#!/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=$YNH_APP_ARG_DOMAIN
path_url="/"
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD

app=$YNH_APP_INSTANCE_NAME

key_seed=$(ynh_string_random --length=18 | xxd -p | head -n1 | cut -c 1-18)
jwt_secret=$(ynh_string_random --length=9 | xxd -p | head -n1 | cut -c 1-9)
admin_mail="$(ynh_user_get_info --username=$admin --key=mail)"

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

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..."

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=$app --key=key_seed --value=$key_seed
ynh_app_setting_set --app=$app --key=jwt_secret --value=$jwt_secret

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

# Find an available port
client_port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=client_port --value=$client_port
# Open the port
ynh_script_progression --message="Configuring firewall..."
ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $client_port

api_port=$(ynh_find_port --port=$(($client_port + 1)))
ynh_app_setting_set --app=$app --key=api_port --value=$api_port

guacd_port=$(ynh_find_port --port=$(($api_port + 1)))
ynh_app_setting_set --app=$app --key=guacd_port --value=$guacd_port

used_start_port=$(ynh_find_port --port=20000)
ynh_app_setting_set --app=$app --key=used_start_port --value=$used_start_port
used_end_port=$(ynh_find_port --port=30000)
ynh_app_setting_set --app=$app --key=used_end_port --value=$used_end_port
ynh_exec_warn_less yunohost firewall allow TCP $used_start_port:$used_end_port

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

ynh_install_app_dependencies $pkg_dependencies

GUACD_PKG=rport-guacamole_1.4.0_$(lsb_release --id --short | tr '[:upper:]' '[:lower:]')_$(lsb_release --codename --short)_$(uname -m).deb
GUACD_DOWNLOAD=https://bitbucket.org/cloudradar/rport-guacamole/downloads/${GUACD_PKG}
tempdir="$(mktemp -d)"
pushd "$tempdir"
	curl -fLOSs "$GUACD_DOWNLOAD" || (throw_error "Download failed" && return 0)
	DEBIAN_FRONTEND=noninteractive apt-get -y --no-install-recommends install ./"${GUACD_PKG}"
popd
ynh_replace_string --match_string="9445" --replace_string="$guacd_port" --target_file="/etc/default/rport-guacamole"
systemctl restart rport-guacd
ynh_secure_remove --file="$tempdir"

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

# Create a system user
ynh_system_user_create --username=$app --home_dir="$final_path"
usermod -a -G ssl-cert "$app"

#=================================================
# CREATE A MYSQL DATABASE
#=================================================
ynh_script_progression --message="Creating a MySQL database..."

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name

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

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="$final_path/bin" --source_id="$YNH_ARCH"
ynh_setup_source --dest_dir="$final_path/frontend" --source_id="frontend"
ynh_setup_source --dest_dir="$final_path/novnc" --source_id="novnc"

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..."

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================
# POPULATE DATABASE
#=================================================
ynh_script_progression --message="Populating database..."

password_hash=$(htpasswd -nbB password "$password"|cut -d: -f2)
ynh_add_config --template="../conf/mysql.sql" --destination="../conf/populated_mysql.sql"
ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < "../conf/populated_mysql.sql"

#=================================================
# CREATE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a data directory..."

datadir=/home/yunohost.app/$app
ynh_app_setting_set --app=$app --key=datadir --value=$datadir

mkdir -p $datadir

chmod 750 "$datadir"
chmod -R o-rwx "$datadir"
chown -R $app:www-data "$datadir"

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..."

ynh_add_config --template="../conf/rportd.example.conf" --destination="$final_path/rportd.conf"

chmod 400 "$final_path/rportd.conf"
chown $app:$app "$final_path/rportd.conf"

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

# Create a dedicated systemd config
ynh_add_systemd_config

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

mkdir -p /var/log/$app
chown -R $app:$app "/var/log/$app"

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

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

yunohost service add $app --log="/var/log/$app/$app.log" --needs_exposed_ports="$client_port"

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log" --line_match="API Listening on"

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

# Everyone can access the app.
# The "main" permission is automatically created before the install script.
ynh_permission_update --permission="main" --add="visitors"

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

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Installation of $app completed"