# Copyright 2019-2020 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
#
# @ECLASS: icecatconfig-v6.60.eclass
# @MAINTAINER:
# moog621@gmail.com
# @SUPPORTED_EAPIS: 5 6 7
# @BLURB: the new gnuzilla common configuration eclass for FF33 and newer, v6
# @DESCRIPTION:
# This eclass is used in gnuzilla ebuilds (icecat)
# to provide a single common place for the common gnuzilla engine compoments.
#
# The eclass provides all common dependencies as well as common use flags.
#
# Some use flags which may be optional in particular gnuzilla packages can be
# supported through setting eclass variables.
#
# This eclass inherits mozconfig helper functions as defined in mozcoreconf-v3,
# and so ebuilds inheriting this eclass do not need to inherit that.

case ${EAPI} in
	0|1|2|3|4)
		die "EAPI=${EAPI} not supported"
		;;
	5)
		inherit multilib
		;;
esac

inherit flag-o-matic toolchain-funcs mozcoreconf-v6

# @ECLASS-VARIABLE: MOZCONFIG_OPTIONAL_WIFI
# @DESCRIPTION:
# Set this variable before the inherit line, when an ebuild needs to provide
# optional necko-wifi support via IUSE="wifi".  Currently this would include
# ebuilds for firefox, and potentially seamonkey.
#
# Leave the variable UNSET if necko-wifi support should not be available.
# Set the variable to "enabled" if the use flag should be enabled by default.
# Set the variable to any value if the use flag should exist but not be default-enabled.

# @ECLASS-VARIABLE: MOZCONFIG_OPTIONAL_JIT
# @DESCRIPTION:
# Set this variable before the inherit line, when an ebuild needs to provide
# deterministic jit support via IUSE="jit".  The upstream default will be used
# otherwise, which is generally to enable jit unless support for the platform
# is missing.
#
# Set the variable to "enabled" if the use flag should be enabled by default.
# Set the variable to any value if the use flag should exist but not be default-enabled.

# @ECLASS-VARIABLE: MOZCONFIG_OPTIONAL_GTK3
# @DESCRIPTION:
# Set this variable before the inherit line, when an ebuild can provide
# optional gtk3 support via IUSE="force-gtk3".  Currently this would include
# thunderbird and seamonkey in the future, once support is ready for testing.
#
# Leave the variable UNSET if gtk3 support should not be optionally available.
# Set the variable to "enabled" if the use flag should be enabled by default.
# Set the variable to any value if the use flag should exist but not be default-enabled.
# If gtk+:3 is to be the standard toolkit, do not use this and instead use
# MOZCONFIG_OPTIONAL_GTK2ONLY.

# @ECLASS-VARIABLE: MOZCONFIG_OPTIONAL_GTK2ONLY
# @DESCRIPTION:
# Set this variable before the inherit line, when an ebuild can provide
# optional gtk2-only support via IUSE="gtk2".
#
# Note that this option conflicts directly with MOZCONFIG_OPTIONAL_GTK3, both
# variables cannot be set at the same time and this variable will be ignored if
# MOZCONFIG_OPTIONAL_GTK3 is set.
#
# Leave the variable UNSET if gtk2-only support should not be available.
# Set the variable to "enabled" if the use flag should be enabled by default.
# Set the variable to any value if the use flag should exist but not be default-enabled.

# use-flags common among all gnuzilla ebuilds
IUSE="${IUSE} clang dbus debug neon pulseaudio selinux startup-notification
 system-icu system-jpeg system-libevent system-sqlite system-libvpx"

# some notes on deps:
# gtk:2 minimum is technically 2.10 but gio support (enabled by default) needs 2.14
# media-libs/mesa needs to be 10.2 or above due to a bug with flash+vdpau

RDEPEND=">=app-text/hunspell-1.5.4:=
	dev-libs/atk
	dev-libs/expat
	>=x11-libs/cairo-1.10[X]
	>=x11-libs/gtk+-2.18:2
	x11-libs/gdk-pixbuf
	>=x11-libs/pango-1.22.0
	>=media-libs/libpng-1.6.34:0=[apng]
	>=media-libs/mesa-10.2:*
	media-libs/fontconfig
	>=media-libs/freetype-2.4.10
	kernel_linux? ( !pulseaudio? ( media-libs/alsa-lib ) )
	virtual/freedesktop-icon-theme
	dbus? ( >=sys-apps/dbus-0.60
		>=dev-libs/dbus-glib-0.72 )
	startup-notification? ( >=x11-libs/startup-notification-0.8 )
	>=x11-libs/pixman-0.19.2
	>=dev-libs/glib-2.26:2
	>=sys-libs/zlib-1.2.3
	>=virtual/libffi-3.0.10:=
	virtual/ffmpeg
	x11-libs/libX11
	x11-libs/libXcomposite
	x11-libs/libXdamage
	x11-libs/libXext
	x11-libs/libXfixes
	x11-libs/libXrender
	x11-libs/libXt
	system-icu? ( >=dev-libs/icu-59.1:= )
	system-jpeg? ( >=media-libs/libjpeg-turbo-1.2.1 )
	system-libevent? ( >=dev-libs/libevent-2.0:0=[threads] )
	system-sqlite? ( >=dev-db/sqlite-3.23.1:3[secure-delete,debug=] )
	system-libvpx? (
		>=media-libs/libvpx-1.5.0:0=[postproc]
		<media-libs/libvpx-1.8:0=[postproc]
	)
"

if [[ -n ${MOZCONFIG_OPTIONAL_GTK3} ]]; then
	MOZCONFIG_OPTIONAL_GTK2ONLY=
	if [[ ${MOZCONFIG_OPTIONAL_GTK3} = "enabled" ]]; then
		IUSE+=" +force-gtk3"
	else
		IUSE+=" force-gtk3"
	fi
	RDEPEND+=" force-gtk3? ( >=x11-libs/gtk+-3.4.0:3 )"
elif [[ -n ${MOZCONFIG_OPTIONAL_GTK2ONLY} ]]; then
	if [[ ${MOZCONFIG_OPTIONAL_GTK2ONLY} = "enabled" ]]; then
		IUSE+=" +gtk2"
	else
		IUSE+=" gtk2"
	fi
	RDEPEND+=" !gtk2? ( >=x11-libs/gtk+-3.4.0:3 )"
else
	# no gtk3 related dep set by optional use flags, force it
	RDEPEND+="  >=x11-libs/gtk+-3.4.0:3"
fi
if [[ -n ${MOZCONFIG_OPTIONAL_WIFI} ]]; then
	if [[ ${MOZCONFIG_OPTIONAL_WIFI} = "enabled" ]]; then
		IUSE+=" +wifi"
	else
		IUSE+=" wifi"
	fi
	RDEPEND+="
	wifi? (
		kernel_linux? ( >=sys-apps/dbus-0.60
			>=dev-libs/dbus-glib-0.72
			net-misc/networkmanager )
	)"
fi

DEPEND="app-arch/zip
	app-arch/unzip
	>=sys-devel/binutils-2.30
	sys-apps/findutils
	|| (
		(
			sys-devel/clang:9
			!clang? ( sys-devel/llvm:9 )
			clang? (
				=sys-devel/lld-9*
				sys-devel/llvm:9[gold]
			)
		)
		(
			sys-devel/clang:8
			!clang? ( sys-devel/llvm:8 )
			clang? (
				=sys-devel/lld-8*
				sys-devel/llvm:8[gold]
			)
		)
		(
			sys-devel/clang:7
			!clang? ( sys-devel/llvm:7 )
			clang? (
				=sys-devel/lld-7*
				sys-devel/llvm:7[gold]
			)
		)
		(
			sys-devel/clang:6
			!clang? ( sys-devel/llvm:6 )
			clang? (
				=sys-devel/lld-6*
				sys-devel/llvm:6[gold]
			)
		)
	)
	pulseaudio? ( media-sound/pulseaudio )
	elibc_glibc? (
		virtual/rust
	)
	elibc_musl? (
		virtual/rust
	)
	${RDEPEND}"

RDEPEND+="
	pulseaudio? ( || ( media-sound/pulseaudio
		>=media-sound/apulse-0.1.9 ) )
	selinux? ( sec-policy/selinux-mozilla )"

# @FUNCTION: mozconfig_config
# @DESCRIPTION:
# Set common configure options for gnuzilla packages.
# Call this within src_configure() phase, after mozconfig_init
#
# Example:
#
# inherit mozconfig-v6.46
#
# src_configure() {
# 	mozconfig_init
# 	mozconfig_config
#	# ... misc ebuild-unique settings via calls to
#	# ... mozconfig_{annotate,use_with,use_enable}
#	mozconfig_final
# }

mozconfig_config() {
	if use clang && ! tc-is-clang ; then
		# Force clang
		einfo "Enforcing the use of clang due to USE=clang ..."
		CC=${CHOST}-clang
		CXX=${CHOST}-clang++
		strip-unsupported-flags
	elif ! use clang && ! tc-is-gcc ; then
		# Force gcc
		einfo "Enforcing the use of gcc due to USE=-clang ..."
		CC=${CHOST}-gcc
		CXX=${CHOST}-g++
		strip-unsupported-flags
	fi

	# Migrated from mozcoreconf-2
	mozconfig_annotate 'system_libs' \
		--with-system-zlib \
		--with-system-bz2

	# Stylo is horribly broken on arm, renders GUI unusable
	use arm && mozconfig_annotate 'breaks UI on arm' --disable-stylo

	# Must pass release in order to properly select linker
	mozconfig_annotate 'Enable by Gentoo' --enable-release

	# Set correct update channel, bug 677722
	if [[ -n "${MOZ_ESR}" ]] ; then
		mozconfig_annotate 'set update channel to ESR' --enable-update-channel=esr
	fi

	# Avoid auto-magic on linker
	if use clang ; then
		# This is upstream's default
		mozconfig_annotate "forcing ld=lld due to USE=clang" --enable-linker=lld
	elif tc-ld-is-gold ; then
		mozconfig_annotate "linker is set to gold" --enable-linker=gold
	else
		mozconfig_annotate "linker is set to bfd" --enable-linker=bfd
	fi

	# Enable position independent executables
	mozconfig_annotate 'enabled by Gentoo' --enable-pie
	mozconfig_use_enable debug
	mozconfig_use_enable debug tests

	if ! use debug ; then
		mozconfig_annotate 'disabled by Gentoo' --disable-debug-symbols
	else
		mozconfig_annotate 'enabled by Gentoo' --enable-debug-symbols
	fi

	mozconfig_use_enable startup-notification

	if [[ -n ${MOZCONFIG_OPTIONAL_WIFI} ]] ; then
		# wifi pulls in dbus so manage both here
		mozconfig_use_enable wifi necko-wifi
		if use kernel_linux && use wifi && ! use dbus; then
			echo "Enabling dbus support due to wifi request"
			mozconfig_annotate 'dbus required by necko-wifi on linux' --enable-dbus
		else
			mozconfig_use_enable dbus
		fi
	else
		mozconfig_use_enable dbus
		mozconfig_annotate 'disabled' --disable-necko-wifi
	fi

	if [[ -n ${MOZCONFIG_OPTIONAL_JIT} ]]; then
		mozconfig_use_enable jit ion
	fi

	# These are enabled by default in all gnuzilla applications
	mozconfig_annotate '' --with-system-nspr --with-nspr-prefix="${SYSROOT}${EPREFIX}"/usr
	mozconfig_annotate '' --with-system-nss --with-nss-prefix="${SYSROOT}${EPREFIX}"/usr
	mozconfig_annotate '' --x-includes="${SYSROOT}${EPREFIX}"/usr/include --x-libraries="${SYSROOT}${EPREFIX}"/usr/$(get_libdir)
	if use system-libevent; then
		mozconfig_annotate '' --with-system-libevent="${SYSROOT}${EPREFIX}"/usr
	fi
	mozconfig_annotate '' --prefix="${EPREFIX}"/usr
	mozconfig_annotate '' --libdir="${EPREFIX}"/usr/$(get_libdir)
	mozconfig_annotate 'Gentoo default' --enable-system-hunspell
	mozconfig_annotate '' --disable-crashreporter
	mozconfig_annotate 'Gentoo default' --with-system-png
	mozconfig_annotate '' --enable-system-ffi
	mozconfig_annotate '' --disable-gconf
	mozconfig_annotate '' --with-intl-api
	mozconfig_annotate '' --enable-system-pixman

	# skia has no support for big-endian platforms
	if [[ $(tc-endian) == "big" ]]; then
		mozconfig_annotate 'big endian target' --disable-skia
	else
		mozconfig_annotate '' --enable-skia
	fi

	# default toolkit is cairo-gtk3, optional use flags can change this
	local toolkit="cairo-gtk3"
	local toolkit_comment=""
	if [[ -n ${MOZCONFIG_OPTIONAL_GTK3} ]]; then
		if ! use force-gtk3; then
			toolkit="cairo-gtk2"
			toolkit_comment="force-gtk3 use flag"
		fi
	fi
	if [[ -n ${MOZCONFIG_OPTIONAL_GTK2ONLY} ]]; then
		if use gtk2 ; then
			toolkit="cairo-gtk2"
		else
			toolkit_comment="gtk2 use flag"
		fi
	fi
	mozconfig_annotate "${toolkit_comment}" --enable-default-toolkit=${toolkit}

	# Instead of the standard --build= and --host=, gnuzilla uses --host instead
	# of --build, and --target intstead of --host.
	# Note, gnuzilla also has --build but it does not do what you think it does.
	# Set both --target and --host as gnuzilla uses python to guess values otherwise
	mozconfig_annotate '' --target="${CHOST}"
	mozconfig_annotate '' --host="${CBUILD:-${CHOST}}"

	mozconfig_use_enable pulseaudio
	# force the deprecated alsa sound code if pulseaudio is disabled
	if use kernel_linux && ! use pulseaudio ; then
		mozconfig_annotate '-pulseaudio' --enable-alsa
	fi

	mozconfig_use_enable system-sqlite
	mozconfig_use_with system-jpeg
	mozconfig_use_with system-icu
	mozconfig_use_with system-libvpx

	if use clang ; then
		# https://bugzilla.mozilla.org/show_bug.cgi?id=1423822
		mozconfig_annotate 'elf-hack is broken when using Clang' --disable-elf-hack
	fi

	# Modifications to better support ARM, bug 553364
	if use neon ; then
		mozconfig_annotate '' --with-fpu=neon

		if ! tc-is-clang ; then
			# thumb options aren't supported when using clang, bug 666966
			mozconfig_annotate '' --with-thumb=yes
			mozconfig_annotate '' --with-thumb-interwork=no
		fi
	fi
	if [[ ${CHOST} == armv*h* ]] ; then
		mozconfig_annotate '' --with-float-abi=hard
		if ! use system-libvpx ; then
			sed -i -e "s|softfp|hard|" \
				"${S}"/media/libvpx/moz.build
		fi
	fi
}

# @FUNCTION: mozconfig_install_prefs
# @DESCRIPTION:
# Set preferences into the prefs.js file specified as a parameter to
# the function.  This sets both some common prefs to all gnuzilla
# packages, and any prefs that may relate to the use flags administered
# by mozconfig_config().
#
# Call this within src_install() phase, after copying the template
# prefs file (if any) from ${FILESDIR}
#
# Example:
#
# inherit mozconfig-v6.46
#
# src_install() {
# 	cp "${FILESDIR}"/gentoo-default-prefs.js \
#	"${BUILD_OBJ_DIR}/dist/bin/browser/defaults/preferences/all-gentoo.js"  \
#	|| die
#
# 	mozconfig_install_prefs \
#	"${BUILD_OBJ_DIR}/dist/bin/browser/defaults/preferences/all-gentoo.js"
#
#	...
# }

mozconfig_install_prefs() {
	local prefs_file="${1}"

	einfo "Adding prefs from mozconfig to ${prefs_file}"

	# set dictionary path, to use system hunspell
	echo "pref(\"spellchecker.dictionary_path\", \"${EPREFIX}/usr/share/myspell\");" \
		>>"${prefs_file}" || die

	# force cairo as the canvas renderer on platforms without skia support
	if [[ $(tc-endian) == "big" ]] ; then
		echo "sticky_pref(\"gfx.canvas.azure.backends\",\"cairo\");" \
			>>"${prefs_file}" || die
		echo "sticky_pref(\"gfx.content.azure.backends\",\"cairo\");" \
			>>"${prefs_file}" || die
	fi
}