#!/bin/bash

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

source _common.sh
source /usr/share/yunohost/helpers
upgrade_type=$(ynh_check_app_version_changed)

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

if [ -e "$install_dir/searx" ]; then
	tempdir="$(mktemp -d)"
	mv "$install_dir/searx/settings.yml" "$tempdir/settings.yml"
	sed -i '1s/^/use_default_settings: true\n\n/' "$tempdir/settings.yml"
	ynh_secure_remove --file="$install_dir"
	mkdir "$install_dir"
	mv "$tempdir/settings.yml" "$install_dir/settings.yml"
	ynh_secure_remove --file="$tempdir"
	ynh_store_file_checksum --file="$install_dir/settings.yml"
	ynh_delete_file_checksum --file="/opt/yunohost/$app/searx/settings.yml"
fi

ynh_delete_file_checksum --file="etc/nginx_conf.d/$domain/$app.conf"
	
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

ynh_systemd_action --service_name="uwsgi-app@$app.service" --action="stop" --log_path="/var/log/uwsgi/$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
	
	ynh_secure_remove --file="$install_dir/searxng-src"
	repo_fullpath=$(ynh_read_manifest --manifest_key="upstream.code")
	commit_sha=$(ynh_read_manifest --manifest_key="resources.sources.main.url" | xargs basename --suffix=".tar.gz")
	ynh_exec_fully_quiet git clone -n "$repo_fullpath" "$install_dir/searxng-src"
	pushd "$install_dir/searxng-src"
		ynh_exec_fully_quiet git checkout "$commit_sha"
	popd
	
	ynh_secure_remove --file="$install_dir/searxng-pyenv"
	python3 -m venv --system-site-packages "$install_dir/searxng-pyenv"
	set +o nounset; source "$install_dir/searxng-pyenv/bin/activate"; set -o nounset
	pip3 install -U pip setuptools wheel pyyaml --no-cache-dir
	ynh_exec_fully_quiet pip3 install -e "$install_dir/searxng-src"
fi

chmod 750 "$install_dir"
chmod -R o-rwx "$install_dir"
chown -R $app: "$install_dir"

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

ynh_add_nginx_config

#=================================================
# RECONFIGURE THE APP (UPDATE CONF, APPLY MIGRATIONS...)
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=1

ynh_add_uwsgi_service

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1
                                                     
ynh_systemd_action --service_name="uwsgi-app@$app.service" --action="start" --line_match="spawned uWSGI master process" --log_path="/var/log/uwsgi/$app/$app.log"

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

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