# --------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
import os
import asyncio
from azure.core.credentials import AzureKeyCredential
from azure.eventgrid.models import *
from azure.core.messaging import CloudEvent
from azure.core.exceptions import HttpResponseError
from azure.eventgrid.aio import EventGridClient

EVENTGRID_KEY: str = os.environ["EVENTGRID_KEY"]
EVENTGRID_ENDPOINT: str = os.environ["EVENTGRID_ENDPOINT"]
TOPIC_NAME: str = os.environ["EVENTGRID_TOPIC_NAME"]
EVENT_SUBSCRIPTION_NAME: str = os.environ["EVENTGRID_EVENT_SUBSCRIPTION_NAME"]


# Create a client
client = EventGridClient(EVENTGRID_ENDPOINT, AzureKeyCredential(EVENTGRID_KEY))


cloud_event_reject = CloudEvent(
    data="reject", source="https://example.com", type="example"
)
cloud_event_release = CloudEvent(
    data="release", source="https://example.com", type="example"
)
cloud_event_ack = CloudEvent(
    data="acknowledge", source="https://example.com", type="example"
)


async def run():
    async with client:
        # Publish a CloudEvent
        try:
            await client.publish_cloud_events(
                topic_name=TOPIC_NAME, body=cloud_event_reject
            )
        except HttpResponseError:
            raise

        # Publish a list of CloudEvents
        try:
            list_of_cloud_events = [cloud_event_release, cloud_event_ack]
            await client.publish_cloud_events(
                topic_name=TOPIC_NAME, body=list_of_cloud_events
            )
        except HttpResponseError:
            raise

        # Receive Published Cloud Events
        try:
            receive_results = await client.receive_cloud_events(
                topic_name=TOPIC_NAME,
                event_subscription_name=EVENT_SUBSCRIPTION_NAME,
                max_events=10,
                max_wait_time=10,
            )
        except HttpResponseError:
            raise

        # Iterate through the results and collect the lock tokens for events we want to release/acknowledge/reject:

        release_events = []
        acknowledge_events = []
        reject_events = []

        for detail in receive_results.value:
            data = detail.event.data
            broker_properties = detail.broker_properties
            if data == "release":
                release_events.append(broker_properties.lock_token)
            elif data == "acknowledge":
                acknowledge_events.append(broker_properties.lock_token)
            else:
                reject_events.append(broker_properties.lock_token)

        # Release/Acknowledge/Reject events

        if len(release_events) > 0:
            try:
                release_tokens = ReleaseOptions(lock_tokens=release_events)
                release_result = await client.release_cloud_events(
                    topic_name=TOPIC_NAME,
                    event_subscription_name=EVENT_SUBSCRIPTION_NAME,
                    release_options=release_tokens,
                )
            except HttpResponseError:
                raise

            for succeeded_lock_token in release_result.succeeded_lock_tokens:
                print(f"Succeeded Lock Token:{succeeded_lock_token}")

        if len(acknowledge_events) > 0:
            try:
                ack_tokens = AcknowledgeOptions(lock_tokens=acknowledge_events)
                ack_result = await client.acknowledge_cloud_events(
                    topic_name=TOPIC_NAME,
                    event_subscription_name=EVENT_SUBSCRIPTION_NAME,
                    acknowledge_options=ack_tokens,
                )
            except HttpResponseError:
                raise

            for succeeded_lock_token in ack_result.succeeded_lock_tokens:
                print(f"Succeeded Lock Token:{succeeded_lock_token}")

        if len(reject_events) > 0:
            try:
                reject_tokens = RejectOptions(lock_tokens=reject_events)
                reject_result = await client.reject_cloud_events(
                    topic_name=TOPIC_NAME,
                    event_subscription_name=EVENT_SUBSCRIPTION_NAME,
                    reject_options=reject_tokens,
                )
            except HttpResponseError:
                raise

            for succeeded_lock_token in reject_result.succeeded_lock_tokens:
                print(f"Succeeded Lock Token:{succeeded_lock_token}")


if __name__ == "__main__":
    asyncio.get_event_loop().run_until_complete(run())
