<template>
	<view class="content" v-if="loaded">
		<view class="code">
			<swiper class="code-swiper" previous-margin="70rpx" next-margin="70rpx" @change="swiperChange">
				<swiper-item v-for="(item, index) in inviteData" :key="index">
					<view class="code-item">
						<view class="code-lay" @click="coverCode"></view>
						<image class="code-back-image" :src="item.cover" mode="aspectFill"></image>
						<view class="codDate">
						    <view class="codDate-year">
						        {{item.date.solar.month}}
						    </view>
						    <view class="codDate-day">
						        {{item.date.solar.day}}
						    </view>
						    <view class="codDate-lunar">
						        {{item.date.lunar}}
						    </view>
						</view>
						<view class="codeCont">
						    <image class="codeCont-avatar" :src="item.user_info.avatar ? item.user_info.avatar : '/static/user/user-portrait.png'" mode="aspectFill"></image>
						    <view class="codeCont-text">
						        <view class="codeCont-name">
						            {{item.user_info.nickname}}
						        </view>
						        <view class="codeCont-number">
						            邀请码：{{item.invite}}
						        </view>
						    </view>
                            <image class="codeCont-img" :src="item.code" mode="widthFix"></image>
						</view>
					</view>
				</swiper-item>
			</swiper>
		</view>
		<view class="footer">
			<view class="hith">朋友通过你的邀请注册成功后，将与您绑定好友关系通过成为平台用户，你都可以获得积分奖励。</view>
			<view class="number">
				<view class="title">邀请码 : {{inviteData[0].invite}}</view>
                <view class="value" @click="copyCenter(inviteData[0].invite)">复制邀请码</view>
			</view>
			<!-- <view class="button" @click="coverCode">生成分享海报</view> -->
		</view>
        <canvas class="my-canvas" canvas-id="myCanvas" id="myCanvas"/>
        <view v-if="posterShow">
            <view class="posterBack"></view>
            <view class="poster">
                <view class="poster-img">
                    <image class="img" :src="posterImg" mode="widthFix" />
                </view>
                <view class="poster-btn">
                    <view class="operate operate-cancel" @click="saveImage">保存图片至相册</view>
                    <view class="operate" @tap="posterShow = false">取消</view>
                </view>
            </view>
        </view>
	</view>
</template>

<script>
    import { userInvite } from '@/apis/interfaces/user'
    import { saveImageToPhotosAlbum, showToast, downloadFile } from '@/uni_modules/sakura-canvas/js_sdk/util'
    import Draw from '@/uni_modules/sakura-canvas/js_sdk/draw'
    let draw = null
	export default {
		data() {
			return {
                Popinvite : {}, //下载海报数据
				inviteData: [] ,//二维码信息
                codeIndex : 0,
                posterImg : '',
                defaultImg: '',
                loaded    : false,
                posterShow: false
			};
		},
        onLoad() {
            // 获取二维码
            this.inviteInfo()
        },
        async created() {},
        methods:{
            // 二维码
            inviteInfo(){
                userInvite().then(res => {
                    this.loaded = true
                    this.inviteData = res
                }).catch(err => {
                    uni.showToast({
                        icon: 'none',
                        title: err.message
                    })
                })
            },
            
			// 生成海报
			async coverCode(){
                let img     = this.inviteData[this.codeIndex].code
                let back    = this.inviteData[this.codeIndex].cover
                let name    = this.inviteData[this.codeIndex].user_info.nickname
                let invite  = this.inviteData[this.codeIndex].invite
                let avatar  = this.inviteData[this.codeIndex].user_info.avatar || '/static/user/user-portrait.png'
                let date    = this.inviteData[this.codeIndex].date
                draw = new Draw({
                    width: 375,
                 	height: 667,
                 	canvasId:'myCanvas',
                 	_this: this,
                 	background: {
                 		type: 'color',
                 		color: 'white',
                 		w: 375,
                 		h: 667,
                 	},
                })
                 let res = await draw.createdSharePoster(({ bgObj }) => {
                     let { width, height } = bgObj
                     this.Popinvite = bgObj
                     // 绘制内容
                     return [
                        // 背景
                        {
                             type: 'image',
                             x: 0,
                             y: 0,
                             src: back,
                             w: 375,
                             h: 667,
                             zIndex: 0,
                        },
                        
                        // 日历-边框
                        {
                            type: 'rect',
                            x: 280,
                            y: 10,
                            w: 60, // 宽度 必填
                            h: 80, // 高度 必填
                            zIndex: 99,
                            isFill: false, // 是否是填充矩形, false: 线性矩形
                            lineWidth: 1 ,// 当矩形为线性时，矩形的边框宽度
                            color: '#ffffff',
                        },
                        
                        // 日历-线条
                        {
                            type: 'line',
                            zIndex: 99,
                            x: 280,
                            y: 62,
                            w: 60, // 宽度 默认整个画布的宽度 - x轴的距离
                            color: '#ffffff', // 颜色 默认#000000 在不考虑字节跳动小程序的前提下可简写(#000)
                            alpha: 1, // 透明度 默认1 取值范围 0~1
                            lineType: 'solid', // 线条类型 默认 solid: 实线 可选 dashed: 虚线 
                            lineWidth: 1, // 线条高度
                            lineCap: 'butt' // 线条端点样式 默认 butt 可选 round, square
                        },
                        
                        // 日历-年月
                        {
                            type: 'text',
                            x: 284,
                            y: 18,
                            zIndex: 99,
                            w: width - (20 * 2),
                            text: date.solar.month,
                            color: '#ffffff',
                            font: {
                                size: 14
                            }
                        },
                        
                        // 日历-日
                        {
                            type: 'text',
                            x: 298,
                            y: 40,
                            zIndex: 99,
                            w: width - (20 * 2),
                            text: date.solar.day,
                            color: '#ffffff',
                            font: {
                                size: 18,
                                weight: 'bold'
                            }
                        },
                        
                        // 日历-农历日期
                        {
                            type: 'text',
                            x: 282,
                            y: 70,
                            zIndex: 99,
                            w: width - (20 * 2),
                            text: date.lunar,
                            color: '#ffffff',
                            font: {
                                size: 14
                            }
                        },
                        
                        // 用户昵称
                        {
                            type: 'text',
                            x: 86,
                            y: 600,
                            zIndex: 99,
                            w: width - (20 * 2),
                            text: name,
                            color: '#ffffff',
                            font: {
                                size: 16
                            }
                        },
                        
                        // 邀请码
                        {
                            type: 'text',
                            x: 86,
                            y: 628,
                            zIndex: 99,
                            w: width - (20 * 2),
                            text: '邀请码：' + invite,
                            color: '#c4a1cb',
                            font: {
                                size: 14
                            }
                        },
                        
                        // 用户头像
                        {
                            type: 'image',
                            x: 24,
                            y: 598,
                            src: avatar,
                            w: 46,
                            h: 46,
                            drawType: 'arc',
                            zIndex: 99,
                            borderWidth: 5, // 图片边框大小 默认0
                            borderColor: '#ffffff' // 图片边框颜色 默认无颜色
                        },
                         
                        // 二维码
                        {
                            type: 'image',
                            x: 280,
                            y: 585,
                            w: 72,
                            h: 72,
                            zIndex: 99,
                            src: img
                        }
                    ]
                 })
                 if (!res.success) return
                 this.posterImg = res.data
                 this.posterShow = true
			},
            
            // 保存图片
            async saveImage() {
                let { posterImg } = this
                let res = await saveImageToPhotosAlbum(posterImg)
            	if (!res.success) return
                showToast('保存成功,去相册分享给朋友吧')
            	this.posterShow = false
            },
            
            // 复制邀请码
            copyCenter(e) {
				// e.slice(0,2) + '$InviTaTiOn$CoDe/$-?' + e.substring(2)
				uni.setClipboardData({
					data: e,
					success(){
						uni.showToast({
							title: '邀请码已复制',
							icon : 'none'
						})
					}
				})
            },
            
            // 切换海报背景index
            swiperChange(e) {
            	this.codeIndex = e.detail.current
            }
        }
	}
</script>

<style lang="scss" scoped>
	.content{
		background: white;
		padding: $padding 0;
        box-sizing: border-box;
		min-height: 100vh;
		@extend .vertical;
	}
	// 轮播
	.code{
		position: relative;
		width: 100%;
		padding-top: calc(183% - 280rpx - #{$padding * 2});
		.code-swiper{
			position: absolute;
			top: 0;
			left: 0;
			width: 100%;
			height: 100%;
			.code-item{
				height: 100%;
				width: 100%;
				padding: 0 $padding/2;
				.code-lay{
					position: absolute;
					width: 100%;
					height: 100%;
					z-index: 10;
				}
				.code-back-image{
					width: 100%;
					height: 100%;
				}
			}
		}
	}
	
	// 提示信息
	.footer{
		padding: 0 $padding + 10;
		.hith{
			color: $text-gray;
			font-size: $title-size-sm;
            padding-top: $padding + 10;
		}
        .number {
            background-color: $border-color-lg;
            padding: $padding - 5;
            margin: $margin + 20 0;
            font-size: $title-size-lg;
            border-radius: 8rpx;
            display: flex;
            .title {
                flex: 1;
            }
            .value {
                font-size: $title-size-m;
                color: $text-price;
            }
        }
        .button {
            background: $text-price;
            border-radius: 0;
            height: 90rpx;
            line-height: 90rpx;
            font-size: $title-size;
            color: white;
            text-align: center;
            border-radius: 8rpx;
        }
		// number
		// title
		// value
		// button
		// title
	}
	
    // 头像昵称
    .codeCont {
        position: absolute;
        left: 10rpx;
        bottom: 0;
        width: 100%;
        padding: 16rpx 30rpx 20rpx;
        box-sizing: border-box;
        z-index: 9;
        .codeCont-avatar {
           width: 80rpx;
           height: 80rpx;
           border-radius: 50%;
           border: 4rpx solid #FFFFFF;
        }
        .codeCont-text {
            position: absolute;
            width: 100%;
            left: 0;
            top: 0;
            padding: 14rpx 40rpx 0 140rpx;
            box-sizing: border-box;
            .codeCont-name {
                color: #FFFFFF;
                font-size: $title-size;
                margin-bottom: 10rpx;
            }
            .codeCont-number {
                font-size: $title-size-sm;
                display: flex;
                color: #c4a1cb;
            }
        }
        .codeCont-img {
            width: 120rpx;
            height: 120rpx;
            position: absolute;
            right: 50rpx;
            bottom: 10rpx;
        }
    }
	// 日历
    .codDate {
        position: absolute;
        top: 15rpx;
        right: 70rpx;
        z-index: 9;
        color: #FFFFFF;
        text-align: center;
        font-size: 24rpx;
        border: 2rpx solid #fffefc;
        .codDate-year {
            padding-top: 5rpx;
        }
        .codDate-day {
            padding: 5rpx 0;
            font-size: 32rpx;
            font-weight: 600;
            border-bottom: 2rpx solid #a980c6;
        }
        .codDate-lunar {
            font-size: 24rpx;
            transform: scale(.9);
            padding: 4rpx 0;
        }
    }
    
    // canvas
    .my-canvas{
        width: 375px;
        height: 667px;
        position: fixed;
        top: -99999999999rpx;
        left: -99999999999rpx;
        z-index: -99999999999;
        opacity: 0;
    }
    .posterBack {
        width: 100%;
        height: 100%;
        position: fixed;
        background-color: rgba(0,0,0,.7);
        left: 0;
        top: 0;
    }
    .poster{
        width: 100vw;
        height: 100vh;
        display: flex;
        flex-flow: column nowrap;
        justify-content: center;
        overflow: hidden;
        position: fixed;
        top: 0;
        left: 0;
        z-index: 9;
        &-img{
            width: 580rpx;
            position: relative;
            margin: 70rpx auto 20rpx;
            .img{
                width: 100%;
            }
        }
        &-btn{
            padding: 0 $padding * 2;
            .operate {
                width: 100%;
                margin-bottom: 20rpx;
                height: 80rpx;
                line-height: 80rpx;
                border-radius: 40rpx;
                display: inline-block;
                text-align: center;
                color: #fff;
                &-cancel{
                    background-color: $text-price;
                }
            }
        }
    }
</style>
