<template>
  <div
    class="project-form"
    :style="{
      backgroundColor: projectTheme.backgroundColor,
      background: projectTheme.backgroundImg
        ? 'url(' + projectTheme.backgroundImg + ')  no-repeat center'
        : '',
    }"
  >
    <div class="">
      <div :style="{ textAlign: projectTheme.logoPosition }">
        <img :src="projectTheme.logoImg" class="logo-img" />
      </div>
      <el-image
        v-if="projectTheme.headImgUrl"
        :src="projectTheme.headImgUrl"
        style="width: 100%"
        fit="scale-down"
      />
      <h4
        v-if="projectTheme.showTitle"
        class="form-name-text"
        style="text-align: center"
      >
        {{ formConf.title }}
      </h4>
      <div
        v-show="projectTheme.showDescribe"
        class="form-name-text describe-html"
        v-html="formConf.description"
      />
      <el-divider />
      <parser
        v-if="startParser"
        :key="parserKey"
        :form-model="formModel"
        :label-form-model="labelFormModel"
        :form-conf="formConf"
        @next="nextPage"
        @prev="prevPage"
        @submit="submitForm"
      />
    </div>
  </div>
</template>

<script>
import Parser from "@/components/parser/Parser";
import { dbDataConvertForItemJson } from "@/utils/convert";
import { getExpression } from "@/utils/expression";
import _ from "lodash";

window.onload = function () {
  document.addEventListener("touchstart", function (event) {
    if (event.touches.length > 1) {
      event.preventDefault();
    }
  });
  document.addEventListener("gesturestart", function (event) {
    event.preventDefault();
  });
};
export default {
  components: {
    Parser,
  },
  props: {
    projectConfig: {
      projectKey: "",
      showBtns: true,
      // 项目种类  1 普通  2模板
      projectKind: 1,
    },
    drawingList: {
      type: Array,
    },
  },
  metaInfo: {
    meta: [
      {
        name: "viewport",
        content:
          "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no",
      },
    ],
  },
  data() {
    return {
      logicShowTriggerRule: {},
      startParser: false,
      formModel: {},
      labelFormModel: {},
      projectTheme: {
        headImgUrl: "",
        logoImg: "",
        showTitle: true,
        showDescribe: true,
      },
      parserKey: +new Date(),
      // 每页数据
      perPageFields: {},
      formConf: {
        fields: [],
        logicShowRule: {},
        projectKey: "",
        projectKind: 1,
        __methods__: {},
        formRef: "elForm",
        formModel: "formData",
        labelFormModel: "labelFormData",
        size: "small",
        labelPosition: "top",
        labelWidth: 100,
        formRules: "rules",
        gutter: 15,
        disabled: false,
        span: 24,
        formBtns: true,
        resetBtn: false,
        submitBtnText: "提交",
        submitBtnColor: "#409EFF",
        showNumber: false,
        unFocusedComponentBorder: true,
      },
    };
  },
  computed: {},
  watch: {},
  beforeCreate() {
    document.querySelector("body").className = "project-body";
  },
  created() {
    if (this.projectConfig && this.projectConfig.projectKey) {
      this.formConf.projectKey = this.projectConfig.projectKey;
      if (this.projectConfig.projectKind) {
        this.formConf.projectKind = this.projectConfig.projectKind;
      }
    } else if (this.$route.query.key) {
      // 不存去路由中尝试获取 iframe
      this.formConf.projectKey = this.$route.query.key;
      if (this.$route.query.kind) {
        this.formConf.projectKind = this.$route.query.kind;
      }
      this.formConf.formBtns = true;
    }
    this.formConf.size = window.innerWidth < 480 ? "medium" : "small";
  },
  async mounted() {
    let url = `/user/project/details/${this.formConf.projectKey}`;
    if (this.formConf.projectKind == 2) {
      url = `/project/template/details/${this.formConf.projectKey}`;
    }
    let logicItemList = [];
    // 处理逻辑表单
    if (this.formConf.projectKind == 1) {
      let res = await this.queryLogicItemList();
      logicItemList = res.data;
    }
    let logicItemMap = new Map();
    logicItemList.forEach((item) => {
      logicItemMap.set(item.formItemId, item);
      this.logicShowTriggerHandle(item);
    });
    // this.$api.get(url).then(res => {
    //     if (res.data) {
    let serialNumber = 1;
    let fields = this.drawingList.map((item) => {
      let projectItem = dbDataConvertForItemJson(item);
      projectItem.serialNumber = serialNumber;
      projectItem.logicShow = !logicItemMap.get(projectItem.formItemId);
      serialNumber++;
      return projectItem;
    });
    this.pageShowHandle(fields);
    if (_.keys(this.perPageFields).length != 0) {
      this.formConf.fields = _.get(this.perPageFields, 1);
      this.formConf.formBtns = false;
    } else {
      this.formConf.fields = fields;
    }
    if (res.data.project) {
      this.formConf.title = res.data.project.name;
      document.title = res.data.project.name;
      this.formConf.description = res.data.project.describe;
    }
    this.formConf.logicShowRule = this.logicShowTriggerRule;
    // 主题数据
    if (res.data.userProjectTheme) {
      this.projectTheme = res.data.userProjectTheme;
      let { submitBtnText, showNumber, btnsColor } = res.data.userProjectTheme;
      if (submitBtnText) this.formConf.submitBtnText = submitBtnText;
      if (showNumber) this.formConf.showNumber = showNumber;
      if (btnsColor) this.formConf.submitBtnColor = btnsColor;
    }
    this.startParser = true;

    // }
    // })
  },
  methods: {
    // 分页显示数据处理
    pageShowHandle(allFields) {
      // 判断是否存在分页
      let index = allFields.findIndex((item) => {
        return item.typeId === "PAGINATION";
      });
      if (index < 0) {
        return;
      }
      let curr = 1;
      // 每页字段
      let perPageFields = {};
      // 分页字段数据
      let pageFields = {};
      allFields.forEach((item) => {
        let fields = _.get(perPageFields, curr);
        if (item.typeId === "PAGINATION") {
          _.set(pageFields, curr, item);
          if (fields) {
            item.currPageNum = curr++;
          }
        } else {
          if (!fields || fields == undefined) {
            fields = new Array();
          }
          fields.push(item);
          _.set(perPageFields, curr, fields);
        }
      });
      let len = _.keys(perPageFields).length;
      // 计算页数 添加分页
      _.keys(perPageFields).forEach((key) => {
        let pageItem = _.get(pageFields, key);
        if (pageItem) {
          let fields = _.get(perPageFields, key);
          pageItem.totalPageNum = len;
          fields.push(pageItem);
          _.set(perPageFields, key, fields);
        }
      });
      this.perPageFields = perPageFields;
    },
    /**
     * 处理逻辑显示数据
     */
    logicShowTriggerHandle(logicItem) {
      if (!logicItem) {
        return;
      }
      // 建立触发关系 该字段值发生变化时 哪些问题需要进行逻辑判断 确定是否显示
      logicItem.conditionList.forEach((item) => {
        if (Object.keys(item).length === 0) {
          return;
        }
        let rules = this.logicShowTriggerRule[item.formItemId];
        if (!rules) {
          rules = new Array();
        }
        rules.push({
          // 触发的字段
          triggerFormItemId: logicItem.formItemId,
          logicExpression: getExpression(
            logicItem.conditionList,
            logicItem.expression
          ),
        });
        this.logicShowTriggerRule[item.formItemId] = rules;
      });
    },
    // 统一处理axios请求
    queryLogicItemList() {
      return new Promise((resolve, reject) => {
        this.$api
          .get("/user/project/logic/list", {
            params: { projectKey: this.formConf.projectKey },
          })
          .then((res) => {
            resolve(res);
          })
          .catch((err) => {
            reject(err);
          });
      });
    },
    prevPage(params) {
      this.switchPage(params.page - 1, params);
    },
    nextPage(params) {
      this.switchPage(params.page + 1, params);
    },
    switchPage(page, params) {
      let { labelFormModel, formModel } = params;
      this.formModel = formModel;
      this.labelFormModel = labelFormModel;
      this.formConf.formBtns = _.keys(this.perPageFields).length == page;
      this.formConf.fields = _.get(this.perPageFields, page);
      this.parserKey = +new Date();
    },
    submitForm(data) {
      this.$emit("submit", data);
    },
  },
};
</script>

<style lang="scss">
@import "@/assets/styles/elementui-mobile.scss";
.project-form {
  margin: 15px auto;
  width: 800px;
  padding: 15px;
  background-repeat: repeat;
  background-color: rgba(229, 239, 247, 0.87);
}
.project-form .describe-html img {
  max-width: 780px;
  margin: 0px;
}

.project-body::-webkit-scrollbar {
  width: 0 !important;
  background: transparent;
}

.project-body {
  -ms-overflow-style: none;
  overflow: -moz-scrollbars-none;
}

.logo-img {
  max-height: 120px;
}

.submit-btn-form-item {
  text-align: left;
}

.submit-btn-form-item button {
  width: 20%;
}

@media screen and (max-width: 750px) {
  .project-form {
    margin: 0;
    width: 100% !important;
    background-color: white;
  }
  .logo-img {
    max-height: 2.94rem;
  }
  .submit-btn-form-item {
    text-align: center;
  }
  .submit-btn-form-item button {
    width: 80%;
  }
  .project-form .describe-html img {
    width: 95vw !important;
  }
}
</style>
