#!/usr/bin/env bash
# scripts/run_platform.sh - the ACDL platform pipeline.
#
# Modes:
#   --check-only  (offline, no AWS/Checkov/DynamoDB — for CI)
#     load IR -> adapter -> validate output structure -> exit 0
#   --plan-only   (requires AWS creds, no Checkov/outbox)
#     load IR -> adapter -> terraform init/validate/plan -> exit 0
#   (default)    (requires AWS creds + Checkov + DynamoDB)
#     load IR -> adapter -> terraform plan -> Checkov -> confidence -> outbox
#
# NOTE: contract resolution (contract_resolver.py) was removed when the
# thin-composition layer was taken out. The pipeline now starts from a
# pre-existing IR instance (modules-ir/l1/l1-s3/spike_instance.json). A
# new contract-resolution mechanism will be designed in a later phase.
#
# Uses the rotated spike key (D-039/D-047) from gitignored .env.secrets.
# Plan-only (no apply); -lock=false per D-P09-1.
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
cd "$ROOT"

CHECK_ONLY=0
PLAN_ONLY=0
for arg in "$@"; do
  case "$arg" in
    --check-only) CHECK_ONLY=1 ;;
    --plan-only) PLAN_ONLY=1 ;;
    *) echo "FAIL: unknown argument: $arg" >&2; exit 1 ;;
  esac
done

fail() { echo "FAIL: $*" >&2; exit 1; }

CONTRACT_ID="11111111-1111-1111-1111-111111111111"  # spike fixed UUID
WORK="/tmp/spike_e2e"
rm -rf "$WORK"; mkdir -p "$WORK"

echo "=== Step 1+2: load pre-existing IR instance (contract resolution deferred) ==="
IR_INSTANCE="modules-ir/l1/l1-s3/spike_instance.json"
[ -f "$IR_INSTANCE" ] || fail "IR instance $IR_INSTANCE missing (contract resolution is deferred; load a pre-existing IR)"
python3 -c "import json; d=json.load(open('$IR_INSTANCE')); print(f\"IR: {d['stack']['name']} {d['stack']['kind']} {len(d['resources'])} resource(s)\")"
cp "$IR_INSTANCE" "$WORK/spike_ir.json"

echo "=== Step 3: adapter compiles IR -> terraform/spike/*.tf (regenerate) ==="
python3 adapters/terraform/adapter.py "$WORK/spike_ir.json" terraform/spike || fail "adapter failed"
echo "adapter: emitted terraform/spike/{main.tf,terraform.tf,providers.tf}"

if [ "$CHECK_ONLY" = "1" ]; then
  echo ""
  echo "=== Step 3b: validate adapter output structure (offline) ==="
  python3 -c "
import json, os
d = json.load(open('$WORK/spike_ir.json'))
assert d['stack']['name'] == 'l1-s3'
assert len(d['resources']) == 1
tf_dir = 'terraform/spike'
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 'aws_s3_bucket' in main
assert 'acdl-spike-bucket' in main
assert 'versioning' in main
tf = open(os.path.join(tf_dir, 'terraform.tf')).read()
assert 'backend' in tf
assert 'required_version' in tf
prov = open(os.path.join(tf_dir, 'providers.tf')).read()
assert 'provider \"aws\"' in prov
print('adapter output: OK')
"
  echo ""
  echo "=== PLATFORM CHECK OK ==="
  echo "IR instance -> adapter -> structure validated (offline, no AWS)"
  exit 0
fi

echo "=== Loading AWS credentials (not needed for --check-only) ==="
ENV_FILE="$ROOT/.env.secrets"
[ -f "$ENV_FILE" ] || fail ".env.secrets missing (run scripts/rotate_spike_key.sh)"
set -a
. "$ENV_FILE"
set +a
export AWS_ACCESS_KEY_ID="$ACDL_AWS_ACCESS_KEY_ID"
export AWS_SECRET_ACCESS_KEY="$ACDL_AWS_SECRET_ACCESS_KEY"
export AWS_DEFAULT_REGION="$AWS_DEFAULT_REGION"

echo "=== Step 4: terraform init + validate + plan -lock=false (real AWS) ==="
cd terraform/spike
terraform init -reconfigure -lock=false -input=false >> "$WORK/tf.log" 2>&1 || fail "terraform init failed"
terraform validate >> "$WORK/tf.log" 2>&1 || fail "terraform validate failed"
terraform plan -lock=false -input=false -out=tfplan >> "$WORK/tf.log" 2>&1 || fail "terraform plan failed"
echo "terraform plan OK (1 to add, 0 to change, 0 to destroy expected)"
cd "$ROOT"

if [ "$PLAN_ONLY" = "1" ]; then
  echo ""
  echo "=== PLATFORM PLAN OK ==="
  exit 0
fi

echo "=== Step 5: run Checkov on terraform/spike/main.tf ==="
checkov -f terraform/spike/main.tf --framework terraform -o json --soft-fail > "$WORK/checkov.json" 2> "$WORK/checkov.err"
[ -s "$WORK/checkov.json" ] || fail "checkov produced no output"
echo "checkov: $(python3 -c "import json; d=json.load(open('$WORK/checkov.json')); print(len(d.get('results',{}).get('failed_checks',[])), 'failed,', len(d.get('results',{}).get('passed_checks',[])), 'passed')")"

echo "=== Step 6: Checkov adapter -> PolicyCheckResult list ==="
python3 adapters/terraform/policy/checkov_adapter.py "$WORK/checkov.json" "$CONTRACT_ID" > "$WORK/pcr.json" || fail "checkov adapter failed"
PCR_COUNT=$(python3 -c "import json; print(len(json.load(open('$WORK/pcr.json'))))")
echo "PolicyCheckResult: $PCR_COUNT record(s)"

echo "=== Step 7: confidence signal compute ==="
python3 <<PY > "$WORK/signal.json" || fail "confidence signal failed"
import json
import acdl_platform.confidence_signal as c
pcr = json.load(open("$WORK/pcr.json"))
inputs = {
    "policy": pcr,
    "validation": {"schema": True, "ir_resolved": True, "tf_validated": True, "tf_planned": True},
    "freshness": {"age_days": 0, "max_age_days": 7},
    "source": {"submitter": "spike", "commit_sha": "spike-sha", "signed": False},
    "history": {"prior_rollbacks": 0, "prior_policy_fails": 0},
    "nfrs": {"conformance": None},
}
sig = c.compute("$CONTRACT_ID", "dev", inputs)
print(json.dumps({"score": sig.score, "band": sig.band, "perInput": sig.perInput, "reasonCodes": sig.reasonCodes}, indent=2))
PY
BAND=$(python3 -c "import json; print(json.load(open('$WORK/signal.json'))['band'])")
SCORE=$(python3 -c "import json; print(round(json.load(open('$WORK/signal.json'))['score'],3))")
echo "confidence: score=$SCORE band=$BAND"
[ "$BAND" = "pass" ] || fail "confidence band is $BAND, expected pass for dev"

echo "=== Step 8: write evidence event to DynamoDB outbox ==="
python3 <<PY > "$WORK/event.json" || fail "event build failed"
import json, datetime
sig = json.load(open("$WORK/signal.json"))
event = {
    "contractId": "$CONTRACT_ID",
    "eventType": "CONFIDENCE_COMPUTED",
    "ts": datetime.datetime.now(datetime.timezone.utc).strftime("%Y-%m-%dT%H:%M:%SZ"),
    "environment": "dev",
    "stack": "l2-static-asset",
    "score": sig["score"],
    "band": sig["band"],
    "prev_event_hash": "GENESIS",
}
print(json.dumps(event, indent=2))
PY
python3 acdl_platform/outbox_writer.py "$WORK/event.json" > "$WORK/outbox_item.json" || fail "outbox write failed"
echo "outbox: $(python3 -c "import json; d=json.load(open('$WORK/outbox_item.json')); print('contractId=', d['contractId'], 'hash=', d['hash'][:16]+'...')")"

echo ""
echo "=== PLATFORM E2E OK ==="
echo "IR instance -> terraform plan -> Checkov -> confidence ($BAND) -> outbox"
exit 0