#!/bin/bash

#=================================================
# GENERIC START
#=================================================

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

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

redis_db=$(ynh_app_setting_get --app=$app --key=redis_db)

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

#=================================================
# 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"

#=================================================
# UPGRADE DEPENDENCIES
#=================================================

ynh_script_progression --message="Upgrading dependencies..." --weight=1

ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

#=================================================
# "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
	ynh_setup_source --dest_dir="$install_dir"
fi

# $install_dir will automatically be initialized with some decent
# permissions by default ... however, you may need to recursively reapply
# ownership to all files such as after the ynh_setup_source step
chown -R $app:www-data "$install_dir"

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
  pushd "$install_dir"
    ynh_use_nodejs
    ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install --pure-lockfile
    ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install:python
    ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH:$install_dir/node_modules/.bin yarn run build:prod
    ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn cache clean
  popd

  pushd "$install_dir/sandbox/pyodide"
    ynh_exec_warn_less ynh_exec_as $app make setup
  popd
fi

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

# This should be a literal copypaste of what happened in the install's "System configuration" section

ynh_add_nginx_config

ynh_add_systemd_config

yunohost service add $app --description="Modern relational spreadsheet" --log="/var/log/$app/$app.log"

ynh_use_logrotate --non-append

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

### Same as during install
###
### The file will automatically be backed-up if it's found to be manually modified (because
### ynh_add_config keeps track of the file's checksum)

ynh_add_config --template="default.env" --destination="$install_dir/default.env"

# FIXME: this should be handled by the core in the future
# You may need to use chmod 600 instead of 400,
# for example if the app is expected to be able to modify its own config
chmod 400 "$install_dir/default.env"
chown $app:$app "$install_dir/default.env"

### For more complex cases where you want to replace stuff using regexes,
### you shoud rely on ynh_replace_string (which is basically a wrapper for sed)
### When doing so, you also need to manually call ynh_store_file_checksum
###
### ynh_replace_string --match_string="match_string" --replace_string="replace_string" --target_file="$install_dir/some_config_file"
### ynh_store_file_checksum --file="$install_dir/some_config_file"

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

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

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

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