# export_image.py

import argparse
import os
import time
from playwright.sync_api import sync_playwright

# Define the output directory as a constant
OUTPUT_DIR = "images"


def export_image(url_path, filename_prefix):
    """
    Launches a headless browser, navigates to a URL path, and screenshots
    the .image-container element, saving it to the OUTPUT_DIR.
    """
    print(f"-> Preparing to export image for: {filename_prefix}")

    # 1. Ensure the output directory exists
    os.makedirs(OUTPUT_DIR, exist_ok=True)

    base_url = "http://127.0.0.1:5000"
    url = f"{base_url}/{url_path}"

    # 2. Construct the full output path including the new directory
    output_file = os.path.join(OUTPUT_DIR, f"{filename_prefix}_{int(time.time())}.png")

    with sync_playwright() as p:
        try:
            browser = p.chromium.launch()
            page = browser.new_page()

            page.set_viewport_size({"width": 1920, "height": 1080})

            print(f"  Navigating to {url}...")
            page.goto(url, wait_until="networkidle")  # Wait for network to be idle

            # Target the specific element we want to screenshot
            element = page.locator(".image-container")

            print(f"  Saving screenshot to {output_file}...")
            element.screenshot(path=output_file)

            browser.close()
            print(f"-> Export complete! Image saved to {output_file}")

        except Exception as e:
            print(f"\nAn error occurred during export: {e}")
            print(
                "Please ensure the 'rstat-dashboard' server is running in another terminal."
            )


if __name__ == "__main__":
    # Use a mutually exclusive group to ensure only one mode is chosen
    parser = argparse.ArgumentParser(description="Export subreddit sentiment images.")
    group = parser.add_mutually_exclusive_group(required=True)
    group.add_argument("-s", "--subreddit", help="The name of the subreddit to export.")
    group.add_argument(
        "-o", "--overall", action="store_true", help="Export the overall summary image."
    )

    parser.add_argument(
        "-w",
        "--weekly",
        action="store_true",
        help="Export the weekly view instead of the daily view (only for --subreddit).",
    )
    args = parser.parse_args()

    # Determine the correct URL path and filename based on arguments
    if args.subreddit:
        view_type = "weekly" if args.weekly else "daily"
        # Add ?view=... and the new &image=true parameter
        url_path_to_render = f"subreddit/{args.subreddit}?view={view_type}&image=true"
        filename_prefix_to_save = f"{args.subreddit}_{view_type}"
        export_image(url_path_to_render, filename_prefix_to_save)

    elif args.overall:
        # For overall, we assume daily view for the image
        url_path_to_render = "/?view=daily&image=true"
        filename_prefix_to_save = "overall_summary_daily"
        export_image(url_path_to_render, filename_prefix_to_save)