#!/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
is_public=$YNH_APP_ARG_IS_PUBLIC
password=$YNH_APP_ARG_PASSWORD
group_name=$YNH_APP_ARG_GROUP_NAME
group_description=$YNH_APP_ARG_GROUP_DESCRIPTION
architecture=$(ynh_detect_arch)

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/opt/yunohost/$app
test ! -e "$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=4

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=$app --key=group_name --value="$group_name"
ynh_app_setting_set --app=$app --key=group_description --value="$group_description"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=3

# Find an available port
port=$(ynh_find_port --port=8443)
ynh_app_setting_set --app=$app --key=port --value=$port

# Find an available port for TURN
turn_port=$(ynh_find_port --port=1194)
ynh_app_setting_set --app=$app --key=turn_port --value=$turn_port

# Open TURN port
ynh_script_progression --message="Configuring firewall..." --weight=1

ynh_exec_warn_less yunohost firewall allow Both $turn_port

#=================================================
# 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="$final_path" --source_id="$architecture"

#=================================================
# CREATE DATA AND GROUPS FOLDER
#=================================================

# Define app's data directory
data="$final_path/data"
# Create data folder
mkdir -p "$data"

# Define app's groups directory
groups="$final_path/groups"
# Create groups folder
mkdir -p "$groups"

#=================================================
# CREATE A SERVER CERTIFICATE
#=================================================

pushd "$final_path/data"
	ynh_exec_warn_less openssl req -newkey rsa:2048 -nodes -keyout key.pem -x509 -days 365 -out cert.pem \
	-subj "/C=/ST=/L=/O=/OU=/CN=/emailAddress="
    chmod 640 {key.pem,cert.pem}
popd

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=3

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

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

public_ip4="$(curl -s ip.yunohost.org)" || true

ynh_replace_string --match_string="__PUBLIC_IPV4__" --replace_string="$public_ip4" --target_file="../conf/systemd.service"
ynh_replace_string --match_string="__TURN_PORT__" --replace_string="$turn_port" --target_file="../conf/systemd.service"

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# MODIFY A CONFIG FILE
#=================================================

ynh_add_config --template="../conf/passwd" --destination="$final_path/data/passwd"

ynh_add_config --template="../conf/groupname.json" --destination="$final_path/groups/$group_name.json"

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
chown -R $app: $final_path
chmod -R 755 $final_path

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=2

yunohost service add $app --description="Videoconferencing server" --log="/var/log/$app/$app.log" --needs_exposed_ports="$turn_port"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

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

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=2

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

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=2

ynh_systemd_action --service_name=nginx --action=reload

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

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