#!/bin/bash

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

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

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

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

domain=$YNH_APP_ARG_DOMAIN
path_url="/"
is_public=$YNH_APP_ARG_IS_PUBLIC
ssb_admin_id=$YNH_APP_ARG_SSB_ADMIN_ID
password=$YNH_APP_ARG_PASSWORD
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=1

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=$app --key=admin --value=$ssb_admin_id

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

# Find an available port for web interface
port=$(ynh_find_port --port=8899)
ynh_app_setting_set --app=$app --key=port --value=$port

# Find an available port for ssb tunnels
ssbport=$(ynh_find_port --port=8008)
ynh_app_setting_set --app=$app --key=ssbport --value=$ssbport

# Open the ssbport to the public
ynh_script_progression --message="Configuring firewall..."  --weight=1
ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $ssbport

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..."  --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..."  --weight=1

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

#=================================================
# 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"

# permissions
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=1

# add nginx config
ynh_add_nginx_config

#=================================================
# CREATE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a data directory..."  --weight=1

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

mkdir -p $datadir

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

#=================================================
# CREATE FIRST ADMIN USER
#=================================================
ynh_script_progression --message="Creating first ssbroom admin user"  --weight=1
ynh_exec_as $app /usr/bin/expect<<EOF
set force_conservative 0  ;
set timeout -1
spawn sh -c "$final_path/insert-user -repo $datadir $ssb_admin_id"
match_max 100000
expect "*?assword: "
send -- "$password\r"
expect "*?assword: "
send -- "$password\r"
expect eof
EOF

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

# Create a dedicated systemd config
ynh_add_systemd_config

# for yunohost version < 4.2, this is a workaround to replace string variables
ynh_script_progression --message="String replacing systemd service with $datadir"  --weight=1
systemd_file="/etc/systemd/system/$app.service"
ynh_replace_string --match_string=__DATADIR__ --replace_string=$datadir --target_file=$systemd_file
ynh_replace_string --match_string=__PORT__ --replace_string=$port --target_file=$systemd_file
ynh_replace_string --match_string=__DOMAIN__ --replace_string=$domain --target_file=$systemd_file
ynh_replace_string --match_string=__SSBPORT__ --replace_string=$ssbport --target_file=$systemd_file
systemctl daemon-reload

#=================================================
# 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=1

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

#=================================================
# 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=1

# for normal operation of the app, is_public should equal True,
# and all visitors should be able to access the /admin section, with or without SSO
# as go-ssb-room has its own authentication and user-system
# which operates outside of yunohost SSO

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi


#=================================================
# 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 $app completed"  --last