# Copyright 2017 Mycroft AI Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

from .tts import TTSValidator
from .remote_tts import RemoteTTS
from mycroft.configuration import Configuration
from requests.auth import HTTPBasicAuth


class WatsonTTS(RemoteTTS):
    PARAMS = {"accept": "audio/wav"}

    def __init__(
        self,
        lang,
        config,
        url="https://stream.watsonplatform.net/text-to-speech/api",
        api_path="/v1/synthesize",
    ):
        super(WatsonTTS, self).__init__(
            lang, config, url, api_path, WatsonTTSValidator(self)
        )
        self.type = "wav"
        user = self.config.get("user") or self.config.get("username")
        password = self.config.get("password")
        api_key = self.config.get("apikey")
        if self.url.endswith(api_path):
            self.url = self.url[: -len(api_path)]

        if api_key is None:
            self.auth = HTTPBasicAuth(user, password)
        else:
            self.auth = HTTPBasicAuth("apikey", api_key)

    def build_request_params(self, sentence):
        params = self.PARAMS.copy()
        params["LOCALE"] = self.lang
        params["voice"] = self.voice
        params["X-Watson-Learning-Opt-Out"] = self.config.get(
            "X-Watson-Learning-Opt-Out", "true"
        )
        params["text"] = sentence.encode("utf-8")
        return params


class WatsonTTSValidator(TTSValidator):
    def __init__(self, tts):
        super(WatsonTTSValidator, self).__init__(tts)

    def validate_lang(self):
        # TODO
        pass

    def validate_connection(self):
        config = Configuration.get().get("tts", {}).get("watson", {})
        user = config.get("user") or config.get("username")
        password = config.get("password")
        apikey = config.get("apikey")
        if user and password or apikey:
            return
        else:
            raise ValueError("user/pass or apikey for IBM tts is not defined")

    def get_tts_class(self):
        return WatsonTTS