# Self-contained SCrawler OF-Scraper setup (this file only; no extra .py/.bat).
#
# Installs ofscraper 3.12.9 via pip, pins aiolimiter 1.1.0, then applies DRM
# false-success patch 20260827_drm_minimal_v2 (embedded alt_download.py).
#
# Needs Python 3.11.x or 3.12.x. Older than 3.11.x and 3.13+ both fail with
# ofscraper 3.12.9. If a usable Python/pip is missing, this script points you
# to Python 3.11.6. After install, empty DRM segments / 0-byte audio+video are
# not marked downloaded.
#
# Usage:
#   .\Install-OFScraper.ps1
#   .\Install-OFScraper.ps1 -Force
#   .\Install-OFScraper.ps1 -Quiet
#   .\Install-OFScraper.ps1 -SkipDrmPatch
#   .\Install-OFScraper.ps1 -PythonPath "C:\Path\to\python.exe"
#
# The script was written by @cjb900. @cjb900, you are the best!

param(
    [string]$PythonPath = "",
    [switch]$Force,
    [switch]$Quiet,
    [switch]$SkipDrmPatch
)

$ErrorActionPreference = "Stop"

$OfScraperVersion = "3.12.9"
$AioLimiterVersion = "1.1.0"
$DrmPatchId = "20260827_drm_minimal_v2"
$DrmPatchRelPath = "actions\actions\download\managers\alt_download.py"
$DrmPatchSentinel = "DRM download produced 0 bytes"
$PythonMin = [version]"3.11.0"
$PythonMaxExclusive = [version]"3.13.0"
$PythonRecommended = "3.11.6"
$PythonReleaseUrl = "https://www.python.org/downloads/release/python-3116/"
$PythonInstaller64Url = "https://www.python.org/ftp/python/3.11.6/python-3.11.6-amd64.exe"

if ($ExecutionContext.SessionState.LanguageMode -eq "ConstrainedLanguage") {
    Write-Host "Error: PowerShell execution policy is restricting script execution." -ForegroundColor Red
    Write-Host "Run: powershell -ExecutionPolicy Bypass -File `"$($MyInvocation.MyCommand.Path)`"" -ForegroundColor Cyan
    if ($Host.Name -eq "ConsoleHost" -and -not $Quiet) {
        Write-Host "Press any key to exit..." -ForegroundColor Gray
        $null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
    }
    exit 1
}

function Write-ColorOutput {
    param(
        [string]$Message,
        [string]$Color = "White"
    )
    if (-not $Quiet) {
        Write-Host $Message -ForegroundColor $Color
    }
}

function Test-WindowsAppsStub {
    param([string]$ExePath)
    return ($ExePath -match '\\WindowsApps\\')
}

function Get-PythonVersion {
    param([string]$ExePath)
    try {
        $output = & $ExePath -c "import sys; print('%d.%d.%d' % sys.version_info[:3])" 2>$null
        if ($LASTEXITCODE -ne 0 -or [string]::IsNullOrWhiteSpace($output)) {
            return $null
        }
        return [version]($output.Trim())
    }
    catch {
        return $null
    }
}

function Test-SupportedPython {
    param([version]$Version)
    return ($Version -ge $PythonMin -and $Version -lt $PythonMaxExclusive)
}

function Get-PythonAgeLabel {
    param([version]$Version)
    if ($Version -lt $PythonMin) { return "too old" }
    if ($Version -ge $PythonMaxExclusive) { return "too new" }
    return "supported"
}

function Add-PythonCandidate {
    param(
        [System.Collections.Generic.List[object]]$List,
        [string]$ExePath
    )
    if ([string]::IsNullOrWhiteSpace($ExePath)) { return }
    try { $ExePath = [System.IO.Path]::GetFullPath($ExePath) } catch { return }
    if (-not (Test-Path -LiteralPath $ExePath)) { return }
    if (Test-WindowsAppsStub -ExePath $ExePath) { return }
    foreach ($existing in $List) {
        if ($existing.Path -eq $ExePath) { return }
    }
    $version = Get-PythonVersion -ExePath $ExePath
    if (-not $version) { return }
    $List.Add([pscustomobject]@{
        Path      = $ExePath
        Version   = $version
        Supported = (Test-SupportedPython -Version $version)
        Age       = (Get-PythonAgeLabel -Version $version)
    })
}

function Find-PythonInstalls {
    $found = New-Object "System.Collections.Generic.List[object]"

    if ($PythonPath) {
        Add-PythonCandidate -List $found -ExePath $PythonPath
        return $found
    }

    $pyLauncher = Get-Command py -ErrorAction SilentlyContinue
    if ($pyLauncher) {
        try {
            $pyList = & py -0p 2>$null
            foreach ($line in @($pyList)) {
                if ($line -match '([A-Za-z]:\\.+\\python\.exe)') {
                    Add-PythonCandidate -List $found -ExePath $Matches[1].Trim()
                }
            }
        }
        catch { }

        foreach ($tag in @("3.14", "3.13", "3.12", "3.11", "3.10", "3.9", "3.8")) {
            try {
                $resolved = & py "-$tag" -c "import sys; print(sys.executable)" 2>$null
                if ($LASTEXITCODE -eq 0 -and -not [string]::IsNullOrWhiteSpace($resolved)) {
                    Add-PythonCandidate -List $found -ExePath $resolved.Trim()
                }
            }
            catch { }
        }
    }

    foreach ($cmdName in @("python", "python3")) {
        $cmd = Get-Command $cmdName -ErrorAction SilentlyContinue
        if ($cmd -and $cmd.Source) {
            Add-PythonCandidate -List $found -ExePath $cmd.Source
        }
    }

    $searchRoots = @(
        "$env:LOCALAPPDATA\Programs\Python",
        "$env:ProgramFiles",
        "${env:ProgramFiles(x86)}"
    )
    foreach ($root in $searchRoots) {
        if (-not (Test-Path -LiteralPath $root)) { continue }
        Get-ChildItem -Path $root -Directory -ErrorAction SilentlyContinue |
            Where-Object { $_.Name -match '^Python3\d+$' } |
            ForEach-Object {
                $exe = Join-Path $_.FullName "python.exe"
                Add-PythonCandidate -List $found -ExePath $exe
            }
        if ($root -eq "$env:LOCALAPPDATA\Programs\Python") {
            Get-ChildItem -Path $root -Filter python.exe -Recurse -ErrorAction SilentlyContinue |
                Where-Object { $_.Directory.Name -notmatch '^(Scripts|Lib|include)$' } |
                ForEach-Object { Add-PythonCandidate -List $found -ExePath $_.FullName }
        }
    }

    return $found
}

function Test-Pip {
    param([string]$ExePath)
    try {
        $null = & $ExePath -m pip --version 2>$null
        return ($LASTEXITCODE -eq 0)
    }
    catch {
        return $false
    }
}

function Install-Pip {
    param([string]$ExePath)
    Write-ColorOutput "pip is missing. Trying python -m ensurepip..." "Yellow"
    try {
        & $ExePath -m ensurepip --upgrade
        if (Test-Pip -ExePath $ExePath) { return $true }
    }
    catch { }
    return $false
}

function Get-PipPackageVersion {
    param(
        [string]$ExePath,
        [string]$PackageName
    )
    try {
        $output = & $ExePath -m pip show $PackageName 2>$null
        foreach ($line in @($output)) {
            if ($line -match '^Version:\s*(.+)$') {
                return $Matches[1].Trim()
            }
        }
    }
    catch { }
    return $null
}

function Invoke-PipInstall {
    param(
        [string]$ExePath,
        [string[]]$PipArgs
    )
    $common = @(
        "-m", "pip", "install",
        "--disable-pip-version-check",
        "--no-warn-script-location"
    ) + $PipArgs

    & $ExePath @common
    if ($LASTEXITCODE -eq 0) { return $true }

    Write-ColorOutput "Retrying with --user (install into the current user site-packages)..." "Yellow"
    $userArgs = @(
        "-m", "pip", "install",
        "--user",
        "--disable-pip-version-check",
        "--no-warn-script-location"
    ) + $PipArgs
    & $ExePath @userArgs
    return ($LASTEXITCODE -eq 0)
}

function Get-OfScraperExe {
    param([string]$ExePath)
    try {
        $resolved = & $ExePath -c @"
import os, sys
from pathlib import Path
candidates = []
scripts = Path(sys.executable).resolve().parent / 'Scripts'
candidates.append(scripts / 'ofscraper.exe')
try:
    import sysconfig
    scripts2 = Path(sysconfig.get_path('scripts'))
    candidates.append(scripts2 / 'ofscraper.exe')
except Exception:
    pass
base = Path(os.environ.get('APPDATA', '')) / 'Python'
if base.exists():
    candidates.extend(base.glob('Python3*/Scripts/ofscraper.exe'))
for c in candidates:
    if c.is_file():
        print(c)
        break
"@ 2>$null
        if ($LASTEXITCODE -eq 0 -and -not [string]::IsNullOrWhiteSpace($resolved)) {
            $path = $resolved.Trim()
            if (Test-Path -LiteralPath $path) { return $path }
        }
    }
    catch { }
    return $null
}

function Show-PythonMissing {
    param(
        [string]$Reason,
        [object[]]$Unsupported = @()
    )
    Write-ColorOutput $Reason "Red"
    Write-ColorOutput "" "White"
    Write-ColorOutput "OF-Scraper $OfScraperVersion only works with Python 3.11.x or 3.12.x." "Yellow"
    Write-ColorOutput "  Too old:  3.10.x and earlier (missing language/package features)" "Gray"
    Write-ColorOutput "  Too new:  3.13.x and later (incompatible with this ofscraper release)" "Gray"
    Write-ColorOutput "" "White"

    $tooOld = @($Unsupported | Where-Object { $_.Age -eq "too old" } | Sort-Object Version)
    $tooNew = @($Unsupported | Where-Object { $_.Age -eq "too new" } | Sort-Object Version)

    if ($tooOld.Count -gt 0) {
        Write-ColorOutput "Found Python older than 3.11.x (cannot be used):" "Yellow"
        foreach ($item in $tooOld) {
            Write-ColorOutput ("  {0}  too old  ({1})" -f $item.Version, $item.Path) "Gray"
        }
        Write-ColorOutput "" "White"
    }
    if ($tooNew.Count -gt 0) {
        Write-ColorOutput "Found Python 3.13 or newer (cannot be used):" "Yellow"
        foreach ($item in $tooNew) {
            Write-ColorOutput ("  {0}  too new  ({1})" -f $item.Version, $item.Path) "Gray"
        }
        Write-ColorOutput "" "White"
    }
    if ($Unsupported.Count -eq 0) {
        Write-ColorOutput "No Python install was detected on this machine." "Yellow"
        Write-ColorOutput "" "White"
    }

    Write-ColorOutput "Install CPython $PythonRecommended (64-bit), then re-run this script." "Yellow"
    Write-ColorOutput "In the installer, enable 'Add python.exe to PATH'." "Yellow"
    Write-ColorOutput "Leave any 3.10-or-older and 3.13+ installs in place; this script will pick 3.11/3.12." "Yellow"
    Write-ColorOutput "" "White"
    Write-ColorOutput "Release page: $PythonReleaseUrl" "Cyan"
    Write-ColorOutput "64-bit installer: $PythonInstaller64Url" "Cyan"
    Write-ColorOutput "" "White"

    if ($Quiet) { return }

    $answer = Read-Host "Open the Python $PythonRecommended download page now? (y/n)"
    if ($answer -match '^[Yy]') {
        Start-Process $PythonReleaseUrl
    }
}

function Get-OfScraperPackageDir {
    param([string]$ExePath)
    try {
        $output = & $ExePath -c "import ofscraper, pathlib; print(pathlib.Path(next(iter(ofscraper.__path__))))" 2>$null
        if ($LASTEXITCODE -eq 0 -and -not [string]::IsNullOrWhiteSpace($output)) {
            $dir = $output.Trim()
            if (Test-Path -LiteralPath $dir) { return $dir }
        }
    }
    catch { }
    return $null
}

function Test-DrmPatchApplied {
    param([string]$AltDownloadPath)
    if (-not (Test-Path -LiteralPath $AltDownloadPath)) { return $false }
    try {
        $text = [System.IO.File]::ReadAllText($AltDownloadPath)
        return $text.Contains($DrmPatchSentinel)
    }
    catch {
        return $false
    }
}

function Get-DrmPatchBase64 {
    # Patched alt_download.py for ofscraper 3.12.9 (patch 20260827_drm_minimal_v2)
    return @'
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'@
}

function Get-DrmPatchBytes {
    $b64 = Get-DrmPatchBase64
    $b64 = ($b64 -replace '\s', '')
    return [Convert]::FromBase64String($b64)
}

function Install-DrmPatch {
    param(
        [string]$ExePath,
        [bool]$Reinstalled
    )
    $script:DrmPatchStatus = "not applied"
    if ($SkipDrmPatch) {
        Write-ColorOutput "Skipping DRM patch (-SkipDrmPatch)." "Yellow"
        $script:DrmPatchStatus = "skipped"
        return $true
    }

    $pkg = Get-OfScraperPackageDir -ExePath $ExePath
    if (-not $pkg) {
        Write-ColorOutput "Could not locate the ofscraper package directory; DRM patch was not applied." "Red"
        return $false
    }

    $target = Join-Path $pkg $DrmPatchRelPath
    if (-not (Test-Path -LiteralPath $target)) {
        Write-ColorOutput "Expected DRM file is missing: $target" "Red"
        return $false
    }

    if (-not $Reinstalled -and (Test-DrmPatchApplied -AltDownloadPath $target)) {
        Write-ColorOutput "DRM false-success patch is already present." "Green"
        $script:DrmPatchStatus = $DrmPatchId
        return $true
    }

    Write-ColorOutput "" "White"
    Write-ColorOutput "Applying DRM false-success patch ($DrmPatchId)..." "Yellow"
    Write-ColorOutput "Empty DRM segments and 0-byte audio+video will no longer be marked downloaded." "Gray"

    $stamp = Get-Date -Format "yyyyMMdd_HHmmss"
    $backupRoot = Join-Path $env:TEMP "ofscraper_patch_backup_${DrmPatchId}_$stamp"
    $backupFile = Join-Path $backupRoot $DrmPatchRelPath
    New-Item -ItemType Directory -Force -Path (Split-Path -Parent $backupFile) | Out-Null
    Copy-Item -LiteralPath $target -Destination $backupFile -Force

    try {
        $bytes = Get-DrmPatchBytes
        [System.IO.File]::WriteAllBytes($target, $bytes)
    }
    catch {
        Write-ColorOutput "DRM patch failed: $($_.Exception.Message)" "Red"
        Write-ColorOutput "Restore from backup: $backupFile" "Yellow"
        return $false
    }

    if (-not (Test-DrmPatchApplied -AltDownloadPath $target)) {
        Write-ColorOutput "DRM patch wrote a file, but the expected fix marker is missing." "Red"
        Write-ColorOutput "Restore from backup: $backupFile" "Yellow"
        return $false
    }

    Write-ColorOutput "DRM patch applied." "Green"
    Write-ColorOutput "Backup: $backupFile" "Gray"
    Write-ColorOutput "If an earlier run marked protected media as downloaded with 0 bytes, rescrape that media." "Gray"
    $script:DrmPatchStatus = $DrmPatchId
    return $true
}

function Pause-IfInteractive {
    if ($Host.Name -eq "ConsoleHost" -and -not $Quiet) {
        Write-Host ""
        Write-Host "Press any key to exit..." -ForegroundColor Gray
        $null = $Host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")
    }
}

Write-ColorOutput "" "White"
Write-ColorOutput "=== SCrawler OF-Scraper installer ===" "Cyan"
Write-ColorOutput "Target: ofscraper==$OfScraperVersion + aiolimiter==$AioLimiterVersion" "Gray"
Write-ColorOutput "Python: 3.11.x or 3.12.x only (not 3.10 or older, not 3.13+)" "Gray"
Write-ColorOutput "DRM patch: $DrmPatchId (alt_download.py false-success fix)" "Gray"
Write-ColorOutput "" "White"

$installs = @(Find-PythonInstalls)
$supported = @($installs | Where-Object { $_.Supported } | Sort-Object @{ Expression = { $_.Version.Minor } }, @{ Expression = { $_.Version.Build } } -Descending)
# Prefer 3.11 over 3.12: 3.11 is the version SCrawler/OF-Scraper docs recommend (3.11.6).
$preferred = @($supported | Where-Object { $_.Version.Minor -eq 11 } | Sort-Object Version -Descending)
if ($preferred.Count -gt 0) {
    $python = $preferred[0]
} elseif ($supported.Count -gt 0) {
    $python = ($supported | Sort-Object Version -Descending)[0]
} else {
    $python = $null
}

if (-not $python) {
    $reason = "A supported Python was not found. Need 3.11.x or 3.12.x (not older than 3.11, not 3.13+)."
    if ($PythonPath) {
        $reason = "The Python executable at '$PythonPath' is missing, or is older than 3.11.x, or is 3.13+."
    }
    Show-PythonMissing -Reason $reason -Unsupported @($installs | Where-Object { -not $_.Supported })
    Pause-IfInteractive
    exit 1
}

Write-ColorOutput ("Using Python {0}" -f $python.Version) "Green"
Write-ColorOutput $python.Path "Gray"

if (-not (Test-Pip -ExePath $python.Path)) {
    if (-not (Install-Pip -ExePath $python.Path)) {
        Show-PythonMissing -Reason "pip is not available for this Python install and ensurepip failed."
        Pause-IfInteractive
        exit 1
    }
    Write-ColorOutput "pip is now available." "Green"
}

$currentOfs = Get-PipPackageVersion -ExePath $python.Path -PackageName "ofscraper"
$currentAio = Get-PipPackageVersion -ExePath $python.Path -PackageName "aiolimiter"

if ($currentOfs) {
    Write-ColorOutput "Installed ofscraper: $currentOfs" "White"
} else {
    Write-ColorOutput "ofscraper is not installed." "Yellow"
}
if ($currentAio) {
    Write-ColorOutput "Installed aiolimiter: $currentAio" "White"
}

$needOfs = $Force -or ($currentOfs -ne $OfScraperVersion)

if ($needOfs) {
    Write-ColorOutput "" "White"
    Write-ColorOutput "Installing ofscraper==$OfScraperVersion ..." "Yellow"
    if (-not (Invoke-PipInstall -ExePath $python.Path -PipArgs @("ofscraper==$OfScraperVersion"))) {
        Write-ColorOutput "Failed to install ofscraper==$OfScraperVersion" "Red"
        Pause-IfInteractive
        exit 1
    }
} else {
    Write-ColorOutput "ofscraper $OfScraperVersion is already installed." "Green"
}

Write-ColorOutput "" "White"
Write-ColorOutput "Pinning aiolimiter==$AioLimiterVersion (newer versions break OF-Scraper $OfScraperVersion)..." "Yellow"
if (-not (Invoke-PipInstall -ExePath $python.Path -PipArgs @("--force-reinstall", "--no-deps", "aiolimiter==$AioLimiterVersion"))) {
    Write-ColorOutput "Failed to install aiolimiter==$AioLimiterVersion" "Red"
    Pause-IfInteractive
    exit 1
}

$finalOfs = Get-PipPackageVersion -ExePath $python.Path -PackageName "ofscraper"
$finalAio = Get-PipPackageVersion -ExePath $python.Path -PackageName "aiolimiter"

if ($finalOfs -ne $OfScraperVersion) {
    Write-ColorOutput "ofscraper version after install is '$finalOfs', expected $OfScraperVersion." "Red"
    Pause-IfInteractive
    exit 1
}
if ($finalAio -ne $AioLimiterVersion) {
    Write-ColorOutput "aiolimiter version after install is '$finalAio', expected $AioLimiterVersion." "Red"
    Pause-IfInteractive
    exit 1
}

$drmOk = Install-DrmPatch -ExePath $python.Path -Reinstalled $needOfs
if (-not $drmOk -and -not $SkipDrmPatch) {
    Write-ColorOutput "Install finished, but the DRM patch did not apply." "Yellow"
}

$ofsExe = Get-OfScraperExe -ExePath $python.Path

Write-ColorOutput "" "White"
Write-ColorOutput "Install complete." "Green"
Write-ColorOutput ("  ofscraper    {0}" -f $finalOfs) "White"
Write-ColorOutput ("  aiolimiter   {0}" -f $finalAio) "White"
Write-ColorOutput ("  DRM patch    {0}" -f $DrmPatchStatus) "White"
Write-ColorOutput ("  Python       {0}" -f $python.Version) "White"

if ($ofsExe) {
    Write-ColorOutput "" "White"
    Write-ColorOutput "Paste this into SCrawler: Settings -> OnlyFans -> OF-Scraper path" "Cyan"
    Write-ColorOutput $ofsExe "Green"
} else {
    Write-ColorOutput "" "White"
    Write-ColorOutput "ofscraper installed, but ofscraper.exe was not found on disk." "Yellow"
    Write-ColorOutput "Look under the Python Scripts folder next to:" "Yellow"
    Write-ColorOutput $python.Path "Gray"
}

Pause-IfInteractive
exit 0