# Copyright (c) Alibaba, Inc. and its affiliates.
import os
import tempfile
import unittest
import uuid

from requests.exceptions import HTTPError

from modelscope.hub.api import HubApi
from modelscope.hub.constants import Licenses, ModelVisibility
from modelscope.hub.errors import GitError
from modelscope.hub.file_download import model_file_download
from modelscope.hub.repository import Repository
from modelscope.hub.snapshot_download import snapshot_download
from modelscope.utils.constant import ModelFile
from .test_utils import (TEST_ACCESS_TOKEN1, TEST_ACCESS_TOKEN2,
                         TEST_MODEL_CHINESE_NAME, TEST_MODEL_ORG,
                         delete_credential)

download_model_file_name = 'test.bin'


class HubPrivateFileDownloadTest(unittest.TestCase):

    def setUp(self):
        self.old_cwd = os.getcwd()
        self.api = HubApi()
        self.token, _ = self.api.login(TEST_ACCESS_TOKEN1)
        self.model_name = 'pf-%s' % (uuid.uuid4().hex)
        self.model_id = '%s/%s' % (TEST_MODEL_ORG, self.model_name)
        self.revision = 'v0.1_test_revision'
        self.api.create_model(
            model_id=self.model_id,
            visibility=ModelVisibility.PRIVATE,
            license=Licenses.APACHE_V2,
            chinese_name=TEST_MODEL_CHINESE_NAME,
        )

    def prepare_case(self):
        temporary_dir = tempfile.mkdtemp()
        self.model_dir = os.path.join(temporary_dir, self.model_name)
        repo = Repository(self.model_dir, clone_from=self.model_id)
        os.system("echo 'testtest'>%s"
                  % os.path.join(self.model_dir, download_model_file_name))
        repo.push('add model')
        repo.tag_and_push(self.revision, 'Test revision')

    def tearDown(self):
        # credential may deleted or switch login name, we need re-login here
        # to ensure the temporary model is deleted.
        self.api.login(TEST_ACCESS_TOKEN1)
        os.chdir(self.old_cwd)
        self.api.delete_model(model_id=self.model_id)

    def test_snapshot_download_private_model(self):
        self.prepare_case()
        snapshot_path = snapshot_download(self.model_id, self.revision)
        assert os.path.exists(os.path.join(snapshot_path, ModelFile.README))

    def test_snapshot_download_private_model_no_permission(self):
        self.prepare_case()
        self.token, _ = self.api.login(TEST_ACCESS_TOKEN2)
        with self.assertRaises(HTTPError):
            snapshot_download(self.model_id, self.revision)

    def test_snapshot_download_private_model_without_login(self):
        self.prepare_case()
        delete_credential()
        with self.assertRaises(HTTPError):
            snapshot_download(self.model_id, self.revision)

    def test_download_file_private_model(self):
        self.prepare_case()
        file_path = model_file_download(self.model_id, ModelFile.README,
                                        self.revision)
        assert os.path.exists(file_path)

    def test_download_file_private_model_no_permission(self):
        self.prepare_case()
        self.token, _ = self.api.login(TEST_ACCESS_TOKEN2)
        with self.assertRaises(HTTPError):
            model_file_download(self.model_id, ModelFile.README, self.revision)

    def test_download_file_private_model_without_login(self):
        self.prepare_case()
        delete_credential()
        with self.assertRaises(HTTPError):
            model_file_download(self.model_id, ModelFile.README, self.revision)

    def test_snapshot_download_local_only(self):
        self.prepare_case()
        with self.assertRaises(ValueError):
            snapshot_download(
                self.model_id, self.revision, local_files_only=True)
        snapshot_path = snapshot_download(self.model_id, self.revision)
        assert os.path.exists(os.path.join(snapshot_path, ModelFile.README))
        snapshot_path = snapshot_download(
            self.model_id, self.revision, local_files_only=True)
        assert os.path.exists(snapshot_path)

    def test_file_download_local_only(self):
        self.prepare_case()
        with self.assertRaises(ValueError):
            model_file_download(
                self.model_id,
                ModelFile.README,
                self.revision,
                local_files_only=True)
        file_path = model_file_download(self.model_id, ModelFile.README,
                                        self.revision)
        assert os.path.exists(file_path)
        file_path = model_file_download(
            self.model_id,
            ModelFile.README,
            revision=self.revision,
            local_files_only=True)
        assert os.path.exists(file_path)


if __name__ == '__main__':
    unittest.main()