#!/usr/bin/env bash
set -euo pipefail

# DEVOPS-CLI-43-003: parity diff for CLI golden outputs

EXPECTED_DIR=${EXPECTED_DIR:-"tests/goldens"}
ACTUAL_DIR=${ACTUAL_DIR:-"out/cli-goldens"}
CLI=${CLI:-"dotnet run --project src/Cli/StellaOps.Cli/StellaOps.Cli.csproj --no-build --"}

mkdir -p "$ACTUAL_DIR"

run_case() {
  local name=$1
  local args=$2
  local outfile="${ACTUAL_DIR}/${name}.txt"
  echo "[parity] running ${name}: ${args}"
  $CLI $args > "$outfile"
}

run_case "help" "--help"
run_case "scan-help" "scan --help"

diffs=0
for expected in $(find "$EXPECTED_DIR" -name '*.txt'); do
  rel=${expected#$EXPECTED_DIR/}
  actual="${ACTUAL_DIR}/${rel}"
  if ! diff -u "$expected" "$actual" > "${ACTUAL_DIR}/${rel}.diff" 2>/dev/null; then
    echo "[parity] diff for $rel"
    diffs=$((diffs+1))
  else
    rm -f "${ACTUAL_DIR}/${rel}.diff"
  fi
done

echo "[parity] total diffs: $diffs"
echo "$diffs" > "${ACTUAL_DIR}/summary.txt"