<template>
    <view class="app-page bg-gradient-blue-lighten-b" :class="calcPageClass" :style="[calcPageStyle]">
        <view v-if="calcBackgroundType!=='video'" class="tn-satr">
            <view class="sky"></view>
            <view class="stars">
                <view class="falling-stars">
                    <view class="star-fall"></view>
                    <view class="star-fall"></view>
                    <view class="star-fall"></view>
                    <view class="star-fall"></view>
                </view>
                <view class="small-stars">
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                </view>
                <view class="medium-stars">
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                    <view class="star"></view>
                </view>
            </view>
        </view>

        <video v-else class="video-bg" :object-fit="startConfig.bgVideoFit" :src="startConfig.bgVideo" :loop="true" :autoplay="true"
               :muted="true" :controls="false" :show-fullscreen-btn="false" :show-play-btn="false"
               :show-center-play-btn="false" :show-loading="false" :enable-progress-gesture="false"
               :show-progress="false"></video>

        <cover-view v-if="startConfig.title || startConfig.logo" class="title-container">

            <cover-view v-if="startConfig.logo" class="app-logo">
                <view class="app-logo-border">
                    <cover-image class="app-logo-image" :src="$utils.checkImageUrl(startConfig.logo)"
                                 mode="aspectFill"></cover-image>
                </view>
            </cover-view>

            <cover-view v-if="startConfig.title" class="app-title" :style="startConfig.titleStyle">
                「 {{ startConfig.title }} 」
            </cover-view>
        </cover-view>

        <cover-view v-if="startConfig.desc1 || startConfig.desc2" class="bottom-container">
            <cover-view class="text-align-center" :style="startConfig.descStyle"
                        style="color:white;padding: 60vh 0 0 0;">
                <cover-view class="" style="font-size: 44rpx;" v-if="startConfig.desc1">{{ startConfig.desc1 }}
                </cover-view>
                <cover-view class="mt-30 text-size-m" v-if="startConfig.desc2">{{ startConfig.desc2 }}</cover-view>
            </cover-view>

            <cover-view class="" style="padding: 120rpx 200rpx;z-index: 999;position: relative;">
                <cover-view class="start-btn" :class="[startConfig.btnClass]" @click="fnStart()"
                            :style="startConfig.btnStyle">{{ startConfig.btnText || '开始体验' }}
                </cover-view>
            </cover-view>
        </cover-view>
        <!-- 波浪效果 -->
        <wave v-if="startConfig.useWave"></wave>
    </view>
</template>

<script>
import wave from '@/components/wave/wave.vue';

export default {
    components: {
        wave
    },
    computed: {
        startConfig() {
            return this.$tm.vx.getters().getConfigs.appConfig.startConfig;
        },
        calcBackgroundType() {
            return this.startConfig.backgroundType;
        },
        calcPageClass() {
            if (this.calcBackgroundType === 'color') {
                return [this.startConfig.bg]
            }
            return []
        },
        calcPageStyle() {
            if (this.calcBackgroundType === 'color') {
                return {}
            }
            if (this.calcBackgroundType === 'image') {
                return {
                    backgroundImage: `url(${this.$utils.checkImageUrl(this.startConfig.bgImage)})!important`,
                    backgroundSize: this.startConfig.bgImageFit
                }
            }
            if (this.calcBackgroundType === 'video') {
                return {
                    background: '#ffffff'
                }
            }
            return {};
        }
    },
    methods: {
        fnStart() {
            uni.switchTab({
                url: '/pages/tabbar/home/home',
                success: () => {
                    uni.setStorageSync('APP_HAS_STARTED', true);
                }
            });
        }
    }
};
</script>

<style lang="scss" scoped>
.app-page {
    position: relative;
    width: 100vw;
    height: 100vh;
    background-size: cover;
    background-repeat: no-repeat;
}

.start-btn {
    box-sizing: border-box;
    background-color: transparent;
    padding: 16rpx 50rpx;
    border-radius: 50rpx;
    border: 2rpx solid #ffffff;
    color: #ffffff;
    text-align: center;
    font-size: 28rpx;
}

.bottom-container {
    position: absolute;
    bottom: 50rpx;
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
}

.video-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
}

.title-container {
    width: 100vw;
    position: absolute;
    top: 20vh;
    left: 0;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.app-logo {
    width: 200rpx;
    height: 200rpx;

    &-border {
        width: 100%;
        height: 100%;
        box-sizing: border-box;
        border: 8rpx solid rgba(255, 255, 255, 0.35);
        border-radius: 50%;
        overflow: hidden;
    }

    &-image {
        width: 100%;
        height: 100%;
        border-radius: 50%;
    }
}

.app-title {
    color: #ffffff;
    margin-top: 26rpx;
    font-size: 36rpx;
    font-weight: 600;
    text-align: center;
}


.tn-satr {
    position: fixed;
    width: 100%;
    height: 600px;
    overflow: hidden;
    flex-shrink: 0;
    z-index: 998;
}

.stars {
    position: absolute;
    z-index: 1;
    width: 100%;
    height: 400px;
}

.star {
    border-radius: 50%;
    background: #ffffff;
    box-shadow: 0 0 6px 0 rgba(255, 255, 255, 0.8);
}

.small-stars .star {
    position: absolute;
    width: 3px;
    height: 3px;
}

.small-stars .star:nth-child(2n) {
    opacity: 0;
    -webkit-animation: star-blink 1.2s linear infinite alternate;
    animation: star-blink 1.2s linear infinite alternate;
}

.small-stars .star:nth-child(1) {
    left: 40px;
    bottom: 50px;
}

.small-stars .star:nth-child(2) {
    left: 200px;
    bottom: 40px;
}

.small-stars .star:nth-child(3) {
    left: 60px;
    bottom: 120px;
}

.small-stars .star:nth-child(4) {
    left: 140px;
    bottom: 250px;
}

.small-stars .star:nth-child(5) {
    left: 400px;
    bottom: 300px;
}

.small-stars .star:nth-child(6) {
    left: 170px;
    bottom: 80px;
}

.small-stars .star:nth-child(7) {
    left: 200px;
    bottom: 360px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.small-stars .star:nth-child(8) {
    left: 250px;
    bottom: 320px;
}

.small-stars .star:nth-child(9) {
    left: 300px;
    bottom: 340px;
}

.small-stars .star:nth-child(10) {
    left: 130px;
    bottom: 320px;
    -webkit-animation-delay: 0.5s;
    animation-delay: 0.5s;
}

.small-stars .star:nth-child(11) {
    left: 230px;
    bottom: 330px;
    -webkit-animation-delay: 7s;
    animation-delay: 7s;
}

.small-stars .star:nth-child(12) {
    left: 300px;
    bottom: 360px;
    -webkit-animation-delay: 0.3s;
    animation-delay: 0.3s;
}

@-webkit-keyframes star-blink {
    50% {
        width: 3px;
        height: 3px;
        opacity: 1;
    }
}

@keyframes star-blink {
    50% {
        width: 3px;
        height: 3px;
        opacity: 1;
    }
}

.medium-stars .star {
    position: absolute;
    width: 3px;
    height: 3px;
    opacity: 0;
    -webkit-animation: star-blink 1.2s ease-in infinite alternate;
    animation: star-blink 1.2s ease-in infinite alternate;
}

.medium-stars .star:nth-child(1) {
    left: 300px;
    bottom: 50px;
}

.medium-stars .star:nth-child(2) {
    left: 400px;
    bottom: 40px;
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
}

.medium-stars .star:nth-child(3) {
    left: 330px;
    bottom: 300px;
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

.medium-stars .star:nth-child(4) {
    left: 460px;
    bottom: 300px;
    -webkit-animation-delay: 0.9s;
    animation-delay: 0.9s;
}

.medium-stars .star:nth-child(5) {
    left: 300px;
    bottom: 150px;
    -webkit-animation-delay: 1.2s;
    animation-delay: 1.2s;
}

.medium-stars .star:nth-child(6) {
    left: 440px;
    bottom: 120px;
    -webkit-animation-delay: 1s;
    animation-delay: 1s;
}

.medium-stars .star:nth-child(7) {
    left: 200px;
    bottom: 140px;
    -webkit-animation-delay: 0.8s;
    animation-delay: 0.8s;
}

.medium-stars .star:nth-child(8) {
    left: 30px;
    bottom: 480px;
    -webkit-animation-delay: 0.3s;
    animation-delay: 0.3s;
}

.medium-stars .star:nth-child(9) {
    left: 460px;
    bottom: 400px;
    -webkit-animation-delay: 1.2s;
    animation-delay: 1.2s;
}

.medium-stars .star:nth-child(10) {
    left: 150px;
    bottom: 10px;
    -webkit-animation-delay: 1s;
    animation-delay: 1s;
}

.medium-stars .star:nth-child(11) {
    left: 420px;
    bottom: 450px;
    -webkit-animation-delay: 1.2s;
    animation-delay: 1.2s;
}

.medium-stars .star:nth-child(12) {
    left: 340px;
    bottom: 180px;
    -webkit-animation-delay: 1.1s;
    animation-delay: 1.1s;
}

@keyframes star-blink {
    50% {
        width: 4px;
        height: 4px;
        opacity: 1;
    }
}

.star-fall {
    position: relative;
    border-radius: 2px;
    width: 80px;
    height: 2px;
    overflow: hidden;
    -webkit-transform: rotate(-20deg);
    transform: rotate(-20deg);
}

.star-fall:after {
    content: '';
    position: absolute;
    width: 50px;
    height: 2px;
    background: -webkit-gradient(linear, right top, left top, from(rgba(0, 0, 0, 0)), to(rgba(255, 255, 255, 0.4)));
    background: linear-gradient(to left, rgba(0, 0, 0, 0) 0%, rgba(255, 255, 255, 0.4) 100%);
    left: 100%;
    -webkit-animation: star-fall 3.6s linear infinite;
    animation: star-fall 3.6s linear infinite;
}

.star-fall:nth-child(1) {
    left: 80px;
    bottom: -100px;
}

.star-fall:nth-child(1):after {
    -webkit-animation-delay: 2.4s;
    animation-delay: 2.4s;
}

.star-fall:nth-child(2) {
    left: 200px;
    bottom: -200px;
}

.star-fall:nth-child(2):after {
    -webkit-animation-delay: 2s;
    animation-delay: 2s;
}

.star-fall:nth-child(3) {
    left: 430px;
    bottom: -50px;
}

.star-fall:nth-child(3):after {
    -webkit-animation-delay: 3.6s;
    animation-delay: 3.6s;
}

.star-fall:nth-child(4) {
    left: 400px;
    bottom: 100px;
}

.star-fall:nth-child(4):after {
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
}

@-webkit-keyframes star-fall {
    20% {
        left: -100%;
    }

    100% {
        left: -100%;
    }
}

@keyframes star-fall {
    20% {
        left: -100%;
    }

    100% {
        left: -100%;
    }
}
</style>
