import gradio as gr
from PIL import Image, ImageDraw, ImageFont
import scipy.io.wavfile as wavfile



from transformers import pipeline




narrator = pipeline("text-to-speech",
                    model="kakao-enterprise/vits-ljs")

object_detector = pipeline("object-detection",
                model="facebook/detr-resnet-50")


def generate_audio(text):
   
    narrated_text = narrator(text)

   
    wavfile.write("output.wav", rate=narrated_text["sampling_rate"],
                  data=narrated_text["audio"][0])

   
    return "output.wav"



def read_objects(detection_objects):
   
    object_counts = {}

   
    for detection in detection_objects:
        label = detection['label']
        if label in object_counts:
            object_counts[label] += 1
        else:
            object_counts[label] = 1

  
    response = "This picture contains"
    labels = list(object_counts.keys())
    for i, label in enumerate(labels):
        response += f" {object_counts[label]} {label}"
        if object_counts[label] > 1:
            response += "s"
        if i < len(labels) - 2:
            response += ","
        elif i == len(labels) - 2:
            response += " and"

    response += "."

    return response



def draw_bounding_boxes(image, detections, font_path=None, font_size=20):
    """
    Draws bounding boxes on the given image based on the detections.

    :param image: PIL.Image object
    :param detections: List of detection results, where each result is a dictionary containing
                       'score', 'label', and 'box' keys. 'box' itself is a dictionary with 'xmin',
                       'ymin', 'xmax', 'ymax'.
    :param font_path: Path to the TrueType font file to use for text.
    :param font_size: Size of the font to use for text.
    :return: PIL.Image object with bounding boxes drawn.
    """
   
    draw_image = image.copy()
    draw = ImageDraw.Draw(draw_image)

  
    if font_path:
        font = ImageFont.truetype(font_path, font_size)
    else:
        
        font = ImageFont.load_default()
       
    for detection in detections:
        box = detection['box']
        xmin = box['xmin']
        ymin = box['ymin']
        xmax = box['xmax']
        ymax = box['ymax']

       
        draw.rectangle([(xmin, ymin), (xmax, ymax)], outline="red", width=3)

       
        label = detection['label']
        score = detection['score']
        text = f"{label} {score:.2f}"

       
        if font_path:  
            text_size = draw.textbbox((xmin, ymin), text, font=font)
        else:
            
            text_size = draw.textbbox((xmin, ymin), text)

        draw.rectangle([(text_size[0], text_size[1]), (text_size[2], text_size[3])], fill="red")
        draw.text((xmin, ymin), text, fill="white", font=font)

    return draw_image


def detect_object(image):
    raw_image = image
    output = object_detector(raw_image)
    processed_image = draw_bounding_boxes(raw_image, output)
    natural_text = read_objects(output)
    processed_audio = generate_audio(natural_text)
    return processed_image, processed_audio


demo = gr.Interface(fn=detect_object,
                    inputs=[gr.Image(label="Select Image",type="pil")],
                    outputs=[gr.Image(label="Processed Image", type="pil"), gr.Audio(label="Generated Audio")],
                    title="@GenAILearniverse Project 7: Object Detector with Audio",
                    description="THIS APPLICATION WILL BE USED TO HIGHLIGHT OBJECTS AND GIVES AUDIO DESCRIPTION FOR THE PROVIDED INPUT IMAGE.")
demo.launch()

# print(output)