#!/bin/sh
set -eu

if [ -z "$INPUT_AUTHOR_NAME" ] # Check if the variable is empty
then AUTHOR_NAME=$(cat "$GITHUB_EVENT_PATH" | jq '.head_commit.author.name' | sed 's/"//g') # If so, fetch the author from the event
else AUTHOR_NAME=$INPUT_AUTHOR_NAME # If not, use that value
fi

if [ -z "$INPUT_AUTHOR_EMAIL" ]
then AUTHOR_EMAIL=$(cat "$GITHUB_EVENT_PATH" | jq '.head_commit.author.email' | sed 's/"//g')
else AUTHOR_EMAIL=$INPUT_AUTHOR_EMAIL
fi

echo "Using '$AUTHOR_NAME' and '$AUTHOR_EMAIL' as author information."

# Set up .netrc file with GitHub credentials
git_setup() {
  cat <<- EOF > $HOME/.netrc
        machine github.com
        login $GITHUB_ACTOR
        password $GITHUB_TOKEN

        machine api.github.com
        login $GITHUB_ACTOR
        password $GITHUB_TOKEN
EOF
    chmod 600 $HOME/.netrc

    git config --global user.email "$AUTHOR_EMAIL"
    git config --global user.name "$AUTHOR_NAME"
}

add() {
    if $INPUT_FORCE 
    then find $INPUT_PATH -name "$INPUT_PATTERN" | while read x; do git add -f $x; done
    else find $INPUT_PATH -name "$INPUT_PATTERN" | while read x; do git add $x; done
    fi
}

# This is needed to make the check work for untracked files
echo "Staging files in commit path..."
add

echo "Checking for uncommitted changes in the git working tree..."
# This section only runs if there have been file changes
if ! git diff --cached --exit-code
then
    git_setup

    git fetch 

    # Verify if the branch needs to be created
    if ! git rev-parse --verify --quiet "${GITHUB_REF:11}"
    then 
        echo "Creating branch..."
        git branch "${GITHUB_REF:11}"
    fi

    # Switch to branch from current workflow run
    echo "Switching branch..."
    git checkout "${GITHUB_REF:11}"

    echo "Adding files..."
    add

    echo "Creating commit..."
    git commit -m "$INPUT_MESSAGE" --author="$AUTHOR_NAME <$AUTHOR_EMAIL>"

    echo "Pushing to repo..."
    git push --set-upstream origin "${GITHUB_REF:11}"
else
    echo "Working tree clean. Nothing to commit."
fi