#!/bin/bash

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

#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression "Stopping $app's systemd service..."

ynh_systemctl --service=$app --action="stop"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression "Ensuring downward compatibility..."

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# FIXME: this is still supported but the recommendation is now to *always* re-setup the app sources wether or not the upstream sources changed
if ynh_app_upstream_version_changed
then
	ynh_script_progression "Upgrading source files..."

	# Download, check integrity, uncompress and patch the source from app.src
	# The keep option prevents this warning:
	#   "File .... has been manually modified since the installation or last upgrade."
	ynh_setup_source --dest_dir="$install_dir" --full_replace --keep="config/elasticsearch.yml"
fi

#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod -R o-rwx "$install_dir"
#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown -R $app:$app "$install_dir"
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression "Updating configuration..."

ynh_config_add --template="elasticsearch.yml" --destination="$install_dir/config/elasticsearch.yml"
ynh_config_add --template="jvm.options" --destination="$install_dir/config/jvm.options.d/yunohost.options"

#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod 400 "$install_dir/config/elasticsearch.yml" "$install_dir/config/jvm.options.d/yunohost.options"
#REMOVEME? Assuming the file is setup using ynh_config_add, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown $app:$app "$install_dir/config/elasticsearch.yml" "$install_dir/config/jvm.options.d/yunohost.options"

#=================================================
# INCREASE MAX_MAP_COUNT
#=================================================
ynh_script_progression "Increasing maximum map count (sysctl)..."

# Increase the maximum number of files inotify can monitor.
cp -a ../conf/90-max_map_count-elasticsearch.conf /etc/sysctl.d/
# Then, reload the kernel configuration.
if ! [ "${container:-}" = "lxc" ] # lxc doesn't allow sysctl to play with kernel options.
then
	sysctl -p /etc/sysctl.d/90-max_map_count-elasticsearch.conf
fi

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression "Upgrading systemd configuration..."

# Create a dedicated systemd config
ynh_config_add_systemd

# Use logrotate to manage app-specific logfile(s)
ynh_config_add_logrotate

yunohost service add $app --description="Distributed and RESTful search engine" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression "Starting $app's systemd service..."

ynh_systemctl --service=$app --action="start"

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

ynh_script_progression "Upgrade of $app completed"