#Requires -Version 5.1
<#
.SYNOPSIS
  Pre-flight validation for UiPath MISF Planner Download pilot (mirrors Python validate_config + output checks).
#>
param(
    [string]$ProjectRoot = (Resolve-Path (Join-Path $PSScriptRoot "..")).Path,
    [int]$ExpectedFacilities = 54,
    [switch]$CheckOutput
)

$ErrorActionPreference = "Stop"
$configPath = Join-Path $ProjectRoot "Input\input.xlsx"
$uipathProject = Join-Path $ProjectRoot "uipath\MISF_Planner_Download\project.json"
$today = Get-Date -Format "yyyy-MM-dd"

Write-Host "MISF UiPath pilot validation"
Write-Host "Project root: $ProjectRoot"

if (-not (Test-Path $configPath)) {
    Write-Error "Missing config: $configPath (copy Input\input.xlsx.example)"
}
if (-not (Test-Path $uipathProject)) {
    Write-Error "Missing UiPath project: $uipathProject"
}

# Run Python config validator if available
$pyValidate = Join-Path $ProjectRoot "scripts\validate_config.py"
if (Test-Path $pyValidate) {
    Write-Host "Running Python validate_config.py..."
    python $pyValidate
    if ($LASTEXITCODE -ne 0) { exit $LASTEXITCODE }
}

# Verify UiPath workflow files exist
$requiredWorkflows = @(
    "Main.xaml",
    "01_ReadConfig.xaml",
    "02_LoginPlanner.xaml",
    "03_ProcessFacility.xaml",
    "04_DownloadTaskAttachments.xaml",
    "05_SetTaskInProgress.xaml",
    "06_WriteSummary.xaml",
    "Helpers\GenerateTotp.xaml",
    "Helpers\SanitizeFolderName.xaml",
    "Selectors\PlannerSelectors.json"
)
$uipathDir = Join-Path $ProjectRoot "uipath\MISF_Planner_Download"
foreach ($wf in $requiredWorkflows) {
    $p = Join-Path $uipathDir $wf
    if (-not (Test-Path $p)) {
        Write-Error "Missing workflow file: $p"
    }
}
Write-Host "All UiPath workflow files present."

if ($CheckOutput) {
    $summary = Join-Path $ProjectRoot "Output\$today\Summary\Download_Summary_$today.xlsx"
    $original = Join-Path $ProjectRoot "Output\$today\Original"
    if (-not (Test-Path $summary)) {
        Write-Warning "No summary yet: $summary (run UiPath Main with in_FacilityLimit=2)"
    } else {
        Write-Host "Summary found: $summary"
    }
    if (Test-Path $original) {
        $pdfCount = (Get-ChildItem -Path $original -Recurse -Filter "*.pdf" -ErrorAction SilentlyContinue).Count
        Write-Host "PDFs under Original: $pdfCount"
    }
}

Write-Host "Pilot pre-flight OK."