#!/bin/sh
#
# Copyright (c) 2019 Stefan Sperling <stsp@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

. ./common.sh

function test_stage_basic {
	local testroot=`test_init stage_basic`

	got checkout $testroot/repo $testroot/wt > /dev/null
	ret="$?"
	if [ "$ret" != "0" ]; then
		test_done "$testroot" "$ret"
		return 1
	fi

	echo "modified file" > $testroot/wt/alpha
	(cd $testroot/wt && got rm beta > /dev/null)
	echo "new file" > $testroot/wt/foo
	(cd $testroot/wt && got add foo > /dev/null)

	echo ' M alpha' > $testroot/stdout.expected
	echo ' D beta' >> $testroot/stdout.expected
	echo ' A foo' >> $testroot/stdout.expected
	(cd $testroot/wt && got stage alpha beta foo > $testroot/stdout)

	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
	fi
	test_done "$testroot" "$ret"
}

function test_stage_status {
	local testroot=`test_init stage_status`

	got checkout $testroot/repo $testroot/wt > /dev/null
	ret="$?"
	if [ "$ret" != "0" ]; then
		test_done "$testroot" "$ret"
		return 1
	fi

	echo "modified file" > $testroot/wt/alpha
	(cd $testroot/wt && got rm beta > /dev/null)
	echo "new file" > $testroot/wt/foo
	(cd $testroot/wt && got add foo > /dev/null)
	echo "new file" > $testroot/wt/epsilon/new
	(cd $testroot/wt && got add epsilon/new > /dev/null)
	echo "modified file" > $testroot/wt/epsilon/zeta
	(cd $testroot/wt && got rm gamma/delta > /dev/null)

	echo ' M alpha' > $testroot/stdout.expected
	echo ' D beta' >> $testroot/stdout.expected
	echo 'A  epsilon/new' >> $testroot/stdout.expected
	echo 'M  epsilon/zeta' >> $testroot/stdout.expected
	echo ' A foo' >> $testroot/stdout.expected
	echo 'D  gamma/delta' >> $testroot/stdout.expected
	(cd $testroot/wt && got stage alpha beta foo > /dev/null)

	(cd $testroot/wt && got status > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
		test_done "$testroot" "$ret"
		return 1
	fi

	echo "modified file again" >> $testroot/wt/alpha
	echo "modified added file again" >> $testroot/wt/foo

	echo 'MM alpha' > $testroot/stdout.expected
	echo ' D beta' >> $testroot/stdout.expected
	echo 'A  epsilon/new' >> $testroot/stdout.expected
	echo 'M  epsilon/zeta' >> $testroot/stdout.expected
	echo 'MA foo' >> $testroot/stdout.expected
	echo 'D  gamma/delta' >> $testroot/stdout.expected

	(cd $testroot/wt && got status > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
		test_done "$testroot" "$ret"
		return 1
	fi

	# test no-op change of added file with new stat(2) timestamp
	echo "new file" > $testroot/wt/foo
	echo ' A foo' > $testroot/stdout.expected
	(cd $testroot/wt && got status foo > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
		test_done "$testroot" "$ret"
		return 1
	fi

	# test staged deleted file which is restored on disk
	echo "new file" > $testroot/wt/beta
	echo ' D beta' > $testroot/stdout.expected
	(cd $testroot/wt && got status beta > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
	fi
	test_done "$testroot" "$ret"

}

function test_stage_add_already_staged_file {
	local testroot=`test_init stage_add_already_staged_file`

	got checkout $testroot/repo $testroot/wt > /dev/null
	ret="$?"
	if [ "$ret" != "0" ]; then
		test_done "$testroot" "$ret"
		return 1
	fi

	echo "modified file" > $testroot/wt/alpha
	(cd $testroot/wt && got rm beta > /dev/null)
	echo "new file" > $testroot/wt/foo
	(cd $testroot/wt && got add foo > /dev/null)

	(cd $testroot/wt && got stage alpha beta foo > $testroot/stdout)

	(cd $testroot/wt && got add beta \
		> $testroot/stdout 2> $testroot/stderr)
	ret="$?"
	if [ "$ret" == "0" ]; then
		echo "got add command succeeded unexpectedly" >&2
		test_done "$testroot" "1"
		return 1
	fi
	echo "got: realpath: beta: No such file or directory" \
		> $testroot/stderr.expected
	cmp -s $testroot/stderr.expected $testroot/stderr
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stderr.expected $testroot/stderr
		test_done "$testroot" "$ret"
		return 1
	fi

	echo -n > $testroot/stdout.expected
	for f in alpha foo; do
		(cd $testroot/wt && got add $f \
			> $testroot/stdout 2> $testroot/stderr)
		ret="$?"
		if [ "$ret" != "0" ]; then
			echo "got add command failed unexpectedly" >&2
			test_done "$testroot" "1"
			return 1
		fi
		cmp -s $testroot/stdout.expected $testroot/stdout
		ret="$?"
		if [ "$ret" != "0" ]; then
			diff -u $testroot/stdout.expected $testroot/stdout
			test_done "$testroot" "$ret"
			return 1
		fi
	done

	echo ' M alpha' > $testroot/stdout.expected
	echo ' D beta' >> $testroot/stdout.expected
	echo ' A foo' >> $testroot/stdout.expected

	(cd $testroot/wt && got status > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
	fi
	test_done "$testroot" "$ret"
}

function test_stage_rm_already_staged_file {
	local testroot=`test_init stage_rm_already_staged_file`

	got checkout $testroot/repo $testroot/wt > /dev/null
	ret="$?"
	if [ "$ret" != "0" ]; then
		test_done "$testroot" "$ret"
		return 1
	fi

	echo "modified file" > $testroot/wt/alpha
	(cd $testroot/wt && got rm beta > /dev/null)
	echo "new file" > $testroot/wt/foo
	(cd $testroot/wt && got add foo > /dev/null)

	(cd $testroot/wt && got stage alpha beta foo > $testroot/stdout)

	(cd $testroot/wt && got rm beta \
		> $testroot/stdout 2> $testroot/stderr)
	ret="$?"
	if [ "$ret" == "0" ]; then
		echo "got rm command succeeded unexpectedly" >&2
		test_done "$testroot" "1"
		return 1
	fi
	echo "got: realpath: beta: No such file or directory" \
		> $testroot/stderr.expected
	cmp -s $testroot/stderr.expected $testroot/stderr
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stderr.expected $testroot/stderr
		test_done "$testroot" "$ret"
		return 1
	fi

	for f in alpha foo; do
		echo "got: $f: file has staged changes" \
			> $testroot/stderr.expected
		(cd $testroot/wt && got rm $f \
			> $testroot/stdout 2> $testroot/stderr)
		ret="$?"
		if [ "$ret" == "0" ]; then
			echo "got rm command succeeded unexpectedly" >&2
			test_done "$testroot" "1"
			return 1
		fi
		cmp -s $testroot/stderr.expected $testroot/stderr
		ret="$?"
		if [ "$ret" != "0" ]; then
			diff -u $testroot/stderr.expected $testroot/stderr
			test_done "$testroot" "$ret"
			return 1
		fi
	done

	echo ' M alpha' > $testroot/stdout.expected
	echo ' D beta' >> $testroot/stdout.expected
	echo ' A foo' >> $testroot/stdout.expected

	(cd $testroot/wt && got status > $testroot/stdout)
	cmp -s $testroot/stdout.expected $testroot/stdout
	ret="$?"
	if [ "$ret" != "0" ]; then
		diff -u $testroot/stdout.expected $testroot/stdout
	fi
	test_done "$testroot" "$ret"
}

run_test test_stage_basic
run_test test_stage_status
run_test test_stage_add_already_staged_file
run_test test_stage_rm_already_staged_file
