#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD
language=$YNH_APP_ARG_LANGUAGE
ssoenabled=$YNH_APP_ARG_SSOENABLED
port=$YNH_APP_ARG_PORT
timezone=$(cat /etc/timezone)

### If it's a multi-instance app, meaning it can be installed several times independently
### The id of the app as stated in the manifest is available as $YNH_APP_ID
### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
### The app instance name is available as $YNH_APP_INSTANCE_NAME
###    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
###    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
###    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
### The app instance name is probably what interests you most, since this is
### guaranteed to be unique. This is a good unique identifier to define installation path,
### db names, ...
app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

final_path=/var/www/$app
test ! -e "$final_path" || ynh_die "This path already contains a folder"

# Normalize the url path syntax
path_url=$(ynh_normalize_url_path $path_url)

# Check web path availability
ynh_webpath_available $domain $path_url
# Register (book) web path
ynh_webpath_register $app $domain $path_url

# Check port availability
yunohost app checkport "$port" \
  || ynh_die "This port is already used"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================

# 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_url"


#=================================================
# STANDARD MODIFICATIONS
#=================================================

#=================================================
# CREATE A MYSQL DATABASE
#=================================================

# 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 DEPENDENCIES
#=================================================

# Install packages
ynh_install_app_dependencies php5-gd php5-curl php5-imagick php5-cli php5-zmq

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

ynh_app_setting_set "$app" final_path "$final_path"

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

#=================================================
# SET CONFIGURATION FILE
#=================================================

# TODO: add checksum
# Set database configuration
cp "${tmp_path}/config/"{db.example.inc.php,db.inc.php}
ynh_replace_string "'username'    => 'username'" "'username'    => '$db_user'" \
    "${tmp_path}/config/db.inc.php"
ynh_replace_string "'password'    => 'password'" "'password'    => '$db_pwd'" \
    "${tmp_path}/config/db.inc.php"
## TODO: consider installation in a subpath
ynh_replace_string "'/ws/'" "'${path_url%/}/ws/'" \
    "${tmp_path}/app/assets/js/movim_websocket.js"

# Move Movim source code
mv "$tmp_path" "$final_path"

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create movim system user and set permissions
useradd -d /var/www/movim -s /bin/sh movim

#=================================================
# SET PERMISSIONS
#=================================================

chown -R movim:www-data "$final_path"
find "${final_path}/" -type f -print0 | xargs -0 chmod 0644
find "${final_path}/" -type d -print0 | xargs -0 chmod 0755
chmod 400 "${final_path}/config/db.inc.php"

# Install PHP dependencies using composer
(curl -sS https://getcomposer.org/installer \
     | exec_cmd php -- --install-dir="$final_path" \
 && exec_cmd php composer.phar config --global discard-changes true \
 && exec_cmd php composer.phar install --no-interaction) \
  || ynh_die "Unable to install Movim dependencies."


#=================================================
# Set Movim database and configuration
#=================================================

# 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"

#=================================================
# SETUP SYSTEMD
#=================================================

# Copy init script or systemd service
ynh_replace_string "YHURL" "${domain}${path_url}" ../conf/movim.{service,init}
ynh_replace_string "YHDIR" "${final_path}"        ../conf/movim.{service,init}
ynh_replace_string "YHPORT" "${port}"             ../conf/movim.{service,init}

if [ -d /run/systemd/system ]; then
    cp ../conf/movim.service /etc/systemd/system/
    systemctl daemon-reload
    systemctl enable movim.service
    systemctl start movim.service
else
    cp ../conf/movim.init /etc/init.d/movim
    chmod 755 /etc/init.d/movim
    update-rc.d movim defaults
    /etc/init.d/movim start
fi

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# php-fpm configuration
ynh_replace_string "YHTZ" "$timezone" ../conf/php-fpm.conf
cp ../conf/php-fpm.conf /etc/php5/fpm/pool.d/movim.conf

#=================================================
# NGINX CONFIGURATION
#=================================================

# Nginx configuration
ynh_replace_string "PATHTOCHANGE" "$path_url" ../conf/nginx.conf
ynh_replace_string "ALIASTOCHANGE" "$final_path/" ../conf/nginx.conf
ynh_replace_string "YHPORT" "$port" ../conf/nginx.conf
ynh_replace_string "//ws/" "/ws/" ../conf/nginx.conf # Avoid duplicate /
cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/movim.conf


#=================================================
# GENERIC FINALIZATION
#=================================================


#=================================================
# SETUP SSOWAT
#=================================================

# SSOwat configuration
if [[ "$ssoenabled" = "No" ]]; then
    ynh_app_setting_set "$app" skipped_uris "/"
    exec_cmd php mud.php config --xmppwhitelist="$domain"
else
    ynh_app_setting_set "$app" unprotected_uris "/"
    apply_sso_patch
fi

#=================================================
# RELOAD NGINX
#=================================================

# Reload services
service php5-fpm restart
service nginx reload