#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu

app="movim"

# Retrieve arguments
domain=$1
path=${2:-/}
admin=$3
password=$4
language=$5
ssoenabled=$6
port=$7
timezone=`cat /etc/timezone`

# Source YunoHost and local helpers
source /usr/share/yunohost/helpers
source ./_common.sh

# Check domain/path availability
sudo yunohost app checkurl "${domain}${path}" -a "$app" \
  || exit 1

# Check port availability
sudo yunohost app checkport "$port" \
  || exit 1

# Check user availability
ynh_user_exists "$admin" \
  || ynh_die "The chosen admin user does not exist."

# Check password not empty
[[ -n "$password" ]] \
  || ynh_die "You must set an admin password."

# Check timezone
[[ -n "$timezone" ]] \
  || ynh_die "Could not detect timezone, please check /etc/timezone." \
  && echo "Detected timezone: $timezone"

# Save app settings
ynh_app_setting_set "$app" admin "$admin"
ynh_app_setting_set "$app" ssoenabled "$ssoenabled"
ynh_app_setting_set "$app" port "$port"
ynh_app_setting_set "$app" path "$path"

# Generate and save random MySQL password
db_pwd=$(ynh_string_random 12)
ynh_app_setting_set "$app" mysqlpwd "$db_pwd"

# Use 'movim' as database name and user
db_user=movim
db_name=movim

# Create MySQL database
ynh_mysql_create_db "$db_name" "$db_user" "$db_pwd"

# Install packages
ynh_package_install php5-gd php5-curl php5-imagick php5-cli

# Download Movim source code
tmp_path=/tmp/movim-git
sudo rm -rf "$tmp_path"
(git clone --quiet "$GIT_REPO" "$tmp_path" \
   && cd "$tmp_path" && git checkout --quiet "$HEAD_COMMIT") \
  || ynh_die "Unable to download Movim source code."

# Set database configuration
cp "${tmp_path}/config/"{db.example.inc.php,db.inc.php}
sed -i "s@'username'    => 'username'@'username'    => '$db_user'@g" \
    "${tmp_path}/config/db.inc.php"
sed -i "s@'password'    => 'password'@'password'    => '$db_pwd'@g" \
    "${tmp_path}/config/db.inc.php"
## FIXME: consider installation in a subpath
sed -i "s@'/ws/'@'${path%/}/ws/'@g" \
    "${tmp_path}/app/assets/js/movim_websocket.js"

# Move Movim source code
sudo mv "$tmp_path" "$DESTDIR"

# Create movim system user and set permissions
sudo useradd -d /var/www/movim -s /bin/sh movim
sudo chown -R movim:www-data "$DESTDIR"
sudo find "${DESTDIR}/" -type f -print0 | sudo xargs -0 chmod 0644
sudo find "${DESTDIR}/" -type d -print0 | sudo xargs -0 chmod 0755
sudo chmod 400 "${DESTDIR}/config/db.inc.php"

# Install PHP dependencies using composer
(curl -sS https://getcomposer.org/installer \
     | exec_cmd php -- --quiet --install-dir="$DESTDIR" \
 && exec_cmd php composer.phar config --global discard-changes true \
 && exec_cmd php composer.phar install -n) \
  || ynh_die "Unable to install Movim dependencies."

# Set Movim database and configuration
exec_cmd php mud.php db --set
exec_cmd php mud.php config --loglevel=1 \
    --locale="$language" --timezone="$timezone" \
    --username="$admin" --password="$password"

# Copy init script or systemd service
sudo sed -i "s@YHURL@${domain}${path}@g" ../conf/movim.{service,init}
sudo sed -i "s@YHDIR@${DESTDIR}@g" ../conf/movim.{service,init}
sudo sed -i "s@YHPORT@${port}@g" ../conf/movim.{service,init}
if [ -d /run/systemd/system ]; then
    sudo cp ../conf/movim.service /etc/systemd/system/
    sudo systemctl --quiet daemon-reload
    sudo systemctl --quiet enable movim.service
    sudo systemctl --quiet start movim.service
else
    sudo cp ../conf/movim.init /etc/init.d/movim
    sudo chmod 755 /etc/init.d/movim
    sudo update-rc.d movim defaults
    sudo /etc/init.d/movim start
fi

# php-fpm configuration
sed -i "s@YHTZ@$timezone@g" ../conf/php-fpm.conf
sudo cp ../conf/php-fpm.conf /etc/php5/fpm/pool.d/movim.conf

# Nginx configuration
sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
sed -i "s@ALIASTOCHANGE@$DESTDIR/@g" ../conf/nginx.conf
sed -i "s@YHPORT@$port@g" ../conf/nginx.conf
sed -i "s@//ws/@/ws/@g" ../conf/nginx.conf # Avoid duplicate /
sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/movim.conf

# SSOwat configuration
if [[ "$ssoenabled" = "0" ]]; then
    ynh_app_setting_set "$app" skipped_uris "/"
    exec_cmd php mud.php config --xmppwhitelist="$domain"
else
    ynh_app_setting_set "$app" unprotected_uris "/"
    apply_sso_patch
fi

# Reload services
sudo service php5-fpm restart
sudo service nginx reload