"""
Watch for changes in the static site and build them
"""

import click
import time  
from watchdog.observers import Observer  
from watchdog.events import PatternMatchingEventHandler

import app.settings.app_cfg as cfg
from app.site.builder import build_site, build_file

class SiteBuilder(PatternMatchingEventHandler):
  """
  Handler for filesystem changes to the content path
  """
  patterns = ["*.md"]

  def on_modified(self, event):
    print(event.src_path, event.event_type)
    build_file(event.src_path)

  def on_created(self, event):
    print(event.src_path, event.event_type)
    build_file(event.src_path)

@click.command()
@click.pass_context
def cli(ctx):
  """
  Run the observer and start watching for changes
  """
  print("{} is now being watched for changes.".format(cfg.DIR_SITE_CONTENT))
  observer = Observer()
  observer.schedule(SiteBuilder(), path=cfg.DIR_SITE_CONTENT, recursive=True)
  observer.start()

  #build_file(cfg.DIR_SITE_CONTENT + "/datasets/brainwash/index.md")
  
  try:
    while True:
      time.sleep(1)
  except KeyboardInterrupt:
    observer.stop()

  observer.join()