# Maintainer: Trent Palmer trenttdually at gmail
# Contributor: Victor <victor@xirion.net>
# Contributor: Jan-Tarek Butt <tarek AT ring0 DOT de>
# Contributor: Erik Beran <eberan AT gmail DOT com>
# Contributor: Thor K. H. <thor at roht dot no>
# Contributor: Babken Vardanyan <483ken 4tgma1l
# Contributor: mikezackles
# Contributor: z33ky
# Contributor: stykr
# Contributor: Svenstaro
# Contributor: KaiSforza
# Contributor: Simon Gomizelj <simongmzlj@gmail.com>
# Contributor: Daniel Micay <danielmicay@gmail.com>
# Contributor: shmilee
# Contributor: foobster
# Contributor: archdria
# Contributor: Andy Weidenbaum <archbaum@gmail.com>

#=========================================================================================================#
#                                          Build Options                                                  #
#=========================================================================================================#
_omnisharp="y"
_gocode="y"
_rust="y"
_tern="y"
_java="n"
_docs="n"
_tests="n"
_use_system_clang="ON"
_use_python2="OFF"

_neovim="$NEOVIM_YOUCOMPLETEME"
#=========================================================================================================#
#=========================================================================================================#



#=========================================================================================================#
#                                    Default PKGBUILD Configuration                                       #
#=========================================================================================================#
pkgname=vim-youcompleteme-git
pkgver=r2494.25ebc0b9
pkgver() {
	cd "YouCompleteMe" || exit
	printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
}
pkgrel=1
pkgdesc="A code-completion engine for Vim"
arch=('any')
url='https://github.com/Valloric/YouCompleteMe'
license=('GPL3')
groups=('vim-plugins')
depends=('boost' 'boost-libs' 'ncurses5-compat-libs' 'python' 'python2' 'nodejs' 'vim' 'clang')
makedepends=('cmake' 'git' 'make' 'curl')
install=install
source=(
'git+https://github.com/Valloric/YouCompleteMe.git' #ycm
'git+https://github.com/ross/requests-futures.git'  #ycm
'git+https://github.com/Valloric/ycmd.git'          #ycm
'git+https://github.com/requests/requests.git'  #ycmd
'git+https://github.com/kjd/idna.git'  #ycmd
'git+https://github.com/certifi/python-certifi.git'  #ycmd
'git+https://github.com/chardet/chardet.git'  #ycmd
'git+https://github.com/urllib3/urllib3.git'  #ycmd
'git+https://github.com/defnull/bottle.git'  #ycmd
'git+https://github.com/slezica/python-frozendict.git'    #ycmd
'git+https://github.com/PythonCharmers/python-future.git' #ycmd
'git+https://github.com/davidhalter/jedi.git'             #jedi
'git+https://github.com/davidhalter/parso.git'            #jedi
'git+https://github.com/Pylons/waitress.git'              #ycmd,jediHTTP
'git+https://github.com/micbou/regex.git'  #ycmd
)
sha256sums=('SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP' 'SKIP')
#=========================================================================================================#
#=========================================================================================================#



#=========================================================================================================#
#                                     Applying PKBUILD Build Options                                      #
#=========================================================================================================#

if [[ "$_gocode" == "y" ]]; then
	# ycmd
	source+=('git+https://github.com/mdempsky/gocode.git')
	source+=('git+https://github.com/rogpeppe/godef.git')
	sha256sums+=('SKIP')
	sha256sums+=('SKIP')
	makedepends+=('go')
fi


if [[ "$_omnisharp" == "y" ]]; then
	source+=( 'git+https://github.com/nosami/OmniSharpServer.git'       #ycmd
			 'git+https://github.com/icsharpcode/NRefactory.git'       #OmniSharpServer
			 'git+https://github.com/jbevain/cecil.git'                #OmniSharpServer
			)
	sha256sums+=('SKIP' 'SKIP' 'SKIP')
	depends+=('mono')
	makedepends+=('mono')
fi

if [[ "$_rust" == "y" ]]; then
	# ycmd
	source+=( 'git+https://github.com/jwilm/racerd.git')
	sha256sums+=('SKIP')
	depends+=('rust')
	makedepends+=('cargo')
fi

if [[ "$_tern" == "y" ]]; then
	# ycmd
	makedepends+=('npm')
fi

#=========================================================================================================#
#=========================================================================================================#



#=========================================================================================================#
#                                           Utility Functions                                             #
#=========================================================================================================#

gitprepare() {
	local cd_dir=$1
	local git_prefix=$2
	local c=0
	for val in "$@" ; do
		if [ $c -gt 1 ]; then
			local feed[$c]=$val
		fi
		c=$(( c + 1 ))
	done

	cd "$srcdir/$cd_dir" || exit

	git submodule init
	for gitsubvar in "${feed[@]}" ; do
		git config submodule."$git_prefix$gitsubvar".url "$srcdir/$gitsubvar"
	done

	git submodule update
	unset -v feed
}

#=========================================================================================================#
#=========================================================================================================#



#=========================================================================================================#
#                                     Standard PKGBUILD Functions                                         #
#=========================================================================================================#

prepare() {

	# Add the java completion engine dynamically...
	if [[ "$_java" == "y" ]]; then
		msg2 'Parsing out the JDTLS package version from upstream...'
			local jdtls_package_name="jdt-language-server"
			local jdtls_milestone=`egrep '^JDTLS_MILESTONE' "$srcdir/ycmd/build.py" | sed -e "s/.* = //g" -e "s/'//g"`
			local jdtls_buildstamp=`egrep '^JDTLS_BUILD_STAMP' "$srcdir/ycmd/build.py" | sed -e "s/.* = //g" -e "s/'//g"`

			if [[ "$jdtls_milestone" != "" ]] && [[ "$jdtls_buildstamp" != "" ]]; then
				msg2 'JDTLS package version matched. Downloading...'
				curl -LO http://download.eclipse.org/jdtls/milestones/${jdtls_milestone}/${jdtls_package_name}-${jdtls_milestone}-${jdtls_buildstamp}.tar.gz
				tar xf ${jdtls_package_name}-${jdtls_milestone}-${jdtls_buildstamp}.tar.gz
			else
				error 'Mismatched JDTLS version'
				exit 1
			fi
	fi


	msg2 'Setting up Git submodules...'

	local YouCompleteMe=("requests-futures" "ycmd" "python-future")
	local YouCompleteMeRequestsDeps=("idna" "python-certifi" "chardet" "urllib3" "requests")
	gitprepare "YouCompleteMe" "third_party/" "${YouCompleteMe[@]}"
	gitprepare "YouCompleteMe" "third_party/requests_deps/" "${YouCompleteMeRequestsDeps[@]}"

	local ycmd=("bottle" "regex" "python-frozendict" "python-future" "waitress")

	if [[ "$_omnisharp" == "y" ]]; then
		ycmd+=("OmniSharpServer")
	fi

	if [[ "$_rust" == "y" ]]; then
		ycmd+=("racerd")
	fi

	gitprepare "YouCompleteMe/third_party/ycmd" "third_party/" "${ycmd[@]}"

	local ycmdJediDeps=("jedi" "parso")
	gitprepare "YouCompleteMe/third_party/ycmd" "third_party/jedi_deps" "${ycmdJediDeps[@]}"

	local ycmdRequestsDeps=("python-certifi" "chardet" "idna" "requests" "urllib3")
	gitprepare "YouCompleteMe/third_party/ycmd" "third_party/requests_deps" "${ycmdRequestsDeps[@]}"

	if [[ "$_gocode" == "y" ]]; then
                gitprepare "YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/mdempsky" "" "gocode"
                gitprepare "YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/rogpeppe" "" "godef"
	fi

	if [[ "$_omnisharp" == "y" ]]; then
		local OmniSharpServer=("NRefactory" "cecil")
		gitprepare "YouCompleteMe/third_party/ycmd/third_party/OmniSharpServer" "" "${OmniSharpServer[@]}"
	fi
}


build() {
	msg2 'Purging unneeded files...'
	rm -r "$srcdir/YouCompleteMe/python/ycm/tests"

	msg2 'Building ycmd...' # BuildYcmdLibs()
	mkdir -p "$srcdir/ycmd_build"
	cd "$srcdir/ycmd_build" || exit
	cmake -G "Unix Makefiles" -DUSE_PYTHON2=$_use_python2 -DUSE_SYSTEM_LIBCLANG="$_use_system_clang" . "$srcdir/YouCompleteMe/third_party/ycmd/cpp"
	make ycm_core

	if [[ "$_omnisharp" == "y" ]]; then
		msg2 'Building OmniSharp completer...' # BuildOmniSharp()
		cd "$srcdir/YouCompleteMe/third_party/ycmd/third_party/OmniSharpServer" || exit
		xbuild /property:Configuration=Release
	else
		msg2 'Skipping OmniSharp completer...'
	fi

	if [[ "$_gocode" == "y" ]]; then
		export GOPATH="$GOPATH:$srcdir/YouCompleteMe/third_party/ycmd/third_party/go"
		msg2 'Building Gocode completer...' # BuildGoCode()
		cd "$srcdir/YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/mdempsky/gocode" || exit
		go build
		cd "$srcdir/YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/rogpeppe/godef" || exit
		go build
	else
		msg2 'Skipping Gocode completer...'
	fi

	if [[ "$_rust" == "y" ]]; then
		msg2 'Building Rust completer...' # BuildRacerd()
		cd "$srcdir/YouCompleteMe/third_party/ycmd/third_party/racerd" || exit
		cargo build --release
	else
		msg2 'Skipping Rust completer...'
	fi

	if [[ "$_tern" == "y" ]]; then
		msg2 'Building Tern completer...' # SetUpTern()
		cd "$srcdir/YouCompleteMe/third_party/ycmd/third_party/tern_runtime" || exit
		if [[ "$_use_python2" == "ON" ]]; then
			npm install --production --python=python2
		else
			npm install --production --python=python3
		fi
	else
		msg2 'Skipping Tern completer...'
	fi

	if [[ "$_java" == "y" ]]; then
		# Remove stale java completer data if any
		rm -rf "$srcdir/YouCompleteMe/third_party/ycmd/third_party/eclipse.jdt.ls/target/repository"
		mkdir -p "$srcdir/YouCompleteMe/third_party/ycmd/third_party/eclipse.jdt.ls/target/repository"
		mv "$srcdir"/{config_linux,features,plugins} "$srcdir/YouCompleteMe/third_party/ycmd/third_party/eclipse.jdt.ls/target/repository"
	fi
}


package() {

	local vimfiles_dir=usr/share/vim/vimfiles
	if [[ "$_neovim" == "y" ]]; then
		vimfiles_dir=usr/share/nvim/runtime
	fi

	# mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party"
	mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/requests_deps"
	mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/jedi_deps"
        
	mkdir -p "$pkgdir/$vimfiles_dir/third_party/requests_deps"

	cp -r "$srcdir/YouCompleteMe/"{autoload,doc,plugin,python} \
		"$pkgdir/$vimfiles_dir"
	cp -r "$srcdir/YouCompleteMe/third_party/"{pythonfutures,requests-futures,python-future} \
		"$pkgdir/$vimfiles_dir/third_party"
	cp -r "$srcdir/YouCompleteMe/third_party/requests_deps/"{certifi,chardet,idna,requests,urllib3} \
		"$pkgdir/$vimfiles_dir/third_party/requests_deps"

	cp -r "$srcdir/YouCompleteMe/third_party/ycmd/"{ycmd,ycm_core.so,CORE_VERSION} \
		"$pkgdir/$vimfiles_dir/third_party/ycmd"
	cp -r "$srcdir/YouCompleteMe/third_party/ycmd/third_party/"{bottle,clang,cregex,frozendict,python-future,waitress} \
		"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party"
	cp -r "$srcdir/YouCompleteMe/third_party/ycmd/third_party/requests_deps/"{certifi,chardet,idna,requests,urllib3} \
		"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/requests_deps"
	cp -r "$srcdir/YouCompleteMe/third_party/ycmd/third_party/jedi_deps/"{jedi,parso} \
		"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/jedi_deps"

	if [[ "$_omnisharp" == "y" ]]; then
		mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/OmniSharpServer/OmniSharp/bin/Release"
		cp -r "$srcdir/YouCompleteMe/third_party/ycmd/third_party/OmniSharpServer/OmniSharp/bin/Release" \
			"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/OmniSharpServer/OmniSharp/bin"
	fi

	if [[ "$_gocode" == "y" ]]; then
		mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/go/src/github.com/mdempsky/gocode"
		mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/go/src/github.com/rogpeppe/godef"
		cp "$srcdir/YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/mdempsky/gocode/gocode" \
		"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/go/src/github.com/mdempsky/gocode/gocode"
		cp "$srcdir/YouCompleteMe/third_party/ycmd/third_party/go/src/github.com/rogpeppe/godef/godef" \
		"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/go/src/github.com/rogpeppe/godef/godef"
	fi

	if [[ "$_rust" == "y" ]]; then
		mkdir -p "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/racerd/target/release"
		cp    "$srcdir/YouCompleteMe/third_party/ycmd/third_party/racerd/target/release/racerd" \
			"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/racerd/target/release/racerd"
	fi

	if [[ "$_tern" == "y" ]]; then
		cp -r "$srcdir/YouCompleteMe/third_party/ycmd/third_party/tern_runtime" \
			"$pkgdir/$vimfiles_dir/third_party/ycmd/third_party"
	fi

	if [[ "$_java" == "y" ]]; then
		mv "$srcdir/YouCompleteMe/third_party/ycmd/third_party/eclipse.jdt.ls" "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party"
		# Force the java completion engine to create its workspace at /tmp instead which is writeable by every user
		ln -sf /tmp "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/eclipse.jdt.ls/workspace"
	fi

	# Remove all the unnecessary git repositories
        find "$pkgdir" -name '.git*' -exec rm -fr {} +

	# Remove test files
	if [[ "$_tests" == "n" ]]; then
                find "$pkgdir" -name tests -exec rm -fr {} +
                find "$pkgdir" -name 'test' -exec rm -fr {} +
        fi

	# Remove any file we cannot compile using a specfic python version
	if [[ "$_use_python2" == "ON" ]]; then
		:
	else
		rm -r "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/bottle/plugins/werkzeug/bottle_werkzeug.py"
		rm -r "$pkgdir/$vimfiles_dir/third_party/ycmd/third_party/bottle/plugins/sqlite/bottle_sqlite.py"
	fi

	# Remove unneeded docs
	if [[ "$_docs" == "n" ]]; then
                find "$pkgdir" -name docs -exec rm -fr {} +
                find "$pkgdir/$vimfiles_dir/third_party/" -name doc -exec rm -fr {} +
        fi

	# Finally compile all the python files to bytecode.
        # not sure why this block causes the pkg function to fail unless you add "|| :"
	if [[ "$_use_python2" == "ON" ]]; then
		python2 -m compileall "$pkgdir" || :
	else
		python3 -m compileall "$pkgdir" || :
	fi

}

#=========================================================================================================#
#=========================================================================================================#