<template>
  <transition name="func-loading">
    <div v-show="showBox || showOuter" class="loading-overlay">
      <transition name="func-loading-inner">
        <div v-show="showInner" class="loading-container">
          <div class="loading-box">
            <div class="loading-title">
              <span>{{ data.title }}</span>
              <span class="loading-circle" v-show="!empty" />
            </div>
            <div class="loading-subtitle">{{ data.subtitle }}</div>
            <div class="loading-img">
              <img v-if="!empty" src="/source/UI/loading.webp" alt="loading" />
              <img v-else src="/source/UI/empty.webp" alt="empty" />
            </div>
          </div>
        </div>
      </transition>
    </div>
  </transition>
</template>
<script lang="ts" setup>
import { reactive, ref, watch, onMounted, toRaw } from "vue";

import { LoadingParams } from "./loading.js";

const showBox = ref<boolean>(false);
const showOuter = ref<boolean>(false);
const showInner = ref<boolean>(false);

const props = defineProps<LoadingParams>();
const data = reactive<LoadingParams>(toRaw(props));

watch(
  () => showBox.value,
  () => {
    if (showBox.value) {
      showOuter.value = true;
      setTimeout(() => (showInner.value = true), 100);
      return;
    }
    setTimeout(() => (showInner.value = false), 100);
    setTimeout(() => (showOuter.value = false), 300);
  },
);

onMounted(() => displayBox(props));

function displayBox(params: LoadingParams): void {
  if (params.show != showBox.value && !params.show) {
    showBox.value = false;
    setTimeout(() => {
      data.title = "";
      data.subtitle = "";
      data.empty = false;
    }, 500);
    return;
  }
  data.title = params.title;
  data.subtitle = params.subtitle;
  data.empty = params.empty;
  showBox.value = true;
}

defineExpose({ displayBox });
</script>
<style lang="css" scoped>
.func-loading-outer-enter-active,
.func-loading-outer-leave-active,
.func-loading-inner-enter-active {
  transition: all 0.3s;
}

.func-loading-inner-leave-active {
  transition: all 0.5s ease-in-out;
}

.func-loading-inner-enter-from {
  opacity: 0;
  transform: scale(1.5);
}

.func-loading-inner-enter-to,
.func-loading-inner-leave-from {
  opacity: 1;
  transform: scale(1);
}

.func-loading-outer-enter-to,
.func-loading-outer-leave-from {
  opacity: 1;
}

.func-loading-outer-enter-from,
.func-loading-outer-leave-to {
  opacity: 0;
}

.func-loading-inner-leave-to {
  opacity: 0;
  transform: scale(0);
}

.loading-overlay {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(20px);
  background: rgb(0 0 0 / 50%);
}

.loading-container {
  display: flex;
  min-width: 800px;
  min-height: 300px;
  padding: 15px;
  border-radius: 15px;
  background: rgb(255 255 255 / 5%);
  box-shadow: 0 0 10px rgb(0 0 0 / 50%);
}

.loading-box {
  display: flex;
  width: 100%;
  box-sizing: content-box;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px;
  border: #f4d8a8 1px solid;
  border-radius: 5px;
  color: #f4d8a8;
}

.loading-title {
  display: flex;
  width: 100%;
  height: 50px;
  align-items: center;
  justify-content: center;
  column-gap: 5px;
  font-family: var(--font-title);
  font-size: 2rem;
  font-weight: 600;
}

.loading-circle {
  width: 40px;
  height: 40px;
  border: 5px solid #f4d8a8;
  border-radius: 100%;
  border-top-color: transparent;
  animation: circle infinite 0.75s linear;
}

@keyframes circle {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.loading-subtitle {
  width: 100%;
  height: 25px;
  font-size: 1rem;
  text-align: center;
}

.loading-img {
  display: flex;
  width: 100%;
  height: 200px;
  align-items: center;
  justify-content: center;

  img {
    max-width: 100%;
    max-height: 200px;
    border-radius: 5px;
  }
}
</style>
