<template lang="html">
  <ul class="events" :class="settings.size">
    <li v-for="item in filtered" :key="item.key">
      <span class="date" v-if="settings.showTimestamp">{{ item.date | relativeTime }}</span>
      <span class="text" v-html="colorize(item.message)"></span>
    </li>
  </ul>
</template>

<script>
import { mapActions, mapGetters, mapState } from "vuex";
import { formatRelative } from "date-fns";
import AnsiConvertor from "ansi-to-html";

const ansiConvertor = new AnsiConvertor({ escapeXML: true });

export default {
  props: ["messages"],
  name: "LogViewer",
  components: {},
  data() {
    return {
      showSearch: false,
    };
  },
  methods: {
    colorize: function (value) {
      return ansiConvertor.toHtml(value).replace("&lt;mark&gt;", "<mark>").replace("&lt;/mark&gt;", "</mark>");
    },
  },
  computed: {
    ...mapState(["searchFilter", "settings"]),
    filtered() {
      const { searchFilter, messages } = this;
      if (searchFilter) {
        const isSmartCase = searchFilter === searchFilter.toLowerCase();
        try {
          const regex = isSmartCase ? new RegExp(searchFilter, "i") : new RegExp(searchFilter);
          return messages
            .filter((d) => d.message.match(regex))
            .map((d) => ({
              ...d,
              message: d.message.replace(regex, "<mark>$&</mark>"),
            }));
        } catch (e) {
          if (e instanceof SyntaxError) {
            console.info(`Ignoring SytaxError from search.`, e);
            return messages;
          }
          throw e;
        }
      }
      return messages;
    },
  },
  filters: {
    relativeTime(date) {
      return formatRelative(date, new Date());
    },
  },
};
</script>
<style scoped lang="scss">
.events {
  padding: 10px;
  font-family: "Roboto Mono", monaco, monospace;

  & > li {
    word-wrap: break-word;
    line-height: 130%;
    &:last-child {
      scroll-snap-align: end;
      scroll-margin-block-end: 5rem;
    }
  }

  &.small {
    font-size: 60%;
  }

  &.medium {
    font-size: 80%;
  }

  &.large {
    font-size: 120%;
  }
}

.date {
  background-color: #262626;
  color: #258ccd;
}

.text {
  white-space: pre-wrap;
}

::v-deep mark {
  border-radius: 2px;
  background-color: #ffdd57;
  animation: pops 0.2s ease-out;
  display: inline-block;
}

@keyframes pops {
  0% {
    transform: scale(1.5);
  }
  100% {
    transform: scale(1.05);
  }
}
</style>
