# ==================================================
# Left 4 Dead Addons Checker by KorgKurzweil
# https://h-eatqore.sessionsphere.com
# Helper Tool for finding mismatched versions of custom campaigns
# ==================================================

# =========================
# CONFIG
# =========================
$url = "https://h-eatqore.sessionsphere.com/?action=cmap_stats"
$localDir = $PSScriptRoot

Write-Host ""
Write-Host "Checking addons..."
Write-Host "URL: $url"

# =========================
# OUTPUT ARRAYS
# =========================
$NONEXISTINGFILE = @()
$TO_UPDATE = @()
$UPDATED_FILES = @()
$ExpectedVpkFiles = @()
$UNLISTED_VPK_FILES = @()

# =========================
# GET JSON DATA
# =========================
$data = Invoke-RestMethod -Uri $url -Method Get

if ($data -isnot [System.Array]) {
    $data = @($data)
}

# =========================
# PROCESS
# =========================
foreach ($item in $data) {

    $fileName = $item.gameserverfile

    if ([string]::IsNullOrWhiteSpace($fileName)) {
        continue
    }

    # Add ALL campaign files, regardless of updated status
    $ExpectedVpkFiles += $fileName.ToLower()

    # Only process updated items
    if ($item.updated -ne 1) {
        continue
    }

    $fileName = $item.gameserverfile
   

    if ([string]::IsNullOrWhiteSpace($fileName)) {
        continue
    }

    $localFile = Join-Path $localDir $fileName

    # Common object we'll add to the lists
    $fileInfo = [PSCustomObject]@{
        Name          = $item.name
        "File Name"   = $fileName
        "Server Date" = ([datetime]$item.version_lastcheck_lastupdated).ToString("yyyy-MM-dd")
        "Local Date"  = if (Test-Path $localFile) {
                            (Get-Item $localFile).LastWriteTime.ToString("yyyy-MM-dd")
                        }
                        else {
                            "-"
                        }
        Link          = $item.external_link
    }

    # =========================
    # FILE DOES NOT EXIST
    # =========================
    if (!(Test-Path $localFile)) {
        $NONEXISTINGFILE += $fileInfo
        continue
    }

    # =========================
    # FILE EXISTS
    # =========================
    $remoteDate = ([datetime]$item.version_lastcheck_lastupdated).Date
    $localDate = (Get-Item $localFile).LastWriteTime.Date

    # Allow local file to be up to 1 day behind
    if ($localDate.AddDays(1) -lt $remoteDate) {
        $TO_UPDATE += $fileInfo
    }
    else {
        $UPDATED_FILES += $fileInfo
    }
}


# =========================
# FIND LOCAL VPK FILES NOT IN CAMPAIGN LIST
# =========================

$LocalVpkFiles = Get-ChildItem -Path $localDir -Filter *.vpk -File

foreach ($file in $LocalVpkFiles) {

    if ($file.Name.ToLower() -notin $ExpectedVpkFiles) {

        $UNLISTED_VPK_FILES += [PSCustomObject]@{
            "File Name" = $file.Name
            Modified    = $file.LastWriteTime
        }
    }
}

# =========================
# RESULTS
# =========================


Write-Host ""
Write-Host "=====================================" -ForegroundColor Green
Write-Host "UPDATED FILES ($($UPDATED_FILES.Count))" -ForegroundColor Green

if ($UPDATED_FILES.Count -gt 0) {
    $TableText = $UPDATED_FILES |
        Sort-Object Name |
        Format-Table Name, "File Name", "Server Date", "Local Date", Link -AutoSize |
        Out-String
    Write-Host $TableText -ForegroundColor Green
}
else {
    Write-Host "None"
}

if ($UNLISTED_VPK_FILES.Count -gt 0) {

    Write-Host ""
    Write-Host "=====================================" -ForegroundColor Cyan
    Write-Host "UNLISTED VPK FILES ($($UNLISTED_VPK_FILES.Count))" -ForegroundColor Cyan


    $TableText = $UNLISTED_VPK_FILES |
        Sort-Object "File Name" |
        Format-Table "File Name", Modified -AutoSize |
        Out-String

    Write-Host $TableText -ForegroundColor Cyan
}


if ($NONEXISTINGFILE.Count -gt 0) {

    Write-Host ""
    Write-Host "=====================================" -ForegroundColor DarkRed
    Write-Host "NON EXISTING FILES ($($NONEXISTINGFILE.Count))" -ForegroundColor DarkRed


    $TableText = $NONEXISTINGFILE |
        Sort-Object Name |
        Format-Table Name, "File Name", "Server Date", "Local Date", Link -AutoSize |
        Out-String
    Write-Host $TableText -ForegroundColor DarkRed
}



if ($TO_UPDATE.Count -gt 0) {

    Write-Host ""
    Write-Host "=====================================" -ForegroundColor DarkYellow
    Write-Host "TO UPDATE ($($TO_UPDATE.Count))" -ForegroundColor DarkYellow

    $TableText = $TO_UPDATE |
        Sort-Object Name |
        Format-Table Name, "File Name", "Server Date", "Local Date", Link -AutoSize |
        Out-String
    Write-Host $TableText -ForegroundColor DarkYellow
}

if (-not $NONEXISTINGFILE.Count -and -not $TO_UPDATE.Count) {
    Write-Host ""
    Write-Host "=====================================" -ForegroundColor Green
    Write-Host "All files are updated" -ForegroundColor Green
    Write-Host "=====================================" -ForegroundColor Green
}