Demonstrates some limitations of passing secrets to blocks

import sys
from typing import Any

from flows_sdk.blocks import CodeBlock
from flows_sdk.flows import Flow, Manifest, Parameter
from flows_sdk.package_utils import export_flow
from flows_sdk.utils import str_to_deterministic_uuid_4, workflow_input

SECRETS_IN_CCB_FLOW_IDENTIFIER = 'SECRET_IN_CCB_FLOW_VARIANTS'
SECRET_IN_CCB_FLOW_UUID = str_to_deterministic_uuid_4(SECRETS_IN_CCB_FLOW_IDENTIFIER)

def entry_point_flow() -> Flow:
    return secrets_in_ccb_flow()

class FlowInputs:
    SECRET_FLOW_INPUT_OBJECT = 'secret_flow_input_object'
    SECRET_FLOW_INPUT_STRING = 'secret_flow_input_string'

def secrets_in_ccb_flow() -> Flow:
    def use_secret(secret: Any) -> dict:
        # CAUTION: This is just an example to help experimenting with secrets by using
        # View Flow Run UI.
        # DO NOT return secrets from blocks in real code!!!
        return {'received_secret_obj': secret}

# This is allowed and works, the secret can be a full-blown json object.
    use_secret_first_level = CodeBlock(
        reference_name='use_secret_first_level',
        code=use_secret,
        code_input={'secret': workflow_input(FlowInputs.SECRET_FLOW_INPUT_OBJECT)},
    )

# Compiles and runs, but will not use the correct secret value.
    # Check the block output in View Flow Run.
    use_secret_deep_nesting = CodeBlock(
        reference_name='use_secret_deep_nesting',
        code=use_secret,
        code_input={
            'secret': {'deeply_nested': workflow_input(FlowInputs.SECRET_FLOW_INPUT_OBJECT)}
        },
    )

# Compiles and runs, but will not use the correct secret value.
    # Check the block output in View Flow Run.
    use_secret_substring = CodeBlock(
        reference_name='use_secret_substring',
        code=use_secret,
        code_input={'secret': f'concatenate {workflow_input(FlowInputs.SECRET_FLOW_INPUT_STRING)}'},
    )

return Flow(
        title='Flow that demonstrates limitations of passing down of secrets in various ways',
        description='Flow that demonstrates limitations of passing down of secrets in various ways',
        blocks=[use_secret_first_level, use_secret_deep_nesting, use_secret_substring],
        owner_email='flows.sdk@hyperscience.com',
        manifest=Manifest(
            identifier=SECRETS_IN_CCB_FLOW_IDENTIFIER,
            input=[
                Parameter(
                    name=FlowInputs.SECRET_FLOW_INPUT_OBJECT,
                    title='Secret object',
                    type='json',
                    secret=True,
                    optional=True,
                ),
                Parameter(
                    name=FlowInputs.SECRET_FLOW_INPUT_STRING,
                    title='Secret string',
                    type='string',
                    secret=True,
                    optional=True,
                ),
            ],
        ),
        uuid=SECRET_IN_CCB_FLOW_UUID,
    )

if __name__ == '__main__':
    export_filename = None
    if len(sys.argv) > 1:
        export_filename = sys.argv[1]

export_flow(flow=entry_point_flow(), filename=export_filename)