<script src="../../dist/vue.global.js"></script>

<div id="demo">
  <h1>Latest Vue.js Commits</h1>
  <template v-for="branch in branches">
    <input type="radio"
      :id="branch"
      :value="branch"
      name="branch"
      v-model="currentBranch">
    <label :for="branch">{{ branch }}</label>
  </template>
  <p>vuejs/vue@{{ currentBranch }}</p>
  <ul>
    <li v-for="{ html_url, sha, author, commit } in commits">
      <a :href="html_url" target="_blank" class="commit">{{ sha.slice(0, 7) }}</a>
      - <span class="message">{{ truncate(commit.message) }}</span><br>
      by <span class="author"><a :href="author.html_url" target="_blank">{{ commit.author.name }}</a></span>
      at <span class="date">{{ formatDate(commit.author.date) }}</span>
    </li>
  </ul>
</div>

<script>
const { createApp, ref, watchEffect } = Vue
const API_URL = `https://api.github.com/repos/vuejs/core/commits?per_page=3&sha=`

const truncate = v => {
  const newline = v.indexOf('\n')
  return newline > 0 ? v.slice(0, newline) : v
}

const formatDate = v => v.replace(/T|Z/g, ' ')

createApp({
  setup() {
    const currentBranch = ref('master')
    const commits = ref(null)

    watchEffect(() => {
      fetch(`${API_URL}${currentBranch.value}`)
        .then(res => res.json())
        .then(data => {
          console.log(data)
          commits.value = data
        })
    })

    return {
      branches: ['master', 'sync'],
      currentBranch,
      commits,
      truncate,
      formatDate
    }
  }
}).mount('#demo')
</script>

<style>
  #demo {
    font-family: 'Helvetica', Arial, sans-serif;
  }
  a {
    text-decoration: none;
    color: #f66;
  }
  li {
    line-height: 1.5em;
    margin-bottom: 20px;
  }
  .author, .date {
    font-weight: bold;
  }
</style>
