#!/bin/sh
# File: prep-librewolf-rpm.sh
# Location: https://gitlab.com/bgstack15/librewolf-fedora
# Latest supported version: librewolf-88.0-6.fc33
# Author: bgstack15
# SPDX-License-Identifier: CC-BY-SA-4.0
# Startdate: 2021-04-28
# Title: Build Rpm for LibreWolf
# Purpose: Prepare src.rpm for running "rpmbuild -ra librewolf.src.rpm" for LibreWolf by adapting distro Firefox assets
# History:
# Usage:
#    Can send the output to COPR
#    Reset the local build environment with:
#       rm -rf ../git ../prepared ../88.0
# References:
#    https://gitlab.com/librewolf-community/browser/linux/-/tree/master/scripts
# Improve:
# Dependencies:
#    req-fedora: rpmdevtools, dnf

set -e # fail out on any errors

#####################################
# Load settings
# basically, dot-source the conf file.
test -z "${librewolf_rpm_conf}" && export librewolf_rpm_conf="$( find "$( dirname "${0}" )" -maxdepth 2 -name "$( basename "${0%%.sh}.conf" )" -print 2>/dev/null | head -n1 )"
test ! -r "${librewolf_rpm_conf}" && { echo "Unable to load config file, which should be named the same as this script but with a .conf ending. Aborted." 1>&2 ; exit 1 ; }
. "${librewolf_rpm_conf}"

librewolf_common_url=https://gitlab.com/librewolf-community/browser/common.git
librewolf_settings_url=https://gitlab.com/librewolf-community/settings.git
librewolf_linux_url=https://gitlab.com/librewolf-community/browser/linux.git

case "${DISTRO}" in
   fedora)
      _mozconfig='firefox-mozconfig'
      src_rpm_git_url="https://src.fedoraproject.org/rpms/firefox/"
      src_rpm_git_commit="main"
      ;;
   *)
      echo "Unconfigured DISTRO ${DISTRO}. Where in repo is mozconfig, and what is git url?" 1>&2
      exit 1
   ;;
esac

# user configurable
git_source_dir=${CI_PROJECT_DIR}/git  # where LibreWolf git contents are cached
src_rpm_dir=${CI_PROJECT_DIR}/${firefox_version}/git # where the src git repo is downloaded
work_dir=${CI_PROJECT_DIR}/prepared/

#############################3
# Download initial components
mkdir -p "${work_dir}" ; cd "${work_dir}"
if test -z "${SKIP_DOWNLOAD}" ; then
   mkdir -p "${src_rpm_dir}" ; cd "${src_rpm_dir}"
   git clone "${src_rpm_git_url}" . || :
   test -n "${src_rpm_git_commit}" && {
      git checkout "${src_rpm_git_commit}"
   }
   # Download original firefox source
else : ; fi

# Download git sources
if test -z "${SKIP_GIT}" ; then (
   # yes, use sub-shell for cd. pushd is a bashism.
   mkdir -p "${git_source_dir}" ; cd "${git_source_dir}"
   git clone "${librewolf_common_url}" ${git_source_dir}/common || :
   git clone "${librewolf_settings_url}" ${git_source_dir}/settings || :
   git clone "${librewolf_linux_url}" ${git_source_dir}/linux || :
) ; else : ; fi


#############################3
# Script 1 tasks
# Modify dependencies, and also lw-ize firefox fedora sources
cd "${src_rpm_dir}"
sed -r firefox.spec \
   -e '/^%global mozapp/{s:\/firefox:librewolf:;}' \
   -e '/^Name:/{s:firefox:librewolf:;}' \
   -e '/^%package (x11|wayland)/,/^\s*$/{s/firefox/librewolf/g;s/Firefox/LibreWolf/g;}' \
   -e '/^BuildRequires.*zip$/aBuildRequires: jack-audio-connection-kit-devel' \
   > firefox.spec2

#####################################
# Script 2 tasks

# none. Download happened earlier

#####################################
# Script 3 tasks

# Make new source tarball of branding elements
cd "${git_source_dir}"/common/source_files/browser/branding ; tar -zcf "${src_rpm_dir}"/librewolf-branding.tgz librewolf 

# add new source tarball for the common.git/source_files/browser/branding/librewolf,a nd other script3 tasks
# just change any logic for enable tests to disable them
cd "${src_rpm_dir}"
# MOZ_SMP_FLAGS is inside the %build and only appears once in the spec file, so should be a good place to add LW-specific settings.
sed -r firefox.spec2 \
   -e '/^%description\s*$/iSource100: librewolf-branding.tgz' \
   -e '/__rm.*\.mozconfig/i( cd browser/branding ; tar -zxf ${SOURCE100} . )' \
   -e 's/--enable-tests\>/--disable-tests/g;' \
   -e 's/--enable-debug\>/--disable-debug/g;' \
   -e '/^Version/i%global enable_mozilla_crashreporter 0' \
   -e '/^MOZ_SMP_FLAGS/iecho "ac_add_options --enable-hardening" >> .mozconfig\' \
      -e 'echo "ac_add_options --enable-rust-simd" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-app-name=librewolf" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-app-basename=LibreWolf" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-branding=browser/branding/librewolf" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-branding=browser/branding/librewolf" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-distribution-id=io.gitlab.librewolf-community" >> .mozconfig\' \
      -e 'echo "ac_add_options --with-unsigned-addon-scopes=app,system" >> .mozconfig\' \
      -e 'echo "ac_add_options --enable-alsa" >> .mozconfig\' \
      -e 'echo "ac_add_options --enable-jack" >> .mozconfig\' \
      -e 'echo "export MOZ_REQUIRE_SIGNING=0" >> .mozconfig\' \
      -e 'echo "ac_add_options --disable-updater" >> .mozconfig\' \
      -e 'echo "export MOZ_CRASHREPORTER=0" >> .mozconfig\' \
      -e 'echo "export MOZ_DATA_REPORTING=0" >> .mozconfig\' \
      -e 'echo "export MOZ_SERVICES_HEALTHREPORT=0" >> .mozconfig\' \
      -e 'echo "export MOZ_TELEMETRY_REPORTING=0" >> .mozconfig' \
      -e '/%global run_firefox_tests [0-9]/s/_tests.*$/_tests 0/;' \
   > firefox.spec3

# script 3 notes: fedora firefox already includes some important options:
#    enable-release
#    allow-addon-sideload
#
# Unfortunately aarch64 is outside of my scope.

# still in script 3, add the relevant patches to the spec
cp -pf "${git_source_dir}"/linux/megabar.patch "${git_source_dir}"/linux/remove_addons.patch "${git_source_dir}"/linux/mozilla-vpn-ad.patch "${git_source_dir}"/linux/context-menu.patch "${git_source_dir}"/linux/deb_patches/*.patch "${src_rpm_dir}"
# "cd browser/branding" was added in the previous sed command
sed -r firefox.spec3 \
   -e '/^%description\s*$/iPatch900: armhf-reduce-linker-memory-use.patch\' \
      -e 'Patch901: fix-armhf-webrtc-build.patch\' \
      -e 'Patch902: webrtc-fix-compiler-flags-for-armhf.patch\' \
      -e 'Patch903: sandbox-update-arm-syscall-numbers.patch\' \
      -e 'Patch904: remove_addons.patch\' \
      -e 'Patch905: megabar.patch\' \
      -e 'Patch906: reduce-rust-debuginfo.patch\' \
      -e 'Patch907: mozilla-vpn-ad.patch\' \
      -e 'Patch908: context-menu.patch' \
   -e '/ cd browser\/branding/i%patch900 -p1\' \
      -e '%patch901 -p1\' \
      -e '%patch902 -p1\' \
      -e '%patch903 -p1\' \
      -e '%patch904 -p1\' \
      -e '%patch905 -p1\' \
      -e '%patch906 -p1\' \
      -e '%patch907 -p1\' \
      -e '%patch908 -p1\' \
   -e "sed -i '/\"pocket\"/d' browser/components/moz.build\\" \
   -e 'sed -i "/SaveToPocket\.init/d" browser/components/BrowserGlue.jsm\' \
   -e "sed -i -r -e '/organizationalUnit.{0,5}=.{0,5}Mozilla/{N;N;N;d}' toolkit/mozapps/extensions/internal/XPIInstall.jsm\\" \
   -e "sed -i -r -e '/enterprise_only/s#true#false#g;' browser/components/enterprisepolicies/schemas/policies-schema.json\\" \
   -e "_settings_services_sed='s#firefox.settings.services.mozilla.com#f.s.s.m.c.qjz9zk#g'\\" \
   -e 'sed -e "${_settings_services_sed}" -i browser/components/newtab/data/content/activity-stream.bundle.js\' \
   -e 'sed -e "${_settings_services_sed}" -i modules/libpref/init/all.js\' \
   -e 'sed -e "${_settings_services_sed}" -i services/settings/Utils.jsm\' \
   -e 'sed -e "${_settings_services_sed}" -i toolkit/components/search/SearchUtils.jsm\' \
   > firefox.spec4
# unity-menubar is not a feature expected in Fedora at all, so ignore it.

###################################
# Script 4 tasks
# "cd browser/branding" was added in the previous sed command
sed firefox.spec4 \
   -e '/ cd browser\/branding/iexport MOZ_NOSPAM=1' \
   > firefox.spec5

# but the build itself will happen of course in the build environment and not here.

###################################
# Additional steps for rpm implementation
cd "${src_rpm_dir}"
mv -f firefox.spec4 librewolf.spec
sed -i -r librewolf.spec \
   -e '/%changelog\s*$/a* '"$( date "+%a %b %d %Y" ) B. Stack <bgstack15@gmail.com> - ${firefox_version}-${distro_firefox_release}"'\' \
   -e '- Fork to librewolf release.\' -e ''

# upstream fedora firefox src.rpm lists some sources which are only used inside if-endif blocks
# Also, fix %files list, and make langpacks disabled by default
sed -i -r librewolf.spec \
   -e '/^Source[0-9]+:.*mochitest-python\.tar/{i%if 0' -e 'a%endif' -e '}' \
   -e '/^%files -f/,/^%change/{' -e '/_bindir|mozappdir|\/icons/{/browser/!{s/firefox/librewolf/g;}}}' \
   -e '/%bcond_with(out)? langpacks/s/_without/_with/;'

if test -z "${SKIP_SRC_RPM}" ; then
   if test -f "firefox-${firefox_version}.source.tar.xz" || test -z "${SKIP_SPECTOOL}" ; then
      spectool -g librewolf.spec --source 0 # from rpmdevtools
   fi
   # Upstream fedora firefox does not include some tarballs for some weird reason, so let's pull them from Fedora src.rpm and rip them out
   # Unfortunately the version available may not be identical to what is in src.fedoraproject.org
   cd "${work_dir}" ; dnf download --source firefox
   this_srcrpm="$( find . -iname 'firefox-*.src.rpm' -printf '%f\n' | sort | tail -n1 )"
   # find the tarballs closest to these expressions: cbindgen-vendor
   cd "${src_rpm_dir}" ; rpm2cpio "${work_dir}/${this_srcrpm}" | cpio -idm $( spectool -l --sources "${src_rpm_dir}/librewolf.spec" | awk '$NF ~/z$/ && $NF ~ /cbindgen/{print $NF}' )
   # I only know how to get rpmbuild to pull sources from ~/rpmbuild/SOURCES
   mkdir -p ~/rpmbuild/SOURCES
   cd "${src_rpm_dir}" ; cp -pf * ~/rpmbuild/SOURCES ;
   rpmbuild -bs librewolf.spec # creates the librewolf src.rpm in ~/rpmbuild/SRPMS/
   cp -p ~/rpmbuild/SRPMS/librewolf-${firefox_version}-${distro_firefox_version}*.src.rpm "${work_dir}"
fi