#!/bin/bash
# Run this in the directory that contains the git repository (branch) with the output

readarray -t profiles <dockerhub-metadata.profiles

codePath="$(cd "$(dirname "$0")" >/dev/null 2>&1; pwd -P)"

# Check that we're in the right place; there should be one dir for each profile and a dockerhub-metadata.retrieve.log in this directory and nothing else (except possibly hidden stuff like .git)
files=("${profiles[@]}" dockerhub-metadata.profiles dockerhub-metadata.retrieve.log)
if ! diff -q <(printf "%s\0" "${files[@]}" | LC_ALL=C sort -z) <(printf "%s\0" * | LC_ALL=C sort -z) >/dev/null
then
	echo "ERROR: Current directory appears to not match the expected structure; refusing to continue" >&2
	echo "Expected: ${files[@]}" >&2
	exit 1
fi

# Create a temporary directory for the new run's output (hidden so it isn't caught in the deletion below)
tmpDir="$(mktemp --directory --tmpdir=. .tmp.XXXXXXXXXX)"

# Run (and exit if something goes wrong)
pushd "${tmpDir}" 2>/dev/null
set -e
PYTHONUNBUFFERED=1 "${codePath}"/retrieve "${profiles[@]}" 2> >(tee dockerhub-metadata.retrieve.log >&2)
set +e
popd 2>/dev/null

# Delete the old stuff
rm -r *

# Move new stuff here
mv -n "${tmpDir}"/* .

# Delete the temporary directory, which should now be empty
rmdir "${tmpDir}"
if [[ $? -ne 0 ]]
then
	echo "ERROR: Could not delete temporary directory ${tmpDir}; not empty?" >&2
	#TODO: This should block future runs as well to prevent mixed up data or something.
	exit 1
fi

# Recreate the profiles file, sorted
printf "%s\n" "${profiles[@]}" | LC_ALL=C sort >dockerhub-metadata.profiles

# git stuffs
git add --all -- ':!.tmp.*'
git commit --message 'Automatic run'
git push