import type { DocsTableBorder } from "@/lib/drive/docs-table-types"

const BORDER_STYLE_MAP: Record<string, string> = {
  single: "solid",
  dashed: "dashed",
  dotted: "dotted",
  double: "double",
  dotDash: "dashed",
  dotDotDash: "dotted",
  none: "none",
  nil: "none",
}

export function docsTableBorderToCss(border: DocsTableBorder | string | null | undefined): string | null {
  if (!border) return null
  if (typeof border === "string") return border.trim() || null

  const style = BORDER_STYLE_MAP[border.style ?? ""] ?? "solid"
  if (style === "none") return "none"

  const sizePt = border.size ? Math.max(0.25, border.size / 8) : 0.75
  const color = border.color && border.color !== "auto" ? border.color : "#000000"
  return `${sizePt}pt ${style} ${color}`
}

export function buildDocsTableCellStyle(attrs: Record<string, unknown>): string | undefined {
  const parts: string[] = []

  const backgroundColor =
    typeof attrs.backgroundColor === "string" && attrs.backgroundColor ? attrs.backgroundColor : null
  if (backgroundColor) parts.push(`background-color: ${backgroundColor}`)

  const verticalAlign =
    attrs.verticalAlign === "top" || attrs.verticalAlign === "middle" || attrs.verticalAlign === "bottom"
      ? attrs.verticalAlign
      : null
  if (verticalAlign) parts.push(`vertical-align: ${verticalAlign}`)

  const borderTop = docsTableBorderToCss(attrs.borderTop as DocsTableBorder | string | null)
  const borderRight = docsTableBorderToCss(attrs.borderRight as DocsTableBorder | string | null)
  const borderBottom = docsTableBorderToCss(attrs.borderBottom as DocsTableBorder | string | null)
  const borderLeft = docsTableBorderToCss(attrs.borderLeft as DocsTableBorder | string | null)

  if (borderTop) parts.push(`border-top: ${borderTop}`)
  if (borderRight) parts.push(`border-right: ${borderRight}`)
  if (borderBottom) parts.push(`border-bottom: ${borderBottom}`)
  if (borderLeft) parts.push(`border-left: ${borderLeft}`)

  return parts.length ? parts.join("; ") : undefined
}

export function buildDocsTableStyle(attrs: Record<string, unknown>): string | undefined {
  const parts: string[] = []

  const alignment =
    attrs.alignment === "left" || attrs.alignment === "center" || attrs.alignment === "right"
      ? attrs.alignment
      : null
  if (alignment === "center") parts.push("margin-left: auto", "margin-right: auto")
  else if (alignment === "right") parts.push("margin-left: auto", "margin-right: 0")
  else if (alignment === "left") parts.push("margin-left: 0", "margin-right: auto")

  if (attrs.layout === "fixed") parts.push("table-layout: fixed")

  const cellSpacing = typeof attrs.cellSpacing === "number" ? attrs.cellSpacing : null
  if (cellSpacing && cellSpacing > 0) {
    const px = Math.round((cellSpacing / 20) * 96 / 72)
    parts.push(`border-spacing: ${px}px`)
  }

  return parts.length ? parts.join("; ") : undefined
}

export function buildDocsTableRowStyle(attrs: Record<string, unknown>): string | undefined {
  const rowHeight = typeof attrs.rowHeight === "string" ? attrs.rowHeight : null
  if (!rowHeight) return undefined
  return `height: ${rowHeight}`
}