#!/bin/bash

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

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

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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

export app=$YNH_APP_INSTANCE_NAME
# Retrieve arguments
ynh_export repository passphrase on_calendar conf data apps mailalert

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
server=""
if [[ $repository == *"@"* ]]; then
    server=$(echo "$repository" | cut -d"@" -f2 | cut -d"/" -f1)
    if [[ $server == *":"* ]]; then
        server="[$(echo "$server" | cut -d":" -f1)]:$(echo "$server" | cut -d":" -f2)"
    fi
    ssh_user=$(echo "$repository" | cut -d"@" -f1 | cut -d"/" -f2)
fi
state="repository uncreated"
last_run="-"
ynh_save_args repository server passphrase on_calendar conf data apps mailalert state last_run

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

ynh_install_app_dependencies $pkg_dependencies
install_borg_with_pip

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

# Create a system user
ynh_system_user_create --username=$app

#=================================================
# SPECIFIC SETUP
#=================================================
# ACTIVATE BACKUP METHODS
#=================================================

mkdir -p /etc/yunohost/hooks.d/backup
mkdir -p /etc/yunohost/hooks.d/backup_method
mkdir -p /usr/share/yunohost/backup_method
mkdir -p /var/log/${app}
chown -R $app:$app /var/log/${app}
chmod u+w /var/log/${app}

#=================================================
# SETUP THE BACKUP METHOD
#=================================================
ynh_add_config --template="backup_method" --destination="/etc/yunohost/hooks.d/backup_method/05-${app}_app"
chmod go=--- "/etc/yunohost/hooks.d/backup_method/05-${app}_app"


ynh_add_config --template="backup-with-borg" --destination="/usr/local/bin/backup-with-$app"
chmod u+x "/usr/local/bin/backup-with-$app"
chown $app:$app "/usr/local/bin/backup-with-$app"

ynh_add_config --template="sudoer" --destination="/etc/sudoers.d/$app"
chown root:root "/etc/sudoers.d/$app"

if [ ! -z "$server" ]; then
    #=================================================
    # GENERATE SSH KEY
    #=================================================

    private_key="/root/.ssh/id_${app}_ed25519"
    test -f $private_key || ssh-keygen -q -t ed25519 -N "" -f $private_key

    #=================================================
    # Display key
    #=================================================

    echo "You should now install the \"Borg Server\" app on $server and with the following credentials:
    User: ${ssh_user}
    Public key: $(cat ${private_key}.pub)"

    #=================================================
    # SEND A README FOR THE ADMIN
    #=================================================

    message="You should now install the \"Borg Server\" app on $server and with the following credentials:
User: ${ssh_user}
Public key: $(cat ${private_key}.pub)

Or if you want to use cli:

yunohost app install https://github.com/YunoHost-Apps/borgserver_ynh -a \"ssh_user=${ssh_user}&public_key=$(cat ${private_key}.pub)\"

If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/borg_ynh"

    ynh_send_readme_to_admin "$message"
fi

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

# Create a dedicated systemd config
ynh_add_systemd_config
# Disable the service, this is to prevent the service from being triggered at boot time
systemctl disable $app.service --quiet

#=================================================
# CONFIGURE SYSTEMD TIMER
#=================================================
ynh_add_config --template="systemd.timer" --destination="/etc/systemd/system/$app.timer"
systemctl enable $app.timer --quiet
systemctl start $app.timer

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

# Inactive services are ignored cause it's a timer
yunohost service add $app --description="Deduplicating backup program" --test_status="systemctl show $app.service  -p ActiveState --value | grep -v failed"


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

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