export class NumberKeyBoardStyle {
  private static instance: NumberKeyBoardStyle
  //重写所有点击事件 慎用 参数一为下标 参数二为当前textInputValue的值
  rebuildAllClick?: (_: string, __: number) => void
  private border: BorderOptions = { width: 1, color: '#FF1A7DD8' }
  private borderRadius: Length | BorderRadiuses | LocalizedBorderRadiuses = 6
  private commonButtonBackgroundColor: ResourceColor = Color.White
  // 0的背景颜色
  private zeroBackGround: ResourceColor = '#FFACD7FF'
  // 完成的背景颜色
  private finishBackGround: ResourceColor = '#FF186EBD'
  // 删除按钮的图标
  private deleteIcon: ResourceStr = $r('app.media.app_icon')
  // 完成按钮的text
  private finishText: ResourceStr = '完成'
  private rowsGap: Length = 4.62
  private columnsGap: Length = 4.62
  // 大按钮的高
  private longHeight: Length = 101.69
  // 普通按钮的高
  private shortHeight: Length = 48.59
  // 字体样式
  private fontSize: number = 20
  private fonsWeight: number = 500
  private fontFamily: string = 'Source Han Sans SC'

  constructor() {
    if (!NumberKeyBoardStyle.instance) {
      NumberKeyBoardStyle.instance = this
    }
    return NumberKeyBoardStyle.instance
  }

  getFontSize() {
    return this.fontSize
  }

  setFontSize(fontSize: number) {
    this.fontSize = fontSize
    return this
  }

  getFontWeight() {
    return this.fonsWeight
  }

  setFontWeight(fontWeight: number) {
    this.fonsWeight = fontWeight
    return this
  }

  getFontFamily() {
    return this.fontFamily
  }

  setFontFamily(fontFamily: string) {
    this.fontFamily = fontFamily
    return this
  }

  getShortHeight() {
    return this.shortHeight
  }

  setShortHeight(height: Length) {
    this.shortHeight = height
    return this
  }

  getLongHeight() {
    return this.longHeight
  }

  setLongHeight(height: Length) {
    this.longHeight = height
    return this
  }

  getRowsGap() {
    return this.rowsGap
  }

  setColumnsGap(columnsGap: number) {
    this.columnsGap = columnsGap
    return this
  }

  setRowsGap(rowsGap: number) {
    this.rowsGap = rowsGap
    return this
  }

  getColumnsGap() {
    return this.columnsGap
  }

  getBorder() {
    return this.border
  }

  setBorder(border: BorderOptions) {
    this.border = border
    return this
  }

  getBorderRadius() {
    return this.borderRadius
  }

  setBorderRadius(borderRadius: Length | BorderRadiuses | LocalizedBorderRadiuses) {
    this.borderRadius = borderRadius
    return this
  }

  getZeroBackGround() {
    return this.zeroBackGround
  }

  setZeroBackGround(zeroBackGround: ResourceColor) {
    this.zeroBackGround = zeroBackGround
    return this
  }

  getFinishBackGround() {
    return this.finishBackGround
  }

  setFinishBackGround(finishBackGround: ResourceColor) {
    this.finishBackGround = finishBackGround
    return this
  }

  getDeleteIcon() {
    return this.deleteIcon
  }

  setDeleteIcon(deleteIcon: ResourceStr) {
    this.deleteIcon = deleteIcon
    return this
  }

  getCommonButtonBackground() {
    return this.commonButtonBackgroundColor
  }

  setCommonButtonBackground(commonButtonBackground: ResourceColor) {
    this.commonButtonBackgroundColor = commonButtonBackground
    return this
  }

  getFinishText() {
    return this.finishText
  }

  setFinishText(finishText: ResourceStr) {
    this.finishText = finishText
    return this
  }
}

@Extend(Text)
function TextStyle(style: NumberKeyBoardStyle) {
  .fontSize(style.getFontSize())
  .fontWeight(style.getFontWeight())
  .fontFamily(style.getFontFamily())
}


/**
 * @description 自定义数字按钮键盘
 */
@Component
export struct NumberKeyBoard {
  //初始值
  @Prop @Require textInputValue: string
  //最大输入数
  maxInputNum: number = 5
  //样式设置 支持链式设置 允许动态修改 但是如果在父组件使用链式调用需要重新赋值,因为链式调用会导致装饰器失效
  @Prop keyBoardStyle: NumberKeyBoardStyle
  //完成字体的样式 自己实现AttributeModifier<TextAttribute>来传 AttributeModifier不支持响应式 如果需要动态刷新需要同步更改其它具有响应式的属性
  textModifier?: AttributeModifier<TextAttribute>
  //grid计算器的排序规则
  private layoutOptions: GridLayoutOptions = {
    regularSize: [1, 1],
    irregularIndexes: Array.from<undefined>({ length: 13 }).map((_,
      index) => index),
    onGetIrregularSizeByIndex: (index: number) => {
      if (index < 10) {
        if (index == 3) {
          return [2, 3]
        }
        return [1, 3]
      } else if (index == 10) {
        return [2, 3]
      } else if (index == 11) {
        return [1, 4]
      } else {
        return [1, 5]
      }

    }
  };
  //点击完成所需要的逻辑
  onFinishClick = (_: string) => {
  }
  //输入值变化
  onTextInputValueChange = (_: string) => {
  }

  @Styles
  pressStyles() {
    .opacity(0.7)
  }

  @Styles
  normalStyles() {
    .opacity(1)
  }

  build() {
    Grid(undefined, this.layoutOptions) {
      ForEach(Array.from({ length: 13 }), (_: undefined, index) => {
        GridItem() {
          Column() {
            if (index == 3) {
              Image(this.keyBoardStyle.getDeleteIcon())
                .width(20)
                .aspectRatio(2)
            } else if (index == 10) {
              Text(this.keyBoardStyle.getFinishText())
                .TextStyle(this.keyBoardStyle)
                .attributeModifier(this.textModifier)
            } else if (index == 11) {
              Text('0')
                .TextStyle(this.keyBoardStyle)
            } else if (index == 12) {
              Text('.')
                .TextStyle(this.keyBoardStyle)
            } else if (index < 3) {
              Text((index + 1).toString())
                .TextStyle(this.keyBoardStyle)
            } else {
              Text(index.toString())
                .TextStyle(this.keyBoardStyle)
            }
          }
          .backgroundColor(index == 11 ? this.keyBoardStyle.getZeroBackGround() :
            index == 10 ? this.keyBoardStyle.getFinishBackGround() : this.keyBoardStyle.getCommonButtonBackground())
          .width('100%')
          .height(this.calcGridItemHeight(index))
          .borderRadius(this.keyBoardStyle.getBorderRadius())
          .justifyContent(FlexAlign.Center)
          .border(this.keyBoardStyle.getBorder())
          .stateStyles({
            pressed: this.pressStyles,
            normal: this.normalStyles
          })
          .onClick(() => {
            if (this.keyBoardStyle.rebuildAllClick) {
              this.keyBoardStyle.rebuildAllClick(this.textInputValue, index)
              return
            }
            if (index == 3) {
              if (this.textInputValue.length > 0) {
                this.textInputValue = this.textInputValue.slice(0, this.textInputValue.length - 1)
              }
              if (this.textInputValue == '') {
                this.textInputValue = '0'
              }

              this.onTextInputValueChange(this.textInputValue)
              return
            }
            if (index == 10) {
              this.onFinishClick(this.textInputValue)
              return
            }
            if (this.textInputValue.length >= this.maxInputNum) {
              if (this.textInputValue.length > this.maxInputNum) {
                //裁剪为最大长度
                this.textInputValue = this.textInputValue.slice(0, this.maxInputNum)
              }
              return
            }

            if (index == 11) {
              if (parseInt(this.textInputValue) > 0) {
                this.textInputValue = this.textInputValue.concat('0')
              }
            } else if (index == 12) {
              if (!this.textInputValue.includes('.')) {
                this.textInputValue = this.textInputValue.concat('.')
              }
            } else if (index < 3) {
              if (parseInt(this.textInputValue) > 0) {
                this.textInputValue = this.textInputValue.concat((index + 1).toString())
              } else {
                this.textInputValue = (index + 1).toString()
              }

            } else {
              if (parseInt(this.textInputValue) > 0|| this.textInputValue.includes('.')) {
                this.textInputValue = this.textInputValue.concat(index.toString())
              } else {
                this.textInputValue = index.toString()
              }
            }

            this.onTextInputValueChange(this.textInputValue)

          })
        }
      })
    }
    .rowsGap(this.keyBoardStyle.getRowsGap())
    .columnsGap(this.keyBoardStyle.getColumnsGap())
    .columnsTemplate('repeat(12, 1fr)')
    // .layoutWeight(1)
    .width('100%')
  }

  //计算渲染grid的高
  private calcGridItemHeight(index: number): Length {
    if (index == 3 || index == 10) {
      return this.keyBoardStyle.getLongHeight()
    } else {
      return this.keyBoardStyle.getShortHeight()
    }
  }
}