#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================

ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
master_key=$(ynh_app_setting_get --app=$app --key=master_key)
allow_analyse=$(ynh_app_setting_get --app=$app --key=allow_analyse)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

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


# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

#=================================================
# FIND AND OPEN A PORT
#=================================================

ynh_script_progression --message="Finding an available port.." --weight=2

# Find an available port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up Meilisearch before upgrading (may take a while)..." --weight=5

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# 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"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADING MEILISEARCH
#=================================================
ynh_script_progression --message="upgrading Meilisearch..." --weight=5

arch=$(ynh_detect_arch)

if [ "$arch" != "amd64" ] && [ "$arch" != "armv8" ]
then
    ynh_die --message="Your OS Architecture is not supported"
fi
release_file=meilisearch-linux-$arch
curl -OL https://github.com/meilisearch/MeiliSearch/releases/download/$latest/meilisearch-linux-$arch
chmod +x "$release_file"
mv "$release_file" /usr/bin/meilisearch

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app

#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

ynh_backup_if_checksum_is_different --file="$final_path/CONFIG_FILE"
# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$final_path/CONFIG_FILE"

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=2

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=2

if [ $allow_analyse ]; then
    ynh_replace_string "__ANALYTICS__" "false" "../conf/systemd.service"
else
    ynh_replace_string "__ANALYTICS__" "true" "../conf/systemd.service"
fi
ynh_replace_string "__PORT__" "$port" "../conf/systemd.service"
ynh_replace_string "__API_KEY__" "$master_key" "../conf/systemd.service"

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# UPGRADE FAIL2BAN
#=================================================
#ynh_script_progression --message="Reconfiguring fail2ban..." --weight=1

# Create a dedicated fail2ban config
#ynh_add_fail2ban_config --logpath="/var/log/nginx/${domain}-error.log" --failregex="Regex to match into the log for a failed login"

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chown -R $app:$app $final_path

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================

yunohost service add $app --description="Opensource next generation search API" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=3

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

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Upgrade of Meilisearch completed" --last