<!-- The <perf-commit-sk> custom element declaration.

  Displays a single commit in a uniform manner.

  Attributes:
    cid - The commit id, either the Git commit hash or trybot patch.
    source - The Git branch or trybot issue id.
    commit - The serialized perftracedb.CommitIDLong that corresponds to the given commit id and source.

  Events:
    None.

  Methods:
    asString - Returns a text description of the commit.

  Mailbox:
    commits - Listens on the sk.Mailbox name of 'commits' to listen for the
      data to populate the element. The mailbox data needs to be a serialized
      slice of []*types.Commit.

          [
            {
               ts: 14070203,
               id: "123abc",
               source: "master",
               author: "name@example.org",
               desc: "Adds short commits."
            },
          ]

-->

<dom-module id="perf-commit-sk">
  <style type="text/css" media="screen">
    pre,
    span {
      margin: 0;
    }

    a {
      color: #FF7F00;
      font-weight: bold;
    }
  </style>
  <template>
    <pre><span>[[_trimPad(commit.author)]]</span> <span>[[_humanize(commit.ts)]]</span> <span><a href$="[[_commitHref(commit)]]">[[_name(commit.id, commit.source)]]</a></span> <span>[[_trimNewline(commit.desc)]]</span></pre>
  </template>
</dom-module>

<script>
  Polymer({
    is: "perf-commit-sk",

    properties: {
      commit: {
        type: Object,
        value: null,
      }
    },

    asString: function() {
      if (!this.commit) {
        return "Commit not found.";
      }
      return this._trimPad(this.commit.author) + " " +
        this._humanize(this.commit.ts) + " " +
        this.commit.id + " " +
        this.commit.source + " " +
        this._trimNewline(this.commit.desc);
    },

    _trimPad: function(s) {
      if (!this.commit) {
        return "Unknown commit."
      }
      s = s.slice(0, 30);
      while (s.length < 30) {
        s = s + " ";
      }
      return s;
    },

    _trimNewline: function(s) {
      if (!s) {
        return "";
      }
      return this._trimPad(s.split("\n")[0]);
    },

    _humanize: function (s) {
      if (!this.commit) {
        return "";
      }
      return sk.human.diffDate(s * 1000);
    },

    _commitHref: function (c) {
      if (!c) {
        return "";
      }
      if (c.source.indexOf("https://codereview.chromium.org") == -1) {
        return 'https://skia.googlesource.com/skia/+/' + c.id;
      } else {
        return c.source;
      }
    },

    _trunc: function (s) {
      if (!this.commit) {
        return "";
      }
      return s.slice(0, 7);
    },

    _name: function (id, source) {
      if (!this.commit) {
        return "";
      }
      if (source.indexOf("https://codereview.chromium.org") == -1) {
        return this._trunc(id) + " (" + source + ")";
      } else {
        return source + " Patch: " + this._trunc(id);
      }
    },
  });
</script>