<template>
  <div class="image-viewer"
       :class="{ 'is-visible': isVisible }">
    <div class="viewer-background"
         :style="backgroundStyle">
    </div>
    <div class="image-container">
      <img class="image"
           :src="imageUrl">
    </div>
    <div class="close-viewer mobile-only"
         @click="$emit('close')">
      X
    </div>
    <ThumbNav v-if="hasPrev"
              class="thumb-nav thumb-nav--left mobile-only"
              direction="left"
              @navClick="$emit('clickPrev')"/>
    <ThumbNav v-if="hasNext"
              class="thumb-nav thumb-nav--right mobile-only"
              direction="right"
              @navClick="$emit('clickNext')"/>
  </div>
</template>

<script>
import ThumbNav from '@/components/ThumbNav'

export default {
  components: {
    ThumbNav
  },
  props: {
    isVisible: {
      type: Boolean,
      required: true
    },
    imageUrl: {
      type: String,
      required: false,
      default () {
        return ''
      }
    },
    hasNext: {
      type: Boolean,
      required: true
    },
    hasPrev: {
      type: Boolean,
      required: true
    }
  },

  data () {
    return {
    }
  },

  computed: {
    backgroundStyle () {
      return {
        backgroundImage: 'url(' + this.imageUrl + ')'
      }
    }
  },

  methods: {
  }
}
</script>

<style lang="scss" scoped>
.image-viewer {
  background-color: #222;
}

.image-container {
  background-size: contain;
  background-repeat: no-repeat;
  background-color: transparent;
}

.image {
  width: auto;
  height: auto;
  max-height: 100%;
  max-width: 100%;
  margin: 0 auto;
  top: 50%;
  transform: translateY(-50%);
}

@media (max-width: $bp__layout) {
  .close-viewer {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 10em;
    cursor: pointer;
  }

  .image-viewer {
    z-index: 50;
    position: relative;

    transition: opacity 1s; //TEMP
    opacity: 0;
    pointer-events: none;

    &.is-visible {
      opacity: 1;
      pointer-events: auto;
    }
  }

  .image-container {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-position: center center;
  }

  .thumb-nav {
    position: absolute;
    width: 50%;
    height: 100%;
    top: 0;

    &--left {
      left: 0;
    }

    &--right {
      right: 0;
    }
  }
}

@media (min-width: $bp__layout) {
  .mobile-only {
    display: none;
  }

  .image-viewer {
    padding: 1rem 1rem 1rem 4rem;
  }

  .image-container {
    position: absolute;
    top: 8px;
    left: calc(3rem + 8px);
    right: 20rem;
    bottom: 8px;
    background-position: top center;
  }

  .viewer-background {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background-size: 100% 100%;
    background-position: center center;
    filter: blur(100px);
    opacity: .3;
  }
}
</style>
