# Set args from a local environment file.

if [ -e ".env" ]; then

source .env

fi

# Set args from file specified on the command-line.

if [[ $1 = "-c" || $1 = "--config-file" ]]; then

source "$2"

shift 2

fi

# Parse arg flags

# If something is exposed as an environment variable, set/overwrite it

# here. Otherwise, set/overwrite the internal variable instead.

while : ; do

if [[ $1 = "-h" || $1 = "--help" ]]; then

echo "$help_message"

return 0

elif [[ $1 = "-v" || $1 = "--verbose" ]]; then

verbose=true

shift

elif [[ $1 = "-e" || $1 = "--allow-empty" ]]; then

allow_empty=true

shift

elif [[ ( $1 = "-m" || $1 = "--message" ) && -n $2 ]]; then

commit_message=$2

shift 2

elif [[ $1 = "-n" || $1 = "--no-hash" ]]; then

GIT_DEPLOY_APPEND_HASH=false

shift

else

break

fi

done

# Set internal option vars from the environment and arg flags. All internal

# vars should be declared here, with sane defaults if applicable.

# Source directory & target branch.

deploy_directory=${GIT_DEPLOY_DIR:-dist}

deploy_subdirectory=${GIT_DEPLOY_SUBDIR:-}

deploy_branch=${GIT_DEPLOY_BRANCH:-gh-pages}

#if no user identity is already set in the current git environment, use this:

default_username=${GIT_DEPLOY_USERNAME:-deploy.sh}

default_email=${GIT_DEPLOY_EMAIL:-}

#repository to deploy to. must be readable and writable.

repo=${GIT_DEPLOY_REPO:-origin}

#append commit hash to the end of message by default

append_hash=${GIT_DEPLOY_APPEND_HASH:-true}

echo ==== Initial deploy

if [[ -z $deploy_subdirectory ]]; then

git --work-tree "$deploy_directory" checkout --orphan $deploy_branch

git --work-tree "$deploy_directory" add --all

commit_and_push

else

echo "Subdirectory '$deploy_subdirectory' does not exist. Aborting." >&2

return 1

fi

echo ==== Incremental deploy

#make deploy_branch the current branch

git symbolic-ref HEAD refs/heads/$deploy_branch

#put the previously committed contents of deploy_branch into the index

git --work-tree "$deploy_directory" reset --mixed --quiet

git --work-tree "$deploy_directory" add --all $deploy_subdirectory

set +o errexit

diff=$(git --work-tree "$deploy_directory" diff --exit-code --quiet HEAD --)$?

set -o errexit

case $diff in

0) echo No changes to files in $deploy_directory. Skipping commit.;;

1) commit_and_push;;

*)

echo git diff exited with code $diff. Aborting. Staying on branch $deploy_branch so you can debug. To switch back to main, use: git symbolic-ref HEAD refs/heads/main && git reset --mixed >&2

return $diff

;;

esac

echo ==== Commit

set_user_id

git --work-tree "$deploy_directory" commit -m "$commit_message" || echo ==== Skip

echo ==== Push

disable_expanded_output

#--quiet is important here to avoid outputting the repo URL, which may contain a secret token

git push --quiet $repo $deploy_branch

enable_expanded_output

if [ $verbose ]; then

set -o xtrace

set +o verbose

fi

if [ $verbose ]; then

set +o xtrace

set -o verbose

fi

if [[ -z `git config user.name` ]]; then

git config user.name "$default_username"

fi

if [[ -z `git config user.email` ]]; then

git config user.email "$default_email"

fi

if [[ $previous_branch = "HEAD" ]]; then

#we weren't on any branch before, so just set HEAD back to the commit it was on

git update-ref --no-deref HEAD $commit_hash $deploy_branch

else

git symbolic-ref HEAD refs/heads/$previous_branch

fi

git reset --mixed