<template>
    <div
        ref="rightPanel"
        :class="{ show: show  }"
        class="rightPanel-container"
    >
        <div class="rightPanel-background"/>
        <div class="rightPanel">
            <div
                class="handle-button"
                :style="{ 'top': buttonTop+'px','background-color': theme || '#409EFF' }"
                @click="show=!show"
            >
                <i :class="show?'el-icon-close':'el-icon-setting'"/>
            </div>
            <div class="rightPanel-items">
                <slot/>
            </div>
        </div>
    </div>
</template>

<script lang="ts">
import { Component, Prop, Vue, Watch } from 'vue-property-decorator'
import { addClass, removeClass } from '@/utils'
import { SettingsModule } from '@/store/modules/settings.ts'

@Component({
    name: 'RightPanel'
})
export default class extends Vue {
    @Prop({ default: false }) private clickNotClose!: boolean
    @Prop({ default: 250 }) private buttonTop!: number

    private show = false

    get theme() {
        return SettingsModule.theme
    }

    @Watch('show')
    private onShowChange(value: boolean) {
        if (value && !this.clickNotClose) {
            this.addEventClick()
        }
        if (value) {
            addClass(document.body, 'showRightPanel')
        } else {
            removeClass(document.body, 'showRightPanel')
        }
    }

    mounted() {
        this.insertToBody()
    }

    beforeDestroy() {
        const elx = this.$refs.rightPanel as Element
        elx.remove()
    }

    private addEventClick() {
        window.addEventListener('click', this.closeSidebar)
    }

    private closeSidebar(ev: MouseEvent) {
        const parent = (ev.target as HTMLElement).closest('.rightPanel')
        if (!parent) {
            this.show = false
            window.removeEventListener('click', this.closeSidebar)
        }
    }

    private insertToBody() {
        const elx = this.$refs.rightPanel as Element
        const body = document.querySelector('body')
        if (body) {
            body.insertBefore(elx, body.firstChild)
        }
    }
}
</script>

<style lang="scss">
.showRightPanel {
    overflow: hidden;
    position: relative;
    width: calc(100% - 15px);
}
</style>

<style lang="scss" scoped>
.rightPanel-background {
    position: fixed;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity .3s cubic-bezier(.7, .3, .1, 1);
    background: rgba(0, 0, 0, .2);
    z-index: -1;
}

.rightPanel {
    width: 100%;
    max-width: 260px;
    height: 100vh;
    position: fixed;
    top: 0;
    right: 0;
    box-shadow: 0px 0px 15px 0px rgba(0, 0, 0, .05);
    transition: all .25s cubic-bezier(.7, .3, .1, 1);
    transform: translate(100%);
    background: #fff;
    z-index: 40000;
}

.show {
    transition: all .3s cubic-bezier(.7, .3, .1, 1);

    .rightPanel-background {
        z-index: 20000;
        opacity: 1;
        width: 100%;
        height: 100%;
    }

    .rightPanel {
        transform: translate(0);
    }
}

.handle-button {
    width: 48px;
    height: 48px;
    position: absolute;
    left: -48px;
    text-align: center;
    font-size: 24px;
    border-radius: 6px 0 0 6px !important;
    z-index: 0;
    cursor: pointer;
    pointer-events: auto;
    color: #fff;
    line-height: 48px;

    i {
        font-size: 24px;
        line-height: 48px;
    }
}
</style>
