<template>
    <div class="app-container">
        <el-drawer v-model="shelvesDrawer" size="100%" @before-close="handleCancel">
            <el-card class="box-card">
                <h3>商品介绍</h3>
                <el-form ref="goodsRef" :rules="rules" :model="goods" label-width="150px">
                    <el-form-item label="商品编号" prop="goodsSn">
                        <el-input v-model="goods.goodsSn" />
                    </el-form-item>
                    <el-form-item label="商品名称" prop="name">
                        <el-input v-model="goods.name" />
                    </el-form-item>
                    <el-form-item label="市场售价" prop="counterPrice">
                        <el-input v-model="goods.counterPrice" placeholder="0.00">
                            <template slot="append">元</template>
                        </el-input>
                    </el-form-item>
                    <el-form-item label="是否新品">
                        <el-radio-group v-model="goods.isNew">
                            <el-radio :label="true">新品</el-radio>
                            <el-radio :label="false">非新品</el-radio>
                        </el-radio-group>
                    </el-form-item>
                    <el-form-item label="是否热卖">
                        <el-radio-group v-model="goods.isHot">
                            <el-radio :label="false">普通</el-radio>
                            <el-radio :label="true">热卖</el-radio>
                        </el-radio-group>
                    </el-form-item>
                    <el-form-item label="是否在售">
                        <el-radio-group v-model="goods.isOnSale">
                            <el-radio :label="true">在售</el-radio>
                            <el-radio :label="false">未售</el-radio>
                        </el-radio-group>
                    </el-form-item>

                    <el-form-item label="商品图片">
                        <el-upload :action="uploadPath" :limit="1" :show-file-list="false" :headers="headers"
                            :on-success="uploadPicUrl" list-type="picture" class="avatar-uploader"
                            accept=".jpg,.jpeg,.png,.gif">
                            <img v-if="goods.picUrl" :src="'http://192.168.0.23' + goods.picUrl" class="avatar" />
                            <el-icon v-else class="avatar-uploader-icon">
                                <Plus />
                            </el-icon>
                        </el-upload>
                    </el-form-item>

                    <el-form-item label="宣传画廊">
                        <el-upload :action="uploadPath" :limit="5" :headers="headers" :on-exceed="uploadOverrun"
                            :on-success="handleGalleryUrl" :on-remove="handleRemove" multiple
                            accept=".jpg,.jpeg,.png,.gif" list-type="picture-card">
                            <el-icon class="avatar-uploader-icon">
                                <Plus />
                            </el-icon>
                        </el-upload>
                    </el-form-item>

                    <el-form-item label="商品单位">
                        <el-input v-model="goods.unit" placeholder="件 / 个 / 盒" />
                    </el-form-item>

                    <el-form-item label="关键字">
                        <el-tag v-for="tag in keywords" :key="tag" closable type="primary" @close="handleClose(tag)">
                            {{ tag }}
                        </el-tag>
                        <el-input v-if="newKeywordVisible" ref="newKeywordInput" v-model="newKeyword"
                            class="input-new-keyword" @keyup.enter.native="handleInputConfirm"
                            @blur="handleInputConfirm" />
                        <el-button v-else class="button-new-keyword" type="primary" @click="showInput">+ 增加</el-button>
                    </el-form-item>

                    <el-form-item label="商品配件">
                        <el-select v-model="goodsParts" multiple collapse-tags collapse-tags-tooltip
                            style="width: 240px">
                            <el-option v-for="item in partsList" :key="item.id" :label="item.name" :value="item.id" />
                        </el-select>
                    </el-form-item>

                    <el-form-item label="所属分类">
                        <el-cascader :options="categoryList" expand-trigger="hover" clearable
                            @change="handleCategoryChange" />
                    </el-form-item>

                    <el-form-item label="所属品牌商">
                        <el-select v-model="goods.brandId" clearable>
                            <el-option v-for="item in brandList" :key="item.value" :label="item.label"
                                :value="item.value" />
                        </el-select>
                    </el-form-item>

                    <el-form-item label="商品简介">
                        <el-input v-model="goods.brief" />
                    </el-form-item>

                    <el-form-item label="商品详细介绍">
                        <richTextEditor :valueHtml='goods.detail' @htmlChange="htmlChange" />
                    </el-form-item>
                </el-form>
            </el-card>

            <el-card class="box-card">
                <h3>商品规格</h3>
                <el-row :gutter="20" type="flex" align="middle" style="padding: 20px 0">
                    <el-col :span="10">
                        <el-radio-group v-model="multipleSpec" @change="specChanged">
                            <!-- <el-radio-button :label="false">默认标准规格</el-radio-button> -->
                            <el-radio-button :label="true">多规格支持</el-radio-button>
                        </el-radio-group>
                    </el-col>
                    <el-col v-if="multipleSpec" :span="10">
                        <el-button :plain="true" type="primary" @click="handleSpecificationShow">添加</el-button>
                    </el-col>
                </el-row>

                <el-table :data="specifications">
                    <el-table-column property="specification" label="规格名" align="left" />
                    <el-table-column property="value" label="规格值" align="center">
                        <template #default="scope">
                            <el-tag type="primary">
                                {{ scope.row.value }}
                            </el-tag>
                        </template>
                    </el-table-column>
                    <el-table-column property="picUrl" label="规格图片">
                        <template #default="scope">
                            <img v-if="scope.row.picUrl" :src="scope.row.picUrl" width="40" />
                        </template>
                    </el-table-column>
                    <el-table-column v-if="multipleSpec" align="center" label="操作" width="250"
                        class-name="small-padding fixed-width">
                        <template #default="scope">
                            <el-button type="danger" size="small" @click="handleSpecificationDelete(scope.row)">删除
                            </el-button>
                        </template>
                    </el-table-column>
                </el-table>

                <el-dialog v-model="specVisiable" title="设置规格">
                    <el-form ref="specRef" :rules="rules" :model="specForm" status-icon label-position="left"
                        label-width="100px" style="width: 400px; margin-left: 50px">
                        <el-form-item label="规格名" prop="specification">
                            <el-select v-model="specForm.specification" class="m-2" placeholder="请选择规格名"
                                @change="dictChange">
                                <el-option v-for="item in dictList" :key="item.id" :label="item.dictName"
                                    :value="item.id" />
                            </el-select>
                        </el-form-item>
                        <el-form-item label="规格值" prop="value">
                            <el-select v-model="specForm.value" multiple collapse-tags collapse-tags-tooltip
                                placeholder="请选择规格值" style="width: 240px" @change="dictItemChange">
                                <el-option v-for="item in dictItemList" :key="item.id" :label="item.itemText"
                                    :value="item.itemText" />
                            </el-select>
                        </el-form-item>
                        <el-form-item label="规格图片" prop="picUrl">
                            <el-upload :action="uploadPath" :show-file-list="false" :headers="headers"
                                :on-success="uploadSpecPicUrl" class="avatar-uploader" accept=".jpg,.jpeg,.png,.gif">
                                <div v-if="specForm.picUrl">
                                    <img :src="'http://192.168.0.23' + specForm.picUrl" class="avatar" />
                                </div>
                                <el-icon v-else class="avatar-uploader-icon">
                                    <Plus />
                                </el-icon>
                            </el-upload>
                        </el-form-item>
                    </el-form>
                    <template #footer class="dialog-footer">
                        <el-button @click="specVisiable = false">取消</el-button>
                        <el-button type="primary" @click="handleSpecificationAdd">确定</el-button>
                    </template>
                </el-dialog>
            </el-card>

            <el-card class="box-card">
                <h3>商品参数</h3>
                <el-button type="primary" @click="handleAttributeShow">添加</el-button>
                <el-table :data="attributes">
                    <el-table-column property="attribute" label="商品参数名称" />
                    <el-table-column property="value" label="商品参数值" />
                    <el-table-column align="center" label="操作" width="100" class-name="small-padding fixed-width">
                        <template #default="scope">
                            <el-button type="danger" size="small" @click="handleAttributeDelete(scope.row)">删除
                            </el-button>
                        </template>
                    </el-table-column>
                </el-table>

                <el-dialog v-model="attributeVisiable" title="添加商品参数">
                    <el-form ref="attributeRef" :model="attributeForm" status-icon label-position="left"
                        label-width="100px" style="width: 400px; margin-left: 50px">
                        <el-form-item label="商品参数名称" prop="attribute">
                            <el-input v-model="attributeForm.attribute" />
                        </el-form-item>
                        <el-form-item label="商品参数值" prop="value">
                            <el-input v-model="attributeForm.value" />
                        </el-form-item>
                    </el-form>
                    <template #footer class="dialog-footer">
                        <el-button @click="attributeVisiable = false">取消</el-button>
                        <el-button type="primary" @click="handleAttributeAdd">确定</el-button>
                    </template>
                </el-dialog>
            </el-card>

            <template #footer>
                <el-button @click="handleCancel">取消</el-button>
                <el-button type="primary" @click="handlePublish">上架</el-button>
            </template>
        </el-drawer>
    </div>
</template>

<script setup lang="ts">
import { ref } from "vue";
import { publishGoods, listCatAndBrand } from "@/services/api/commodityManage/list";
import { uploadPath } from "@/services/api/storage";
import { ElMessageBox, ElMessage, ElNotification } from "element-plus";
import richTextEditor from '@/components/richTextEditor.vue'
import { listGoods } from "@/services/api/commodityManage/list";
import { getDictList, getDictItemList } from '@/services/api/market/auxiliary'

let shelvesDrawer = ref(false)
let newKeywordVisible = ref(false);
let newKeyword = ref("");
let keywords = ref([] as any);
let categoryList = ref([] as any);
let brandList = ref([] as any);
let goods = ref({
    goodsSn: "",
    name: "",
    counterPrice: "",
    gallery: [] as any,
    isHot: false,
    isNew: true,
    isOnSale: true,
    picUrl: "",
    unit: "",
    brandId: "",
    brief: "",
    detail: '<p></p>',
    categoryId: undefined,
    keywords: undefined,
});
let goodsParts = ref()
let specVisiable = ref(false);
let specForm = ref({ specification: "", value: "", picUrl: "" });
let multipleSpec = ref(true);
let specifications = ref([] as any);
let productVisiable = ref(false);
let productForm = ref({
    id: 0,
    specifications: [],
    price: 0.0,
    number: 0,
    url: "",
});
let headers = ref({ 'Authorization': sessionStorage.getItem("token") })

let products = ref([
    { id: 0, specifications: ["标准"], price: 0.0, number: 0, url: "" },
]);

let attributeVisiable = ref(false);
let attributeForm = ref({ attribute: "", value: "" } as any);
let attributes = ref([] as any);
let rules = ref({
    goodsSn: [{ required: true, message: "商品编号不能为空", trigger: "blur" }],
    name: [{ required: true, message: "商品名称不能为空", trigger: "blur" }],
});

let emits = defineEmits(['initShelves'])

let init = () => {
    listCatAndBrand().then((res: any) => {
        categoryList.value = res.data.categoryList;
        brandList.value = res.data.brandList;
    });
}
init()

let partsList = ref()
let initList = () => {
    listGoods({
        page: 1,
        limit: 10,
        sort: "add_time",
        order: "desc",
    }).then((res: any) => {
        if (res.code === 200) {
            partsList.value = res.data.list;
        }
    })
}
initList()

let htmlChange = (value: any) => goods.value.detail = value

let handleCategoryChange = (value: any) => {
    goods.value.categoryId = value[value.length - 1];
}
let handleCancel = () => {
    goods.value = {
        goodsSn: "",
        name: "",
        counterPrice: "",
        gallery: [] as any,
        isHot: false,
        isNew: true,
        isOnSale: true,
        picUrl: "",
        unit: "",
        brandId: "",
        brief: "",
        detail: '<p></p>',
        categoryId: undefined,
        keywords: undefined,
    }
    specifications.value = []
    products.value = [{ id: 0, specifications: ["标准"], price: 0.0, number: 0, url: "" },]
    goodsParts.value = []
    attributes.value = []
    shelvesDrawer.value = false
}
let handlePublish = () => {
    const finalGoods = {
        goods: goods.value,
        specifications: specifications.value,
        products: products.value,
        attributes: attributes.value,
        parts: goodsParts.value
    };
    publishGoods(finalGoods)
        .then((res: any) => {
            ElNotification({
                type: 'success',
                title: "成功",
                message: "创建成功",
            });
            emits('initShelves')
            handleCancel()
        })
        .catch((res) => {
            ElMessageBox.alert("业务错误：" + res.data.errmsg, "警告", {
                confirmButtonText: "确定",
                type: "error",
            });
        });
}
let handleClose = (tag: any) => {
    keywords.value.splice(keywords.value.indexOf(tag), 1);
    goods.value.keywords = keywords.value.toString();
}

let showInput = () => {
    newKeywordVisible.value = true;
}

let handleInputConfirm = () => {
    const newKeywords: string = newKeyword.value;
    if (newKeywords) {
        keywords.value.push(newKeywords);
        goods.value.keywords = keywords.value.toString();
    }
    newKeywordVisible.value = false;
    newKeyword.value = "";
}

let uploadPicUrl = (res: any) => {
    goods.value.picUrl = res.data.url;
}
let uploadOverrun = () => {
    ElMessage({
        type: "error",
        message: "上传文件个数超出限制!最多上传5张图片!",
    });
}
let handleGalleryUrl = (res: any, file: any, fileList: any) => {
    if (res.errno === 0) {
        goods.value.gallery.push(res.data.url);
    }
}
let handleRemove = (file: any, fileList: any) => {
    for (let i = 0; i < goods.value.gallery.length; i++) {
        // 这里存在两种情况
        // 1. 如果所删除图片是刚刚上传的图片，那么图片地址是file.res.data.url
        //    此时的file.url虽然存在，但是是本机地址，而不是远程地址。
        // 2. 如果所删除图片是后台返回的已有图片，那么图片地址是file.url
        let url;
        if (file.res === undefined) {
            url = file.url;
        } else {
            url = file.res.data.url;
        }

        if (goods.value.gallery[i] === url) {
            goods.value.gallery.splice(i, 1);
        }
    }
}
let specChanged = (label: any) => {
    if (label === false) {
        specifications.value = [
            { specification: "规格", value: "标准", picUrl: "" },
        ];
        products.value = [
            { id: 0, specifications: ["标准"], price: 0.0, number: 0, url: "" },
        ];
    } else {
        specifications.value = [];
        products.value = [];
    }
}
let uploadSpecPicUrl = (res: any) => {
    console.log('上传成功');
    // specForm.value.picUrl = res.data.url;
}
let dictList = ref()
let handleSpecificationShow = () => {
    getDictList().then((res: any) => {
        if (res.code === 200) {
            dictList.value = res.data.records
            specForm.value = { specification: "", value: "", picUrl: "" };
            specVisiable.value = true;
        }
    })
}
let handleSpecificationAdd = () => {
    if (!dictName.value) return ElMessage({
        type: 'warning',
        message: '请选择规格名'
    })
    if (dictValue.value) {
        for (let s of dictValue.value) {
            specifications.value.push({
                specification: dictName.value,
                value: s
            })
        }
        specVisiable.value = false;
        specToProduct();
    } else {
        ElMessage({
            type: 'warning',
            message: '请选择规格值'
        })
    }
}
let handleSpecificationDelete = (row: any) => {
    const index = specifications.value.indexOf(row);
    specifications.value.splice(index, 1);
    specToProduct();
}

let dictItemList = ref()
let dictName = ref()
let dictValue = ref()
let dictChange = (id: any) => {
    getDictItemList({ dictId: id }).then((res: any) => {
        if (res.code === 200) {
            dictItemList.value = res.data.records
            for (let s of dictList.value) {
                if (s.id === id) dictName.value = s.dictName
            }
        }
    })
}
let dictItemChange = (val: []) => {
    dictValue.value = val
}
let specToProduct = () => {
    if (specifications.value.length === 0) {
        return;
    }
    // 根据specifications创建临时规格列表
    let specValues = [];
    let spec = specifications.value[0].specification;
    let values = [];
    values.push(0);

    for (let i = 1; i < specifications.value.length; i++) {
        const aspec = specifications.value[i].specification;

        if (aspec === spec) {
            values.push(i);
        } else {
            specValues.push(values);
            spec = aspec;
            values = [];
            values.push(i);
        }
    }
    specValues.push(values);

    // 根据临时规格列表生产货品规格
    // 算法基于 https://blog.csdn.net/tyhj_sf/article/details/53893125
    let productsIndex = 0;
    let products = [];
    let combination = [];
    let n = specValues.length;
    for (let s = 0; s < n; s++) {
        combination[s] = 0;
    }
    let index = 0;
    let isContinue = false;
    do {
        let specifications = [] as any;
        for (let x = 0; x < n; x++) {
            let z = specValues[x][combination[x]];
            specifications.push(specifications[z]);
        }
        products[productsIndex] = {
            id: productsIndex,
            specifications: specifications,
            price: 0.0,
            number: 0,
            url: "",
        };
        productsIndex++;

        index++;
        combination[n - 1] = index;
        for (let j = n - 1; j >= 0; j--) {
            if (combination[j] >= specValues[j].length) {
                combination[j] = 0;
                index = 0;
                if (j - 1 >= 0) {
                    combination[j - 1] = combination[j - 1] + 1;
                }
            }
        }
        isContinue = false;
        for (let p = 0; p < n; p++) {
            if (combination[p] !== 0) {
                isContinue = true;
            }
        }
    } while (isContinue);

    products = products;
}
let handleProductShow = (row: any) => {
    productForm = Object.assign({}, row);
    productVisiable.value = true;
}
let uploadProductUrl = (res: any) => {
    productForm.value.url = res.data.url;
}
let handleProductEdit = () => {
    for (let i = 0; i < products.value.length; i++) {
        const v = products.value[i];
        if (v.id === productForm.value.id) {
            products.value.splice(i, 1, productForm.value);
            break;
        }
    }
    productVisiable.value = false;
}
let handleAttributeShow = () => {
    attributeForm.value = {};
    attributeVisiable.value = true;
}
let handleAttributeAdd = () => {
    attributes.value.unshift(attributeForm.value);
    attributeVisiable.value = false;
}
let handleAttributeDelete = (row: any) => {
    const index = attributes.value.indexOf(row);
    attributes.value.splice(index, 1);
}

defineExpose({
    shelvesDrawer
})
</script>

<style>
.el-card {
    margin-bottom: 10px;
}

.el-tag+.el-tag {
    margin-left: 10px;
}

.input-new-keyword {
    width: 90px;
    margin-left: 10px;
    vertical-align: bottom;
}

.avatar-uploader .el-upload {
    width: 145px;
    height: 145px;
    border: 1px dashed #d9d9d9;
    border-radius: 6px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.avatar-uploader .el-upload:hover {
    border-color: #20a0ff;
}

.avatar-uploader-icon {
    font-size: 28px;
    color: #8c939d;
    width: 120px;
    height: 120px;
    line-height: 120px;
    text-align: center;
}

.avatar {
    width: 145px;
    height: 145px;
    display: block;
}

.op-container {
    display: flex;
    justify-content: center;
}
</style>