from prefect import flow, task

from nested_deployments.child_flow import child_flow
from nested_deployments.deployments import get_deployment, apply_deployment


@task
def get_values():
    return [1, 2, 3]


@flow
def master_flow():
    values = get_values()

    for val in values:
        deploy = get_deployment(
            flow=child_flow,
            deployment_name=f"child-deployment-{val}",
            parameters={
                "val": val
            }
        )
        apply_deployment(deploy)


def deploy_main_flow():
    deploy = get_deployment(
        flow=master_flow,
        deployment_name="main-deployment",
        parameters={}
    )
    apply_deployment(deploy)


if __name__ == '__main__':
    deploy_main_flow()

from prefect import flow


@flow()
def child_flow(val: int):
    print(f"value is {val}")

import os

from prefect.deployments import Deployment
from prefect.filesystems import LocalFileSystem
from prefect.settings import PREFECT_UI_URL


def get_ui_deployment_url(deployment_id) -> str:
    ui_url = PREFECT_UI_URL.value() or "<http://ephemeral-orion/api>"
    return f"{ui_url}/deployments/deployment/{deployment_id}"


def get_deployment(flow, deployment_name, parameters):
    base_path = os.getcwd()

    fs = LocalFileSystem(basepath=base_path)

    deployment = Deployment.build_from_flow(
        flow=flow,
        name=deployment_name,
        schedule=None,
        storage=fs,
        path=base_path,
        parameters=parameters,
        load_existing=False,
        skip_upload=True,
    )
    return deployment


def apply_deployment(deployment):
    _id = deployment.apply()

    url = get_ui_deployment_url(_id)
    print(f"Deployment '{deployment.name}' deployed. Url: {url}")

12:19:09.037 | ERROR   | Flow run 'hulking-salmon' - Flow could not be retrieved from deployment.
Traceback (most recent call last):
  File "/Users/a/code/prefect-minimal/venv/lib/python3.9/site-packages/prefect/engine.py", line 262, in retrieve_flow_then_begin_flow_run
    flow = await load_flow_from_flow_run(flow_run, client=client)
  File "/Users/a/code/prefect-minimal/venv/lib/python3.9/site-packages/prefect/client/utilities.py", line 47, in with_injected_client
    return await fn(*args, **kwargs)
  File "/Users/a/code/prefect-minimal/venv/lib/python3.9/site-packages/prefect/deployments.py", line 170, in load_flow_from_flow_run
    await storage_block.get_directory(from_path=deployment.path, local_path=".")
  File "/Users/a/code/prefect-minimal/venv/lib/python3.9/site-packages/prefect/filesystems.py", line 143, in get_directory
    copytree(from_path, local_path, dirs_exist_ok=True)
  File "/usr/local/Cellar/python@3.9/3.9.13_1/Frameworks/Python.framework/Versions/3.9/lib/python3.9/shutil.py", line 566, in copytree
    with os.scandir(src) as itr:
FileNotFoundError: [Errno 2] No such file or directory: '/private/var/folders/qh/3t4219m142g_k67hmw5nr7xm0000gp/T/tmps_epjldzprefect'

Flow could not be retrieved from deployment.
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/prefect/engine.py", line 277, in retrieve_flow_then_begin_flow_run
    flow = await load_flow_from_flow_run(flow_run, client=client)
  File "/usr/local/lib/python3.9/site-packages/prefect/client/utilities.py", line 40, in with_injected_client
    return await fn(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/prefect/deployments.py", line 194, in load_flow_from_flow_run
    await storage_block.get_directory(from_path=deployment.path, local_path=".")
  File "/usr/local/lib/python3.9/site-packages/prefect/filesystems.py", line 147, in get_directory
    copytree(from_path, local_path, dirs_exist_ok=True)
  File "/usr/local/lib/python3.9/shutil.py", line 566, in copytree
    with os.scandir(src) as itr:
FileNotFoundError: [Errno 2] No such file or directory: '/home/deployment'