import tempfile

import curio

from asyncwatch import watch, EVENTS

#Create some temp file to serve as an examle
temp_dir = tempfile.mkdtemp()

#Wait until a matching set of events is
#received, and clean the resources afterwards
async def watch_once():
    async with watch(temp_dir, EVENTS.CREATE) as events:
        for event in events:
            print('Received event of type ', event.tp, 'for filename',
                  event.name)

#Watch continously
async def watch_continously():
    async for events in watch(temp_dir, (EVENTS.CLOSE, EVENTS.MODIFY)):
        for event in events:
            #Events act like bit masks
            if event.tp & EVENTS.CLOSE:
                print("Closed:" , event.name)
            elif event.tp & EVENTS.MODIFY:
                print("Modified", event.name)
            if event.name == 'done':
                print("Done watching")
                return

#Entry point for curio
async def main():
    #We wait for events and do something else meanwhile
    oneoff_task = await curio.spawn(watch_once())
    continous_task = await curio.spawn(watch_continously())


    #Like actually triggering the events
    async with curio.aopen(temp_dir+'/newfile', 'w') as f:
        await f.write("Hello")

    async with curio.aopen(temp_dir+'/done', 'w'):
        pass

    #Join the watch task
    await oneoff_task.join()
    await continous_task.join()

curio.run(main())