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

if [ "$#" -lt 3 ] || [ "$#" -gt 4 ]; then
  echo "Usage: scripts/deploy-raspi.sh <ssh-user> <ssh-host> <git-repo> [domain]"
  exit 1
fi

ssh_user="$1"
ssh_host="$2"
repo_url="$3"
domain="${4:-DietPi.ntp.kentcommunications.com}"
deploy_path="${DEPLOY_PATH:-/var/www/warehouse}"
deploy_ref="${DEPLOY_REF:-master}"

ssh "${ssh_user}@${ssh_host}" bash -s -- "$repo_url" "$domain" "$deploy_path" "$deploy_ref" <<'REMOTE'
set -euo pipefail

repo_url="$1"
domain="$2"
deploy_path="$3"
deploy_ref="$4"
owner="$(id -un)"
group="$(id -gn)"

set_env() {
  file="$1"
  key="$2"
  value="$3"
  if grep -q "^${key}=" "$file"; then
    sed -i "s|^${key}=.*|${key}=${value}|" "$file"
  else
    printf '%s=%s\n' "$key" "$value" >> "$file"
  fi
}

sudo apt-get update
sudo apt-get install -y \
  git nginx composer \
  php php-cli php-fpm php-mbstring php-xml php-curl php-zip php-sqlite3 php-mysql

php_version="$(php -r 'echo PHP_MAJOR_VERSION . "." . PHP_MINOR_VERSION;')"
php_fpm_service="php${php_version}-fpm"
php_fpm_socket="/run/php/${php_fpm_service}.sock"

sudo mkdir -p "$(dirname "$deploy_path")"
if [ ! -d "$deploy_path/.git" ]; then
  sudo git clone --branch "$deploy_ref" --single-branch "$repo_url" "$deploy_path"
  sudo chown -R "$owner:$group" "$deploy_path"
else
  git -C "$deploy_path" fetch --prune origin
  git -C "$deploy_path" checkout "$deploy_ref"
  git -C "$deploy_path" reset --hard "origin/$deploy_ref"
fi

cd "$deploy_path"
if [ ! -f .env ] && [ -f .env.example ]; then
  cp .env.example .env
fi
set_env .env APP_ENV prod
set_env .env DB_CONNECTION sqlite
set_env .env DB_SQLITE_PATH "$deploy_path/database/database.sqlite"

composer install --no-dev --no-interaction --prefer-dist --optimize-autoloader --ignore-platform-reqs

mkdir -p storage/framework/views database
touch database/database.sqlite
sudo chgrp -R www-data storage database
sudo chmod -R g+rwX storage database
sudo find storage database -type d -exec chmod 2775 {} \;
sudo chmod 664 database/database.sqlite

php command.php migrate

sudo tee /etc/systemd/system/warehouse-queue.service >/dev/null <<EOF
[Unit]
Description=Warehouse queue worker
After=network.target

[Service]
Type=simple
User=${owner}
Group=www-data
WorkingDirectory=${deploy_path}
ExecStart=/usr/bin/php ${deploy_path}/command.php queue:work
Restart=always
RestartSec=3

[Install]
WantedBy=multi-user.target
EOF

sudo tee /etc/nginx/sites-available/warehouse >/dev/null <<EOF
server {
    listen 80;
    listen [::]:80;
    server_name ${domain};
    root ${deploy_path}/public;
    index index.php;

    location / {
        try_files \$uri \$uri/ /index.php?\$query_string;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:${php_fpm_socket};
    }

    location ~ /\. {
        deny all;
    }
}
EOF

sudo ln -sfn /etc/nginx/sites-available/warehouse /etc/nginx/sites-enabled/warehouse
sudo rm -f /etc/nginx/sites-enabled/default
sudo systemctl daemon-reload
sudo systemctl enable "$php_fpm_service" nginx warehouse-queue.service
sudo systemctl restart "$php_fpm_service"
sudo nginx -t
sudo systemctl restart nginx
sudo systemctl restart warehouse-queue.service

echo "Deployment complete: http://${domain}"
REMOTE