#!/bin/sh

#

# This file is part of GitPython and is released under the

# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/

set -eu

fallback_repo_for_tags='https://github.com/gitpython-developers/GitPython.git'

ci() {

# For now, check just these, as a false positive could lead to data loss.

test -n "${TRAVIS-}" || test -n "${GITHUB_ACTIONS-}"

}

no_version_tags() {

test -z "$(git tag -l '[0-9]*' 'v[0-9]*')"

}

warn() {

if test -n "${GITHUB_ACTIONS-}"; then

printf '::warning ::%s\n' "$*" >&2 # Annotate workflow.

else

printf '%s\n' "$@" >&2

fi

}

if ! ci; then

printf 'This operation will destroy locally modified files. Continue ? [N/y]: ' >&2

read -r answer

case "$answer" in

[yY])

;;

*)

exit 2 ;;

esac

fi

# Stop if we have run this. (You can delete __testing_point__ to let it rerun.)

# This also keeps track of where we are, so we can get back here.

git tag __testing_point__

# The tests need a branch called master.

#

# If master is locally absent but more than one remote has it, checkout fails

# by default even if all remotes agree, and we fall back to creating it at

# HEAD. The reflog we populate below then traces HEAD's history rather than

# a remote master's, but master is reset to __testing_point__ either way.

git checkout master -- || git checkout -b master

# The tests need a reflog history on the master branch.

git reset --hard HEAD~1

git reset --hard HEAD~1

git reset --hard HEAD~1

# Point the master branch where we started, so we test the correct code.

git reset --hard __testing_point__

# The tests need some version tags. Try to get them even in forks. This fetches

# other objects too. So, locally, we always do it, for a consistent experience.

if ! ci || no_version_tags; then

git fetch --all --tags

fi

# If we still have no version tags, try to get them from the original repo.

if no_version_tags; then

warn 'No local or remote version tags found. Trying fallback remote:' \

"$fallback_repo_for_tags"

# git fetch supports * but not [], and --no-tags means no *other* tags, so...

printf 'refs/tags/%d*:refs/tags/%d*\n' 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 |

xargs git fetch --no-tags "$fallback_repo_for_tags"

if no_version_tags; then

warn 'No version tags found anywhere. Some tests will fail.'

fi

fi