#!/bin/sh

check_retval(){
  case $1 in
    1|255)
      echo "Stopped"
      exit;;
  esac
}

check_input(){
  if [ "$1" = "" ] 
  then  
    echo "Can't be empty" 
    exit 
  fi
}


exec 3>&1
domain_root=$(dialog \
  --title "Configure" \
  --ok-label "Ok" \
  --clear \
  --cancel-label "Exit" \
  --inputbox "Domain root:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $domain_root


exec 3>&1
sub_domain=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Subdomain (can be empty):" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-

exec 3>&1
signed=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --menu "Use certificate signed by Let's Encrypt?" 12 51 2 \
    "Y" "" \
    "n" "" \
  2>&1 1>&3)
check_retval $?
exec 3>&-

[ "${signed}" = "${signed#[Yy]}" ]
signed=$?


if [ $signed -ne 0 ]; then
  exec 3>&1
  email=$(dialog \
    --title "Configure" \
    --clear \
    --ok-label "Ok" \
    --cancel-label "Exit" \
    --inputbox "Email:" 12 51 \
    2>&1 1>&3)
  check_retval $?
  exec 3>&-
  check_input $email
fi

if [ -z "$sub_domain" ]
then
  domain="${domain_root}"
else
  domain="${sub_domain}.${domain_root}"
fi

root="$(git rev-parse --show-toplevel)"
mkdir -p root/docker/bootstrap

cat > ./docker/bootstrap/bootstrap.env <<EOF
#!/bin/sh
email=${email}
domain=${domain}
domain_root=${domain_root}
signed=${signed}
EOF

chmod +x ./docker/bootstrap/bootstrap.env

docker-compose -f docker/bootstrap/bootstrap.yaml up

git_dir=$PWD
while [ ! -d .git ]; do
    git_dir=$(dirname "${git_dir}")
done

cd "${git_dir}" || exit

if [ ! -f ./docker/bootstrap/bootstrap.env ]; then
   printf "bootstrap.env missing! Please run the bootstrap_certificates script.\n"
   exit 1
fi

. ./docker/bootstrap/bootstrap.env

exec 3>&1
dbms=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --menu "Select DBMS:" 12 51 2 \
    "postgres" "" \
    "mariadb" "" \
  2>&1 1>&3)
check_retval $?
exec 3>&-

exec 3>&1
db=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Social database name:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-

if [ "${dbms}" = 'mariadb' ] 
then
  exec 3>&1
  user=$(dialog \
    --title "Configure" \
    --clear \
    --ok-label "Ok" \
    --cancel-label "Exit" \
    --inputbox "Database user:" 12 51 \
    2>&1 1>&3)
  check_retval $?
  exec 3>&-
  check_input $user
fi


exec 3>&1
password=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Database password:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $password

exec 3>&1
sitename=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Sitename:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $sitename

exec 3>&1
admin_nick=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Admin nickname:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $admin_nick

exec 3>&1
admin_password=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Admin password:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $admin_password

exec 3>&1
profile=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --menu "Site profile:" 12 51 4 \
    "public"  "" \
    "private"  "" \
    "community"  "" \
    "single_user" "" \
  2>&1 1>&3)
check_retval $?
exec 3>&-

exec 3>&1
mailer_dsn=$(dialog \
  --title "Configure" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --inputbox "Mailer dsn:" 12 51 \
  2>&1 1>&3)
check_retval $?
exec 3>&-
check_input $mailer_dsn

mkdir -p root/docker/db

if [ "${dbms}" = 'mariadb' ]; then
  exec 3>&1
  db_root_password=$(dialog \
    --title "Configure" \
    --clear \
    --ok-label "Ok" \
    --cancel-label "Exit" \
    --inputbox "DB root password" 12 51 \
    2>&1 1>&3)
  check_retval $?
  exec 3>&-
  check_input $db_root_password

  cat > ./docker/db/db.env <<EOF
DBMS=${dbms}
MYSQL_ROOT_PASSWORD=${db_root_password}
EOF

    database_url="DATABASE_URL=mysql://${user}:${password}@db:3306/${db}"

else
    cat > ./docker/db/db.env <<EOF
DBMS=${dbms}
POSTGRES_USER=postgres
POSTGRES_PASSWORD=${password}
EOF

    user='postgres'
    database_url="DATABASE_URL=postgresql://${user}:${password}@db:5432/${db}"

fi

echo "${database_url}" >> .env.local

mkdir -p root/docker/social

cat > ./docker/social/social.env <<EOF
SOCIAL_DBMS="${dbms}"
SOCIAL_DB="${db}"
SOCIAL_USER="${user}"
SOCIAL_PASSWORD="${password}"
SOCIAL_DOMAIN="${domain}"
SOCIAL_SITENAME="${sitename}"
SOCIAL_ADMIN_NICK="${admin_nick}"
SOCIAL_ADMIN_PASSWORD="${admin_password}"
SOCIAL_ADMIN_EMAIL="${email}"
SOCIAL_SITE_PROFILE="${profile}"
MAILER_DSN="${mailer_dsn}"
EOF


##docker-compose 

echo "version: '3.3'" > docker-compose.yaml

exec 3>&1
choice=$(dialog \
  --title "Services" \
  --clear \
  --ok-label "Ok" \
  --cancel-label "Exit" \
  --checklist "Services to include in docker-compose:" 12 44 6 \
    1 "nginx" on \
    2 "certbot" on \
    3 "php" on \
    4 "db" on \
    5 "redis" on \
  2>&1 1>&3)
check_retval $?
exec 3>&-


echo "\nservices:" >> docker-compose.yaml

case $choice in *"1"*)
    echo "  nginx:
    image: nginx:alpine
    depends_on:
      - php
    restart: always
    tty: false
    ports:
      - 80:80
      - 443:443
    volumes:
      # Nginx
      - ./docker/nginx/nginx.conf:/var/nginx/social.conf
      - ./docker/nginx/domain.sh:/var/nginx/domain.sh
      # Certbot
      - ./docker/certbot/www:/var/www/certbot
      - ./docker/certbot/.files:/etc/letsencrypt
      # Social
      - ./public:/var/www/social/public
    env_file:
      - ./docker/bootstrap/bootstrap.env
      - ./docker/db/db.env
    command: /bin/sh -c '/var/nginx/domain.sh;
                         while :; do
                             sleep 6h & wait \$\${!};
                             nginx -s reload;
                         done &
                         nginx -g \"daemon off;\"'\n" >> docker-compose.yaml;;
esac

case $choice in *"2"*)
    echo  "  certbot:
    image: certbot/certbot
    depends_on:
      - nginx
    # Check for certificate renewal every 12h as
    # recomnended by Let's Encryot
    entrypoint: /bin/sh -c 'trap exit TERM;
                            while :; do
                                certbot renew > /dev/null;
                                sleep 12h & wait \$\${!};
                            done'
    volumes:
      - ./docker/certbot/www:/var/www/certbot
      - ./docker/certbot/.files:/etc/letsencrypt\n" >> docker-compose.yaml;;
esac

case $choice in *"3"*)
        echo  "  php:
    build: docker/php
    depends_on:
      - db
    restart: always
    tty: true
    ports:
      - 9000:9000
    volumes:
      # Entrypoint
      - ./docker/php/entrypoint.sh:/entrypoint.sh
      - ./docker/db/wait_for_db.sh:/wait_for_db.sh
      - ./docker/social/install.sh:/var/entrypoint.d/social_install.sh
      # Main files
      - .:/var/www/social
    env_file:
      - ./docker/social/social.env
      - ./docker/db/db.env
    command: /entrypoint.sh\n" >> docker-compose.yaml;;
esac

case $choice in *"4"*)
        echo "  db:
    image: postgres:alpine
    restart: always
    tty: false
    ports:
      - 5432:5432
    environment:
      - PGDATA=/var/lib/postgres/data
    env_file:
      - ./docker/db/db.env
    volumes:
      - database:/var/lib/postgres/data\n" >> docker-compose.yaml;;
esac

case $choice in *"5"*)
        echo "  redis:
    image: redis:alpine
    restart: always
    tty: false
    ports:
      - 6379:6379" >> docker-compose.yaml;;
esac

echo "\nvolumes:\n  database:" >> docker-compose.yaml
clear