#!/bin/bash

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

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

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# 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=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
language=$YNH_APP_ARG_LANGUAGE
password="$YNH_APP_ARG_PASSWORD"
export=$YNH_APP_ARG_EXPORT

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=2

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

# Register (book) web path
ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=2

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=path --value=$path_url
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=language --value=$language
ynh_app_setting_set --app=$app --key=password --value="$password"
ynh_app_setting_set --app=$app --key=export --value=$export

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find an available port
port=$(ynh_find_port --port=9001)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=6

ynh_install_nodejs --nodejs_version=$nodejs_version

if [ "$export" = "abiword" ]; then
	ynh_exec_warn_less ynh_install_app_dependencies $abiword_app_depencencies
elif [ "$export" = "libreoffice" ]; then
	ynh_exec_warn_less ynh_install_app_dependencies $libreoffice_app_dependencies
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=4

# Create a system user
ynh_system_user_create --username=$app --home_dir=$final_path

#=================================================
# CREATE A POSTQRESQL DATABASE
#=================================================
ynh_script_progression --message="Creating a Redis database..." --weight=5

# Configure redis
redis_db=$(ynh_redis_get_free_db)
ynh_app_setting_set --app="$app" --key=redis_db --value="$redis_db"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir=$final_path

# Set permissions to app files
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=4

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# INSTALL ETHERPAD
#=================================================
ynh_script_progression --message="Installing Etherpad..." --weight=60

pushd $final_path
 	ynh_use_nodejs
 	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH src/bin/installDeps.sh
popd

#=================================================
# MODIFY A CONFIG FILE
#=================================================
ynh_script_progression --message="Configuring Etherpad..." --weight=6

cp ../conf/settings.json $final_path/settings.json

ynh_replace_string --match_string="__PORT__" --replace_string="$port" --target_file="$final_path/settings.json"
ynh_replace_string --match_string="__LANGUAGE__" --replace_string="$language" --target_file="$final_path/settings.json"
if [ "$export" = "abiword" ]
then
	# Get AbiWord binary path
	abiword_path=`which abiword`
	# Set the path of AbiWord into Etherpad config
	ynh_replace_string --match_string="\"abiword\" : null" --replace_string="\"abiword\" : \"$abiword_path\"" --target_file="$final_path/settings.json"
elif [ "$export" = "libreoffice" ]
then
	# Get soffice binary path
	soffice_path=`which soffice`
	# Set the path of soffice into Etherpad config
	ynh_replace_string --match_string="\"soffice\" : null" --replace_string="\"soffice\" : \"$soffice_path\"" --target_file="$final_path/settings.json"
fi
ynh_store_file_checksum --file="$final_path/settings.json"

ynh_add_config --template="../conf/credentials.json" --destination="$final_path/credentials.json"

chmod 400 $final_path/credentials.json

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=4

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=3

yunohost service add $app --description="Collaborative editor" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=6

# Start a systemd service
ynh_systemd_action --service_name=$app --action=restart --log_path=systemd --line_match="Your Etherpad version is"

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	ynh_permission_update --permission="main" --add="visitors"
fi

ynh_permission_create --permission="admin" --url="/admin" --allowed="$admin" --auth_header="false"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Installation of Etherpad completed" --last