import path from 'node:path'
import type { OverflowAuditResult } from './overflow-audit.ts'
import type { StaticOverflowResult } from './static-overflow.ts'

const overflowTolerance = 2

export function formatOverflowAuditResult(result: OverflowAuditResult, cwd = process.cwd()) {
  const lines: string[] = []
  for (const issue of result.issues) {
    const dimensions = [
      issue.vertical > overflowTolerance ? `纵向 ${issue.vertical}px` : '',
      issue.horizontal > overflowTolerance ? `横向 ${issue.horizontal}px` : '',
    ].filter(Boolean).join('、')
    const heading = issue.heading ? `（${issue.heading}）` : ''
    lines.push(`WARN  ${path.relative(cwd, issue.deck.entry)}: 第 ${issue.slide} 页${heading}内容溢出：${dimensions}；放映时可上下滚动，请优先拆页或精简内容`)
  }
  for (const error of result.errors)
    lines.push(`WARN  ${path.relative(cwd, error.deck.entry)}: 无法完成内容溢出检查：${error.message}`)
  if (!lines.length)
    lines.push('内容边界检查通过：未发现溢出')
  return lines
}

export function overflowAuditFingerprint(result: OverflowAuditResult) {
  return JSON.stringify({
    errors: result.errors.map(error => [error.deck.entry, error.message]),
    issues: result.issues.map(issue => [
      issue.deck.entry,
      issue.slide,
      issue.heading,
      issue.horizontal,
      issue.vertical,
    ]),
  })
}

export function formatStaticOverflowResult(result: StaticOverflowResult, cwd = process.cwd()) {
  const lines: string[] = []
  for (const issue of result.issues) {
    const directions = issue.directions
      .map(direction => direction === 'vertical' ? '纵向' : '横向')
      .join('、')
    const heading = issue.heading ? `（${issue.heading}）` : ''
    lines.push(`WARN  ${path.relative(cwd, issue.deck.entry)}: 第 ${issue.slide} 页${heading}存在静态${directions}溢出风险：${issue.reason}；请优先拆页或精简内容（最终以 build 渲染检查为准）`)
  }
  for (const error of result.errors)
    lines.push(`WARN  ${path.relative(cwd, error.deck.entry)}: 无法完成静态内容检查：${error.message}`)
  if (!lines.length)
    lines.push('静态内容检查通过：未发现明显溢出风险（最终以 build 渲染检查为准）')
  return lines
}

export function staticOverflowFingerprint(result: StaticOverflowResult) {
  return JSON.stringify({
    errors: result.errors.map(error => [error.deck.entry, error.message]),
    issues: result.issues.map(issue => [
      issue.deck.entry,
      issue.slide,
      issue.heading,
      issue.directions,
      issue.reason,
    ]),
  })
}