#!/usr/bin/env bash
# Pre-commit checks for the PowerShell scripts. Run from the repo root.
# Needs pwsh on PATH (see the project notes for how it was installed).
set -uo pipefail
cd "$(dirname "$0")"
fail=0

echo "== ASCII only =="
# Windows PowerShell 5.1 reads a BOM-less .ps1 in the system codepage, which
# turns any multi-byte character into mojibake - including quote characters
# that break string literals mid-script.
for f in *.ps1; do
    if LC_ALL=C grep -nP '[^\x00-\x7F]' "$f" >/dev/null; then
        echo "  FAIL $f contains non-ASCII:"
        LC_ALL=C grep -nP '[^\x00-\x7F]' "$f" | head -5
        fail=1
    else
        echo "  ok   $f"
    fi
done

echo
echo "== \$var? in a string =="
# ? is a legal character in an unbraced PowerShell variable name, so "$name?"
# looks up a variable called name? and silently renders empty. Use ${name}?.
if grep -nP '\$\w+\?' ./*.ps1; then
    echo "  FAIL - wrap those as \${name}? or the text disappears at runtime"
    fail=1
else
    echo "  ok   none found"
fi

echo
echo "== parse + Windows PowerShell 5.1 compatibility =="
pwsh -NoProfile -Command '
$bad = 0
foreach ($f in Get-ChildItem -Filter *.ps1) {
    $e = $null
    [System.Management.Automation.Language.Parser]::ParseFile($f.FullName, [ref]$null, [ref]$e) | Out-Null
    if ($e.Count) {
        $bad++
        Write-Host "  FAIL $($f.Name)"
        $e | ForEach-Object { "     line $($_.Extent.StartLineNumber): $($_.Message)" }
    } else { Write-Host "  ok   $($f.Name)" }
}
if (Get-Module -ListAvailable PSScriptAnalyzer) {
    Import-Module PSScriptAnalyzer
    $s = @{ Rules = @{ PSUseCompatibleSyntax = @{ Enable = $true; TargetVersions = @("5.1","7.0") } } }
    $c = Invoke-ScriptAnalyzer -Path . -Recurse -Settings $s -IncludeRule PSUseCompatibleSyntax
    if ($c) { $bad++; $c | ForEach-Object { "  FAIL 5.1: $($_.ScriptName):$($_.Line) $($_.Message)" } }
    else { Write-Host "  ok   5.1 syntax clean" }
} else {
    Write-Host "  skip PSScriptAnalyzer not installed"
}
exit $bad
' || fail=1

echo
echo "== JSON templates =="
python3 - <<'PY' || fail=1
import glob, json, sys
bad = 0
for f in glob.glob("Entities/**/*.json", recursive=True) + ["settings.json"]:
    try:
        json.load(open(f))
        print("  ok   %s" % f)
    except Exception as e:
        print("  FAIL %s: %s" % (f, e)); bad = 1
sys.exit(bad)
PY

echo
if [ "$fail" -eq 0 ]; then echo "ALL CHECKS PASSED"; else echo "CHECKS FAILED"; fi
exit $fail