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

# Bootstraps the Dockerized dmtools stack (php, nginx, database) on a server.
# - Builds and starts the containers
# - Installs composer dependencies
# - Ensures APP_SECRET is set (generated into .env.local if empty)
# - Creates and migrates the database
# - Installs + compiles AssetMapper assets
# - Prints helpful info on success
#
# Usage:
#   ./docker/setup.sh            # full setup
#   ./docker/setup.sh --no-build # skip image rebuild
#   ./docker/setup.sh --recreate # force-recreate containers
#   ./docker/setup.sh --down     # stop and remove containers
#
# NGINX_PORT=8086 ./docker/setup.sh   # if 8085 is already taken on this host
# (or set NGINX_PORT / DB_HOST_PORT once in .env.local and every run picks it up)

ROOT_DIR=$(cd "$(dirname "$0")"/.. && pwd)
PROJECT=dmtools

for var in NGINX_PORT DB_HOST_PORT; do
  if [ -z "${!var:-}" ] && grep -q "^${var}=" "$ROOT_DIR/.env.local" 2>/dev/null; then
    export "$var=$(grep "^${var}=" "$ROOT_DIR/.env.local" | tail -1 | cut -d= -f2-)"
  fi
done

if docker compose version >/dev/null 2>&1; then
  DOCKER_COMPOSE="docker compose"
elif command -v docker-compose >/dev/null 2>&1; then
  DOCKER_COMPOSE="docker-compose"
else
  echo "Error: Docker Compose not found." >&2
  exit 1
fi

dc() { (cd "$ROOT_DIR" && $DOCKER_COMPOSE -p "$PROJECT" -f docker-compose.yml "$@"); }

REBUILD=1
RECREATE=0
DOWN_ONLY=0
for arg in "$@"; do
  case "$arg" in
    --no-build) REBUILD=0 ;;
    --recreate) RECREATE=1 ;;
    --down) DOWN_ONLY=1 ;;
    *) echo "Unknown option: $arg" >&2; exit 1 ;;
  esac
done

command -v docker >/dev/null 2>&1 || { echo "Error: docker is required." >&2; exit 1; }

if [ ! -f "$ROOT_DIR/.env.local" ]; then
  echo "Error: .env.local is missing. Copy .env to .env.local and set real" >&2
  echo "       APP_SECRET, DB_PASSWORD and DB_ROOT_PASSWORD first." >&2
  exit 1
fi

if [ "$DOWN_ONLY" -eq 1 ]; then
  dc down
  exit 0
fi

# docker-compose v1 can choke recreating a container in place on any config
# change; removing them first sidesteps that. Safe: state lives in named volumes.
dc rm -fs php nginx database 2>/dev/null || true

BUILD_ARGS=()
[ "$REBUILD" -eq 1 ] && BUILD_ARGS+=("--build")
[ "$RECREATE" -eq 1 ] && BUILD_ARGS+=("--force-recreate")

dc up -d "${BUILD_ARGS[@]}"

# Setup one-offs run as root: the bind-mounted project dir is owned by the
# deploying user, not the image's www-data, so www-data can't write vendor/ etc.
pexec() { dc exec -T -u root php "$@"; }

printf "Waiting for database to be healthy..."
for i in {1..60}; do
  id=$(dc ps -q database 2>/dev/null || true)
  status=$([ -n "$id" ] && docker inspect -f '{{.State.Health.Status}}' "$id" 2>/dev/null || echo "")
  if [ "$status" = "healthy" ]; then echo " OK"; break; fi
  printf "."; sleep 2
  [ "$i" -eq 60 ] && echo -e "\nWarning: database not healthy yet, continuing anyway."
done

pexec composer install --no-interaction

# Prod compiles config into a cached container under var/cache/prod/ (persistent
# php_var volume) and does NOT auto-detect config changes - clear it every run.
echo "Clearing and warming the cache..."
pexec php bin/console cache:clear --no-interaction

if grep -q '^APP_SECRET=$' "$ROOT_DIR/.env" 2>/dev/null \
   && ! grep -q '^APP_SECRET=' "$ROOT_DIR/.env.local" 2>/dev/null; then
  echo "Generating APP_SECRET in .env.local..."
  printf 'APP_SECRET=%s\n' "$(openssl rand -hex 16)" >> "$ROOT_DIR/.env.local"
  dc up -d php   # pick up the new env value
fi

echo "Creating database if it doesn't exist..."
pexec php bin/console doctrine:database:create --if-not-exists

echo "Running migrations..."
pexec php bin/console doctrine:migrations:migrate -n --allow-no-migration

echo "Installing and compiling assets..."
pexec php bin/console importmap:install
pexec php bin/console asset-map:compile

# LAST: the root-run commands above leave new files under var/ root-owned;
# php-fpm runs as www-data and must be able to write there at runtime.
pexec chown -R www-data:www-data var

# php.ini sets opcache.validate_timestamps=0, so php-fpm keeps serving the
# old compiled code/templates until it restarts. Bounce it so a --no-build
# run (git pull + this script) actually picks up the new cache.
dc restart php

# Make sure Nginx Proxy Manager can reach this stack's nginx by name.
# Harmless (and a no-op) if already connected; NPM keeps it across restarts.
NPM_CONTAINER="${NPM_CONTAINER:-nginx_app_1}"
if docker inspect "$NPM_CONTAINER" >/dev/null 2>&1; then
  docker network connect "${PROJECT}_default" "$NPM_CONTAINER" 2>/dev/null \
    && echo "Connected $NPM_CONTAINER to ${PROJECT}_default." \
    || true
fi

APP_URL="http://localhost:${NGINX_PORT:-8085}"
cat <<EOT

Setup complete!

Open the app:  $APP_URL   (real access is via https://dmtools.fvandenberg.nl through NPM)

NPM proxy host: scheme http, forward "dmtools-nginx" port 80.
If NPM ($NPM_CONTAINER) can't reach it, run:
  docker network connect ${PROJECT}_default $NPM_CONTAINER

Create the first user:
  $DOCKER_COMPOSE -p $PROJECT exec php php bin/console app:user:create you@example.com --admin

Common commands (from the project root):
  $DOCKER_COMPOSE -p $PROJECT logs -f nginx
  $DOCKER_COMPOSE -p $PROJECT logs -f php
  $DOCKER_COMPOSE -p $PROJECT exec php bash
  $DOCKER_COMPOSE -p $PROJECT down

Re-run this script any time. Use --no-build to skip rebuilding images.
EOT