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import os
import platform
import unittest
import json
## permit to import from parent directory also in
import sys
from pathlib import Path


parent = Path(__file__).parent.parent
sys.path.append(str(parent))
from tests import EVENTS_FOLDER, set_seed
from webApp import app
from constants import ALLOWED_ORIGIN, app_logger


class TestWebApp(unittest.TestCase):
    def setUp(self):
        self.app = app.test_client()
        if platform.system() == "Windows" or platform.system() == "Win32":
            os.environ["PYTHONUTF8"] = "1"
            os.environ["IS_TESTING"] = "TRUE"

    def tearDown(self):
        if platform.system() == "Windows" or platform.system() == "Win32" and "PYTHONUTF8" in os.environ:
            del os.environ["PYTHONUTF8"]
            del os.environ["IS_TESTING"]

    def test_main_route(self):
        response = self.app.get('/')
        self.assertEqual(response.status_code, 200)
        self.assertIn(b'<html', response.data)

    def test_getNext(self):
        set_seed()
        input_data = {"category": "1", "language": "de"}
        response = self.app.post('/getSample', json=input_data, content_type='application/json')
        self.assertEqual(response.status_code, 200)
        output_data = response.data.decode("utf-8")
        output_data = json.loads(output_data)
        self.assertEqual(
        output_data, {
            'ipa_transcript': 'ziː vɪl niːmandɛːn haɪ̯raːtɛːn.',
            'real_transcript': ['Sie will niemanden heiraten.'],
            'transcript_translation': ''
        })

    def test_GetAccuracyFromRecordedAudio(self):
        set_seed()
        with open(EVENTS_FOLDER / "GetAccuracyFromRecordedAudio.json", "r") as src:
            inputs_outputs = json.load(src)
            inputs = inputs_outputs["inputs"]
            inputs_by_language = inputs["en"]
            loaded_body = inputs_by_language["body"]
        input_data = json.loads(loaded_body)
        response = self.app.post('/GetAccuracyFromRecordedAudio', json=input_data, content_type='application/json')
        self.assertEqual(response.status_code, 200)
        output_data = response.data.decode("utf-8")
        output_data = json.loads(output_data)
        for k in [
                "real_transcript", "ipa_transcript", "pronunciation_accuracy", "real_transcripts", "matched_transcripts",
                "pair_accuracy_category", "start_time", "end_time", "is_letter_correct_all_words"
            ]:
            self.assertIn(k, output_data)

    def test_GetAccuracyFromRecordedAudio_raises_exception(self):
        set_seed()
        with open(EVENTS_FOLDER / "GetAccuracyFromRecordedAudio.json", "r") as src:
            inputs_outputs = json.load(src)
            inputs = inputs_outputs["inputs"]
            inputs_by_language = inputs["en"]
            loaded_body = inputs_by_language["body"]
        input_data = json.loads(loaded_body)
        input_data["language"] = "wrong_language"
        response = self.app.post('/GetAccuracyFromRecordedAudio', json=input_data, content_type='application/json')
        self.assertEqual(response.status_code, 200)
        output_data = response.data.decode("utf-8")
        output_data = json.loads(output_data)
        self.assertEqual(output_data, {})

    def test_change_model(self):
        from constants import MODEL_NAME_TESTING
        set_seed()
        input_data = {"modelName": MODEL_NAME_TESTING}
        response = self.app.post('/changeModel', json=input_data, content_type='application/json')
        self.assertEqual(response.status_code, 200)
        output_data = response.data.decode("utf-8")
        self.assertEqual(output_data, f'Model changed to {input_data["modelName"]}!')

    def test_change_model_raises_exception(self):
        set_seed()
        input_data = {"modelName": "wrong_model"}
        response = self.app.post('/changeModel', json=input_data, content_type='application/json')
        self.assertEqual(response.status_code, 500)
        output_data = response.data.decode("utf-8")
        self.assertEqual(output_data, 'Internal server error')


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