#!/hint/bash -euE
# Copyright (C) 2023  Umorpha Systems
# SPDX-License-Identifier: AGPL-3.0-or-later

load_module "$(dirname -- "${BASH_SOURCE[0]}")/base-uwsgi.sh"
load_module "$(dirname -- "${BASH_SOURCE[0]}")/base-nginx.sh"
load_module "$(dirname -- "${BASH_SOURCE[0]}")/base-mariadb.sh"

packages+=(
	uwsgi-plugin-php
)

post_install+=(20:bookstack:post_install)
bookstack:post_install() {
	local arg_mountpoint=$1

	install -Dm644 /dev/stdin "$arg_mountpoint/etc/nginx/sites/bookstack.conf" <<-'EOF'
		# -*- mode: nginx; nginx-indent-level: 4; intent-tabs-mode: nil -*-
		server {
		    server_name bookstack.mothstuff.lol;
		    include /etc/nginx/snippets/listen.conf;

		    root /usr/share/webapps/bookstack/public;
		    index index.php index.html;

		    location / {
		        try_files $uri $uri/ /index.php?$query_string;
		    }

		    location /index.php {
		        uwsgi_cache_key $host$request_uri;
		        uwsgi_cache_valid 5m;

		        include uwsgi_params;
		        uwsgi_modifier1 14; # Standard PHP request
		        uwsgi_pass unix:/run/uwsgi/bookstack.sock;
		    }
		}
	EOF

	install -Dm755 /dev/stdin "$arg_mountpoint/etc/webapps/bookstack/config.env.gen" <<-'EOF'
		#!/usr/bin/env bash
		cat <<CFGEOF
		APP_KEY=$(cat /etc/umorpha-secrets/bookstack-app-key.txt)
		APP_URL=https://bookstack.mothstuff.lol

		DB_HOST=localhost
		DB_DATABASE=bookstack
		DB_USERNAME=bookstack

		MAIL_DRIVER=smtp
		MAIL_HOST=mail.infomaniak.com
		MAIL_PORT=465
		MAIL_ENCRYPTION=tls
		MAIL_USERNAME=$(cat /etc/umorpha-secrets/bookstack-infomaniak-mailaddr.txt)
		MAIL_PASSWORD=$(cat /etc/umorpha-secrets/bookstack-infomaniak-mailpassword.txt)
		MAIL_FROM=$(cat /etc/umorpha-secrets/bookstack-infomaniak-mailaddr.txt)
		MAIL_FROM_NAME="Umorpha BookStack"

		AUTH_METHOD=oidc
		AUTH_AUTO_INITIATE=false
		APP_THEME=umorpha
		OIDC_NAME=Infomaniak
		OIDC_DISPLAY_NAME_CLAIMS=name
		OIDC_CLIENT_ID=$(cat /etc/umorpha-secrets/bookstack-infomaniak-clientid.txt)
		OIDC_CLIENT_SECRET=$(cat /etc/umorpha-secrets/bookstack-infomaniak-clientsecret.txt)
		OIDC_ISSUER=https://login.infomaniak.com
		OIDC_ISSUER_DISCOVER=true
		CFGEOF
	EOF

	# BookStack and Infomaniak disagree about whether the claims implied by the 'profile'
	# scope-value should be in the access token or the ID token (and my reading of the spec is
	# that the correct answer is *neither*; you should use the access token to get those claims
	# from the userinfo endpoint).
	install -Dm644 /dev/stdin "$arg_mountpoint/usr/share/webapps/bookstack/themes/umorpha/functions.php" <<-'EOF'
		<?php

		use BookStack\Facades\Theme;
		use BookStack\Theming\ThemeEvents;
		use League\OAuth2\Client\Token\AccessToken;

		Theme::listen(ThemeEvents::OIDC_ID_TOKEN_PRE_VALIDATE, function(array $idTokenData, array $accessTokenData) {
		    return (new AccessToken($accessTokenData))->getValues();
		});
	EOF

	install -Dm644 /dev/stdin "$arg_mountpoint/etc/systemd/system/bookstack-init.service" <<-'EOF'
		[Unit]
		Description=Initialize BookStack configuration
		Before=uwsgi@bookstack.service
		Requires=mariadb.service
		After=mariadb.service
		ConditionPathExists=/etc/umorpha-secrets/bookstack-app-key.txt
		ConditionPathExists=/etc/umorpha-secrets/bookstack-infomaniak-mailaddr.txt
		ConditionPathExists=/etc/umorpha-secrets/bookstack-infomaniak-mailpassword.txt
		ConditionPathExists=/etc/umorpha-secrets/bookstack-infomaniak-clientid.txt
		ConditionPathExists=/etc/umorpha-secrets/bookstack-infomaniak-clientsecret.txt

		[Service]
		Type=oneshot
		ExecStart=/etc/systemd/system/bookstack-init
	EOF

	local phpset=(
		extension=pdo_mysql.so
		extension=iconv.so
		extension=gd.so
	)

	install -Dm755  /dev/stdin "$arg_mountpoint/etc/systemd/system/bookstack-init" <<-EOF
		#!/bin/sh
		set -x
		sudo -u bookstack sh -c "umask 0077; /etc/webapps/bookstack/config.env.gen >/etc/webapps/bookstack/config.env"
		if ! [ -e /var/lib/mysql/bookstack/db.opt ]; then
		  sudo -u mysql mariadb --execute="CREATE DATABASE bookstack; CREATE USER 'bookstack'@'localhost'; GRANT ALL ON bookstack.* TO 'bookstack'@'localhost'; FLUSH PRIVILEGES;"
		fi
		sudo -u bookstack sh -c "cd /usr/share/webapps/bookstack && php ${phpset[*]/#/-d } ./artisan migrate --no-interaction --force"
	EOF

	mkdir -p -- "$arg_mountpoint/etc/systemd/system/uwsgi@bookstack.service.wants"
	ln -s "../bookstack-init.service" "$arg_mountpoint/etc/systemd/system/uwsgi@bookstack.service.wants"

	install -Dm644 /dev/stdin "$arg_mountpoint/etc/uwsgi/bookstack.ini" <<-EOF
		[uwsgi]
		master = true
		processes = 4

		uid = %n
		gid = http

		plugins = php
		${phpset[*]/#/$'\nphp-set = '}
	EOF

	systemctl --root="$arg_mountpoint" enable uwsgi@bookstack.socket
}