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import { Chalk } from 'chalk'

export type TableColumn = { header: string; right?: boolean }

// Visible width, ignoring ANSI color codes, so padding stays aligned.

function vlen(s: string): number {

// eslint-disable-next-line no-control-regex

return s.replace(/\[[0-9;]*m/g, '').length

}

// Box-drawing table with roomy 2-space cell padding, right-aligned numeric

// columns, and optional bold rows (e.g. a Combined/total row). Color is

// auto-detected; pass color:false to force plain text.

export function renderTable(

columns: TableColumn[],

rows: string[][],

opts: { color?: boolean; boldRows?: ReadonlySet<number> } = {},

): string {

const c = new Chalk(opts.color === false ? { level: 0 } : {})

const bold = opts.boldRows ?? new Set<number>()

const widths = columns.map((col, i) => Math.max(vlen(col.header), ...rows.map((r) => vlen(r[i] ?? ''))))

const pad = (s: string, w: number, right?: boolean): string => {

const fill = ' '.repeat(Math.max(0, w - vlen(s)))

return right ? fill + s : s + fill

}

const gap = ' '

const sep = gap + '│' + gap

const bar = (l: string, mid: string, r: string): string => l + widths.map((w) => '─'.repeat(w + 4)).join(mid) + r

const line = (cells: string[], makeBold: boolean): string =>

'│' + gap + columns.map((col, i) => {

const padded = pad(cells[i] ?? '', widths[i]!, col.right)

return makeBold ? c.bold(padded) : padded

}).join(sep) + gap + '│'

return [

bar('┌', '┬', '┐'),

line(columns.map((col) => col.header), false),

bar('├', '┼', '┤'),

...rows.map((r, i) => line(r, bold.has(i))),

bar('└', '┴', '┘'),

].join('\n')

}

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