# coding=utf-8
# ------------------------------------
# Copyright (c) Microsoft.
# Licensed under the MIT License.
# ------------------------------------

"""
FILE: sample_load_snapshot.py
DESCRIPTION:
    This sample demonstrates how to load a **trained model snapshot** in a Text Authoring project.
USAGE:
    python sample_load_snapshot.py
REQUIRED ENV VARS (for AAD / DefaultAzureCredential):
    AZURE_TEXT_ENDPOINT
    AZURE_CLIENT_ID
    AZURE_TENANT_ID
    AZURE_CLIENT_SECRET
NOTE:
    If you want to use AzureKeyCredential instead, set:
      - AZURE_TEXT_ENDPOINT
      - AZURE_TEXT_KEY
OPTIONAL ENV VARS:
    PROJECT_NAME         # defaults to "<project-name>"
    TRAINED_MODEL_LABEL  # defaults to "<trained-model-label>"
"""

# [START text_authoring_load_snapshot]
import os
from azure.identity import DefaultAzureCredential
from azure.core.exceptions import HttpResponseError
from azure.ai.textanalytics.authoring import TextAuthoringClient


def sample_load_snapshot():
    # settings
    endpoint = os.environ["AZURE_TEXT_ENDPOINT"]
    project_name = os.environ.get("PROJECT_NAME", "<project-name>")
    trained_model_label = os.environ.get("TRAINED_MODEL_LABEL", "<trained-model-label>")

    # create a client with AAD
    credential = DefaultAzureCredential()
    client = TextAuthoringClient(endpoint, credential=credential)

    # project-scoped client
    project_client = client.get_project_client(project_name)

    # start load snapshot (LRO) and handle success/error
    poller = project_client.trained_model.begin_load_snapshot(trained_model_label)
    try:
        poller.result()  # completes with None; raises on failure
        print("Load snapshot completed.")
        print(f"done: {poller.done()}")
        print(f"status: {poller.status()}")
    except HttpResponseError as e:
        print(f"Operation failed: {e.message}")
        print(e.error)


# [END text_authoring_load_snapshot]


def main():
    sample_load_snapshot()


if __name__ == "__main__":
    main()