#!/bin/sh
set -e

main() {
	[ "$1" = 'run' ]  && run_docker
	[ "$1" = 'test' ] && run_tests
}

run_docker() {
	docker run \
		--tty \
		--rm \
		--mount "src=$(pwd),target=/home/test/git-extras,type=bind" \
		'lholota/bash-git' \
		bash '/home/test/git-extras/test-git-delete-submodule' 'test'
}

run_tests() {
	before_all
	before_each && test_before_commit
	before_each && test_after_commit
}

before_all() {
	before_all_config
	before_all_create_repo 'app'
	before_all_create_repo 'module'
}

before_all_config() {
	git config --global user.email "test@test"
	git config --global user.name "Test Script"
	PATH="/home/test/git-extras/bin:$PATH"
}

# $1 - name
before_all_create_repo() {
	cd /home/test || { echo "error: '/home/test' doesn't exist" && exit 1; }
	mkdir "$1"
	cd "$1" || exit 1
	git init
	echo "$1" >'README.md'
	git add 'README.md'
	git commit -m 'initial commit'
}

before_each() {
	cd '/home/test/app' || exit 1
	mkdir -p 'lib'
	git submodule add '/home/test/module' 'lib/module'
}

test_before_commit() {
	echo 'TEST: before_commit'
	bash /home/test/git-extras/bin/git-delete-submodule 'lib/module'
}

test_after_commit() {
	echo 'TEST: after_commit'
	cd '/home/test/app' || exit 1
	git add 'lib/module'
	git commit -m 'add submodule lib/module'
	bash  /home/test/git-extras/bin/git-delete-submodule 'lib/module'
}

main "$@"