text: import { isArray } from 'util'
  import { exportDefault, titleCase } from '@/utils/index'
  import { trigger } from './config'
  
  const units = {
    KB: '1024',
    MB: '1024 / 1024',
    GB: '1024 / 1024 / 1024'
  }
  let confGlobal
  const inheritAttrs = {
    file: '',
    dialog: 'inheritAttrs: false,'
  }
  
  
  export function makeUpJs(conf, type) {
    confGlobal = conf = JSON.parse(JSON.stringify(conf))
    const dataList = []
    const ruleList = []
    const optionsList = []
    const propsList = []
    const methodList = mixinMethod(type)
    const uploadVarList = []
  
    conf.fields.forEach(el => {
      buildAttributes(el, dataList, ruleList, optionsList, methodList, propsList, uploadVarList)
    })
  
    const script = buildexport(
      conf,
      type,
      dataList.join('\n'),
      ruleList.join('\n'),
      optionsList.join('\n'),
      uploadVarList.join('\n'),
      propsList.join('\n'),
      methodList.join('\n')
    )
    confGlobal = null
    return script
  }
  
  function buildAttributes(el, dataList, ruleList, optionsList, methodList, propsList, uploadVarList) {
    buildData(el, dataList)
    buildRules(el, ruleList)
  
    if (el.options && el.options.length) {
      buildOptions(el, optionsList)
      if (el.dataType === 'dynamic') {
        const model = `${el.vModel}Options`
        const options = titleCase(model)
        buildOptionMethod(`get${options}`, model, methodList)
      }
    }
  
    if (el.props && el.props.props) {
      buildProps(el, propsList)
    }
  
    if (el.action && el.tag === 'el-upload') {
      uploadVarList.push(
        `${el.vModel}Action: '${el.action}',
        ${el.vModel}fileList: [],`
      )
      methodList.push(buildBeforeUpload(el))
      if (!el['auto-upload']) {
        methodList.push(buildSubmitUpload(el))
      }
    }
  
    if (el.children) {
      el.children.forEach(el2 => {
        buildAttributes(el2, dataList, ruleList, optionsList, methodList, propsList, uploadVarList)
      })
    }
  }
  
  function mixinMethod(type) {
    const list = []; const
      minxins = {
        file: confGlobal.formBtns ? {
          submitForm: `submitForm() {
          this.$refs['${confGlobal.formRef}'].validate(valid => {
            if(!valid) return
            // TODO 提交表单
          })
        },`,
          resetForm: `resetForm() {
          this.$refs['${confGlobal.formRef}'].resetFields()
        },`
        } : null,
        dialog: {
          onOpen: 'onOpen() {},',
          onClose: `onClose() {
          this.$refs['${confGlobal.formRef}'].resetFields()
        },`,
          close: `close() {
          this.$emit('update:visible', false)
        },`,
          handleConfirm: `handleConfirm() {
          this.$refs['${confGlobal.formRef}'].validate(valid => {
            if(!valid) return
            this.close()
          })
        },`
        }
      }
  
    const methods = minxins[type]
    if (methods) {
      Object.keys(methods).forEach(key => {
        list.push(methods[key])
      })
    }
  
    return list
  }
  
  function buildData(conf, dataList) {
    if (conf.vModel === undefined) return
    let defaultValue
    if (typeof (conf.defaultValue) === 'string' && !conf.multiple) {
      defaultValue = `'${conf.defaultValue}'`
    } else {
      defaultValue = `${JSON.stringify(conf.defaultValue)}`
    }
    dataList.push(`${conf.vModel}: ${defaultValue},`)
  }
  
  function buildRules(conf, ruleList) {
    if (conf.vModel === undefined) return
    const rules = []
    if (trigger[conf.tag]) {
      if (conf.required) {
        const type = isArray(conf.defaultValue) ? 'type: \'array\',' : ''
        let message = isArray(conf.defaultValue) ? `请至少选择一个${conf.vModel}` : conf.placeholder
        if (message === undefined) message = `${conf.label}不能为空`
        rules.push(`{ required: true, ${type} message: '${message}', trigger: '${trigger[conf.tag]}' }`)
      }
      if (conf.regList && isArray(conf.regList)) {
        conf.regList.forEach(item => {
          if (item.pattern) {
            rules.push(`{ pattern: ${eval(item.pattern)}, message: '${item.message}', trigger: '${trigger[conf.tag]}' }`)
          }
        })
      }
      ruleList.push(`${conf.vModel}: [${rules.join(',')}],`)
    }
  }
  
  function buildOptions(conf, optionsList) {
    if (conf.vModel === undefined) return
    if (conf.dataType === 'dynamic') { conf.options = [] }
    const str = `${conf.vModel}Options: ${JSON.stringify(conf.options)},`
    optionsList.push(str)
  }
  
  function buildProps(conf, propsList) {
    if (conf.dataType === 'dynamic') {
      conf.valueKey !== 'value' && (conf.props.props.value = conf.valueKey)
      conf.labelKey !== 'label' && (conf.props.props.label = conf.labelKey)
      conf.childrenKey !== 'children' && (conf.props.props.children = conf.childrenKey)
    }
    const str = `${conf.vModel}Props: ${JSON.stringify(conf.props.props)},`
    propsList.push(str)
  }
  
  function buildBeforeUpload(conf) {
    const unitNum = units[conf.sizeUnit]; let rightSizeCode = ''; let acceptCode = ''; const
      returnList = []
    if (conf.fileSize) {
      rightSizeCode = `let isRightSize = file.size / ${unitNum} < ${conf.fileSize}
      if(!isRightSize){
        this.$message.error('文件大小超过 ${conf.fileSize}${conf.sizeUnit}')
      }`
      returnList.push('isRightSize')
    }
    if (conf.accept) {
      acceptCode = `let isAccept = new RegExp('${conf.accept}').test(file.type)
      if(!isAccept){
        this.$message.error('应该选择${conf.accept}类型的文件')
      }`
      returnList.push('isAccept')
    }
    const str = `${conf.vModel}BeforeUpload(file) {
      ${rightSizeCode}
      ${acceptCode}
      return ${returnList.join('&&')}
    },`
    return returnList.length ? str : ''
  }
  
  function buildSubmitUpload(conf) {
    const str = `submitUpload() {
      this.$refs['${conf.vModel}'].submit()
    },`
    return str
  }
  
  function buildOptionMethod(methodName, model, methodList) {
    const str = `${methodName}() {
      // TODO 发起请求获取数据
      this.${model}
    },`
    methodList.push(str)
  }
  
  function buildexport(conf, type, data, rules, selectOptions, uploadVar, props, methods) {
    const str = `${exportDefault}{
    ${inheritAttrs[type]}
    components: {},
    props: [],
    data () {
      return {
        ${conf.formModel}: {
          ${data}
        },
        ${conf.formRules}: {
          ${rules}
        },
        ${uploadVar}
        ${selectOptions}
        ${props}
      }
    },
    computed: {},
    watch: {},
    created () {},
    mounted () {},
    methods: {
      ${methods}
    }
  }`
    return str
  }
  