#!/bin/bash
# Bootstraps from an empty cabal to all the necessary haskell packages
# being installed, with the necessary patches to work on Android.
#
# You should install ghc-android first.
#
# Note that the newest version of packages is installed. 
# It attempts to reuse patches for older versions, but 
# new versions of packages often break cross-compilation by adding TH, 
# etc
#
# Future work: Convert to using the method used here:
# https://github.com/kaoskorobase/ghc-ios-cabal-scripts/

set -e

if [ ! -d haskell-patches ]; then
	cd standalone/android
fi

cabalopts="$@"

cabalinstall () {
	echo cabal install "$@" "$cabalopts"
	eval cabal install "$@" "$cabalopts"
}

patched () {
	pkg=$1
	shift 1
	cabal unpack $pkg
	cd $pkg*
	git init
	git config user.name dummy
	git config user.email dummy@example.com
	git add .
	git commit -m "pre-patched state of $pkg"
	for patch in ../../haskell-patches/${pkg}_*; do
		echo trying $patch
		if ! patch -p1 < $patch; then
			echo "failed to apply $patch"
			echo "please resolve this, replace the patch with a new version, and exit the subshell to continue"
			$SHELL
		fi
	done
	cabalinstall "$@"
	rm -rf $pkg*
	cd ..
}

installgitannexdeps () {
	pushd ../..
	echo cabal install --only-dependencies "$@"
	cabal install --only-dependencies "$@"
	popd
}

install_pkgs () {
	rm -rf tmp
	mkdir tmp
	cd tmp

	patched network
	patched unix-time
	patched lifted-base
	patched zlib
	patched process
	patched MissingH
	patched bloomfilter
	patched SafeSemaphore
	patched distributive
	patched comonad
	patched HTTP
	patched MonadCatchIO-transformers
	patched iproute
	patched primitive
	patched socks
	patched entropy
	patched vector
	patched stm-chans
	patched persistent
	patched profunctors
	patched skein
	patched lens
	patched persistent-template
	patched wai-app-static
	patched shakespeare
	patched shakespeare-css
	patched yesod-routes
	patched yesod-core
	patched yesod-persistent
	patched yesod-form
	patched crypto-numbers
	patched yesod-auth
	patched yesod
	patched async
	patched gnuidn
	patched DAV
	patched language-javascript
	patched uuid

	cd ..

	installgitannexdeps -fAndroid -f-Pairing
}

echo
echo
echo native build
echo
cabal update
installgitannexdeps

echo 
echo
echo cross build
echo
PATH=$HOME/.ghc/$(cat abiversion)/bin:$HOME/.ghc/$(cat abiversion)/arm-linux-androideabi/bin:$PATH
cabal update
install_pkgs