#!/bin/bash

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

# Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
source ../settings/scripts/_common.sh
source ../settings/scripts/ynh_add_swap
source /usr/share/yunohost/helpers

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	#### Remove this function if there's nothing to clean before calling the remove script.
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# 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)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$(ynh_sanitize_dbid --db_name=$app)
db_pwd=$(ynh_app_setting_get --app=$app --key=db_pwd)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..." --weight=1

test ! -d $final_path || ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the NGINX configuration..." --weight=1

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..." --weight=1

# Create the dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=1

ynh_restore_file --origin_path="$final_path"

# FIXME: this should be managed by the core in the future
# Here, as a packager, you may have to tweak the ownerhsip/permissions
# such that the appropriate users (e.g. maybe www-data) can access
# files in some cases.
# But FOR THE LOVE OF GOD, do not allow r/x for "others" on the entire folder -
# this will be treated as a security issue.
mkdir -p "$final_path/tmp/pids"
chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# ADD SWAP IF NEEDED
#=================================================
ynh_script_progression --message="Adding swap if needed..."

total_memory=$(ynh_get_ram --total)
swap_needed=0

if [ $total_memory -lt $MEMORY_NEEDED ]; then
	# Need a minimum of 8Go of memory
	swap_needed=$(($MEMORY_NEEDED - $total_memory))
fi

ynh_script_progression --message="Adding $swap_needed Mo to swap..."
ynh_add_swap --size=$swap_needed

#=================================================
# RESTORE THE CRON FILE
#=================================================
# ynh_script_progression --message="Restoring the cron file..."

# ynh_restore_file --origin_path="/etc/cron.d/$app"

#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=1

# Define and install dependencies
ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
ynh_install_ruby --ruby_version=$RUBY_VERSION

#=================================================
# RESTORE THE POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the PostgreSQL database..."

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
ynh_psql_execute_as_root --sql="ALTER USER $db_user CREATEDB;"
ynh_psql_execute_file_as_root --file="./db.sql" --database="$db_name"


#=================================================
# INSTALLING RUBY AND BUNDLER
#=================================================
ynh_script_progression --message="Installing Ruby..."

pushd "$final_path"
	ynh_use_ruby
	ynh_gem install bundler:1.17.3 --no-document
	ynh_exec_as $app echo "gem: --no-ri --no-rdoc" >> "$final_path/.gemrc"
popd


#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..." --weight=1

ynh_restore_file --origin_path="/etc/systemd/system/$app-web.service"
ynh_restore_file --origin_path="/etc/systemd/system/$app-sidekiq.service"

systemctl enable "$app-web" "$app-sidekiq" --quiet

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the logrotate configuration..." --weight=1

ynh_restore_file --origin_path="/etc/logrotate.d/$app"

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add "$app-web" --description="$app web service"
yunohost service add "$app-sidekiq" --description="$app sidekiq service"

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

ynh_systemd_action --service_name=${app}-web --action="start" --log_path=systemd --line_match="listening on"
ynh_systemd_action --service_name=${app}-sidekiq --action="start" --log_path=systemd --line_match="Booted Rails"

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Restoration completed for $app" --last