# Compare SHA-256 hashes in two explicitly selected folders. Never changes files.
[CmdletBinding()]
param(
    [string]$Source = (Join-Path $PSScriptRoot '../data/restore-source'),
    [string]$Restored = (Join-Path $PSScriptRoot '../data/restore-result')
)
$ErrorActionPreference = 'Stop'
$sourceRoot = (Resolve-Path -LiteralPath $Source).Path
$restoreRoot = (Resolve-Path -LiteralPath $Restored).Path
foreach ($file in (Get-ChildItem -LiteralPath $sourceRoot -File -Recurse)) {
    $relative = $file.FullName.Substring($sourceRoot.Length).TrimStart([char[]]'\/')
    $target = Join-Path $restoreRoot $relative
    $status = 'Missing'
    if (Test-Path -LiteralPath $target -PathType Leaf) {
        $original = (Get-FileHash -LiteralPath $file.FullName -Algorithm SHA256).Hash
        $restoredHash = (Get-FileHash -LiteralPath $target -Algorithm SHA256).Hash
        $status = if ($original -eq $restoredHash) { 'Match' } else { 'Mismatch' }
    }
    [pscustomobject]@{ File = $relative; Status = $status }
}
# This checks expected file contents only, not ACLs, extra files or application recovery.