book-hi/pages/home/index.vue

<template>
    <view class="container" :style="{ background: containerBg }" :class="bookList.length ? 'book-list' : 'no-list'">
        <u-navbar :is-back="false" :border-bottom="false" :background="{ background: navbarBackground }">
            <text class="nav-title">卖书给书嗨</text>
        </u-navbar>

        <not-scanned v-if="!bookList.length"></not-scanned>
        <scan-book-list
            v-else
            @updateBooks="updateBooksList"
            @deleted="getLastOrder"
            :bookList="bookList"
            ref="scanBookList"
        ></scan-book-list>
        <!-- 底部固定按钮 -->
        <view class="bottom-fixed">
            <view class="btn-wrap mb-20">
                <button class="scan-btn flex-1" @click="handleScan">
                    <u-icon name="scan" color="#FFFFFF" size="40"></u-icon>
                    <text>扫码卖书</text>
                </button>
                <button class="isbn-btn flex-1" @click="goToInputISBN">
                    <u-icon name="edit-pen" color="#4CD964" size="40"></u-icon>
                    <text>输入ISBN</text>
                </button>
            </view>

            <view class="flex-a flex-j-b pad-20" style="padding-top: 0" v-if="bookList.length">
                <view class="left-info" style="min-width: 194px">
                    <view class="flex-a common-text">
                        共<text class="color-red">{{ totalBooks }}</text
                        >件 预估回收价 <text class="color-red">¥{{ totalPrice || 0 }}</text>
                    </view>
                    <text class="common-text tip">*旧书预估价格满 {{ orderInfo.minOrderMoney }} 元起收</text>
                </view>

                <button class="scan-btn next-btn" @click="onNext" :disabled="isDisabled">下一步</button>
            </view>

            <service-info v-if="bookList.length" :serviceList="serviceList" :firstOrder="orderInfo.firstOrder"></service-info>
        </view>

        <InputIsbn ref="isbnPopup" @submit="checkBookISBN" />
        <!-- 套装书说明弹窗 -->
        <CommonDialog ref="setBookDialog" title="套装书说明" :showCancel="false" @confirm="handleSetBookConfirm">
            <text
                >套装书(ISBN码相同的系列书箱)只需扫描其中一册，扫码价即套装价。打包时请把所有单册统在一起或放在一个袋子里寄出。</text
            >
        </CommonDialog>

        <!-- 暂不回收弹窗 -->
        <CommonDialog ref="notAcceptDialog" title="暂不回收" :showCancel="false">
            <text>这本书暂时不回收，请您过段时间再来试试~</text>
        </CommonDialog>

        <!-- 暂无信息弹窗 -->
        <CommonDialog ref="noInfoDialog" title="暂无信息" :showCancel="false">
            <text>抱歉，没有该书的信息，书嗨会定期补充图书信息，请您过段时间再来试试~</text>
        </CommonDialog>

        <!-- 扫累了弹窗 -->
        <CommonDialog ref="tiredDialog" title="温馨提示" :showCancel="false">
            <text>扫累了，休息休息吧~</text>
        </CommonDialog>

        <!-- 该书超出最大回收本数  maxAcceptDialog-->
        <CommonDialog ref="maxAcceptDialog" title="温馨提示" :showCancel="false">
            <text>该书超出最大回收本数</text>
        </CommonDialog>

        <!-- 单个订单最多40本书  orderMaxNumDialog-->
        <CommonDialog ref="orderMaxNumDialog" title="温馨提示" :showCancel="false">
            <text>单个订单最多40本书</text>
        </CommonDialog>

        <!-- 温馨提示弹窗 -->
        <KindReminder ref="kindReminder" @start="handleStartSelling" @viewRules="handleViewRules" />

        <view 
            class="customer-service" 
            :style="{ left: servicePosition.left + 'px', right: servicePosition.right + 'px', bottom: servicePosition.bottom + 'px' }"
            @touchstart="touchStart"
            @touchmove="touchMove"
            @touchend="touchEnd"
        >
            <button class="service-btn" open-type="contact">
                <image src="/static/img/kf.png" mode="widthFix" style="width: 126rpx; height: 140rpx"></image>
            </button>
        </view>

        <ConfirmBooks ref="confirmBooks" @incomplete="handleIncomplete" />
        <!-- 首单免费弹窗 -->
        <FirstOrderFreePopup ref="firstOrderFreePopup" />
    </view>
</template>

<script>
import notScanned from "./components/notScanned.vue";
import InputIsbn from "./components/InputIsbn.vue";
import ScanBookList from "./components/ScanBookList.vue";
import CommonDialog from "@/components/common-dialog.vue";
import KindReminder from "./components/KindReminder.vue";
import ServiceInfo from "./components/ServiceInfo.vue";
import ConfirmBooks from "./components/ConfirmBooks.vue";
import FirstOrderFreePopup from "./components/FirstOrderFreePopup.vue";
export default {
    components: {
        notScanned,
        InputIsbn,
        ScanBookList,
        CommonDialog,
        KindReminder,
        ServiceInfo,
        ConfirmBooks,
        FirstOrderFreePopup,
    },
    data() {
        return {
            orderInfo: {},
            collapseState: {
                step1: false,
                step3: false,
            },
            scrollTop: 0,
            bookList: [],
            serviceList: [],
            currentBook: {},
            // 客服按钮位置
            servicePosition: {
                left: 'auto',
                right: 0,
                bottom: '20%'
            },
            // 触摸开始位置
            startX: 0,
            startY: 0,
            // 屏幕宽度和高度
            screenWidth: 0,
            screenHeight: 0,
            // 初始位置记录，用于计算拖动
            initialLeft: 0,
            initialBottom: 0,
            // 是否正在更新位置，用于防止频繁更新
            isUpdatingPosition: false,
        };
    },
    computed: {
        navbarBackground() {
            if (this.scrollTop > 0) {
                return "linear-gradient(180deg, #4CD964 0%, #5ff178 100%)";
            }
            return "transparent";
        },
        containerBg() {
            return this.bookList.length > 0
                ? "linear-gradient(180deg, #4CD964 0%, #F8F8F8 25%)"
                : "linear-gradient(180deg, #4CD964 0%, #ffffff 25%)";
        },
        containerPb() {
            return this.bookList.length > 0 ? "300rpx" : "110rpx";
        },
        totalBooks() {
            return this.bookList.reduce((sum, book) => sum + (book.num || 1), 0);
        },
        totalPrice() {
            return this.bookList.reduce((sum, book) => sum + book.recyclePrice * (book.num || 1), 0).toFixed(2);
        },
        isDisabled() {
            return this.totalPrice < this.orderInfo.minOrderMoney;
        },
    },
    onPageScroll(e) {
        this.$nextTick(() => {
            this.scrollTop = e.scrollTop;
        });
    },
    onReady() {
        // 获取屏幕宽度和高度
        uni.getSystemInfo({
            success: (res) => {
                this.screenWidth = res.windowWidth;
                this.screenHeight = res.windowHeight;
            }
        });
    },
    methods: {
        // 触摸开始
        touchStart(e) {
            const touch = e.touches[0];
            this.startX = touch.clientX;
            this.startY = touch.clientY;
            
            // 记录初始位置，用于计算移动距离
            if (this.servicePosition.right !== 'auto') {
                // 如果是靠右定位，记录当前位置但不立即改变显示位置
                // 只在内部计算中使用，避免视觉上的位置跳动
                this.initialLeft = this.screenWidth - 126;
            } else {
                this.initialLeft = parseFloat(this.servicePosition.left);
            }
            
            // 如果bottom是百分比，转换为具体像素值，但不改变显示位置
            if (typeof this.servicePosition.bottom === 'string' && this.servicePosition.bottom.includes('%')) {
                const percentage = parseFloat(this.servicePosition.bottom) / 100;
                this.initialBottom = this.screenHeight * percentage;
            } else {
                this.initialBottom = parseFloat(this.servicePosition.bottom);
            }
        },
        
        // 触摸移动
        touchMove(e) {
            // 阻止默认行为，防止页面滚动
            e.preventDefault && e.preventDefault();
            e.stopPropagation && e.stopPropagation();
            
            const touch = e.touches[0];
            
            // 计算移动距离
            const deltaX = touch.clientX - this.startX;
            const deltaY = touch.clientY - this.startY;
            
            // 使用初始位置计算新位置，避免累积误差
            let newLeft = this.initialLeft + deltaX;
            let newBottom = this.initialBottom - deltaY; // 注意：y轴方向是相反的
            
            // 确保按钮不超出屏幕边界
            if (newLeft < 0) {
                newLeft = 0;
            } else if (newLeft > this.screenWidth - 126) {
                newLeft = this.screenWidth - 126;
            }
            
            // 确保按钮不超出屏幕垂直边界
            if (newBottom < 20) {
                newBottom = 20;
            } else if (newBottom > this.screenHeight - 160) {
                newBottom = this.screenHeight - 160;
            }
            
            // 使用节流方式更新位置，避免过于频繁的更新
            if (!this.isUpdatingPosition) {
                this.isUpdatingPosition = true;
                
                // 更新位置 - 第一次移动时才真正改变right为auto
                this.servicePosition = {
                    left: newLeft,
                    right: 'auto',
                    bottom: newBottom
                };
                
                // 使用setTimeout代替requestAnimationFrame，在微信小程序中更兼容
                setTimeout(() => {
                    this.isUpdatingPosition = false;
                }, 16); // 约等于60fps的刷新率
            }
            
            // 不更新起始点，保持相对于初始触摸点的位移计算
            // 这样可以避免累积误差，使拖动更精确
        },
        
        // 触摸结束，实现吸附效果
        touchEnd() {
            // 确保不再有待处理的更新
            this.isUpdatingPosition = false;
            
            const buttonCenter = this.servicePosition.left + 63; // 按钮中心位置
            const halfScreen = this.screenWidth / 2;
            
            // 判断是吸附到左边还是右边
            if (buttonCenter < halfScreen) {
                // 吸附到左边
                this.servicePosition = {
                    left: 0,
                    right: 'auto',
                    bottom: this.servicePosition.bottom
                };
            } else {
                // 吸附到右边
                this.servicePosition = {
                    left: 'auto',
                    right: 0,
                    bottom: this.servicePosition.bottom
                };
            }
        },
        
        handleStart() {
            this.showPopup = true;
        },
        //套装书确认
        handleSetBookConfirm() {
            this.$refs.confirmBooks.openPopup(this.currentBook);
        },
        //书册补全
        handleIncomplete() {
            this.$refs.scanBookList.handleDeleteBook(this.currentBook);
        },

        //提交
        onNext() {
            let orderId = this.orderInfo.orderId;
            //预提交
            uni.$u.http.get("/token/order/preSubmit?orderId=" + orderId).then((res) => {
                if (res.code == 200) {
                    if (res.data.code == 1 || res.data.code == 2) {
                        uni.navigateTo({
                            url: "/pages-home/pages/book-order",
                        });
                        uni.setStorageSync("orderId", orderId);
                    } else {
                        uni.showToast({
                            icon: "none",
                            title: res.msg,
                        });
                    }
                } else {
                    uni.showToast({
                        icon: "none",
                        title: res.msg,
                    });
                }
            });
        },

        updateBooksList(data) {
            this.bookList = data;
        },

        toggleCollapse(step) {
            this.$set(this.collapseState, step, !this.collapseState[step]);
        },
        handleScan() {
            uni.scanCode({
                scanType: ["barCode"],
                success: (res) => {
                    this.checkBookISBN(res.result);
                },
                fail: () => {
                    uni.showToast({
                        title: "扫码失败",
                        icon: "none",
                    });
                },
            });
        },
        checkBookISBN(isbn) {
            uni.$u.http.get("/token/order/scanIsbn?isbn=" + isbn).then((res) => {
                if (res.code == 200) {
                    let code = res.data.code;
                    if (code == 1) {
                        res.data.num = 1;
                        res.data.status = 1;
                        res.data.recyclePrice = res.data.recycleMoney;
                        this.currentBook = res.data;
                        this.bookList.push(res.data);
                        if (res.data.suit == 1) {
                            this.$refs.setBookDialog.openPopup();
                        }
                    } else if (code == 2) {
                        let item = this.bookList.find((v) => v.isbn === isbn);
                        item.num = item.num + 1;
                    } else {
                        this.handleBookCode(res.data.code);
                    }
                } else {
                    uni.showToast({
                        title: res.msg,
                        icon: "none",
                    });
                }
            });
        },
        //处理扫码之后不同的状态 0-扫码频繁 1-成功 2-本单已有该书，数量+1  3-没有该书 4-本书暂不回收 5-超过每单最大可卖数量  6-单个订单最多40本书
        handleBookCode(code) {
            if (code == 1) {
                this.bookList.push();
            }
            let tempKeys = [
                "tiredDialog",
                "",
                "",
                "noInfoDialog",
                "notAcceptDialog",
                "maxAcceptDialog",
                "orderMaxNumDialog",
            ];
            let key = tempKeys[code];
            if (key) {
                this.$refs[key].openPopup();
            }
        },
        //获取当前用户未提交订单 /api/token/order/lastOrder
        getLastOrder() {
            uni.$u.http.get("/token/order/lastOrder").then((res) => {
                if (res.code == 200) {
                    this.orderInfo = res.data;
                    if (res.data.showDialog == 1) {
                        this.$refs.firstOrderFreePopup.openPopup();
                    } else if (res.data.showDialog == 2) {
                        this.$refs.kindReminder.openPopup();
                    }

                    this.bookList = res.data?.orderDetailList
                        ? res.data.orderDetailList.map((v) => {
                              v.orderId = res.data.orderId;
                              return v;
                          })
                        : [];
                    this.serviceList = res.data.serviceList || [];
                }
            });
        },

        goToScannedBooks() {
            uni.navigateTo({
                url: "/pages-home/pages/scaned-book",
            });
        },
        goToInputISBN() {
            this.$refs.isbnPopup.openPopup();
        },
        handleStartSelling() {
            // 标记已显示过温馨提示
            uni.setStorageSync("kindReminderShown", true);
        },
    },

    onShow() {
        // 获取上一个订单
        setTimeout(() => {
            this.getLastOrder();
        }, 300);
    },
};
</script>

<style lang="scss" scoped>
.customer-service {
    position: fixed;
    width: 126rpx;
    height: 140rpx;
    bottom: 20%;
    z-index: 999;
    transition: all 0.3s ease; /* 添加过渡效果使吸附更平滑 */
    button {
        height: max-content;
        background-color: transparent;
        padding: 0;
    }
}
.container {
    height: 100%;
    position: relative;
    overflow: auto;
    z-index: 1;
    /* #ifdef MP-WEIXIN */
    min-height: 100vh;
    /* #endif */
    /* #ifndef MP-WEIXIN */
    min-height: calc(100vh - 120rpx);

    /* #endif */
    &.book-list {
        padding-bottom: 300rpx;
    }

    padding-bottom: 130rpx;

    .nav-title {
        font-family: PingFang SC;
        font-weight: bold;
        font-size: 34rpx;
        color: #ffffff;
        padding-left: 40rpx;
    }
}

.common-text {
    font-family: PingFang SC;
    font-weight: 500;
    font-size: 28rpx;
    color: #999999;

    &.tip {
        color: #ff8a4b;
    }
}

.color-red {
    color: #ff0000;
    margin: 0 10rpx;
}

.bottom-fixed {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9;
    background-color: #ffffff;
    /* #ifdef H5 */
    padding-bottom: 120rpx;
    /* #endif */

    .btn-wrap {
        display: flex;
        gap: 20rpx;
        padding: 20rpx;
        padding-bottom: 0;

        button {
            flex: 1;
            height: 88rpx;
            border-radius: 10rpx;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10rpx;
            border: none;

            text {
                font-size: 32rpx;
            }

            &::after {
                border: none;
            }
        }

        .isbn-btn {
            background-color: #ffffff;
            color: #4cd964;
            border: 3rpx solid #4cd964;
        }
    }

    .scan-btn {
        background-color: #4cd964;
        color: #ffffff;
    }

    .next-btn {
        margin: 0;
        margin-left: 20rpx;

        &[aria-disabled="true"] {
            background-color: #cccccc;
            color: #ffffff;
            opacity: 0.7;
            cursor: not-allowed;
        }
    }
}
</style>