# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="7"

inherit webapp

MY_BRANCH="stable$(ver_cut 1)$(ver_cut 2)"

DESCRIPTION="The Moodle Course Management System"
HOMEPAGE="https://moodle.org"
SRC_URI="https://download.moodle.org/${MY_BRANCH}/${P}.tgz"
S="${WORKDIR}/${PN}"

LICENSE="GPL-3+"
KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86"
#SLOT empty due to webapp

DB_FLAGS="mysqli?,mssql?,postgres?"
DB_TYPES=${DB_FLAGS//\?/}
DB_TYPES=${DB_TYPES//,/ }

AUTHENTICATION_FLAGS="imap?,ldap?,odbc?"
AUTHENTICATION_MODES=${AUTHENTICATION_FLAGS//\?/}
AUTHENTICATION_MODES=${AUTHENTICATION_MODES//,/ }

PHP_REQUIRED_FLAGS="ctype,curl,iconv,json(+),session,simplexml,xml,zip"
PHP_OPTIONAL_FLAGS="gd,intl,soap,ssl,tokenizer,xmlrpc"
PHP_FLAGS="${PHP_REQUIRED_FLAGS},${PHP_OPTIONAL_FLAGS}"

IUSE="${DB_TYPES} ${AUTHENTICATION_MODES} vhosts"

# No forced dependency on
#  mssql? - lives on a windows server
#  mysql? ( virtual/mysql )
#  postgres? ( dev-db/postgresql-server-9* )
# which may live on another server.  These USE flags affect the configuration
# file and the dependency on php.  However other dbs are possible.  See config.php
# and the moodle documentation for other possibilities.
DEPEND=""
RDEPEND="
	>=dev-lang/php-7.2[${DB_FLAGS},${AUTHENTICATION_FLAGS},${PHP_FLAGS}]
	virtual/httpd-php
	virtual/cron"

pkg_setup() {
	webapp_pkg_setup

	# How many dbs were selected? If one and only one, which one is it?
	MYDB=""
	DB_COUNT=0
	for db in ${DB_TYPES}; do
		if use ${db}; then
			MYDB=${db}
			DB_COUNT=$(($DB_COUNT+1))
		fi
	done

	if [[ ${DB_COUNT} -eq 0 ]]; then
		eerror
		eerror "No database selected in your USE flags,"
		eerror "You must select at least one."
		eerror
		die
	fi

	if [[ ${DB_COUNT} -gt 1 ]]; then
		MYDB=""
		ewarn
		ewarn "Multiple databases selected in your USE flags,"
		ewarn "You will have to choose your database manually."
		ewarn
	fi
}

src_prepare() {
	rm COPYING.txt
	cp "${FILESDIR}"/config-r1.php config.php

	# Moodle expect pgsql, not postgres
	MYDB=${MYDB/postgres/pgsql}

	if [[ ${DB_COUNT} -eq 1 ]] ; then
		sed -i -e "s|mydb|${MYDB}|" config.php
	fi

	eapply_user
}

src_install() {
	webapp_src_preinst

	local MOODLEDATA="${MY_HOSTROOTDIR}"/moodle
	dodir ${MOODLEDATA}
	webapp_serverowned -R "${MOODLEDATA}"

	local MOODLEROOT="${MY_HTDOCSDIR}"
	insinto ${MOODLEROOT}
	doins -r *

	webapp_configfile "${MOODLEROOT}"/config.php

	if [[ ${DB_COUNT} -eq 1 ]]; then
		webapp_postinst_txt en "${FILESDIR}"/postinstall-en.txt
	else
		webapp_postinst_txt en "${FILESDIR}"/postinstall-nodb-en.txt
	fi

	webapp_src_install
}

pkg_postinst() {
	einfo
	einfo
	einfo "To see the post install instructions, do"
	einfo
	einfo "    webapp-config --show-postinst ${PN} ${PVR}"
	einfo
	einfo
}