#!/bin/bash

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

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

#=================================================
# INSTALL DEX FOR OIDC
#=================================================
ynh_script_progression --message="Installing Dex..." --weight=1

oidc_secret="$(echo $(ynh_string_random --length=32 --filter='A-F0-9'))"
oidc_name="$app"
oidc_callback="$domain/oidc/callback"

if yunohost app list | grep -q "$YNH_APP_ARG_DEX_DOMAIN$YNH_APP_ARG_DEX_PATH"; then
	ynh_die "The domain and path provided for Dex is already used by another app. Please chose another one !"
fi

yunohost app install https://github.com/YunoHost-Apps/dex_ynh --force --args "domain=$dex_domain&path=$dex_path&OIDC_name=$oidc_name&OIDC_secret=$oidc_secret&OIDC_callback=$oidc_callback" 2>&1 | tee dexlog.txt
dex_app=$(gawk 'match($0, /Installation of (.+) completed/, app) {print app[1]}' dexlog.txt)
rm dexlog.txt

# Create Dex URIs
if [ $dex_path = "/" ]
then
	dex_auth_uri="https://$dex_domain/auth"
	dex_token_uri="https://$dex_domain/token"
	dex_user_uri="https://$dex_domain/userinfo"
else
	dex_auth_uri="https://$dex_domain$dex_path/auth"
	dex_token_uri="https://$dex_domain$dex_path/token"
	dex_user_uri="https://$dex_domain$dex_path/userinfo"
fi

# Store Dex settings
ynh_app_setting_set --app=$app --key=oidc_secret   --value=$oidc_secret
ynh_app_setting_set --app=$app --key=oidc_name     --value=$oidc_name
ynh_app_setting_set --app=$app --key=oidc_callback --value=$oidc_callback
ynh_app_setting_set --app=$app --key=dex_app       --value=$dex_app

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

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$install_dir"

chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"
chown -R $app:$app "$install_dir"
chmod -R ug+x "$install_dir/headscale"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

ynh_add_config --template="config.yaml" --destination="$install_dir/config.yaml"

chmod 600 "$install_dir/config.yaml"
chown $app:$app "$install_dir/config.yaml"

# Add dnsmasq configuration to avoid overriding resolvconf
ynh_add_config --template="dnsmasq" --destination="/etc/dnsmasq.d/$app"
ynh_systemd_action --service_name="dnsmasq" --action="reload"

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

# 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=1

yunohost service add $app --description="Control server for the WireGuard-based VPN" --log="/var/log/$app/$app.log"

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

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

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