Add minimal frontend

backend/src/http.js

@@ -14,14 +14,14 @@ export default (sessions) => {
     cors(app)
   }
 
-  app.get('/containers', async (req, res) => {
+  app.get('/api/containers', async (req, res) => {
     return res.json(
       (await runningContainers())
         .map(c => ({ id: c.Id, image: c.Image, labels: c.Labels }))
     )
   })
 
-  app.post('/containers', async (req, res) => {
+  app.post('/api/containers', async (req, res) => {
     if ((req.body.image && typeof req.body.image !== 'string') || (req.body.cmd && Array.isArray(req.body.cmd))) {
       return res.send('invalid arguments').status(401)
     }
@@ -31,7 +31,7 @@ export default (sessions) => {
     res.send(container)
   })
 
-  app.post('/containers/:container/:session/resize', (req, res) => {
+  app.post('/api/containers/:container/sessions/:session/resize', (req, res) => {
     const session = sessions[req.params.session]
 
     if (!session || session.container !== req.params.container) {

frontend/package.json

@@ -10,6 +10,7 @@
   "dependencies": {
     "core-js": "^3.6.5",
     "vue": "^3.0.0",
+    "vue-router": "^4.0.0-0",
     "xterm": "^4.14.1",
     "xterm-addon-attach": "^0.6.0",
     "xterm-addon-fit": "^0.5.0"
@@ -17,6 +18,7 @@
   "devDependencies": {
     "@vue/cli-plugin-babel": "~4.5.0",
     "@vue/cli-plugin-eslint": "~4.5.0",
+    "@vue/cli-plugin-router": "~4.5.0",
     "@vue/cli-service": "~4.5.0",
     "@vue/compiler-sfc": "^3.0.0",
     "@vue/eslint-config-standard": "^5.1.2",

frontend/src/App.vue

@@ -1,14 +1,29 @@
 <template>
-  <WsTerm container="fc4854871b5d9ad97f8f8c5daec81e5452bd1bb59fb50ea5cbcdac6787600d53" session="random-string"/>
+  <div id="nav">
+    <router-link to="/">Home</router-link> |
+  </div>
+  <router-view/>
 </template>
 
-<script>
-import WsTerm from './components/WsTerm.vue'
+<style>
+#app {
+  font-family: Avenir, Helvetica, Arial, sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  text-align: center;
+  color: #2c3e50;
+}
 
-export default {
-  name: 'App',
-  components: {
-    WsTerm
+#nav {
+  padding: 30px;
 }
+
+#nav a {
+  font-weight: bold;
+  color: #2c3e50;
 }
-</script>
+
+#nav a.router-link-exact-active {
+  color: #42b983;
+}
+</style>

frontend/src/components/ContainerList.vue

@@ -0,0 +1,23 @@
+<template>
+  <div>
+    <h2>Containers</h2>
+    <ul>
+      <li v-for="container in containers" :key="container.id">
+        {{ container.id.substr(0, 8) }}
+
+        <router-link :to="{ name: 'new-session', params: { container: container.id } }">
+          Start session
+        </router-link>
+      </li>
+    </ul>
+  </div>
+</template>
+
+<script>
+export default {
+  name: 'ContainerList',
+  props: {
+    containers: Array
+  }
+}
+</script>

frontend/src/components/WsTerm.vue

@@ -8,6 +8,7 @@ import { Terminal } from 'xterm'
 import { AttachAddon } from 'xterm-addon-attach'
 import { onMounted, ref } from 'vue'
 import { FitAddon } from 'xterm-addon-fit'
+import { resizeTerminal } from '../lib/api.js'
 
 export default {
   name: 'WsTerm',
@@ -31,14 +32,7 @@ export default {
     const resize = () => {
       fitAddon.fit()
 
-      fetch(`http://localhost:1234/containers/${props.container}/${props.session}/resize`, {
-        method: 'post',
-        headers: { 'content-type': 'application/json' },
-        body: JSON.stringify({
-          cols: term.cols,
-          rows: term.rows
-        })
-      })
+      resizeTerminal(props.container, props.session, term.cols, term.rows)
     }
 
     onMounted(() => {

frontend/src/lib/api.js

@@ -0,0 +1,23 @@
+const API_URL = 'http://localhost:1234'
+
+export async function getJson (url) {
+  return (await fetch(url)).json()
+}
+
+export function postJson (url, data) {
+  return fetch(url, {
+    method: 'post',
+    headers: { 'content-type': 'application/json' },
+    body: JSON.stringify(data)
+  })
+}
+
+export function getContainers () {
+  return getJson(`${API_URL}/api/containers`)
+}
+
+export function resizeTerminal (containerId, sessionId, cols, rows) {
+  return postJson(`${API_URL}/api/containers/${containerId}/sessions/${sessionId}/resize`, {
+    cols, rows
+  })
+}

frontend/src/lib/helpers.js

@@ -0,0 +1,8 @@
+const randomChars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
+
+export function randomString (length = 20) {
+  const values = new Uint32Array(length)
+  window.crypto.getRandomValues(values)
+
+  return Array.from(values.map(v => v % randomChars.length)).map(c => randomChars[c]).join('')
+}

frontend/src/main.js

@@ -1,4 +1,7 @@
 import { createApp } from 'vue'
 import App from './App.vue'
+import router from './router'
 
-createApp(App).mount('#app')
+createApp(App)
+  .use(router)
+  .mount('#app')

frontend/src/router/index.js

@@ -0,0 +1,38 @@
+import { createRouter, createWebHistory } from 'vue-router'
+import Home from '../views/Dashboard.vue'
+import { randomString } from '../lib/helpers'
+
+const routes = [
+  {
+    path: '/',
+    name: 'home',
+    component: Home
+  },
+  {
+    path: '/container/:container/session',
+    name: 'new-session',
+    redirect: to => {
+      const container = to.params.container
+      let session = localStorage.getItem(container)
+
+      if (!session) {
+        session = randomString()
+        localStorage.setItem(container, session)
+      }
+
+      return { name: 'session', params: { container, session } }
+    }
+  },
+  {
+    path: '/container/:container/session/:session',
+    name: 'session',
+    component: () => import('../views/Session.vue')
+  }
+]
+
+const router = createRouter({
+  history: createWebHistory(process.env.BASE_URL),
+  routes
+})
+
+export default router

frontend/src/views/Dashboard.vue

@@ -0,0 +1,28 @@
+<template>
+  <div class="home">
+    <ContainerList :containers="containers"/>
+  </div>
+</template>
+
+<script>
+import ContainerList from '../components/ContainerList'
+import { getContainers } from '../lib/api'
+import { ref } from 'vue'
+
+export default {
+  name: 'Dashboard',
+  components: { ContainerList },
+  setup () {
+    const containers = ref([])
+
+    getContainers()
+      .then(c => {
+        containers.value = c
+      })
+
+    return {
+      containers: containers
+    }
+  }
+}
+</script>

frontend/src/views/Session.vue

@@ -0,0 +1,23 @@
+<template>
+  <div class="about">
+    <WsTerm :container="container" :session="session"/>
+  </div>
+</template>
+
+<script>
+import WsTerm from '../components/WsTerm'
+import { useRoute } from 'vue-router'
+
+export default {
+  components: { WsTerm },
+
+  setup () {
+    const route = useRoute()
+
+    return {
+      container: route.params.container,
+      session: route.params.session
+    }
+  }
+}
+</script>

frontend/yarn.lock

@@ -1296,7 +1296,7 @@
     webpack "^4.0.0"
     yorkie "^2.0.0"
 
-"@vue/cli-plugin-router@^4.5.15":
+"@vue/cli-plugin-router@^4.5.15", "@vue/cli-plugin-router@~4.5.0":
   version "4.5.15"
   resolved "https://registry.yarnpkg.com/@vue/cli-plugin-router/-/cli-plugin-router-4.5.15.tgz#1e75c8c89df42c694f143b9f1028de3cf5d61e1e"
   integrity sha512-q7Y6kP9b3k55Ca2j59xJ7XPA6x+iSRB+N4ac0ZbcL1TbInVQ4j5wCzyE+uqid40hLy4fUdlpl4X9fHJEwuVxPA==
@@ -1447,6 +1447,11 @@
   optionalDependencies:
     prettier "^1.18.2 || ^2.0.0"
 
+"@vue/devtools-api@^6.0.0-beta.18":
+  version "6.0.0-beta.19"
+  resolved "https://registry.yarnpkg.com/@vue/devtools-api/-/devtools-api-6.0.0-beta.19.tgz#f8e88059daa424515992426a0c7ea5cde07e99bf"
+  integrity sha512-ObzQhgkoVeoyKv+e8+tB/jQBL2smtk/NmC9OmFK8UqdDpoOdv/Kf9pyDWL+IFyM7qLD2C75rszJujvGSPSpGlw==
+
 "@vue/eslint-config-standard@^5.1.2":
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/@vue/eslint-config-standard/-/eslint-config-standard-5.1.2.tgz#c5d55af894a3ae23b65b1af4a425777ac0170b42"
@@ -8546,6 +8551,13 @@ vue-loader@^15.9.2:
     vue-hot-reload-api "^2.3.0"
     vue-style-loader "^4.1.0"
 
+vue-router@^4.0.0-0:
+  version "4.0.12"
+  resolved "https://registry.yarnpkg.com/vue-router/-/vue-router-4.0.12.tgz#8dc792cddf5bb1abcc3908f9064136de7e13c460"
+  integrity sha512-CPXvfqe+mZLB1kBWssssTiWg4EQERyqJZes7USiqfW9B5N2x+nHlnsM1D3b5CaJ6qgCvMmYJnz+G0iWjNCvXrg==
+  dependencies:
+    "@vue/devtools-api" "^6.0.0-beta.18"
+
 vue-style-loader@^4.1.0, vue-style-loader@^4.1.2:
   version "4.1.3"
   resolved "https://registry.yarnpkg.com/vue-style-loader/-/vue-style-loader-4.1.3.tgz#6d55863a51fa757ab24e89d9371465072aa7bc35"