"""
OCR 模块测试脚本

用法:
    python test_ocr.py --image <图片路径> [--lang ch] [--gpu]
"""

import sys
import argparse
from pathlib import Path

# 添加项目根目录到路径
sys.path.insert(0, str(Path(__file__).parent.parent))

from src.core.ocr import (
    recognize_text,
    preprocess_image,
    PaddleOCREngine,
    CloudOCREngine,
    ImagePreprocessor,
    OCRLanguage
)


def test_ocr_basic(image_path: str, lang: str = "ch", use_gpu: bool = False):
    """测试基本 OCR 识别"""
    print(f"\n{'='*60}")
    print(f"测试基本 OCR 识别")
    print(f"{'='*60}")
    print(f"图片路径: {image_path}")
    print(f"语言: {lang}")
    print(f"GPU: {use_gpu}")

    result = recognize_text(
        image=image_path,
        mode="local",
        lang=lang,
        use_gpu=use_gpu,
        preprocess=False
    )

    print(f"\n识别结果:")
    print(f"  成功: {result.success}")
    print(f"  识别行数: {len(result.results)}")
    print(f"  平均置信度: {result.total_confidence:.2f}")

    if result.success:
        print(f"\n完整文本:")
        print("-" * 60)
        print(result.full_text)
        print("-" * 60)

        # 显示前 5 行详细信息
        print(f"\n前 5 行详细信息:")
        for i, r in enumerate(result.results[:5]):
            print(f"  [{i}] {r.text[:50]}... (置信度: {r.confidence:.2f})")
    else:
        print(f"\n错误: {result.error_message}")


def test_ocr_with_preprocess(image_path: str, lang: str = "ch"):
    """测试带预处理的 OCR 识别"""
    print(f"\n{'='*60}")
    print(f"测试带预处理的 OCR 识别")
    print(f"{'='*60}")

    result = recognize_text(
        image=image_path,
        mode="local",
        lang=lang,
        preprocess=True
    )

    print(f"\n识别结果:")
    print(f"  成功: {result.success}")
    print(f"  识别行数: {len(result.results)}")
    print(f"  平均置信度: {result.total_confidence:.2f}")

    if result.success:
        print(f"\n完整文本:")
        print("-" * 60)
        print(result.full_text)
        print("-" * 60)


def test_preprocess(image_path: str, output_dir: str = None):
    """测试图像预处理功能"""
    print(f"\n{'='*60}")
    print(f"测试图像预处理功能")
    print(f"{'='*60}")

    if output_dir is None:
        output_dir = Path(image_path).parent / "processed"
    else:
        output_dir = Path(output_dir)

    output_dir.mkdir(parents=True, exist_ok=True)

    # 测试不同的预处理组合
    configs = {
        "原始图像": {},
        "调整大小": {"resize": True},
        "增强对比度": {"enhance_contrast": True},
        "增强锐度": {"enhance_sharpness": True},
        "去噪": {"denoise": True},
        "二值化": {"binarize": True},
        "综合增强": {
            "resize": True,
            "enhance_contrast": True,
            "enhance_sharpness": True
        }
    }

    for name, config in configs.items():
        print(f"\n处理: {name}")
        output_path = output_dir / f"{Path(image_path).stem}_{name.replace(' ', '_')}.jpg"

        try:
            processed = preprocess_image(
                image_path,
                output_path=str(output_path),
                **config
            )
            print(f"  保存到: {output_path}")
            print(f"  尺寸: {processed.size}")
        except Exception as e:
            print(f"  失败: {e}")


def test_engine_directly():
    """测试直接使用引擎"""
    print(f"\n{'='*60}")
    print(f"测试直接使用 OCR 引擎")
    print(f"{'='*60}")

    # 创建 PaddleOCR 引擎
    config = {
        'lang': 'ch',
        'use_gpu': False,
        'show_log': False
    }

    print(f"\n创建 PaddleOCR 引擎...")
    engine = PaddleOCREngine(config)
    print(f"引擎类型: {type(engine).__name__}")


def main():
    parser = argparse.ArgumentParser(description="OCR 模块测试")
    parser.add_argument('--image', type=str, help='图片路径')
    parser.add_argument('--lang', type=str, default='ch', help='语言 (ch/en/chinese_chinese)')
    parser.add_argument('--gpu', action='store_true', help='使用 GPU')
    parser.add_argument('--preprocess-only', action='store_true', help='仅测试预处理')
    parser.add_argument('--engine-only', action='store_true', help='仅测试引擎创建')

    args = parser.parse_args()

    # 测试引擎创建
    test_engine_directly()

    # 如果指定了图片
    if args.image:
        if not Path(args.image).exists():
            print(f"\n错误: 图片不存在: {args.image}")
            return

        if args.preprocess_only:
            # 仅测试预处理
            test_preprocess(args.image)
        else:
            # 测试基本 OCR
            test_ocr_basic(args.image, args.lang, args.gpu)

            # 测试带预处理的 OCR
            test_ocr_with_preprocess(args.image, args.lang)

            # 测试预处理功能
            test_preprocess(args.image)
    else:
        print("\n提示: 使用 --image <图片路径> 来测试 OCR 识别功能")
        print("示例: python test_ocr.py --image /path/to/image.png")


if __name__ == '__main__':
    main()