import os

import torch

from Architectures.ControllabilityGAN.GAN import GanWrapper
from InferenceInterfaces.ToucanTTSInterface import ToucanTTSInterface
from Utility.storage_config import MODELS_DIR


class ControllableInterface:

    def __init__(self, gpu_id="cpu", available_artificial_voices=1000):
        if gpu_id == "cpu":
            os.environ["CUDA_VISIBLE_DEVICES"] = ""
        else:
            os.environ["CUDA_DEVICE_ORDER"] = "PCI_BUS_ID"
            os.environ["CUDA_VISIBLE_DEVICES"] = f"{gpu_id}"
        self.device = "cuda" if gpu_id != "cpu" else "cpu"
        self.model = ToucanTTSInterface(device=self.device, tts_model_path="Meta", language="eng")
        self.wgan = GanWrapper(os.path.join(MODELS_DIR, "Embedding", "embedding_gan.pt"), device=self.device)
        self.generated_speaker_embeds = list()
        self.available_artificial_voices = available_artificial_voices

    def read(self,
             prompt,
             voice_seed,
             prosody_creativity,
             duration_scaling_factor,
             pause_duration_scaling_factor,
             pitch_variance_scale,
             energy_variance_scale,
             emb_slider_1,
             emb_slider_2,
             emb_slider_3,
             emb_slider_4,
             emb_slider_5,
             emb_slider_6,
             loudness_in_db
             ):
        self.wgan.set_latent(voice_seed)
        controllability_vector = torch.tensor([emb_slider_1,
                                               emb_slider_2,
                                               emb_slider_3,
                                               emb_slider_4,
                                               emb_slider_5,
                                               emb_slider_6], dtype=torch.float32)
        embedding = self.wgan.modify_embed(controllability_vector)
        self.model.set_utterance_embedding(embedding=embedding)

        phones = self.model.text2phone.get_phone_string(prompt)
        if len(phones) > 1800:
           prompt = "Your input was too long. Please try either a shorter text or split it into several parts."

        print(prompt)
        wav, sr, fig = self.model(prompt,
                                  input_is_phones=False,
                                  duration_scaling_factor=duration_scaling_factor,
                                  pitch_variance_scale=pitch_variance_scale,
                                  energy_variance_scale=energy_variance_scale,
                                  pause_duration_scaling_factor=pause_duration_scaling_factor,
                                  return_plot_as_filepath=True,
                                  prosody_creativity=prosody_creativity,
                                  loudness_in_db=loudness_in_db)
        return sr, wav, fig