#!/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 /usr/share/yunohost/helpers

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================

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

#=================================================
# ADD SWAP IF NEEDED
#=================================================

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

# https://docs.gitlab.com/ce/install/requirements.html#memory
# Need at least 2Go of swap
if [ $total_ram -lt 4096 ]; then
	swap_needed=2048
fi

if [ $swap_needed -gt 0 ]; then
	ynh_script_progression --message="Adding $swap_needed Mo to swap..."
	if ! ynh_add_swap --size=$swap_needed; then
		ynh_print_warn --message="Please add $swap_needed Mo to swap to make GitLab work properly"
	fi
fi

#=================================================
# RESTORE CONF FILES
#=================================================
ynh_script_progression --message="Restoring configuration files of GitLab..." --weight=1

config_path=/etc/$app
chmod 755 $install_dir

ynh_restore_file --origin_path="$config_path/gitlab-secrets.json"
ynh_restore_file --origin_path="$config_path/gitlab.rb"
ynh_restore_file --origin_path="$config_path/gitlab-persistent.rb"

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Reinstalling GitLab..." --weight=50

source $YNH_APP_BASEDIR/scripts/upgrade.d/upgrade.last.sh
ynh_add_config --template="$YNH_APP_BASEDIR/conf/$architecture.src.default" --destination="$YNH_APP_BASEDIR/conf/$architecture.src"

tempdir="$(mktemp -d)"

ynh_setup_source --dest_dir=$tempdir --source_id=$architecture

if ! ynh_exec_warn_less dpkg -i $tempdir/$gitlab_filename ;
then # This command will fail in lxc env
	package_check_action # defined in upgrade.d/upgrade.last.sh
	ynh_exec_warn_less dpkg --configure gitlab-ce
fi

#=================================================
# SPECIFIC RESTORATION
#=================================================
# RESTORE GITLAB DATABASE
#=================================================
ynh_script_progression --message="Restoring GitLab..." --weight=35

ynh_restore_file --origin_path="/var/opt/$app/backups/last_gitlab_backup.tar"

last_backup="last"

gitlab-ctl stop puma
gitlab-ctl stop sidekiq

# Use gitlab-rake to backup
# Doc: https://docs.gitlab.com/ce/raketasks/backup_restore.html#restore-for-omnibus-gitlab-installations
ynh_exec_warn_less gitlab-backup restore force=yes BACKUP=$last_backup

# https://docs.gitlab.com/ce/raketasks/backup_restore.html#container-registry-push-failures-after-restoring-from-a-backup
if ynh_system_user_exists --username="registry" && [ -d "/var/opt/gitlab/gitlab-rails/shared/registry/docker" ]; then
	chown -R registry:registry /var/opt/gitlab/gitlab-rails/shared/registry/docker
fi

#=================================================
# GENERIC FINALIZATION
#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add "gitlab-runsvdir" --log "/var/log/$app/gitlab-rails/application.log" "/var/log/$app/gitlab-rails/api_json.log" "/var/log/$app/gitlab-rails/production.log" "/var/log/$app/gitlab-rails/production_json.log" "/var/log/$app/gitlab-rails/sidekiq.log" "/var/log/$app/puma/puma_stderr.log" "/var/log/$app/puma/current" "/var/log/$app/alertmanager/current" "/var/log/$app/gitaly/current" "/var/log/$app/gitlab-monitor/current" "/var/log/$app/gitlab-shell/gitlab-shell.log" "/var/log/$app/gitlab-workhorse/current" "/var/log/$app/logrotate/current" "/var/log/$app/nginx/current" "/var/log/$app/nginx/access.log" "/var/log/$app/nginx/error.log" "/var/log/$app/nginx/gitlab_access.log" "/var/log/$app/nginx/gitlab_error.log" "/var/log/$app/node-exporter/current" "/var/log/$app/postgres-exporter/current" "/var/log/$app/postgresql/current" "/var/log/$app/prometheus/current" "/var/log/$app/redis/current" "/var/log/$app/redis-exporter/current"

#=================================================
# WAITING GITLAB
#=================================================
ynh_script_progression --message="Waiting for GitLab..." --weight=14

ynh_systemd_action --action=restart --service_name="gitlab-runsvdir" --log_path="/var/log/$app/puma/current" --line_match="Listening on http://127.0.0.1:$port_puma" --timeout=300

#=================================================
# CHECK THE RESTORED DATA
#=================================================

gitlab-rake gitlab:check SANITIZE=true

# Allow ssh for git
usermod -a -G "ssh.app" "git"

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

ynh_systemd_action --action=reload --service_name=nginx

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

ynh_script_progression --message="Restoration completed for GitLab" --last