Restart jekyll serve on _config.yml change

gistfile1.txt

#!/bin/bash

REF_FILE="./.reftime"
ALL_PARAMS=$@

# Function to start to serve in the background
start_process() {
    echo -e "\nStarting to serve...\n"

    reset_watcher

    rm -Rf _site

    bundle exec jekyll serve ${ALL_PARAMS} &
    PROC_PID=$!

    echo -e "\n\n\n"
}

stop_process() {
    echo -e "\nStopping to serve...\n"
    kill -SIGTERM ${PROC_PID}
    wait ${PROC_PID}  # Wait for the process to terminate
    rm -f "${REF_FILE}"
}

check_watched_file_changed() {
    RES="$(find "$1" -newer "${REF_FILE}")"
    if [ "${RES}x" == "x" ]; then
        return 1
    else
        return 0
    fi
}

reset_watcher() {
    touch "${REF_FILE}"
}

# Function to handle file changes
handle_file_changes() {
    # Space separated list of files to watch
    FILES_TO_WATCH=("./_config.yml")

      for FILE in "${FILES_TO_WATCH[@]}"; do
        # Check if the file was modified in the last second
        if check_watched_file_changed "${FILE}" ; then
            echo -e "\nFile $file changed. Restarting to serve...\n"

            stop_process
            start_process

            reset_watcher
            break  # Break out of the loop after the first file change
        fi
    done
}

# Main loop
start_process

while true; do
    KEY=0
    # Check for keyboard input without blocking
    read -t 1 -n 1 KEY

    case ${KEY} in
        s)
            stop_process
            exit 0
            ;;
        r)
            stop_process
            start_process
            ;;
    esac

    handle_file_changes

    sleep 1
done