#!/usr/bin/env bash
# Run the platform pipeline for a single pattern (plan-only or check-only).
#
# Usage: run_pattern_plan.sh [--check-only] <module-name>
#
# --check-only: offline mode (no AWS) — resolves the sample contract for the
#   module, runs the adapter, validates the emitted Terraform structure.
# (default): requires AWS — runs terraform plan on the emitted Terraform.
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

CHECK_ONLY=0
MODULE=""

for arg in "$@"; do
  case "$arg" in
    --check-only) CHECK_ONLY=1 ;;
    --*) echo "FAIL: unknown flag: $arg" >&2; exit 1 ;;
    *) MODULE="$arg" ;;
  esac
done

[ -n "$MODULE" ] || { echo "FAIL: module name required" >&2; exit 1; }

CONTRACT="contracts/$MODULE.yaml"
[ -f "$CONTRACT" ] || { echo "FAIL: no sample contract at $CONTRACT for module '$MODULE'" >&2; exit 1; }

WORK="/tmp/acdl_pattern_plan_$MODULE"
rm -rf "$WORK"; mkdir -p "$WORK"

echo "=== Pattern plan: $MODULE ==="
echo ""
echo "--- Step 1: environment check ---"
python3 core/environment_check.py "$CONTRACT" || { echo "FAIL: environment not bound" >&2; exit 1; }

echo ""
echo "--- Step 2: validate contract ---"
python3 -c "
import json, yaml, jsonschema
schema = json.load(open('schemas/contract.schema.json'))
contract = yaml.safe_load(open('$CONTRACT'))
jsonschema.validate(contract, schema)
print(f'contract: module={contract[\"module\"]} env={contract[\"environment\"]}')
"

echo ""
echo "--- Step 3: resolve contract -> stack ---"
python3 core/contract_resolver.py "$CONTRACT" "$WORK/stack.json" || { echo "FAIL: resolver failed" >&2; exit 1; }
python3 -c "import json; d=json.load(open('$WORK/stack.json')); print(f'stack: {d[\"stack\"][\"name\"]} {len(d[\"resources\"])} resource(s)')"

echo ""
echo "--- Step 4: adapter compiles stack -> terraform ---"
OUT_DIR="$WORK/terraform"
python3 adapters/terraform/adapter.py "$WORK/stack.json" "$OUT_DIR" || { echo "FAIL: adapter failed" >&2; exit 1; }
echo "adapter: emitted $OUT_DIR/{main.tf,terraform.tf,providers.tf}"

if [ "$CHECK_ONLY" = "1" ]; then
  echo ""
  echo "--- Step 5: validate adapter output structure (offline) ---"
  python3 -c "
import json, os
d = json.load(open('$WORK/stack.json'))
assert d['stack']['kind'] == 'l2', f\"expected l2, got {d['stack']['kind']}\"
assert len(d['resources']) >= 1
tf_dir = '$OUT_DIR'
for f in ('main.tf', 'terraform.tf', 'providers.tf'):
    assert os.path.isfile(os.path.join(tf_dir, f)), f'{f} missing'
main = open(os.path.join(tf_dir, 'main.tf')).read()
assert len(main) > 0, 'main.tf is empty'
print(f'pattern $MODULE: adapter output OK ({len(d[\"resources\"])} resource(s))')
"
  echo ""
  echo "=== PATTERN CHECK OK ($MODULE) ==="
  exit 0
fi

echo ""
echo "--- Step 5: terraform init + validate + plan ---"
cd "$OUT_DIR"
terraform init -backend=false -input=false
terraform validate
terraform plan -lock=false -input=false -out=tfplan
echo "=== PATTERN PLAN OK ($MODULE) ==="