#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source ynh_send_readme_to_admin__2
source /usr/share/yunohost/helpers

#=================================================
# RETRIEVE ARGUMENTS
#=================================================

old_domain=$YNH_APP_OLD_DOMAIN
old_path=$YNH_APP_OLD_PATH

new_domain=$YNH_APP_NEW_DOMAIN
new_path=$YNH_APP_NEW_PATH

app=$YNH_APP_INSTANCE_NAME

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

# Needed for helper "ynh_add_nginx_config"
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
final_path_www=$(ynh_app_setting_get --app=$app --key=final_path_www)
final_path_extensions=$(ynh_app_setting_get --app=$app --key=final_path_extensions)
port_syncing_server_js=$(ynh_app_setting_get --app=$app --key=port_syncing_server_js)
port_syncing_server_js_worker=$(ynh_app_setting_get --app=$app --key=port_syncing_server_js_worker)
port_auth=$(ynh_app_setting_get --app=$app --key=port_auth)
port_auth_worker=$(ynh_app_setting_get --app=$app --key=port_auth_worker)
port_api_gateway=$(ynh_app_setting_get --app=$app --key=port_api_gateway)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before changing its url (may take a while)..." --weight=33

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
    # Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
    ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"

    # restore it if the upgrade fails
    ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK WHICH PARTS SHOULD BE CHANGED
#=================================================

change_domain=0
if [ "$old_domain" != "$new_domain" ]
then
    change_domain=1
fi

change_path=0
if [ "$old_path" != "$new_path" ]
then
    change_path=1
fi

#=================================================
# STANDARD MODIFICATIONS
#=================================================
#=================================================
# MODIFY URL IN NGINX CONF
#=================================================
ynh_script_progression --message="Updating nginx web server configuration..." --weight=2

nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf

# Change the path in the nginx config file
if [ $change_path -eq 1 ]
then
    # Make a backup of the original nginx config file if modified
    ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
    # Set global variables for nginx helper
    domain="$old_domain"
    path_url="$new_path"
    # Create a dedicated nginx config
    ynh_add_nginx_config
fi

# Change the domain for nginx
if [ $change_domain -eq 1 ]
then
    # Delete file checksum for the old conf file location
    ynh_delete_file_checksum --file="$nginx_conf_path"
    mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
    # Store file checksum for the new config file location
    ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
fi

#=================================================
# SPECIFIC MODIFICATIONS
#=================================================
#=================================================
# Modify Standard Notes - Extensions
#=================================================
ynh_script_progression --message="Modify Standard Notes - Extensions..."  --weight=1

if [ $new_path = "/" ]
then
    path=""
else
    path=$new_path
fi

ynh_replace_string \
    --match_string='url": "https://.*/extensions/src/' \
    --replace_string='url": "https://'$domain$path'/extensions/src/' \
    --target_file="$final_path_extensions/repo.json"

find "$final_path_extensions/src/" -name "*.json" -print0 | while read -d $'\0' file
do
    ynh_replace_string \
        --match_string='url": "https://.*/extensions/src/' \
        --replace_string='url": "https://'$domain$path'extensions/src/' \
        --target_file="$file"
done

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring fail2ban..." --weight=1

domain=$new_domain
path_url=$new_path
# Create a dedicated fail2ban config
touch "/var/log/$app/$app.log"
ynh_add_fail2ban_config --use_template

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND A README FOR THE ADMIN
#=================================================
ynh_script_progression --message="Sending a readme for the admin..."

admin_panel="https://$(grep portal_domain /etc/ssowat/conf.json | cut -d'"' -f4)/yunohost/admin/#/apps/$app"

echo -e "\
Standard Notes - Syncing Server's url was successfully changed.\n\
Please configure the Standard Notes web app or mobile app to use this syncing server: https://$domain$path_url\n\
\n\
You changed the url of the server. All Extensions have to be reinstalled by the users. Or you can change the url back.\
" > message

ynh_send_readme_to_admin --app_message="message" --type='change_url'

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

ynh_script_progression --message="Change of URL completed for $app" --last