/* eslint-disable max-len */
import ruleTrigger from './ruleTrigger'
let confGlobal
let someSpanIsNot24
export function dialogWrapper(str) {
  return `
    ${str}
    
      取消
      确定
    
  `
}
export function vueTemplate(str) {
  return `
    
      ${str}
    
  `
}
export function vueScript(str) {
  return ``
}
export function cssStyle(cssStr) {
  return ``
}
function buildFormTemplate(scheme, child, type) {
  let labelPosition = ''
  if (scheme.labelPosition !== 'right') {
    labelPosition = `label-position="${scheme.labelPosition}"`
  }
  const disabled = scheme.disabled ? `:disabled="${scheme.disabled}"` : ''
  let str = `
      ${child}
      ${buildFromBtns(scheme, type)}
    `
  if (someSpanIsNot24) {
    str = `
        ${str}
      `
  }
  return str
}
function buildFromBtns(scheme, type) {
  let str = ''
  if (scheme.formBtns && type === 'file') {
    str = `
          提交
          重置
        `
    if (someSpanIsNot24) {
      str = `
          ${str}
        `
    }
  }
  return str
}
// span不为24的用el-col包裹
function colWrapper(scheme, str) {
  if (someSpanIsNot24 || scheme.__config__.span !== 24) {
    return `
      ${str}
    `
  }
  return str
}
// 生成`vue template`代码
const layouts = {
  // 
  //   
  //     
  //   
  // 
  colFormItem(scheme, parent) {
    // {tag: 'el-select', formId: 105, label: '下拉选择', labelWidth: null, layout: 'colFormItem', renderKey: 1589274226431, required: true, span: 24}
    const config = scheme.__config__
    // 标题宽度,比如:`label-width="0"`
    let labelWidth = ''
    // 标题,比如:`label="下拉选择"`
    let label = `label="${config.label}"`
    // 如果配置了标题宽度
    if (config.labelWidth && config.labelWidth !== confGlobal.labelWidth) {
      labelWidth = `label-width="${config.labelWidth}px"`
    }
    // 如果不显示标题
    if (config.showLabel === false) {
      labelWidth = 'label-width="0"'
      label = ''
    }
    // 校验相关
    const required = !ruleTrigger[config.tag] && config.required ? 'required' : ''
    // 生成组件的`vue template`代码:
    // 
    //   
    // 
    const tagDom = tags[config.tag] ? tags[config.tag](scheme, parent) : null
    // 用``包裹组件
    let str = `
        ${tagDom}
      `
    // span不为24的用el-col包裹
    str = colWrapper(scheme, str)
    return str
  },
  // ?
  rowFormItem(scheme) {
    const config = scheme.__config__
    const type = scheme.type === 'default' ? '' : `type="${scheme.type}"`
    const justify = scheme.type === 'default' ? '' : `justify="${scheme.justify}"`
    const align = scheme.type === 'default' ? '' : `align="${scheme.align}"`
    const gutter = scheme.gutter ? `:gutter="${scheme.gutter}"` : ''
    const children = config.children.map(el => layouts[el.__config__.layout](el))
    let str = `
      ${children.join('\n')}
    `
    str = colWrapper(scheme, str)
    return str
  },
  // 
  //   标签1
  //   标签2
  // 
  tabsFormItem(scheme) {
    // {tag: 'el-tabs', formId: 102, label: '标签页', layout: 'tabsFormItem', renderKey: 1589357504315, span: 24}
    const config = scheme.__config__
    // 生成组件的`vue template`代码:
    // 
    //   标签1
    //   标签2
    // 
    const tagDom = tags[config.tag] ? tags[config.tag](scheme) : null
    // 用``包裹组件
    let str = tagDom
    // span不为24的用el-col包裹
    str = colWrapper(scheme, str)
    return str
  },
  // 生成表格的`vue template`代码
  // 
  //   
  //     
  //       
  //     
  //   
  //   
  //     
  //       新增
  //       编辑
  //       删除
  //     
  //   
  // 
  tableFormItem(tableComponent) {
    const columns = tableComponent.__slot__.columns.map(column => `
      
        
          ${layouts.tableColumnFormItem(column)}
        
      
    `)
    // console.log('columns', columns)
    let children = ''
    columns.forEach(column => {
      children += column
    })
    const str = `
      
        ${children}
        
          
            新增
            编辑
            删除
          
        
      
    `
    return str
  },
  // 生成表格的列
  // 
  //   
  //     
  //   
  // 
  tableColumnFormItem(scheme) {
    const config = scheme.__config__
    const tagDom = tags[config.tag] ? tags[config.tag](scheme) : null
    return tagDom
  },
  // 生成弹框
  dialogFormItem(scheme) {
    const config = scheme.__config__
    // const type = scheme.type === 'default' ? '' : `type="${scheme.type}"`
    // const justify = scheme.type === 'default' ? '' : `justify="${scheme.justify}"`
    // const align = scheme.type === 'default' ? '' : `align="${scheme.align}"`
    // const gutter = scheme.gutter ? `:gutter="${scheme.gutter}"` : ''
    const children = config.children.map(el => layouts[el.__config__.layout](el, scheme))
    // 表单代码
    let formStr = `
      ${children.join('\n')}
    `
    // ?
    formStr = colWrapper(scheme, formStr)
    // 对话框
    const dialog = `
      
        ${formStr}
        
      
    `
    // 按钮
    const button = `新增`
    // 表格列
    const tableColumns = scheme.__config__.children.map(child => {
      let html = ''
      // 单行文本、日期选择
      if (child.__config__.tag === 'el-input' || child.__config__.tag === 'el-date-picker') {
        html = ``
      // 下拉选择
      } else if (child.__config__.tag === 'el-select') {
        let spans = ''
        child.__slot__.options.forEach((option, index) => {
          if (index === 0) {
            spans += `${option.label}\n`
          } else {
            spans += `${option.label}\n`
          }
        })
        html = `
          
            
              ${spans}
            
          
        `
      }
      return html
    })
    // 表格
    const table = `
      
        ${tableColumns.join('\n')}
        
          
            编辑
            删除
          
        
      
    `
    return button + table + dialog
  }
}
// 生成组件的`vue template`代码
const tags = {
  // 二级折叠
  'el-input': (el, parent) => {
    // 初始化这些属性的值
    const {
      tag, disabled, vModel, clearable, placeholder, width
    } = attrBuilder(el, parent)
    const maxlength = el.maxlength ? `:maxlength="${el.maxlength}"` : ''
    const showWordLimit = el['show-word-limit'] ? 'show-word-limit' : ''
    const readonly = el.readonly ? 'readonly' : ''
    const prefixIcon = el['prefix-icon'] ? `prefix-icon='${el['prefix-icon']}'` : ''
    const suffixIcon = el['suffix-icon'] ? `suffix-icon='${el['suffix-icon']}'` : ''
    const showPassword = el['show-password'] ? 'show-password' : ''
    const type = el.type ? `type="${el.type}"` : ''
    const autosize = el.autosize && el.autosize.minRows
      ? `:autosize="{minRows: ${el.autosize.minRows}, maxRows: ${el.autosize.maxRows}}"`
      : ''
    let child = buildElInputChild(el)
    if (child) child = `\n${child}\n` // 换行
    return `<${tag} ${vModel} ${type} ${placeholder} ${maxlength} ${showWordLimit} ${readonly} ${disabled} ${clearable} ${prefixIcon} ${suffixIcon} ${showPassword} ${autosize} ${width}>${child}${tag}>`
  },
  'el-input-number': el => {
    const {
      tag, disabled, vModel, placeholder
    } = attrBuilder(el)
    const controlsPosition = el['controls-position'] ? `controls-position=${el['controls-position']}` : ''
    const min = el.min ? `:min='${el.min}'` : ''
    const max = el.max ? `:max='${el.max}'` : ''
    const step = el.step ? `:step='${el.step}'` : ''
    const stepStrictly = el['step-strictly'] ? 'step-strictly' : ''
    const precision = el.precision ? `:precision='${el.precision}'` : ''
    return `<${tag} ${vModel} ${placeholder} ${step} ${stepStrictly} ${precision} ${controlsPosition} ${min} ${max} ${disabled}>${tag}>`
  },
  // 生成“下拉选择”的`vue template`代码
  // 
  //   
  // 
  'el-select': (el, parent) => {
    // console.log('el', el)
    // {
    //   tag: 'el-select',
    //   vModel: 'v-model="formData.field105"',
    //   clearable: 'clearable',
    //   placeholder: 'placeholder="请选择"',
    //   width: ':style="{width: '100%'}"',
    //   disabled: ''
    // }
    const {
      tag, disabled, vModel, clearable, placeholder, width
    } = attrBuilder(el, parent)
    const filterable = el.filterable ? 'filterable' : ''
    const multiple = el.multiple ? 'multiple' : ''
    // 返回`option`的`vue template`代码
    // 
    let child = el.inTable ? buildElSelectChildInTable(el) : buildElSelectChild(el)
    // 换行
    if (child) child = `\n${child}\n`
    return `<${tag} ${vModel} ${placeholder} ${disabled} ${multiple} ${filterable} ${clearable} ${width}>${child}${tag}>`
  },
  'el-radio-group': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const size = `size="${el.size}"`
    let child = buildElRadioGroupChild(el)
    if (child) child = `\n${child}\n` // 换行
    return `<${tag} ${vModel} ${size} ${disabled}>${child}${tag}>`
  },
  'el-checkbox-group': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const size = `size="${el.size}"`
    const min = el.min ? `:min="${el.min}"` : ''
    const max = el.max ? `:max="${el.max}"` : ''
    let child = buildElCheckboxGroupChild(el)
    if (child) child = `\n${child}\n` // 换行
    return `<${tag} ${vModel} ${min} ${max} ${size} ${disabled}>${child}${tag}>`
  },
  'el-switch': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const activeText = el['active-text'] ? `active-text="${el['active-text']}"` : ''
    const inactiveText = el['inactive-text'] ? `inactive-text="${el['inactive-text']}"` : ''
    const activeColor = el['active-color'] ? `active-color="${el['active-color']}"` : ''
    const inactiveColor = el['inactive-color'] ? `inactive-color="${el['inactive-color']}"` : ''
    const activeValue = el['active-value'] !== true ? `:active-value='${JSON.stringify(el['active-value'])}'` : ''
    const inactiveValue = el['inactive-value'] !== false ? `:inactive-value='${JSON.stringify(el['inactive-value'])}'` : ''
    return `<${tag} ${vModel} ${activeText} ${inactiveText} ${activeColor} ${inactiveColor} ${activeValue} ${inactiveValue} ${disabled}>${tag}>`
  },
  'el-cascader': el => {
    const {
      tag, disabled, vModel, clearable, placeholder, width
    } = attrBuilder(el)
    const options = el.options ? `:options="${el.__vModel__}Options"` : ''
    const props = el.props ? `:props="${el.__vModel__}Props"` : ''
    const showAllLevels = el['show-all-levels'] ? '' : ':show-all-levels="false"'
    const filterable = el.filterable ? 'filterable' : ''
    const separator = el.separator === '/' ? '' : `separator="${el.separator}"`
    return `<${tag} ${vModel} ${options} ${props} ${width} ${showAllLevels} ${placeholder} ${separator} ${filterable} ${clearable} ${disabled}>${tag}>`
  },
  'el-slider': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const min = el.min ? `:min='${el.min}'` : ''
    const max = el.max ? `:max='${el.max}'` : ''
    const step = el.step ? `:step='${el.step}'` : ''
    const range = el.range ? 'range' : ''
    const showStops = el['show-stops'] ? `:show-stops="${el['show-stops']}"` : ''
    return `<${tag} ${min} ${max} ${step} ${vModel} ${range} ${showStops} ${disabled}>${tag}>`
  },
  'el-time-picker': el => {
    const {
      tag, disabled, vModel, clearable, placeholder, width
    } = attrBuilder(el)
    const startPlaceholder = el['start-placeholder'] ? `start-placeholder="${el['start-placeholder']}"` : ''
    const endPlaceholder = el['end-placeholder'] ? `end-placeholder="${el['end-placeholder']}"` : ''
    const rangeSeparator = el['range-separator'] ? `range-separator="${el['range-separator']}"` : ''
    const isRange = el['is-range'] ? 'is-range' : ''
    const format = el.format ? `format="${el.format}"` : ''
    const valueFormat = el['value-format'] ? `value-format="${el['value-format']}"` : ''
    const pickerOptions = el['picker-options'] ? `:picker-options='${JSON.stringify(el['picker-options'])}'` : ''
    return `<${tag} ${vModel} ${isRange} ${format} ${valueFormat} ${pickerOptions} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${disabled}>${tag}>`
  },
  'el-date-picker': (el, parent) => {
    const {
      tag, disabled, vModel, clearable, placeholder, width
    } = attrBuilder(el, parent)
    const startPlaceholder = el['start-placeholder'] ? `start-placeholder="${el['start-placeholder']}"` : ''
    const endPlaceholder = el['end-placeholder'] ? `end-placeholder="${el['end-placeholder']}"` : ''
    const rangeSeparator = el['range-separator'] ? `range-separator="${el['range-separator']}"` : ''
    const format = el.format ? `format="${el.format}"` : ''
    const valueFormat = el['value-format'] ? `value-format="${el['value-format']}"` : ''
    const type = el.type === 'date' ? '' : `type="${el.type}"`
    const readonly = el.readonly ? 'readonly' : ''
    return `<${tag} ${type} ${vModel} ${format} ${valueFormat} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${readonly} ${disabled}>${tag}>`
  },
  'el-rate': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const max = el.max ? `:max='${el.max}'` : ''
    const allowHalf = el['allow-half'] ? 'allow-half' : ''
    const showText = el['show-text'] ? 'show-text' : ''
    const showScore = el['show-score'] ? 'show-score' : ''
    return `<${tag} ${vModel} ${max} ${allowHalf} ${showText} ${showScore} ${disabled}>${tag}>`
  },
  'el-color-picker': el => {
    const {tag, disabled, vModel} = attrBuilder(el)
    const size = `size="${el.size}"`
    const showAlpha = el['show-alpha'] ? 'show-alpha' : ''
    const colorFormat = el['color-format'] ? `color-format="${el['color-format']}"` : ''
    return `<${tag} ${vModel} ${size} ${showAlpha} ${colorFormat} ${disabled}>${tag}>`
  },
  'el-upload': el => {
    const {tag} = el.__config__
    const disabled = el.disabled ? ':disabled=\'true\'' : ''
    const action = el.action ? `:action="${el.__vModel__}Action"` : ''
    const multiple = el.multiple ? 'multiple' : ''
    const listType = el['list-type'] !== 'text' ? `list-type="${el['list-type']}"` : ''
    const accept = el.accept ? `accept="${el.accept}"` : ''
    const name = el.name !== 'file' ? `name="${el.name}"` : ''
    const autoUpload = el['auto-upload'] === false ? ':auto-upload="false"' : ''
    const beforeUpload = `:before-upload="${el.__vModel__}BeforeUpload"`
    const fileList = `:file-list="${el.__vModel__}fileList"`
    const ref= `ref="${el.__vModel__}"`
    let child = buildElUploadChild(el)
    if (child) child = `\n${child}\n` // 换行
    return `<${tag} ${ref} ${fileList} ${action} ${autoUpload} ${multiple} ${beforeUpload} ${listType} ${accept} ${name} ${disabled}>${child}${tag}>`
  },
  // 生成“标签页”的`vue template`代码
  // 
  //   标签1
  //   标签2
  // 
  'el-tabs': el => {
    // ':style="{width: '100%'}"'
    const width = el.style && el.style.width ? ':style="{width: \'100%\', marginBottom: \'22px\'}"' : ''
    // 标签1
    // 标签2
    let children = ''
    const slot = el.__slot__
    if (slot && slot.tabPanes && slot.tabPanes.length) {
      slot.tabPanes.forEach((tabPane, index) => {
        children += `${tabPane.label}\n`
      })
    }
    return `${children}`
  }
}
// 生成组件的`vModel`属性
// {
//   tag: 'el-select',
//   vModel: 'v-model="formData.field105"',
//   clearable: 'clearable',
//   placeholder: 'placeholder="请选择"',
//   width: ':style="{width: '100%'}"',
//   disabled: ''
// }
function attrBuilder(el, parent) {
  // console.log('el', el)
  // console.log('parent', parent)
  const result = {
    tag: el.__config__.tag,
    vModel: `v-model="${confGlobal.formModel}.${el.__vModel__}"`,
    clearable: el.clearable ? 'clearable' : '',
    placeholder: el.placeholder ? `placeholder="${el.placeholder}"` : '',
    width: el.style && el.style.width ? ':style="{width: \'100%\'}"' : '',
    disabled: el.disabled ? ':disabled=\'true\'' : ''
  }
  // 如果该组件在表格中
  if (el.inTable) result.vModel = `v-model="scope.row.${el.__vModel__}"`
  // 如果该组件在弹框中
  else if (el.inDialog) result.vModel = `v-model="${parent.__special__.formModel}.${el.__vModel__}"`
  return result
}
// el-input 子级
function buildElInputChild(scheme) {
  const children = []
  const slot = scheme.__slot__
  if (slot && slot.prepend) {
    children.push(`${slot.prepend}`)
  }
  if (slot && slot.append) {
    children.push(`${slot.append}`)
  }
  return children.join('\n')
}
// el-select 子级
// 
function buildElSelectChild(scheme) {
  const children = []
  const slot = scheme.__slot__
  if (slot && slot.options && slot.options.length) {
    children.push(``)
  }
  return children.join('\n')
}
// el-select 子级
// 
// 
function buildElSelectChildInTable(scheme) {
  const children = []
  scheme.__slot__.options.forEach(option => {
    children.push(``)
  })
  return children.join('\n')
}
// el-radio-group 子级
function buildElRadioGroupChild(scheme) {
  const children = []
  const slot = scheme.__slot__
  const config = scheme.__config__
  if (slot && slot.options && slot.options.length) {
    const tag = config.optionType === 'button' ? 'el-radio-button' : 'el-radio'
    const border = config.border ? 'border' : ''
    children.push(`<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}${tag}>`)
  }
  return children.join('\n')
}
// el-checkbox-group 子级
function buildElCheckboxGroupChild(scheme) {
  const children = []
  const slot = scheme.__slot__
  const config = scheme.__config__
  if (slot && slot.options && slot.options.length) {
    const tag = config.optionType === 'button' ? 'el-checkbox-button' : 'el-checkbox'
    const border = config.border ? 'border' : ''
    children.push(`<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}${tag}>`)
  }
  return children.join('\n')
}
// el-upload 子级
function buildElUploadChild(scheme) {
  const list = []
  const config = scheme.__config__
  if (scheme['list-type'] === 'picture-card') list.push('')
  else list.push(`${config.buttonText}`)
  if (config.showTip) list.push(`
只能上传不超过 ${config.fileSize}${config.sizeUnit} 的${scheme.accept}文件
`)
  return list.join('\n')
}
/**
 * 组装html代码。【入口函数】
 * @param {Object} formConfig 整个表单配置
 * @param {String} type 生成类型,文件或弹窗等
 */
export function makeUpHtml(formConfig, type) {
  const htmlList = []
  confGlobal = formConfig
  // 判断布局是否都占满了24个栅格,以备后续简化代码结构
  someSpanIsNot24 = formConfig.fields.some(item => item.__config__.span !== 24)
  // 遍历渲染每个组件成html
  formConfig.fields.forEach(el => {
    htmlList.push(layouts[el.__config__.layout](el))
  })
  const htmlStr = htmlList.join('\n')
  // 将组件代码放进form标签
  let temp = buildFormTemplate(formConfig, htmlStr, type)
  // dialog标签包裹代码
  if (type === 'dialog') {
    temp = dialogWrapper(temp)
  }
  confGlobal = null
  return temp
}