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import os

from azure.developer.devcenter import DevCenterClient
from azure.developer.devcenter.models import PowerState
from azure.identity import DefaultAzureCredential

"""
FILE: dev_box_restart_sample.py

DESCRIPTION:
    This sample demonstrates how to restart, stop and start a dev box using python DevCenterClient. 
    For this sample, you must have a running dev box. More details on how to create a dev box 
    at dev_box_create_sample.py sample in this folder

USAGE:
    python devbox_restart_sample.py

    Set the environment variables with your own values before running the sample:
    1) DEVCENTER_ENDPOINT - the endpoint for your devcenter
"""


def dev_box_restart_stop_start():

    # Set the values of the dev center endpoint, client ID, and client secret of the AAD application as environment variables:
    # DEVCENTER_ENDPOINT, AZURE_TENANT_ID, AZURE_CLIENT_ID, AZURE_CLIENT_SECRET
    try:
        endpoint = os.environ["DEVCENTER_ENDPOINT"]
    except KeyError:
        raise ValueError("Missing environment variable 'DEVCENTER_ENDPOINT' - please set it before running the example")

    # Build a client through AAD
    client = DevCenterClient(endpoint, credential=DefaultAzureCredential())

    # List Dev Boxes
    dev_boxes = client.list_all_dev_boxes_by_user("me")
    if dev_boxes:
        print("List of dev boxes: ")
        for dev_box in dev_boxes:
            print(f"{dev_box.name}")

        # Select first dev box in the list
        target_dev_box = list(dev_boxes)[0]
    else:
        raise ValueError("Missing Dev Box - please create one before running the example.")

    # Get the target dev box properties
    project_name = target_dev_box.project_name
    user = target_dev_box.user
    dev_box_name = target_dev_box.name

    # Stop dev box if it's running
    if target_dev_box.power_state == PowerState.Running:
        stop_poller = client.begin_stop_dev_box(project_name, user, dev_box_name)
        stop_result = stop_poller.result()
        print(f"Stopping dev box completed with status {stop_result.status}")

    # At this point we should have a stopped dev box . Let's start it
    start_poller = client.begin_start_dev_box(project_name, user, dev_box_name)
    start_result = start_poller.result()
    print(f"Starting dev box completed with status {start_result.status}")

    # Restart the dev box
    restart_poller = client.begin_restart_dev_box(project_name, user, dev_box_name)
    restart_result = restart_poller.result()
    print(f"Done restarting the dev box with status {start_result.status}")


if __name__ == "__main__":
    dev_box_restart_stop_start()