from transformers import pipeline
from datasets import load_dataset
import gradio as gr
import torch
from diffusers import DiffusionPipeline

"""### **Arabic: Text-Generation:**
Generate a poetry in Arabic.
"""

pipe_ar = pipeline('text-generation', framework='pt', model='akhooli/ap2023', tokenizer='akhooli/ap2023')

"""### **English: Text-Generation:**
Generate a poetry in English.
"""

pipe_en = pipeline("text-generation", model="ashiqabdulkhader/GPT2-Poet", from_tf=True)

"""### **Arabic and English: Text-To-Speech:**
Convert the Arabic/English poetry to speech.
"""

# Initialize text-to-speech models for Arabic and English
# Arabic: text-to-speech
synthesiser_arabic = pipeline("text-to-speech", model="MBZUAI/speecht5_tts_clartts_ar")
embeddings_dataset_arabic = load_dataset("herwoww/arabic_xvector_embeddings", split="validation")
speaker_embedding_arabic = torch.tensor(embeddings_dataset_arabic[105]["speaker_embeddings"]).unsqueeze(0)

# English: text-to-speech
synthesiser_english = pipeline("text-to-speech", model="microsoft/speecht5_tts")
embeddings_dataset_english = load_dataset("Matthijs/cmu-arctic-xvectors", split="validation")
speaker_embedding_english = torch.tensor(embeddings_dataset_english[7306]["xvector"]).unsqueeze(0)

"""### **English Text-To-Image:**
Convert the starter of the English poetry to an image.
"""

pipe_image = DiffusionPipeline.from_pretrained("CompVis/stable-diffusion-v1-4")

"""### **Translator from Arabic to English:**
The text-to-image model doesn't support Arabic, therefore we need to translate the starter of the Arabic poetry to English in order to generate image.
"""

pipe_translator = pipeline("translation", model="Helsinki-NLP/opus-mt-ar-en")

"""### **Primary Function:**
This function will receive 2 inputs from the Gradio interface, and execute the following functions and return 3 outputs:
1. The generated poem.
2. The audio.
3. The image.
"""

# Generate poem based on language and convert it to audio and image
def generate_poem(selected_language, text):
    try:
        if selected_language == "English":
            poem = generate_poem_english(text) # Return the generated poem from the generate_poem_english function
            sampling_rate, audio_data = text_to_speech_english(poem) # Return the audio from the text_to_speech_english function
            image = generate_image_from_poem(text) # Return the image from the generate_image_from_poem function
        elif selected_language == "Arabic":
            poem = generate_poem_arabic(text) # Return the generated poem from the generate_poem_arabic function
            sampling_rate, audio_data = text_to_speech_arabic(poem) # Return the audio from the text_to_speech_arabic function
            translated_text = translate_arabic_to_english(text) # Return the translated poem from Arabic to English
            image = generate_image_from_poem(translated_text) # Return the image from the generate_image_from_poem function

        return poem, (sampling_rate, audio_data), image
    except Exception as e:
        return f"Error: {str(e)}", None, None

"""### **Poem Generation Function:**
This function is responsible for generating a poem (text) in Arabic or English, based on the provided text.
"""

# Poem generation for Arabic
def generate_poem_arabic(text):
    temp = 1.0
    topk = 50
    topp = 0.9
    penalty = 1.2
    generated_text = pipe_ar(text, max_length=96, do_sample=True, temperature=temp, top_k=topk, top_p=topp, repetition_penalty=penalty,
                             min_length=64, no_repeat_ngram_size=3, return_full_text=True,
                             num_beams=5, num_return_sequences=1)[0]["generated_text"]
    clean_text = generated_text.replace("-", "") # To get rid of the dashes generated by the model.
    return clean_text

# Poem generation for English
def generate_poem_english(text):
    generated_text = pipe_en(text, do_sample=True, max_length=100, top_k=50, top_p=0.9, temperature=1.0, num_return_sequences=3)[0]['generated_text']
    clean_text = generated_text.replace("</s>", "") # To get rid of the </s> generated by the model.
    return clean_text

"""### **Audio Function:**
This function is responsible for generating audio in Arabic or English, based on the provided text.
"""

# Text-to-speech conversion for Arabic
def text_to_speech_arabic(text):
    speech = synthesiser_arabic(text, forward_params={"speaker_embeddings": speaker_embedding_arabic})
    audio_data = speech["audio"]
    sampling_rate = speech["sampling_rate"]
    return (sampling_rate, audio_data)

# Text-to-speech conversion for English
def text_to_speech_english(text):
    speech = synthesiser_english(text, forward_params={"speaker_embeddings": speaker_embedding_english})
    audio_data = speech["audio"]
    sampling_rate = speech["sampling_rate"]
    return (sampling_rate, audio_data)

"""### **Image Function:**
This function is responsible for generating an image based on the provided text.
"""

# Image generation function
def generate_image_from_poem(poem_text):
    image = pipe_image(poem_text).images[0]
    return image

"""### **Translation Function:**
This function is responsible for translating Arabic input to English, to be used for the image function, which accepts only English inputs.
"""

# Translation function from Arabic to English
def translate_arabic_to_english(text):
    translated_text = pipe_translator(text)[0]['translation_text']
    return translated_text

"""### **CSS Styling:**"""

custom_css = """
body {
    background-color: #f4f4f9;
    color: #333;
}
.gradio-container {
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    background-color: #fff;
}
label {
    color: #4A90E2;
    font-weight: bold;
}

input[type="text"],
textarea {
    border: 1px solid #4A90E2;
}
textarea {
    height: 150px;
}

button {
    background-color: #4A90E2;
    color: #fff;
    border-radius: 5px;
    cursor: pointer;
}
button:hover {
    background-color: #357ABD;
}

.dropdown {
    border: 1px solid #4A90E2;
    border-radius: 4px;
}

"""

"""### **Examples for Gradio:**
Provide 4 predefined inputs to demonstrate how the interface works.
"""

examples = [
    # First parameter is for the dropdown menu, and the second parameter is for the starter of the poem
    ["English", "The shining sun rises over the calm ocean"],
    ["Arabic", "الورود تتفتح في الربيع"],
    ["English", "The night sky is filled with stars and dreams"],
    ["Arabic", "اشعة الشمس المشرقة"]
]

"""### **Gradio Interface:**
Creating a Gradio interface to generate a poem, read the poem, and generate an image based on that poem.
"""

my_model = gr.Interface(
    fn=generate_poem,  # The primary function that will receive the inputs (language and the starter of the poem)
    inputs=[
        gr.Dropdown(["English", "Arabic"], label="Select Language"), # Dropdown menu to select the language, either "English" or "Arabic"
        gr.Textbox(label="Enter a sentence")  # Textbox where the user will input a sentence or phrase to generate the poem
    ],

    outputs=[
        gr.Textbox(label="Generated Poem", lines=10),  # Textbox to display the generated poem
        gr.Audio(label="Generated Audio", type="numpy"),  # Audio output for the generated poem
        gr.Image(label="Generated Image")  # Image output for the generated image
    ],

    examples=examples,  # Predefined examples to guide the user
    css=custom_css  # Applying custom CSS
)
my_model.launch()