#!/bin/bash -ex

export GIT_COMMITTER_NAME="A U Thor"
export GIT_AUTHOR_NAME="A U Thor"
export GIT_COMMITTER_EMAIL="a.u.thor@example.com"
export GIT_AUTHOR_EMAIL="a.u.thor@example.com"

test_tick () {
	# from git/t/test-lib.sh
	if test -z "${test_tick+set}"
        then
                test_tick=1112911993
        else
                test_tick=$(($test_tick + 60))
        fi
        GIT_COMMITTER_DATE="$test_tick -0700"
        GIT_AUTHOR_DATE="$test_tick -0700"
        export GIT_COMMITTER_DATE GIT_AUTHOR_DATE
}

git_commit () {
	test_tick
	git commit "$@"
}

git_merge () {
	test_tick
	git merge "$@"

}

test_tick
rm -rf .git *.txt ?
git init
echo "On master" >>master.txt
git add master.txt
git_commit -a -m "On master"

echo "On master" >>master.txt
git_commit -a -m "On master again"

git checkout -b a 6c8b137b1c652731597c89668f417b8695f28dd7
mkdir a

echo a1 >>a/a1.txt
git add a/a1.txt
git_commit -a -m "First a/a1"

echo a2 >>a/a2.txt
git add a/a2.txt
git_commit -a -m "First a/a2"

git merge master

echo a1 >>a/a1.txt
git add a/a1.txt
git_commit -a -m "Second a/a1"
git branch pa

echo a2 >>a/a2.txt
git add a/a2.txt
git_commit -a -m "Second a/a2"

git checkout -b b 58be4659bb571194ed4562d04b359d26216f526e

mkdir b
echo b1 >>b/b1.txt
git add b/b1.txt
git_commit -a -m "First b/b1"

echo b2 >>b/b2.txt
git add b/b2.txt
git_commit -a -m "First b/b2"

git merge a

echo b1 >>b/b1.txt
git add b/b1.txt
git_commit -a -m "Second b/b1"

echo b2 >>b/b2.txt
git add b/b2.txt
git_commit -a -m "Second b/b2"

rm -rf a b c master.txt
mkdir c
rm -f ./git/index
echo ref: refs/heads/c >.git/HEAD

echo c1 >>c/c1.txt
git add c/c1.txt
git_commit -a -m "First c/c1, no parent"

echo c2 >>c/c2.txt
git add c/c2.txt
git_commit -a -m "First c/c2"

git_merge a

echo c1 >>c/c1.txt
git add c/c2.txt
git_commit -a -m "Second c/c1"

echo c2 >>c/c2.txt
git add c/c2.txt
git_commit -a -m "Second c/c2"

git_merge b

git checkout -b d a

echo "a1" >>a/a1
git add a/a1
git_commit -a -m "Third a/a1"

git checkout -b e a

echo "a1" >>a/a1
git add a/a1
git_commit -a -m "Fourth a/a1"

git checkout master

git_merge c d e

git repack -d

git tag A a
git tag -a -m "An annotated tag" B a^

git repack -d

Bnth=B
for nth in 2nd 3rd 4th 5th 6th 7th 8th 9th 10th; do
	git tag -a -m "An $nth level annotated tag" "B$nth" "$Bnth"
	Bnth="B$nth"
done

git repack -d

git checkout -b f a
mkdir f
echo "an eff" >f/f
git add f/f
git commit -m "An eff"
git checkout -b g a
mkdir f
echo "an F" >f/f
git add f/f
git commit -m "An F"

git repack -d

git checkout -b symlink master
ln -s c/c1.txt symlink.txt
git add symlink.txt
git_commit -m "A symlink"

git checkout -b gitlink master
git submodule add "$(pwd)/.git" submodule
git_commit -m "A gitlink"

git repack -d
git pack-refs --all

gitk --all master