#!/usr/bin/env bash
# Idempotent local dev environment setup.
# Run once after cloning; safe to re-run at any time.
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
PROJECT_ROOT="$(cd "$SCRIPT_DIR/.." && pwd)"

mkdir -p "$PROJECT_ROOT/logs"
LOG_FILE="$PROJECT_ROOT/logs/setup-$(date +%Y%m%d-%H%M%S).log"
exec > >(tee "$LOG_FILE") 2>&1

GREEN='\033[0;32m'; YELLOW='\033[1;33m'; RED='\033[0;31m'; BOLD='\033[1m'; NC='\033[0m'
info() { echo -e "${GREEN}[apix]${NC} $*"; }
warn() { echo -e "${YELLOW}[warn]${NC} $*"; }
die()  { echo -e "${RED}[fail]${NC} $*" >&2; exit 1; }
step() { echo -e "\n${BOLD}── $* ──${NC}"; }

_on_exit() {
  echo ""
  echo -e "${BOLD}Full log:${NC} $LOG_FILE"
  read -rp "Press Enter to close…" _
}
trap _on_exit EXIT

info "Logging to $LOG_FILE"

# ── 1. Java 21 ──────────────────────────────────────────────────────────────
step "Java 21"
if java -version 2>&1 | grep -q 'version "21'; then
  info "Java 21 detected"
else
  warn "Java 21 not found."
  echo "  Install via SDKMAN (recommended):"
  echo "    curl -s https://get.sdkman.io | bash"
  echo "    sdk install java 21-tem"
  echo ""
  echo "  Or download from: https://adoptium.net/"
  die "Please install Java 21 and re-run this script."
fi

# ── 2. Maven ─────────────────────────────────────────────────────────────────
step "Maven"
if command -v mvn &>/dev/null; then
  MVN_VER="$(mvn -q --version 2>&1 | head -1 || true)"
  info "Maven ${MVN_VER}"
else
  die "Maven not found. Install: https://maven.apache.org/install.html"
fi

# ── 3. Docker ────────────────────────────────────────────────────────────────
step "Docker"
if docker info &>/dev/null; then
  info "Docker running"
else
  die "Docker not running. Start Docker Desktop (or the Docker daemon) and re-run."
fi

# ── 4. .env file ─────────────────────────────────────────────────────────────
step ".env"
cd "$PROJECT_ROOT"
if [[ ! -f .env.example ]]; then
  die ".env.example not found in $PROJECT_ROOT — repository may be incomplete."
fi

if [[ ! -f .env ]]; then
  cp .env.example .env
  info "Created .env from .env.example"
  warn "Review .env and set real values before running in any shared environment."
else
  info ".env already exists — skipping copy"
fi

# Load .env into this shell so DB vars are available below
set -a
# shellcheck disable=SC1091
source .env
set +a

DB_USER="${APIX_DB_USER:-apix}"
DB_PASS="${APIX_DB_PASSWORD:-apix}"
DB_NAME="${APIX_DB_NAME:-apix}"
DB_PORT="${APIX_DB_PORT:-5432}"

# ── 5. PostgreSQL container ───────────────────────────────────────────────────
step "PostgreSQL"
CONTAINER=apix-postgres

if docker ps --format '{{.Names}}' | grep -qx "$CONTAINER"; then
  info "Container '$CONTAINER' already running"
elif docker ps -a --format '{{.Names}}' | grep -qx "$CONTAINER"; then
  info "Starting existing container '$CONTAINER'"
  docker start "$CONTAINER" >/dev/null
else
  info "Creating container '$CONTAINER' (postgres:16-alpine, port $DB_PORT)"
  docker run -d \
    --name "$CONTAINER" \
    --restart unless-stopped \
    -e POSTGRES_USER="$DB_USER" \
    -e POSTGRES_PASSWORD="$DB_PASS" \
    -e POSTGRES_DB="$DB_NAME" \
    -p "${DB_PORT}:5432" \
    postgres:16-alpine >/dev/null
fi

# Wait for Postgres to accept connections
info "Waiting for PostgreSQL to become ready…"
for i in $(seq 1 30); do
  if docker exec "$CONTAINER" pg_isready -U "$DB_USER" -q 2>/dev/null; then
    info "PostgreSQL ready"
    break
  fi
  if [[ $i -eq 30 ]]; then
    die "PostgreSQL did not become ready within 30 s. Check: docker logs $CONTAINER"
  fi
  sleep 1
done

# ── 6. Liquibase migrations ───────────────────────────────────────────────────
step "Database migrations"
JDBC_URL="jdbc:postgresql://localhost:${DB_PORT}/${DB_NAME}"

if [[ ! -f "$PROJECT_ROOT/pom.xml" ]]; then
  warn "No pom.xml found — Maven project not scaffolded yet (WORKLOG Block 1 / C-00)."
  warn "Skipping Liquibase migrations. Run this script again after completing Block 1."
else
  # apix-registry depends on apix-common and apix-verification; install them
  # to the local repository first so Maven can resolve them during the
  # liquibase:update goal (no source files yet — this completes in seconds).
  info "Installing shared modules to local repository…"
  mvn -q install -pl apix-common,apix-verification -DskipTests

  info "Running Liquibase migrations on $JDBC_URL"
  mvn -q liquibase:update -pl apix-registry \
    -Dliquibase.url="$JDBC_URL" \
    -Dliquibase.username="$DB_USER" \
    -Dliquibase.password="$DB_PASS"
  info "Migrations applied"
fi

# ── Done ──────────────────────────────────────────────────────────────────────
echo ""
echo -e "${GREEN}${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo -e "${GREEN}${BOLD}  APIX dev environment ready${NC}"
echo -e "${GREEN}${BOLD}━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━${NC}"
echo ""
echo "  Start all services:   ./scripts/dev.sh"
echo "  View logs:            ./scripts/logs.sh [registry|portal|spider]"
echo "  Stop everything:      ./scripts/stop.sh"
echo "  Full reset (drop DB): ./scripts/reset.sh"
echo ""
echo "  Registry API  →  http://localhost:8180"
echo "  Portal        →  http://localhost:8081"
echo ""