$ErrorActionPreference = 'Continue'
$ProgressPreference = 'SilentlyContinue'
$maxRetries = 15
$script = 'C:\sanguo_vnpy_v2\scripts\data_platform\download_15m_xtdata.py'
$resultFile = 'C:\sanguo_vnpy_v2\data\minute_15\_result.json'
$logFile = 'C:\sanguo_vnpy_v2\data\minute_15_download.log'
$errFile = 'C:\sanguo_vnpy_v2\data\minute_15_download.err.log'
$wrapperLog = 'C:\sanguo_vnpy_v2\data\minute_15_wrapper.log'

function Log-W($m) {
    $line = "$(Get-Date -Format 'yyyy-MM-dd HH:mm:ss') $m"
    Add-Content -Path $wrapperLog -Value $line -Encoding UTF8
}

Log-W "WRAPPER START maxRetries=$maxRetries"
for ($i = 1; $i -le $maxRetries; $i++) {
    Log-W "ATTEMPT $i/$maxRetries starting python"
    if (Test-Path $errFile) { Clear-Content $errFile -EA SilentlyContinue }
    try {
        $p = Start-Process -FilePath 'C:\Python310\python.exe' `
            -ArgumentList '-X utf8', $script `
            -WindowStyle Hidden `
            -RedirectStandardOutput $logFile `
            -RedirectStandardError $errFile `
            -Wait -PassThru
        $ec = if ($null -ne $p.ExitCode) { $p.ExitCode } else { -999 }
    } catch {
        $ec = -998
        Log-W "Start-Process exception: $_"
    }
    Log-W "ATTEMPT $i exited code=$ec"

    if (Test-Path $resultFile) {
        Log-W "_result.json EXISTS - DONE"
        break
    }
    Log-W "no result yet, sleeping 8s before retry..."
    Start-Sleep -Seconds 8
}
Log-W "WRAPPER EXIT"