/** 开发环境终端日志着色（ANSI），生产结构化日志不走此处 */

const ANSI = {
  reset: '\x1b[0m',
  bold: '\x1b[1m',
  dim: '\x1b[2m',
  red: '\x1b[31m',
  green: '\x1b[32m',
  yellow: '\x1b[33m',
  blue: '\x1b[34m',
  magenta: '\x1b[35m',
  cyan: '\x1b[36m',
  gray: '\x1b[90m',
} as const

export function isDevLogColorEnabled(stream?: { isTTY?: boolean }): boolean {
  if (process.env.NO_COLOR !== undefined && process.env.NO_COLOR !== '') return false
  const force = process.env.FORCE_COLOR
  if (force === '1' || force === 'true') return true
  if (force === '0' || force === 'false') return false
  return stream?.isTTY ?? process.stdout?.isTTY ?? false
}

function paint(text: string, ...styles: string[]): string {
  if (!isDevLogColorEnabled()) return text
  return `${styles.join('')}${text}${ANSI.reset}`
}

export function colorizeHttpStatus(status: number): string {
  if (status >= 500) return paint(String(status), ANSI.bold, ANSI.red)
  if (status >= 400) return paint(String(status), ANSI.bold, ANSI.yellow)
  if (status >= 300) return paint(String(status), ANSI.cyan)
  return paint(String(status), ANSI.bold, ANSI.green)
}

export interface DevSqlLogParts {
  tag?: string
  durationMs: number
  rowCount: number
  runnableSql: string
}

export function formatDevSqlLog(parts: DevSqlLogParts): string {
  const label = parts.tag ? `[SQL] ${parts.tag}` : '[SQL]'
  const header = [
    paint(label, ANSI.bold, ANSI.cyan),
    paint(`${parts.durationMs}ms`, ANSI.dim, ANSI.gray),
    paint('rows=', ANSI.dim, ANSI.gray) + paint(String(parts.rowCount), ANSI.blue),
  ].join(' ')
  const sql = paint(parts.runnableSql, ANSI.gray)
  return `${header}\n${sql}`
}

export interface DevApiLogParts {
  method: string
  path: string
  status: number
  durationMs: number
}

export function formatDevApiLog(parts: DevApiLogParts): string {
  return [
    paint('[API]', ANSI.bold, ANSI.magenta),
    paint(parts.method, ANSI.bold, ANSI.yellow),
    paint(parts.path, ANSI.cyan),
    '->',
    colorizeHttpStatus(parts.status),
    paint(`(${parts.durationMs}ms)`, ANSI.dim, ANSI.gray),
  ].join(' ')
}

export function formatDevBanner(message: string): string {
  return paint(message, ANSI.bold, ANSI.green)
}

export type DevLogLevel = 'info' | 'warn' | 'error'

export function formatDevAppLog(level: DevLogLevel, message: string, data?: unknown): string {
  const tag =
    level === 'error'
      ? paint('[ERROR]', ANSI.bold, ANSI.red)
      : level === 'warn'
        ? paint('[WARN]', ANSI.bold, ANSI.yellow)
        : paint('[INFO]', ANSI.bold, ANSI.blue)
  const body = paint(message, ANSI.reset)
  if (data === undefined || data === '') return `${tag} ${body}`
  const extra =
    typeof data === 'string'
      ? data
      : JSON.stringify(data, null, 2)
  return `${tag} ${body}\n${paint(extra, ANSI.dim, ANSI.gray)}`
}