$ErrorActionPreference = "Stop"

function Get-TaipeiNow {
  try {
    $tz = [TimeZoneInfo]::FindSystemTimeZoneById("Taipei Standard Time")
    return [TimeZoneInfo]::ConvertTime([DateTimeOffset]::Now, $tz)
  } catch {
    return [DateTimeOffset]::Now
  }
}

try {
  $now = Get-TaipeiNow
  $promptId = "P{0}" -f $now.ToString("yyyyMMdd-HHmmss")
  $promptRaw = $env:USER_PROMPT
  if ($null -eq $promptRaw) { $promptRaw = "" }

  # 截断过长的 prompt（避免意外记录展开的 #context）
  if ($promptRaw.Length -gt 20000) {
    $promptRaw = $promptRaw.Substring(0, 5000) + "`n[TRUNCATED: prompt too long; possible expanded #context]"
  }

  $summary = ($promptRaw -replace "\s+", " ").Trim()
  if ($summary.Length -gt 120) { $summary = $summary.Substring(0, 120) + "…" }
  if ([string]::IsNullOrWhiteSpace($summary)) { $summary = "(empty prompt)" }

  # CHANGE [2026-02-15] intent: 简化为每次直接写独立文件到 prompt_logs/，不再维护 prompt_log.md 中间文件
  $logDir = Join-Path "docs" "audit" "prompt_logs"
  $null = New-Item -ItemType Directory -Force -Path $logDir 2>$null

  $filename = "prompt_log_{0}.md" -f $now.ToString("yyyyMMdd_HHmmss")
  $targetLog = Join-Path $logDir $filename

  $timestamp = $now.ToString("yyyy-MM-dd HH:mm:ss zzz")
  $entry = @"
- [$promptId] $timestamp
  - summary: $summary
  - prompt:
``````text
$promptRaw
``````

"@

  Set-Content -Path $targetLog -Value $entry -Encoding UTF8

  # 保存 last prompt id 供下游 /audit 溯源
  $stateDir = ".kiro"
  $null = New-Item -ItemType Directory -Force -Path $stateDir 2>$null
  $lastPrompt = @{
    prompt_id = $promptId
    at = $now.ToString("o")
  } | ConvertTo-Json -Depth 4

  Set-Content -Path (Join-Path $stateDir ".last_prompt_id.json") -Value $lastPrompt -Encoding UTF8

  exit 0
} catch {
  # 不阻塞 prompt 提交
  exit 0
}