import type { CSSObject } from '../../_util/cssinjs'
import type { FullToken, GenerateStyle } from '../../theme/internal'
import { genComponentStyleHook, mergeToken } from '../../theme/internal'

export interface ComponentToken {
  imageWidth: number
  imageHeight: number
}

interface ResultToken extends FullToken<'Result'> {
  resultTitleFontSize: number
  resultSubtitleFontSize: number
  resultIconFontSize: number

  resultExtraMargin: string

  resultInfoIconColor: string
  resultSuccessIconColor: string
  resultWarningIconColor: string
  resultErrorIconColor: string
}

// ============================== Styles ==============================
const genBaseStyle: GenerateStyle<ResultToken> = (token): CSSObject => {
  const {
    componentCls,
    lineHeightHeading3,
    iconCls,
    padding,
    paddingXL,
    paddingXS,
    paddingLG,
    marginXS,
    lineHeight,
  } = token

  return {
    // Result
    [componentCls]: {
      padding: `${paddingLG * 2}px ${paddingXL}px`,

      // RTL
      '&-rtl': {
        direction: 'rtl',
      },
    },

    // Exception Status image
    [`${componentCls} ${componentCls}-image`]: {
      width: token.imageWidth,
      height: token.imageHeight,
      margin: 'auto',
    },

    [`${componentCls} ${componentCls}-icon`]: {
      marginBottom: paddingLG,
      textAlign: 'center',

      [`& > ${iconCls}`]: {
        fontSize: token.resultIconFontSize,
      },
    },

    [`${componentCls} ${componentCls}-title`]: {
      color: token.colorTextHeading,
      fontSize: token.resultTitleFontSize,
      lineHeight: lineHeightHeading3,
      marginBlock: marginXS,
      textAlign: 'center',
    },

    [`${componentCls} ${componentCls}-subtitle`]: {
      color: token.colorTextDescription,
      fontSize: token.resultSubtitleFontSize,
      lineHeight,
      textAlign: 'center',
    },

    [`${componentCls} ${componentCls}-content`]: {
      marginTop: paddingLG,
      padding: `${paddingLG}px ${padding * 2.5}px`,
      backgroundColor: token.colorFillAlter,
    },

    [`${componentCls} ${componentCls}-extra`]: {
      margin: token.resultExtraMargin,
      textAlign: 'center',

      '& > *': {
        marginInlineEnd: paddingXS,

        '&:last-child': {
          marginInlineEnd: 0,
        },
      },
    },
  }
}

const genStatusIconStyle: GenerateStyle<ResultToken> = (token) => {
  const { componentCls, iconCls } = token

  return {
    [`${componentCls}-success ${componentCls}-icon > ${iconCls}`]: {
      color: token.resultSuccessIconColor,
    },
    [`${componentCls}-error ${componentCls}-icon > ${iconCls}`]: {
      color: token.resultErrorIconColor,
    },
    [`${componentCls}-info ${componentCls}-icon > ${iconCls}`]: {
      color: token.resultInfoIconColor,
    },
    [`${componentCls}-warning ${componentCls}-icon > ${iconCls}`]: {
      color: token.resultWarningIconColor,
    },
  }
}

const genResultStyle: GenerateStyle<ResultToken> = (token) => [
  genBaseStyle(token),
  genStatusIconStyle(token),
]

// ============================== Export ==============================
const getStyle: GenerateStyle<ResultToken> = (token) => genResultStyle(token)

export default genComponentStyleHook(
  'Result',
  (token) => {
    const { paddingLG, fontSizeHeading3 } = token

    const resultSubtitleFontSize = token.fontSize
    const resultExtraMargin = `${paddingLG}px 0 0 0`

    const resultInfoIconColor = token.colorInfo
    const resultErrorIconColor = token.colorError
    const resultSuccessIconColor = token.colorSuccess
    const resultWarningIconColor = token.colorWarning

    const resultToken = mergeToken<ResultToken>(token, {
      resultTitleFontSize: fontSizeHeading3,
      resultSubtitleFontSize,
      resultIconFontSize: fontSizeHeading3 * 3,
      resultExtraMargin,
      resultInfoIconColor,
      resultErrorIconColor,
      resultSuccessIconColor,
      resultWarningIconColor,
    })

    return [getStyle(resultToken)]
  },
  {
    imageWidth: 250,
    imageHeight: 295,
  },
)
