 		return null;
diff --git a/assets_src/js/like.js b/assets_src/js/like.js
new file mode 100644
index 0000000..03b15a1
--- /dev/null
+++ b/assets_src/js/like.js
@@ -0,0 +1,22 @@
+import * as ajax from './lib/ajax';
+import * as dom from './lib/dom';
+
+async function updateLikeCount(el) {
+	const type = parseInt(el.getAttribute('content-type'), 10);
+	const contentId = parseInt(el.getAttribute('content-id'), 10);
+
+	if (isNaN(type) || isNaN(contentId)) {
+		return;
+	}
+
+	const count = await ajax.get(`/api/likes/count?id=${contentId}&type=${type}`, {});
+
+	el.textContent = count;
+}
+
+dom.ready(() => {
+	dom.withClass('like-count')
+		.forEach(el => {
+			updateLikeCount(el);
+		});
+});
diff --git a/frontend/renderer.go b/frontend/renderer.go
index d529dff..9c1f7a7 100644
--- a/frontend/renderer.go
+++ b/frontend/renderer.go
@@ -65,6 +65,15 @@ func New(path string, functions map[string]interface{}) *Renderer {
 		"makeRangePair": func(idx int, value interface{}) RangePair {
 			return RangePair{idx, value}
 		},
+		"map": func(values ...interface{}) map[string]interface{} {
+			m := make(map[string]interface{}, len(values)/2)
+			for i := 0; i < len(values); i += 2 {
+				key, _ := values[i].(string)
+				m[key] = values[i+1]
+			}
+
+			return m
+		},
 		"makeObject": func(name string, existing interface{}, newKey string, newData interface{}) map[string]interface{} {
 			d := make(map[string]interface{})
 			d[name] = existing
diff --git a/main.go b/main.go
index dd00a9b..02ef9e7 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,7 @@ import (
 	"fagott.pw/grilist/frontend"
 	"fagott.pw/grilist/grilist"
 	"fagott.pw/grilist/modules/grils"
+	"fagott.pw/grilist/modules/likes"
 	"fagott.pw/grilist/modules/lists"
 	"fagott.pw/grilist/modules/search"
 	"fagott.pw/grilist/modules/series"
@@ -106,6 +107,7 @@ func main() {
 	loadModule(search.New())
 	loadModule(user.New())
 	loadModule(series.New())
+	loadModule(likes.New())
 	router.GET("/dashboard", viewDashboard)
 
 	log.Fatal(http.ListenAndServe(":8080", nil))
diff --git a/models/like.go b/models/like.go
new file mode 100644
index 0000000..2faf384
--- /dev/null
+++ b/models/like.go
@@ -0,0 +1,14 @@
+package models
+
+import "fagott.pw/charakterin"
+
+const (
+	LIKE_LIST = 0
+)
+
+type Like struct {
+	ContentID   int
+	Content     interface{}
+	User        *charakterin.User
+	ContentType int
+}
diff --git a/modules/likes/likes.go b/modules/likes/likes.go
new file mode 100644
index 0000000..949cba2
--- /dev/null
+++ b/modules/likes/likes.go
@@ -0,0 +1,70 @@
+package likes
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"strconv"
+
+	"fagott.pw/charakterin"
+	"fagott.pw/grilist/grilist"
+	"fagott.pw/grilist/modules/lists"
+
+	"github.com/julienschmidt/httprouter"
+)
+
+type Module struct {
+	g     *grilist.Grilist
+	lists *lists.Module
+}
+
+func New() *Module {
+	return &Module{}
+}
+
+func (m *Module) Name() string {
+	return "Likes"
+}
+
+func (m *Module) Init(g *grilist.Grilist) {
+	m.g = g
+	gm, ok := g.Modules["Lists"]
+	if !ok {
+		log.Fatal("tags: lists module not found")
+	}
+	m.lists = gm.(*lists.Module)
+	m.g.Router.GET("/api/likes/count", m.getLikeCount)
+}
+
+func (m *Module) Interface() interface{} {
+	return m
+}
+
+func (m *Module) ProvideDashboardData(user *charakterin.User) []grilist.DashboardCategory {
+	return make([]grilist.DashboardCategory, 0)
+}
+
+func (m *Module) getLikeCount(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
+	params := r.URL.Query()
+
+	contentId, err := strconv.Atoi(params.Get("id"))
+	if err != nil {
+		http.Error(w, "invalid content id", http.StatusBadRequest)
+		return
+	}
+	contentType, err := strconv.Atoi(params.Get("type"))
+	if err != nil {
+		http.Error(w, "invalid content id", http.StatusBadRequest)
+		return
+	}
+
+	var res int
+	if err := m.g.DB.QueryRow(`SELECT COUNT(*) FROM grilist.likes WHERE content = $1 AND type = $2`, contentId, contentType).Scan(&res); err != nil {
+		http.Error(w, "pq error", http.StatusInternalServerError)
+		log.Printf("error getting like count: %s", err)
+		return
+	}
+
+	w.WriteHeader(200)
+	w.Write([]byte(fmt.Sprintf("%d", res)))
+}
diff --git a/views/includes/js.html b/views/includes/js.html
new file mode 100644
index 0000000..784c3b6
--- /dev/null
+++ b/views/includes/js.html
@@ -0,0 +1,3 @@
+{{ define "js" }}
+<script src="/assets/js/{{ . }}.js"></script>
+{{ end }}
diff --git a/views/includes/like.html b/views/includes/like.html
new file mode 100644
index 0000000..226aaff
--- /dev/null
+++ b/views/includes/like.html
@@ -0,0 +1,3 @@
+{{ define "like" }}
+<span class="like-count" content-type={{ .ContentType }} content-id={{ .ContentID }}></span> Likes
+{{ end }}
diff --git a/views/pages/list.html b/views/pages/list.html
index f3c652b..f884a63 100644
--- a/views/pages/list.html
+++ b/views/pages/list.html
@@ -4,6 +4,7 @@
 <html>
 	<head>
 		{{ template "materialize" }}
+		{{ template "js" "like" }}
 		<title>grilist</title>
 		<link rel="stylesheet" href="/assets/css/list.css" />
 		<link rel="stylesheet" href="/assets/css/search.css" />
@@ -24,6 +25,7 @@
 				</div>
 			</div>{{ end }}
 			<blockquote>{{ $list.Description }}</blockquote><br />
+			{{ template "like" (map "ContentType" 0 "ContentID" $list.ID) }}
 			<div class="row">
 				<div class="col s12 {{ if ($user) and eq $user.ID $list.Owner.ID }}l8{{ end }}">
 					<ul id="gril-list" class="gril-list">
-- 
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