# Copyright 1999-2013 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=5

inherit check-reqs eutils games

MY_ARCH="${ARCH/amd64/x86_64}"
MY_NAME=AmnesiaAMFP
MY_REV="-3"

DESCRIPTION="Amnesia: A Machine for Pigs is a first person survival horror. A game about immersion, discovery and living through a nightmare."
HOMEPAGE="http://www.aamfp.com/"
SRC_URI="${MY_NAME}-${PV}${MY_REV}.sh"

RESTRICT="fetch strip"
LICENSE="Frictional_Games-EULA"

SLOT="0"
KEYWORDS="amd64 ~x86"
IUSE="doc linguas_br linguas_cz linguas_de linguas_es linguas_fr linguas_hu linguas_it linguas_pl linguas_ru"

DEPEND="app-arch/unzip"
RDEPEND="media-libs/devil
	media-libs/libsdl2
	media-libs/libogg
	media-libs/libtheora
	media-libs/libvorbis
	media-libs/openal
	sys-libs/zlib
	x11-libs/libX11
	x11-libs/libXau
	x11-libs/libXdmcp
	x11-libs/libXext
	x11-libs/libxcb
	virtual/glu
	virtual/opengl"

CHECKREQS_DISK_BUILD="10G"

S="${WORKDIR}/data"

GAMEDIR="${GAMES_PREFIX_OPT}/${PN}"

pkg_nofetch() {
	einfo ""
	einfo "Please buy and download \"${SRC_URI}\" from:"
	einfo "  ${HOMEPAGE}"
	einfo "and move/link it to \"${DISTDIR}\""
	einfo ""
}

pkg_setup() {
	games_pkg_setup
}

src_unpack() {
	einfo "\nUnpacking files.  This will take several minutes."
	# unzip expected to return error code 1 because of wrapper
	unzip -q "${DISTDIR}/${A}" 2>/dev/null
	[ $? -gt 1 ] && die "unpacking failed"
}

src_prepare() {
	# Remove unneeded files
	cd "${S}/noarch"
	REMOVE="*.pdf uninstall-${MY_NAME}.sh"
	KEEP=

	# Collect info about languages...
	LINGUAS_ARRAY=()		# Linguas - string: E.g.: "linguas_en"
	LANG_ARRAY=()			# Lang - string: E.g.: "en"
	LANGUAGE_ARRAY=()		# Language - string: E.g.: "english"
	LANGUAGE_SHORT_ARRAY=()		# Language Short - string: E.g.: "eng"
	USE_ARRAY=()			# Used - bool (0,1)

	local linguas_in_use="0"
	for use in ${IUSE}; do
		if [[ "${use%%_*}" == "linguas" ]]; then
			local tmp="${use}"
			LINGUAS_ARRAY=(${LINGUAS_ARRAY[@]} "${tmp}")

			tmp="${tmp##linguas_}"
			LANG_ARRAY=(${LANG_ARRAY[@]} "${tmp}")

			case "${tmp}" in
				"br") tmp="brazilian_portuguese";;
				"cz") tmp="czech";;
				"de") tmp="german";;
				"es") tmp="spanish";;
				"fr") tmp="french";;
				"hu") tmp="hungarian";;
				"it") tmp="italian";;
				"pl") tmp="polish";;
				"ru") tmp="russian";;
				*) tmp="";;
			esac
			LANGUAGE_ARRAY=(${LANGUAGE_ARRAY[@]} "${tmp}")
			LANGUAGE_SHORT_ARRAY=(${LANGUAGE_SHORT_ARRAY[@]} "${tmp:0:3}")

			if use ${use}; then
				USE_ARRAY=(${USE_ARRAY[@]} "1")
				linguas_in_use="$(( ${linguas_in_use} + 1 ))"
			else
				USE_ARRAY=(${USE_ARRAY[@]} "0")
			fi
		fi
	done

	# ...then process them.
	local n="0"
	local docs_eng="0"
	while [[ "${n}" -lt "${#LINGUAS_ARRAY[@]}" ]]; do
		if [[ "${USE_ARRAY[${n}]}" -gt "0" ]]; then
			# If only one lang is selected, use it as default.
			if [[ "${linguas_in_use}" == "1" ]]; then
				sed -e "s#english.lang#${LANGUAGE_ARRAY[${n}]}.lang#g" \
				    -i config/*main_init.cfg || die "sed 'config/*main_init.cfg' failed"
			fi
		else
			REMOVE="${REMOVE} $(find config -type f -name "*${LANGUAGE_ARRAY[${n}]}.lang")"
			if [[ -d "lang/${LANGUAGE_SHORT_ARRAY[${n}]}" ]]; then
				REMOVE="${REMOVE} lang/${LANGUAGE_SHORT_ARRAY[${n}]}"
			fi
		fi

		if use doc; then
			if use linguas_${LANG_ARRAY[${n}]} && [ -f "Manual_${LANG_ARRAY[${n}]}.pdf" ]; then
				KEEP="${KEEP} Manual_${LANG_ARRAY[${n}]}.pdf"
			else
				local docs_eng="1"
			fi
		fi

		n="$(( ${n} + 1 ))"
	done

	if use doc && [[ ( "${linguas_in_use}" == "0" || "${docs_eng}" != "0" ) ]]; then
		KEEP="${KEEP} Manual.pdf"
	fi

	einfo "Removing useless files ..."
	for remove in ${REMOVE}; do
		local removable="1"
		for keep in ${KEEP}; do
			if [[ "${remove}" == "${keep}" && "${removable}" == "1" ]]; then
				local removable="0"
			fi
		done

		if [[ "${removable}" == "1" ]]; then
			rm -r "${S}/gamedata/"${remove} &> /dev/null
		fi
	done
}

src_install() {
	# Install data
	insinto "${GAMEDIR}"
	exeinto "${GAMEDIR}"

	# Install and remove icon and documentation
	newicon "noarch/${MY_NAME}.png" "${PN}.png" || die "newicon failed"
	rm "${MY_NAME}.png" 
	if use doc; then
		dodoc noarch/*.pdf || die "dodoc failed"
		rm noarch/*.pdf
	fi

	einfo "Installing game data files ..."
	doins -r noarch/*
	newexe "${MY_ARCH}/${MY_NAME}.bin.${MY_ARCH}" "${MY_NAME}.bin"
	# Launcher seems to crash when loading game (at least on amd64);
	#	and isn't required, so don't install
	#newexe "${MY_ARCH}/Launcher.bin.${MY_ARCH}" "Launcher.bin"

	# Make game wrapper
	local wrapper="${S}/${PN}"

	cat << EOF > "${wrapper}" || die "echo failed"
#!/bin/sh
cd "${GAMEDIR}"

#if [ -w "\${HOME}/.frictionalgames/Amnesia/Pig/main_settings.cfg" ]; then
	exec ./${MY_NAME}.bin "\${@}"
#else
#	exec ./Launcher.bin "\${@}"
#fi
EOF

	# Install wrapper
	dogamesbin "${wrapper}"

	# Install icon and desktop file
	make_desktop_entry "${PN}" "Amnesia: A Machine for Pigs" "/usr/share/pixmaps/${PN}.png"
}

pkg_postinst() {
	prepgamesdirs
}