#!/bin/bash

# Script variables
SF2_ENVIRONMENT=prod
REPOSITORY=
DEPLOY_BASE_DIR=/var/www
DEPLOY_DIR=$DEPLOY_BASE_DIR/`date +%s`
USAGE="Usage: $0 install|update [git_repository_url]"

# Commands
MKDIR=/bin/mkdir
GIT=/usr/bin/git
PHP=/usr/bin/php
CP=/bin/cp
RM=/bin/rm
CHMOD=/bin/chmod
LN=/bin/ln
SERVICE=/sbin/service

if [ $# -lt 1 ]; then
    echo -e $USAGE;
    exit;
fi

if [ $# -eq 2 ]; then
    REPOSITORY=$2
elif [ -z $REPOSITORY ]; then
    echo -e 'No git repository specified!\nEither set the REPOSITORY variable in this script, or specify the git repository url argument';
    exit;
fi

if [ $1 == "install" ]; then
    echo 'Fetching the latest code...';
    $MKDIR $DEPLOY_DIR
    $GIT clone $REPOSITORY $DEPLOY_DIR/
    $PHP $DEPLOY_DIR/bin/vendors install
elif [ $1 == "update" ]; then
    echo 'Fetching the latest code...';
    if [ ! -d $DEPLOY_BASE_DIR/current ]; then
        echo "$DEPLOY_BASE_DIR/current does not exist. Maybe you need to run install first?"
        exit;
    fi
    $CP -LR $DEPLOY_BASE_DIR/current $DEPLOY_DIR
    cd $DEPLOY_DIR;
    $GIT pull origin master
    $GIT reset --hard HEAD
else
    echo -e $USAGE;
    exit;
fi

# Set app/cache permissions
if [ -d $DEPLOY_DIR/app/cache ]; then
    $CHMOD -R 777 $DEPLOY_DIR/app/cache
fi

# Clear and warmup the symfony2 cache
if [ -f $DEPLOY_DIR/app/console ]; then
    $RM -rf $DEPLOY_DIR/app/cache/$SF2_ENVIRONMENT
    $PHP $DEPLOY_DIR/app/console --env=$SF2_ENVIRONMENT cache:warmup
fi

# Set app/cache permissions again
if [ -d $DEPLOY_DIR/app/cache ]; then
    $CHMOD -R 777 $DEPLOY_DIR/app/cache
fi

# Set app/logs permissions
if [ -d $DEPLOY_DIR/app/logs ];
then
    $CHMOD -R 777 $DEPLOY_DIR/app/logs
fi

# Install and symlink assets
if [ -f $DEPLOY_DIR/app/console ]; then
    $PHP $DEPLOY_DIR/app/console --env=$SF2_ENVIRONMENT assets:install --symlink $DEPLOY_DIR/web
fi

# Update current symlink
if [ -L $DEPLOY_BASE_DIR/current ] || [ -e $DEPLOY_BASE_DIR/current ]; then
    $RM $DEPLOY_BASE_DIR/current
fi
$LN -s $DEPLOY_DIR $DEPLOY_BASE_DIR/current

# Restart php-fpm to clear the APC caches
$SERVICE php-fpm restart

echo 'Deployment complete.';