<template>
    <view class="random_practice">
        <nav-bar title="随机练习"></nav-bar>
        <view class="contents">
            <view class="exam_si">试卷情况</view>
            <image src="/pages2/static/random/exam_situ.png" class="examSitu"></image>
            <view class="nums">
                <view class="n_item">
                    <text class="do_num">{{ questionNum.doNum || 0 }}</text>
                    <text class="word">已完成题数</text>
                </view>
                <view class="n_item">
                    <text class="do_num">{{ questionNum.totalNum || 0 }}</text>
                    <text class="word">总题数</text>
                </view>
                <view class="n_item">
                    <text class="do_num">{{ accuracy }}</text>
                    <text class="word">正确率</text>
                </view>
            </view>
            <view class="number_crad">
                <view class="title">选择做题数量</view>
                <view class="crads">
                    <view v-for="(item, index) in numberLists" :key="index" class="items"
                     :class="{nactive: item == number}" @click="changeNum(item)">
                        {{item}}
                    </view>
                </view>
                <view class="starts" @click="startPractice()">
                    开始做题
                </view>
            </view>
            
        </view>
    </view>
</template>

<script>
export default {
    data() {
        return {
            goodsId: '',
            orderGoodsId: '',
            numberLists: [5, 10, 15, 20, 50, 100],
            number: 5,
            questionNum: {}
        }
    },
    onLoad(option) {
        this.goodsId = option.goodsId
        this.orderGoodsId = option.orderGoodsId
    },
    onShow() {
        this.getQuestionTempNum()
    },
    computed: {
        accuracy() {
            if (this.questionNum.rightNum >= this.questionNum.totalNum) {
                return '100%'
            } else {
                let value = (this.questionNum.rightNum / this.questionNum.totalNum ) * 100
                return value.toFixed(2) + '%'
            }
        }
    },
    methods: {
        changeNum(item) {
            this.number = item
        },
        getQuestionTempNum() {
            this.$http({
                url: `/goods/bank/questionTempNum/${this.orderGoodsId}`,
                method: 'get',
            }).then((res) => {
                if (res.data.code == 200) {
                    this.questionNum = res.data.data || {}
                }
            })
        },
        startPractice() {
            this.$http({
                url: '/bank/exam/temp',
                method: 'post',
                data: {
                    goodsId: this.goodsId,
                    orderGoodsId: this.orderGoodsId,
                    number: this.number
                }
            }).then((res) => {
                if(res.data.code == 200) {
                    uni.navigateTo({
                        url:'/pages2/bank/questionBank?orderGoodsId='+ this.orderGoodsId + '&id=""' + '&goodsid=' + this.goodsId 
                        +'&moduleId=0' + '&chapterId=0' + '&entryType=random' + '&bankNum=' + this.number
                    })
                } else {
                    this.$u.toast(res.data.msg)
                }
            })
            
        }
    },
}
</script>

<style lang="scss">
.random_practice {
    width: 100%;
    padding: 24rpx 26rpx;
    background: #FAFAFA;
}
.contents {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    .examSitu {
        width: 200rpx;
        height: 200rpx;
        margin-bottom: 56rpx;
    }
    .exam_si {
        color: #222222;
        font-size: 32rpx;
        font-weight: bold;
        margin: 80rpx 0rpx 40rpx 0rpx;
    }
    .nums {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-around;
        margin-bottom: 132rpx;
        .n_item {
            display: flex;
            flex-direction: column;
            align-items: center;
            .do_num {
                font-size: 48rpx;
                font-family: DIN-Medium, DIN;
                font-weight: 500;
                color: #222222;
                margin-bottom: 8rpx;
            }
            .word {
                font-size: 24rpx;
                font-family: PingFang SC-Medium, PingFang SC;
                font-weight: 500;
                color: #808DA4;
            }
        }
    }
}

.number_crad {
    width: 100%;
    padding: 0rpx 26rpx;
    text-align: center;
    background-color: #fff;
    margin-bottom: 178rpx;
    border-radius: 24rpx;
    .title {
        font-size: 36rpx;
        font-family: PingFang SC-Medium, PingFang SC;
        font-weight: 500;
        color: #222222;
        margin: 56rpx 0rpx;
    }
    .crads {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        .items {
            width: 204rpx;
            height: 96rpx;
            line-height: 96rpx;
            text-align: center;
            background: #F8F8FA;
            border-radius: 24rpx;
            margin-bottom: 28rpx;
            font-size: 48rpx;
            font-family: DIN Alternate-Bold, DIN Alternate;
            font-weight: bold;
            color: #222222;
            &.nactive {
                background: #E8F6FF;
                color: #3577E8;
            }
        }
    }
    .starts {
        width: 646rpx;
        height: 96rpx;
        line-height: 96rpx;
        text-align: center;
        color: #fff;
        font-size: 32rpx;
        font-weight: bold;
        background: #3577E8;
        border-radius: 24rpx;
        margin: 52rpx 0rpx 40rpx 0rpx;
    }
}
</style>