#!/bin/sh
# ---------------------------------------------------------------------------
# Local migration test harness.
# Builds the migration Docker image from the monorepo root, spins up a fresh
# throwaway Postgres container, runs the migration job against it, and tears
# everything down when done — pass or fail.
#
# Usage (from monorepo root):
#   sh api/prisma/test-migration-local.sh
#
# Requirements: Docker
# ---------------------------------------------------------------------------
set -e

NETWORK=migrate-test-net
DB_CONTAINER=migrate-test-postgres
MIGRATE_IMAGE=optima-api-migrate-local-test
DB_USER=optima
DB_PASS=testpass
DB_NAME=optima

# ---- Cleanup function — always runs on exit ----
cleanup() {
  echo "[test] Cleaning up..."
  docker rm -f "$DB_CONTAINER" 2>/dev/null || true
  docker network rm "$NETWORK" 2>/dev/null || true
  docker rmi "$MIGRATE_IMAGE" 2>/dev/null || true
}
trap cleanup EXIT

# ---- 1. Create an isolated Docker network ----
echo "[test] Creating Docker network: $NETWORK"
docker network create "$NETWORK"

# ---- 2. Start a fresh Postgres container ----
echo "[test] Starting fresh Postgres container: $DB_CONTAINER"
docker run -d \
  --name "$DB_CONTAINER" \
  --network "$NETWORK" \
  -e POSTGRES_USER="$DB_USER" \
  -e POSTGRES_PASSWORD="$DB_PASS" \
  -e POSTGRES_DB="$DB_NAME" \
  postgres:17

# Wait for Postgres to be ready (up to 30s)
echo "[test] Waiting for Postgres to be ready..."
READY=0
for i in $(seq 1 30); do
  if docker exec "$DB_CONTAINER" pg_isready -U "$DB_USER" -d "$DB_NAME" > /dev/null 2>&1; then
    READY=1
    break
  fi
  sleep 1
done

if [ $READY -eq 0 ]; then
  echo "[test] Postgres did not become ready in 30s. Aborting."
  exit 1
fi
echo "[test] Postgres is ready."

# ---- 3. Build the migration image from the monorepo root ----
echo "[test] Building migration image: $MIGRATE_IMAGE"
# Determine the monorepo root (two levels up from this script's directory)
SCRIPT_DIR=$(cd "$(dirname "$0")" && pwd)
REPO_ROOT=$(cd "$SCRIPT_DIR/../.." && pwd)

docker build \
  -f "$REPO_ROOT/api/Dockerfile" \
  --target migration \
  -t "$MIGRATE_IMAGE" \
  "$REPO_ROOT"

# ---- 4. Run the migration container against the test Postgres ----
echo "[test] Running migration container..."
DATABASE_URL="postgresql://${DB_USER}:${DB_PASS}@${DB_CONTAINER}:5432/${DB_NAME}"

docker run --rm \
  --network "$NETWORK" \
  -e DATABASE_URL="$DATABASE_URL" \
  "$MIGRATE_IMAGE"

echo ""
echo "[test] SUCCESS — all migrations applied cleanly to a fresh database."