#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Simple test to check if PaddleOCRVL wrapper is working.
"""

import sys
import time
from pathlib import Path
import multiprocessing

# Module-level wrapper function (required for Windows multiprocessing)
def _run_ocr_vl_wrapper(image_path, result_queue):
    """Wrapper function to run PaddleOCRVL in a subprocess."""
    try:
        # Helper to print to console
        def log(msg):
            print(f"[Subprocess] {msg}")
            sys.stdout.flush()

        log("Starting...")

        from paddleocr import PaddleOCRVL

        log("Import successful, initializing pipeline...")

        # Re-initialize pipeline in subprocess (required)
        vl_pipeline = PaddleOCRVL(
            use_seal_recognition=True,
            use_ocr_for_image_block=True,
            use_layout_detection=True
        )

        log("Pipeline initialized, starting prediction...")

        start_time = time.time()
        output = vl_pipeline.predict(image_path, batch_size=1)
        elapsed = time.time() - start_time

        log(f"Prediction completed in {elapsed:.1f}s, output length: {len(output) if output else 0}")

        if output and len(output) > 0:
            res = output[0]

            # Save to JSON
            import json
            temp_output_dir = Path("temp_paddleocr_vl_test")
            temp_output_dir.mkdir(exist_ok=True)

            res.save_to_json(save_path=str(temp_output_dir))

            json_file = temp_output_dir / f"{Path(image_path).stem}_res.json"

            log(f"Looking for JSON: {json_file}")

            if json_file.exists():
                log("JSON found, reading...")
                with open(json_file, 'r', encoding='utf-8') as f:
                    data = json.load(f)

                blocks = data.get('parsing_res_list', [])
                log(f"Found {len(blocks)} blocks")

                for i, block in enumerate(blocks):
                    label = block.get('block_label', 'unknown')
                    content = block.get('block_content', '')
                    log(f"  Block {i}: {label} - '{content[:50] if content else '(empty)'}...'")

                    if label == 'seal':
                        text = content.strip()
                        log(f"  *** SEAL FOUND: '{text}' ***")

                        # Clean up
                        import shutil
                        if temp_output_dir.exists():
                            shutil.rmtree(temp_output_dir, ignore_errors=True)

                        result_queue.put({
                            'text': text,
                            'success': len(text) > 0
                        })
                        return

            log("No seal block found")
            result_queue.put({'text': '', 'success': False, 'debug': 'no_seal'})
        else:
            log("No output from predict()")
            result_queue.put({'text': '', 'success': False, 'debug': 'no_output'})

    except Exception as e:
        import traceback
        log(f"ERROR: {e}")
        log(f"Traceback:\n{traceback.format_exc()}")
        result_queue.put({
            'text': '',
            'success': False,
            'error': str(e)
        })


def test():
    print("Testing PaddleOCRVL with existing seal image...")

    # Find a seal image
    seal_image = Path("test_reports_full/1.pdf/seal_crop_0.png")
    if not seal_image.exists():
        print(f"Seal image not found: {seal_image}")
        return False

    print(f"Using image: {seal_image}")
    print(f"Image size: {seal_image.stat().st_size} bytes")

    # Run the test
    result_queue = multiprocessing.Queue()

    print("Starting subprocess...")
    process = multiprocessing.Process(
        target=_run_ocr_vl_wrapper,
        args=(str(seal_image), result_queue)
    )

    start_time = time.time()
    process.start()

    # Wait up to 120 seconds
    process.join(timeout=120)
    elapsed = time.time() - start_time

    print(f"Process completed in {elapsed:.1f}s")

    if process.is_alive():
        print("TIMEOUT: Process still running, terminating...")
        process.terminate()
        process.join(timeout=5)
        if process.is_alive():
            process.kill()
        print("Process terminated")
        return False

    # Get result
    if not result_queue.empty():
        result = result_queue.get_nowait()
        print(f"\nResult:")
        print(f"  Text: '{result.get('text', '')}'")
        print(f"  Success: {result.get('success', False)}")
        if result.get('error'):
            print(f"  Error: {result.get('error')}")
        if result.get('debug'):
            print(f"  Debug: {result.get('debug')}")
        return result.get('success', False) and len(result.get('text', '')) > 0
    else:
        print("No result returned from process")
        return False


if __name__ == "__main__":
    success = test()
    print("\n" + "=" * 60)
    if success:
        print("SUCCESS: PaddleOCRVL is working!")
        sys.exit(0)
    else:
        print("FAILED: PaddleOCRVL test failed")
        sys.exit(1)