"""Meme engine module for handling the generation of meme images."""

import random
from PIL import Image, ImageFont, ImageDraw


class MemeEngine:
    """Class to generate memes from images and text."""

    def __init__(self, output_path):
        """Initialize meme engine with path to save generated memes."""
        self.output_path = output_path

    def resize_image(self, img, width=500):
        """Resize image to specified width while maintaining aspect ratio."""
        if img.size[0] > width:
            ratio = width / (img.size[0] * 1.0)
            height = ratio * img.size[1]
            img = img.resize((int(width), int(height)), Image.NEAREST)
        return img

    def draw_text(self, image, message):
        """Draw text on the image."""
        draw = ImageDraw.Draw(image)
        font = ImageFont.truetype(
            "./_data/font/calibri_regular.ttf", int(image.size[1] / 20)
        )

        # Calculate text bounding box to ensure it fits on the image
        text_bbox = draw.textbbox((0, 0), message, font=font)
        text_width = text_bbox[2] - text_bbox[0]
        text_height = text_bbox[3] - text_bbox[1]

        # Generate random position that keeps text within image bounds
        max_x = max(0, image.size[0] - text_width - 10)
        max_y = max(0, image.size[1] - text_height - 10)

        x = random.randint(10, max_x) if max_x > 10 else 10
        y = random.randint(10, max_y) if max_y > 10 else 10

        draw.text((x, y), message, font=font, fill="white")
        return image

    def make_meme(self, img_path, text, author, width=500) -> str:
        """Generate a meme image with given text and author."""
        output_file = f"{self.output_path}/{random.randint(0, 10000)}.jpg"
        message = f"{text}\n- {author}"

        try:
            with Image.open(img_path) as img:
                image_resize = self.resize_image(img, width=width)
                image_draw = self.draw_text(image_resize, message)
                image_draw.save(output_file)
        except Exception as err:
            print(f"Error: {err}")

        return output_file