#!/bin/bash

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

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

upgrade_type="$(ynh_check_app_version_changed)"

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# MIGRATION 5 : Manage old settings
#=================================================

ensure_vars_set

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# Fix issue on package deployement
test -e /etc/monitorix/conf.d/00-debian.conf || touch /etc/monitorix/conf.d/00-debian.conf

# Remove old hook if exist
ynh_secure_remove --file=/usr/share/yunohost/hooks/post_iptable_rules/50-"$app"

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

ynh_systemd_action --service_name="$app" --action=stop --log_path="/var/log/$app/$app.log"

#=================================================
# "REBUILD" THE APP (DEPLOY NEW SOURCES, RERUN NPM BUILD...)
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$upgrade_type" == UPGRADE_APP ]
then
    ynh_script_progression --message="Upgrading source files..." --weight=1

    # Download, check integrity, uncompress and patch the source from manifest.toml
    install_monitorix_package
fi

ynh_systemd_action --service_name="$app" --action=stop --log_path=systemd --timeout=15

#=================================================
# MIGRATION 2
#=================================================

# Migrate log files
if [ ! -d /var/log/"${app}" ]; then
    mkdir -p /var/log/new_"${app}"
    mv -t /var/log/new_"${app}" /var/log/monitorix*
    mv /var/log/new_"${app}" /var/log/"${app}"
fi

# Migrate data directory
if [ -e /var/lib/monitorix/system.rrd ] && [ ! -e "$data_dir"/system.rrd ] ; then
    mv -f -t "$data_dir/" /var/lib/monitorix/*
fi

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression --message="Upgrading configurations related to $app..." --weight=1

ynh_add_jinja_config --template=monitorix.conf --destination=/etc/monitorix/monitorix.conf
ynh_add_jinja_config --template=nginx_status.conf --destination="$nginx_status_conf"
if "$phpfpm_installed"; then
    config_php_fpm
fi
ynh_add_nginx_config
ynh_add_systemd_config

yunohost service add "$app" --description=Monitorix --log=systemd

ynh_script_progression --message="Configuring databases access..."
configure_db

ynh_script_progression --message="Configuring php fpm access if needed..."
if "$phpfpm_installed"; then
    config_php_fpm
fi

configure_hooks
configure_alerts_email

#=================================================
# GENERIC FINALIZATION
#=================================================
ynh_script_progression --message="Protecting directory..."

set_permission

ynh_use_logrotate --logfile="/var/log/$app"

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

ynh_systemd_action --service_name="$app" --action=restart --log_path=systemd --line_match=' - Ok, ready.'
# when we change the value of 'listen [::1]:xxx;' nginx don't reload correctly the config, so force to restart to ensure that the new config are loaded
ynh_systemd_action --service_name=nginx.service --action=restart
save_vars_current_value

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

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