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

import pytest
import platform
import functools

from azure.core.exceptions import HttpResponseError, ClientAuthenticationError
from azure.core.credentials import AzureKeyCredential
from testcase import TextAnalyticsTest, GlobalTextAnalyticsAccountPreparer
from testcase import TextAnalyticsClientPreparer as _TextAnalyticsClientPreparer
from azure.ai.textanalytics import (
    DetectLanguageInput,
    TextAnalyticsClient,
    DetectLanguageInput,
    VERSION,
    TextAnalyticsApiVersion,
)

# pre-apply the client_cls positional argument so it needn't be explicitly passed below
TextAnalyticsClientPreparer = functools.partial(_TextAnalyticsClientPreparer, TextAnalyticsClient)

class TestDetectLanguage(TextAnalyticsTest):

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_no_single_input(self, client):
        with self.assertRaises(TypeError):
            response = client.detect_language("hello world")

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_all_successful_passing_dict(self, client):

        docs = [{"id": "1", "text": "I should take my cat to the veterinarian."},
                {"id": "2", "text": "Este es un document escrito en Español."},
                {"id": "3", "text": "猫は幸せ"},
                {"id": "4", "text": "Fahrt nach Stuttgart und dann zum Hotel zu Fu."}]

        response = client.detect_language(docs, show_stats=True)

        self.assertEqual(response[0].primary_language.name, "English")
        self.assertEqual(response[1].primary_language.name, "Spanish")
        self.assertEqual(response[2].primary_language.name, "Japanese")
        self.assertEqual(response[3].primary_language.name, "German")
        self.assertEqual(response[0].primary_language.iso6391_name, "en")
        self.assertEqual(response[1].primary_language.iso6391_name, "es")
        self.assertEqual(response[2].primary_language.iso6391_name, "ja")
        self.assertEqual(response[3].primary_language.iso6391_name, "de")

        for doc in response:
            self.assertIsNotNone(doc.id)
            self.assertIsNotNone(doc.statistics)
            self.assertIsNotNone(doc.primary_language.confidence_score)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_all_successful_passing_text_document_input(self, client):
        docs = [
            DetectLanguageInput(id="1", text="I should take my cat to the veterinarian"),
            DetectLanguageInput(id="2", text="Este es un document escrito en Español."),
            DetectLanguageInput(id="3", text="猫は幸せ"),
            DetectLanguageInput(id="4", text="Fahrt nach Stuttgart und dann zum Hotel zu Fu.")
        ]

        response = client.detect_language(docs)

        self.assertEqual(response[0].primary_language.name, "English")
        self.assertEqual(response[1].primary_language.name, "Spanish")
        self.assertEqual(response[2].primary_language.name, "Japanese")
        self.assertEqual(response[3].primary_language.name, "German")
        self.assertEqual(response[0].primary_language.iso6391_name, "en")
        self.assertEqual(response[1].primary_language.iso6391_name, "es")
        self.assertEqual(response[2].primary_language.iso6391_name, "ja")
        self.assertEqual(response[3].primary_language.iso6391_name, "de")

        for doc in response:
            self.assertIsNotNone(doc.primary_language.confidence_score)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_passing_only_string(self, client):
        docs = [
            u"I should take my cat to the veterinarian.",
            u"Este es un document escrito en Español.",
            u"猫は幸せ",
            u"Fahrt nach Stuttgart und dann zum Hotel zu Fu.",
            u""
        ]

        response = client.detect_language(docs)
        self.assertEqual(response[0].primary_language.name, "English")
        self.assertEqual(response[1].primary_language.name, "Spanish")
        self.assertEqual(response[2].primary_language.name, "Japanese")
        self.assertEqual(response[3].primary_language.name, "German")
        self.assertTrue(response[4].is_error)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_input_with_some_errors(self, client):
        docs = [{"id": "1", "country_hint": "United States", "text": "I should take my cat to the veterinarian."},
                {"id": "2", "text": "Este es un document escrito en Español."},
                {"id": "3", "text": ""},
                {"id": "4", "text": "Fahrt nach Stuttgart und dann zum Hotel zu Fu."}]

        response = client.detect_language(docs)

        self.assertTrue(response[0].is_error)
        self.assertFalse(response[1].is_error)
        self.assertTrue(response[2].is_error)
        self.assertFalse(response[3].is_error)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_input_with_all_errors(self, client):
        text = ""
        for _ in range(5121):
            text += "x"

        docs = [{"id": "1", "text": ""},
                {"id": "2", "text": ""},
                {"id": "3", "text": ""},
                {"id": "4", "text": text}]

        response = client.detect_language(docs)

        for resp in response:
            self.assertTrue(resp.is_error)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_output_same_order_as_input(self, client):
        docs = [
            DetectLanguageInput(id="1", text="one"),
            DetectLanguageInput(id="2", text="two"),
            DetectLanguageInput(id="3", text="three"),
            DetectLanguageInput(id="4", text="four"),
            DetectLanguageInput(id="5", text="five")
        ]

        response = client.detect_language(docs)

        for idx, doc in enumerate(response):
            self.assertEqual(str(idx + 1), doc.id)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer(client_kwargs={"text_analytics_account_key": ""})
    def test_empty_credential_class(self, client):
        with self.assertRaises(ClientAuthenticationError):
            response = client.detect_language(
                ["This is written in English."]
            )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer(client_kwargs={"text_analytics_account_key": "xxxxxxxxxxxx"})
    def test_bad_credentials(self, client):
        with self.assertRaises(ClientAuthenticationError):
            response = client.detect_language(
                ["This is written in English."]
            )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_bad_document_input(self, client):
        docs = "This is the wrong type"

        with self.assertRaises(TypeError):
            response = client.detect_language(docs)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_mixing_inputs(self, client):
        docs = [
            {"id": "1", "text": "Microsoft was founded by Bill Gates and Paul Allen."},
            DetectLanguageInput(id="2", text="I did not like the hotel we stayed at. It was too expensive."),
            u"You cannot mix string input with the above inputs"
        ]
        with self.assertRaises(TypeError):
            response = client.detect_language(docs)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_out_of_order_ids(self, client):
        docs = [{"id": "56", "text": ":)"},
                {"id": "0", "text": ":("},
                {"id": "22", "text": ""},
                {"id": "19", "text": ":P"},
                {"id": "1", "text": ":D"}]

        response = client.detect_language(docs)
        in_order = ["56", "0", "22", "19", "1"]
        for idx, resp in enumerate(response):
            self.assertEqual(resp.id, in_order[idx])

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_show_stats_and_model_version(self, client):
        def callback(response):
            self.assertIsNotNone(response)
            self.assertIsNotNone(response.model_version, msg=response.raw_response)
            self.assertIsNotNone(response.raw_response)
            self.assertEqual(response.statistics.document_count, 5)
            self.assertEqual(response.statistics.transaction_count, 4)
            self.assertEqual(response.statistics.valid_document_count, 4)
            self.assertEqual(response.statistics.erroneous_document_count, 1)

        docs = [{"id": "56", "text": ":)"},
                {"id": "0", "text": ":("},
                {"id": "22", "text": ""},
                {"id": "19", "text": ":P"},
                {"id": "1", "text": ":D"}]

        response = client.detect_language(
            docs,
            show_stats=True,
            model_version="latest",
            raw_response_hook=callback
        )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_batch_size_over_limit(self, client):
        docs = [u"hello world"] * 1050
        with self.assertRaises(HttpResponseError):
            response = client.detect_language(docs)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_country_hint(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        docs = [
            u"This was the best day of my life.",
            u"I did not like the hotel we stayed at. It was too expensive.",
            u"The restaurant was not as good as I hoped."
        ]

        response = client.detect_language(docs, country_hint="CA", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_dont_use_country_hint(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        docs = [
            u"This was the best day of my life.",
            u"I did not like the hotel we stayed at. It was too expensive.",
            u"The restaurant was not as good as I hoped."
        ]

        response = client.detect_language(docs, country_hint="", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_per_item_dont_use_country_hint(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 2)
            country_str = "\"countryHint\": \"US\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 1)


        docs = [{"id": "1", "country_hint": "", "text": "I will go to the park."},
                {"id": "2", "country_hint": "", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs, raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_country_hint_and_obj_input(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        docs = [
            DetectLanguageInput(id="1", text="I should take my cat to the veterinarian."),
            DetectLanguageInput(id="2", text="Este es un document escrito en Español."),
            DetectLanguageInput(id="3", text="猫は幸せ"),
        ]

        response = client.detect_language(docs, country_hint="CA", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_country_hint_and_dict_input(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        docs = [{"id": "1", "text": "I will go to the park."},
                {"id": "2", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs, country_hint="CA", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_country_hint_and_obj_per_item_hints(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 2)
            country_str = "\"countryHint\": \"US\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 1)

        docs = [
            DetectLanguageInput(id="1", text="I should take my cat to the veterinarian.", country_hint="CA"),
            DetectLanguageInput(id="4", text="Este es un document escrito en Español.", country_hint="CA"),
            DetectLanguageInput(id="3", text="猫は幸せ"),
        ]

        response = client.detect_language(docs, country_hint="US", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_whole_batch_country_hint_and_dict_per_item_hints(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 1)
            country_str = "\"countryHint\": \"US\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 2)

        docs = [{"id": "1", "country_hint": "US", "text": "I will go to the park."},
                {"id": "2", "country_hint": "US", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs, country_hint="CA", raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer(client_kwargs={"default_country_hint": "CA"})
    def test_client_passed_default_country_hint(self, client):
        def callback(resp):
            country_str = "\"countryHint\": \"CA\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        def callback_2(resp):
            country_str = "\"countryHint\": \"DE\""
            country = resp.http_request.body.count(country_str)
            self.assertEqual(country, 3)

        docs = [{"id": "1", "text": "I will go to the park."},
                {"id": "2", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs, raw_response_hook=callback)
        response = client.detect_language(docs, country_hint="DE", raw_response_hook=callback_2)
        response = client.detect_language(docs, raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    def test_rotate_subscription_key(self, resource_group, location, text_analytics_account, text_analytics_account_key):
        credential = AzureKeyCredential(text_analytics_account_key)
        client = TextAnalyticsClient(text_analytics_account, credential)

        docs = [{"id": "1", "text": "I will go to the park."},
                {"id": "2", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs)
        self.assertIsNotNone(response)

        credential.update("xxx")  # Make authentication fail
        with self.assertRaises(ClientAuthenticationError):
            response = client.detect_language(docs)

        credential.update(text_analytics_account_key)  # Authenticate successfully again
        response = client.detect_language(docs)
        self.assertIsNotNone(response)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_user_agent(self, client):
        def callback(resp):
            self.assertIn("azsdk-python-ai-textanalytics/{} Python/{} ({})".format(
                VERSION, platform.python_version(), platform.platform()),
                resp.http_request.headers["User-Agent"]
            )

        docs = [{"id": "1", "text": "I will go to the park."},
                {"id": "2", "text": "I did not like the hotel we stayed at."},
                {"id": "3", "text": "The restaurant had really good food."}]

        response = client.detect_language(docs, raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_document_attribute_error_no_result_attribute(self, client):
        docs = [{"id": "1", "text": ""}]
        response = client.detect_language(docs)

        # Attributes on DocumentError
        self.assertTrue(response[0].is_error)
        self.assertEqual(response[0].id, "1")
        self.assertIsNotNone(response[0].error)

        # Result attribute not on DocumentError, custom error message
        try:
            primary_language = response[0].primary_language
        except AttributeError as custom_error:
            self.assertEqual(
                custom_error.args[0],
                '\'DocumentError\' object has no attribute \'primary_language\'. '
                'The service was unable to process this document:\nDocument Id: 1\nError: '
                'InvalidDocument - Document text is empty.\n'
            )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_document_attribute_error_nonexistent_attribute(self, client):
        docs = [{"id": "1", "text": ""}]
        response = client.detect_language(docs)

        # Attribute not found on DocumentError or result obj, default behavior/message
        try:
            primary_language = response[0].attribute_not_on_result_or_error
        except AttributeError as default_behavior:
            self.assertEqual(
                default_behavior.args[0],
                '\'DocumentError\' object has no attribute \'attribute_not_on_result_or_error\''
            )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_bad_model_version_error(self, client):
        docs = [{"id": "1", "language": "english", "text": "I did not like the hotel we stayed at."}]

        try:
            result = client.detect_language(docs, model_version="bad")
        except HttpResponseError as err:
            self.assertEqual(err.error.code, "ModelVersionIncorrect")
            self.assertIsNotNone(err.error.message)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_document_errors(self, client):
        text = ""
        for _ in range(5121):
            text += "x"

        docs = [{"id": "1", "text": ""},
                {"id": "2", "text": text}]

        doc_errors = client.detect_language(docs)
        self.assertEqual(doc_errors[0].error.code, "InvalidDocument")
        self.assertIsNotNone(doc_errors[0].error.message)
        self.assertEqual(doc_errors[1].error.code, "InvalidDocument")
        self.assertIsNotNone(doc_errors[1].error.message)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_document_warnings(self, client):
        # No warnings actually returned for detect_language. Will update when they add
        docs = [
            {"id": "1", "text": "This won't actually create a warning :'("},
        ]

        result = client.detect_language(docs)
        for doc in result:
            doc_warnings = doc.warnings
            self.assertEqual(len(doc_warnings), 0)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_not_passing_list_for_docs(self, client):
        docs = {"id": "1", "text": "hello world"}
        with pytest.raises(TypeError) as excinfo:
            client.detect_language(docs)
        assert "Input documents cannot be a dict" in str(excinfo.value)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_missing_input_records_error(self, client):
        docs = []
        with pytest.raises(ValueError) as excinfo:
            client.detect_language(docs)
        assert "Input documents can not be empty or None" in str(excinfo.value)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_passing_none_docs(self, client):
        with pytest.raises(ValueError) as excinfo:
            client.detect_language(None)
        assert "Input documents can not be empty or None" in str(excinfo.value)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_duplicate_ids_error(self, client):
        # Duplicate Ids
        docs = [{"id": "1", "text": "hello world"},
                {"id": "1", "text": "I did not like the hotel we stayed at."}]
        try:
            result = client.detect_language(docs)
        except HttpResponseError as err:
            self.assertEqual(err.error.code, "InvalidDocument")
            self.assertIsNotNone(err.error.message)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_batch_size_over_limit_error(self, client):
        # Batch size over limit
        docs = [u"hello world"] * 1001
        try:
            response = client.detect_language(docs)
        except HttpResponseError as err:
            self.assertEqual(err.error.code, "InvalidDocumentBatch")
            self.assertIsNotNone(err.error.message)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_invalid_country_hint_method(self, client):
        docs = [{"id": "1", "text": "hello world"}]

        response = client.detect_language(docs, country_hint="United States")
        self.assertEqual(response[0].error.code, "InvalidCountryHint")
        self.assertIsNotNone(response[0].error.message)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_invalid_country_hint_docs(self, client):
        docs = [{"id": "1", "country_hint": "United States", "text": "hello world"}]

        response = client.detect_language(docs)
        self.assertEqual(response[0].error.code, "InvalidCountryHint")
        self.assertIsNotNone(response[0].error.message)

    @GlobalTextAnalyticsAccountPreparer()
    def test_country_hint_none(self, resource_group, location, text_analytics_account, text_analytics_account_key):
        client = TextAnalyticsClient(text_analytics_account, AzureKeyCredential(text_analytics_account_key))

        # service will eventually support this and we will not need to send "" for input == "none"
        documents = [{"id": "0", "country_hint": "none", "text": "This is written in English."}]
        documents2 = [DetectLanguageInput(id="1", country_hint="none", text="This is written in English.")]

        def callback(response):
            country_str = "\"countryHint\": \"\""
            country = response.http_request.body.count(country_str)
            self.assertEqual(country, 1)

        # test dict
        result = client.detect_language(documents, raw_response_hook=callback)
        # test DetectLanguageInput
        result2 = client.detect_language(documents2, raw_response_hook=callback)
        # test per-operation
        result3 = client.detect_language(documents=["this is written in english"], country_hint="none", raw_response_hook=callback)
        # test client default
        new_client = TextAnalyticsClient(text_analytics_account, AzureKeyCredential(text_analytics_account_key), default_country_hint="none")
        result4 = new_client.detect_language(documents=["this is written in english"], raw_response_hook=callback)

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_country_hint_kwarg(self, client):

        def callback(response):
            country_str = "\"countryHint\": \"ES\""
            self.assertEqual(response.http_request.body.count(country_str), 1)
            self.assertIsNotNone(response.model_version)
            self.assertIsNotNone(response.statistics)

        res = client.detect_language(
            documents=["this is written in english"],
            model_version="latest",
            show_stats=True,
            country_hint="ES",
            raw_response_hook=callback
        )

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer()
    def test_pass_cls(self, client):
        def callback(pipeline_response, deserialized, _):
            return "cls result"
        res = client.detect_language(
            documents=["Test passing cls to endpoint"],
            cls=callback
        )
        assert res == "cls result"

    @GlobalTextAnalyticsAccountPreparer()
    @TextAnalyticsClientPreparer(client_kwargs={"api_version": TextAnalyticsApiVersion.V3_0})
    def test_string_index_type_not_fail_v3(self, client):
        # make sure that the addition of the string_index_type kwarg for v3.1-preview.1 doesn't
        # cause v3.0 calls to fail
        client.detect_language(["please don't fail"])