deploy.sh

#!/bin/sh

# Deployment script
# Execute as normal user, it will ask for permissions as needed
# Configure the following variables

DIR=`dirname $0`
DIR=`realpath $DIR`

# Set to "yes" to setup for development server
# Any other value sets up for release
DEBUG="yes"

# Virtual environment folder
VENV_FOLDER=".venv"
VENV="$DIR/.venv"
PIP="$VENV/bin/pip"
PYTHON="$VENV/bin/python"
VIRTUALENV_EXE="~/.local/bin/virtualenv"
SYSTEM_PYTHON3_EXE='python3.6'

# 100% secure
# CAREFUL: will destroy previous db and user with this name
# Don't change if you dont know what you are doing
DB_NAME="asoures"
DB_PASS="asoures"

# default backend superuser
SU_USER="asoures"
SU_EMAIL="asoures@asoures.gr"
SU_PASS="asoures"

# Skip steps if already done, set to "yes"
SKIP_PACKAGE_INSTALLATION="no"
SKIP_NPM_INSTALL="no"
SKIP_NPM_BUILD="yes"
SKIP_PGRES_CREATE_DB_AND_USER="no"
SKIP_PGRES_DISABLE_FORCED_SSL="no"
SKIP_SETUP_VENV="no"
SKIP_UPDATE_HOSTS="no"
SKIP_CREATE_SUPERUSER="no"

if [ "x$SKIP_PACKAGE_INSTALLATION" != "xyes" ] ; then
    echo "Installing packages..."
    sudo apt-get update -y
    sudo apt-get install postgresql postgresql-contrib postgis python3 python3-pip apache2 apache2-dev libapache2-mod-wsgi nodejs npm -y
fi

if [ "x$SKIP_NPM_INSTALL" != "xyes" ]; then
    echo "Installing node_modules"
    cd "$DIR/project/client" && npm install
fi

if [ "x$SKIP_NPM_BUILD" != "xyes" ]; then
    echo "Building front-end"
    cd "$DIR/project/client" && npm run build
fi

if [ "x$SKIP_PGRES_CREATE_DB_AND_USER" != "xyes" ]; then
    echo "Creating database"
    sudo -u postgres dropdb "$DB_NAME" --if-exists
    sudo -u postgres dropuser "$DB_NAME" --if-exists
    sudo userdel "$DB_NAME"

    # create postgres role
    sudo -u postgres psql -c "CREATE USER $DB_NAME WITH PASSWORD '$DB_PASS' SUPERUSER;" 
    sudo -u postgres createdb "$DB_NAME"

    # create normal user
    sudo useradd -M -s /usr/sbin/nologin "$DB_NAME"
    echo "$DB_PASS" >> "$DIR/.tmp"
    echo "$DB_PASS" >> "$DIR/.tmp"
    sudo passwd "$DB_NAME" < "$DIR/.tmp"
    sudo -- sh -c "echo '[User]\nSystemAccount=true' > '/var/lib/AccountsService/users/$DB_NAME'"
    rm "$DIR/.tmp"
fi

if [ "x$SKIP_PGRES_DISABLE_FORCED_SSL" != "xyes" ]; then
    echo "Disabling postgresql forced SSL option"

    postgresql_conf="/etc/postgresql/10/main/postgresql.conf"
    if [ -f "$postgresql_conf" ]; then
        echo "Config file: $postgresql_conf"
        sudo cp "$postgresql_conf" "${postgresql_conf}.bak"
        cat "$postgresql_conf" | sed "s,ssl\s*=\s*on,ssl = off,g" > "$DIR/.conf"
        sudo cp "$DIR/.conf" $postgresql_conf
        rm "$DIR/.conf"
        echo "Updated successfully"
    else
        echo "WARNING: postgresql.conf not found, manually edit and set option 'ssl = off'"
    fi
fi

[ -e "$DIR/asoures.egg-info" ] && echo "Removing old asoures.egg-info" && rm -rf "$DIR/asoures.egg-info"
if [ "x$SKIP_SETUP_VENV" != "xyes" ]; then
    echo "Installing virtualenv"
    pip3 install --user virtualenv > /dev/null

    echo "Setting up python virtual environment in $VENV"
    [ -e "$VENV" ] && rm -rf "$VENV" # trust me
    mkdir -p "$VENV"

    if [ ! -e $VIRTUALENV_EXE ]; then
        VIRTUALENV_EXE=`which virtualenv`
    fi

    echo "Using virtualenv executable: '$VIRTUALENV_EXE'"
    "$VIRTUALENV_EXE" --python="$SYSTEM_PYTHON3_EXE" "$VENV" > /dev/null

    echo "Installing django and other dependencies"
    cd "$DIR" && "$PIP" install -e .[dev] > /dev/null
fi

echo -n "Updating environment file "
echo "DATABASE_URL=postgis://$DB_NAME:$DB_PASS@localhost/$DB_NAME" > "$DIR/.env"
if [ "x$DEBUG" != "xyes" ]; then
    echo "(release)"
    echo "DEBUG=false" >> "$DIR/.env"
    echo "SECRET_KEY=asdfhqweughkjhbkjgiuqwerhfbwergtqwiureyt" >> "$DIR/.env"
    echo "ALLOWED_HOSTS=*" >> "$DIR/.env"
else
    echo "(debug)"
    echo "DEBUG=true" >> "$DIR/.env"
fi

echo "Running migrations"
cd "$DIR" && $PYTHON manage.py migrate > /dev/null

if [ "x$SKIP_UPDATE_HOSTS" != "xyes" ]; then
    echo "Updating hosts"
    x=`grep "^\s*127.0.0.1\s\s*asoures\.gr\s*$" /etc/hosts`
    if [ "x$x" = "x" ]; then
        sudo -- sh -c "echo '\n\n127.0.0.1 asoures.gr' >> /etc/hosts"
    else
        echo "no changes needed in /etc/hosts"
    fi
fi

if [ "x$SKIP_CREATE_SUPERUSER" != "xyes" ]; then
    # based on https://stackoverflow.com/questions/6244382/how-to-automate-createsuperuser-on-django
    echo "Creating superuser $SU_USER"
    $PYTHON "$DIR/manage.py" addroot "$SU_USER" "$SU_EMAIL" "$SU_PASS"
fi

echo "


-----------------
Done. Next Steps:
-----------------

Populate database:
    $ python manage.py populatedb 100           # add 100 shops and products to db

Development servers:
    $ cd project/client && npm run start  (ReactJS)
    $ python manage.py runserver 8000     (Django)

Start HTTP or HTTPS server for Django and ReactJS build:
    $ python manage.py runhttps 8443
    $ python manage.py runhttp 8000

"