import base64
import json
import os
import time
import zipfile
from pathlib import Path
import re
import uuid
import pymupdf

os.system('pip uninstall -y magic-pdf')
os.system('pip install git+https://github.com/opendatalab/MinerU.git@dev')

os.system('wget https://github.com/opendatalab/MinerU/raw/dev/scripts/download_models_hf.py -O download_models_hf.py')
os.system('python download_models_hf.py')

with open('/home/user/magic-pdf.json', 'r') as file:
    data = json.load(file)

data['device-mode'] = "cuda"
if os.getenv('apikey'):
    data['llm-aided-config']['title_aided']['api_key'] = os.getenv('apikey')
    data['llm-aided-config']['title_aided']['enable'] = True

with open('/home/user/magic-pdf.json', 'w') as file:
    json.dump(data, file, indent=4)

os.system('cp -r paddleocr /home/user/.paddleocr')
from gradio_pdf import PDF

import gradio as gr
from loguru import logger

from magic_pdf.data.data_reader_writer import FileBasedDataReader
from magic_pdf.libs.hash_utils import compute_sha256
from magic_pdf.tools.common import do_parse, prepare_env

def create_css():
    return """
    /* 전체 스타일 */
    .gradio-container {
        background: linear-gradient(135deg, #EFF6FF 0%, #F5F3FF 100%);
        max-width: 1200px !important;
        margin: 0 auto !important;
        padding: 2rem !important;
    }
    /* 제목 스타일 */
    .title-area {
        text-align: center;
        margin-bottom: 2rem;
        padding: 1rem;
        background: white;
        border-radius: 1rem;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    }
    .title-area h1 {
        background: linear-gradient(90deg, #2563EB 0%, #7C3AED 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        font-size: 2.5rem;
        font-weight: bold;
        margin-bottom: 0.5rem;
    }
    .title-area p {
        color: #6B7280;
        font-size: 1.1rem;
    }
    /* 컴포넌트 스타일링 */
    .gr-box, .gr-panel {
        border: 2px solid #E0E7FF !important;
        border-radius: 12px !important;
        box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1) !important;
        background: white !important;
    }
    /* 파일 업로드 영역 */
    .file-upload {
        border: 2px dashed #93C5FD !important;
        border-radius: 8px !important;
        padding: 2rem !important;
        background: #F0F9FF !important;
        transition: all 0.3s ease;
    }
    .file-upload:hover {
        background: #E0F2FE !important;
        border-color: #60A5FA !important;
    }
    /* 버튼 스타일링 */
    .gr-button.primary-button {
        background: linear-gradient(90deg, #2563EB 0%, #7C3AED 100%) !important;
        color: white !important;
        border: none !important;
        border-radius: 8px !important;
        padding: 0.75rem 1.5rem !important;
        font-weight: bold !important;
        transition: opacity 0.2s !important;
    }
    .gr-button.primary-button:hover {
        opacity: 0.9 !important;
    }
    .gr-button.secondary-button {
        background: white !important;
        color: #4B5563 !important;
        border: 1px solid #D1D5DB !important;
        border-radius: 8px !important;
        padding: 0.75rem 1.5rem !important;
    }
    .gr-button.secondary-button:hover {
        background: #F9FAFB !important;
    }
    /* 슬라이더 스타일링 */
    .gr-slider {
        background: #E0E7FF !important;
    }
    .gr-slider .gr-slider-handle {
        background: #4F46E5 !important;
    }
    /* 체크박스 스타일링 */
    .gr-checkbox {
        border-color: #6366F1 !important;
    }
    .gr-checkbox:checked {
        background-color: #4F46E5 !important;
    }
    /* 탭 스타일링 */
    .gr-tabs {
        border-bottom: 2px solid #E0E7FF !important;
    }
    .gr-tab-button {
        color: #6B7280 !important;
        padding: 0.75rem 1rem !important;
        font-weight: 500 !important;
    }
    .gr-tab-button.selected {
        color: #4F46E5 !important;
        border-bottom: 2px solid #4F46E5 !important;
    }
    /* 마크다운 출력 영역 */
    .markdown-output {
        background: white !important;
        border-radius: 8px !important;
        padding: 1rem !important;
        box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05) !important;
    }
    """

def read_fn(path):
    disk_rw = FileBasedDataReader(os.path.dirname(path))
    return disk_rw.read(os.path.basename(path))

def parse_pdf(doc_path, output_dir, end_page_id, is_ocr, layout_mode, formula_enable, table_enable, language):
    os.makedirs(output_dir, exist_ok=True)

    try:
        file_name = f"{str(Path(doc_path).stem)}_{time.time()}"
        pdf_data = read_fn(doc_path)
        if is_ocr:
            parse_method = "ocr"
        else:
            parse_method = "auto"
        local_image_dir, local_md_dir = prepare_env(output_dir, file_name, parse_method)
        do_parse(
            output_dir,
            file_name,
            pdf_data,
            [],
            parse_method,
            False,
            end_page_id=end_page_id,
            layout_model=layout_mode,
            formula_enable=formula_enable,
            table_enable=table_enable,
            lang=language,
            f_dump_orig_pdf=False,
        )
        return local_md_dir, file_name
    except Exception as e:
        logger.exception(e)

def compress_directory_to_zip(directory_path, output_zip_path):
    try:
        with zipfile.ZipFile(output_zip_path, 'w', zipfile.ZIP_DEFLATED) as zipf:
            for root, dirs, files in os.walk(directory_path):
                for file in files:
                    file_path = os.path.join(root, file)
                    arcname = os.path.relpath(file_path, directory_path)
                    zipf.write(file_path, arcname)
        return 0
    except Exception as e:
        logger.exception(e)
        return -1

def image_to_base64(image_path):
    with open(image_path, "rb") as image_file:
        return base64.b64encode(image_file.read()).decode('utf-8')

def replace_image_with_base64(markdown_text, image_dir_path):
    pattern = r'\!\[(?:[^\]]*)\]\(([^)]+)\)'
    def replace(match):
        relative_path = match.group(1)
        full_path = os.path.join(image_dir_path, relative_path)
        base64_image = image_to_base64(full_path)
        return f"![{relative_path}](data:image/jpeg;base64,{base64_image})"
    return re.sub(pattern, replace, markdown_text)

def to_markdown(file_path, end_pages, is_ocr, layout_mode, formula_enable, table_enable, language):
    file_path = to_pdf(file_path)
    if end_pages > 20:
        end_pages = 20
    local_md_dir, file_name = parse_pdf(file_path, './output', end_pages - 1, is_ocr,
                                      layout_mode, formula_enable, table_enable, language)
    archive_zip_path = os.path.join("./output", compute_sha256(local_md_dir) + ".zip")
    zip_archive_success = compress_directory_to_zip(local_md_dir, archive_zip_path)
    if zip_archive_success == 0:
        logger.info("압축 성공")
    else:
        logger.error("압축 실패")
    md_path = os.path.join(local_md_dir, file_name + ".md")
    with open(md_path, 'r', encoding='utf-8') as f:
        txt_content = f.read()
    md_content = replace_image_with_base64(txt_content, local_md_dir)
    new_pdf_path = os.path.join(local_md_dir, file_name + "_layout.pdf")
    return md_content, txt_content, archive_zip_path, new_pdf_path

def to_pdf(file_path):
    with pymupdf.open(file_path) as f:
        if f.is_pdf:
            return file_path
        else:
            pdf_bytes = f.convert_to_pdf()
            unique_filename = f"{uuid.uuid4()}.pdf"
            tmp_file_path = os.path.join(os.path.dirname(file_path), unique_filename)
            with open(tmp_file_path, 'wb') as tmp_pdf_file:
                tmp_pdf_file.write(pdf_bytes)
            return tmp_file_path

latex_delimiters = [{"left": "$$", "right": "$$", "display": True},
                   {"left": '$', "right": '$', "display": False}]

def init_model():
    from magic_pdf.model.doc_analyze_by_custom_model import ModelSingleton
    try:
        model_manager = ModelSingleton()
        txt_model = model_manager.get_model(False, False)
        logger.info(f"txt_model init final")
        ocr_model = model_manager.get_model(True, False)
        logger.info(f"ocr_model init final")
        return 0
    except Exception as e:
        logger.exception(e)
        return -1

model_init = init_model()
logger.info(f"model_init: {model_init}")

latin_lang = [
    'af', 'az', 'bs', 'cs', 'cy', 'da', 'de', 'es', 'et', 'fr', 'ga', 'hr',
    'hu', 'id', 'is', 'it', 'ku', 'la', 'lt', 'lv', 'mi', 'ms', 'mt', 'nl',
    'no', 'oc', 'pi', 'pl', 'pt', 'ro', 'rs_latin', 'sk', 'sl', 'sq', 'sv',
    'sw', 'tl', 'tr', 'uz', 'vi', 'french', 'german'
]
arabic_lang = ['ar', 'fa', 'ug', 'ur']
cyrillic_lang = [
    'ru', 'rs_cyrillic', 'be', 'bg', 'uk', 'mn', 'abq', 'ady', 'kbd', 'ava',
    'dar', 'inh', 'che', 'lbe', 'lez', 'tab'
]
devanagari_lang = [
    'hi', 'mr', 'ne', 'bh', 'mai', 'ang', 'bho', 'mah', 'sck', 'new', 'gom',
    'sa', 'bgc'
]
other_lang = ['ch', 'en', 'korean', 'japan', 'chinese_cht', 'ta', 'te', 'ka']

all_lang = ['', 'auto']
all_lang.extend([*other_lang, *latin_lang, *arabic_lang, *cyrillic_lang, *devanagari_lang])

if __name__ == "__main__":
    with gr.Blocks(title="OCR FLEX", css=create_css()) as demo:
        # 타이틀 영역
        with gr.Row(elem_classes="title-area"):
            gr.HTML("""
                <h1>OCR FLEX</h1>
                <p>PDF와 이미지에서 텍스트를 빠르고 정확하게 추출하세요</p>
            """)

        with gr.Row():
            # 왼쪽 패널
            with gr.Column(variant='panel', scale=5):
                file = gr.File(
                    label="PDF 또는 이미지 파일을 업로드하세요",
                    file_types=[".pdf", ".png", ".jpeg", ".jpg"],
                    elem_classes="file-upload"
                )
                
                max_pages = gr.Slider(
                    1, 20, 10,
                    step=1,
                    label='최대 변환 페이지 수',
                    elem_classes="custom-slider"
                )
                
                with gr.Row():
                    layout_mode = gr.Dropdown(
                        ["layoutlmv3", "doclayout_yolo"],
                        label="레이아웃 모델",
                        value="doclayout_yolo",
                        elem_classes="custom-dropdown"
                    )
                    language = gr.Dropdown(
                        all_lang,
                        label="언어",
                        value='auto',
                        elem_classes="custom-dropdown"
                    )
                
                with gr.Row():
                    formula_enable = gr.Checkbox(
                        label="수식 인식 활성화",
                        value=True,
                        elem_classes="custom-checkbox"
                    )
                    is_ocr = gr.Checkbox(
                        label="OCR 강제 활성화",
                        value=False,
                        elem_classes="custom-checkbox"
                    )
                    table_enable = gr.Checkbox(
                        label="표 인식 활성화(테스트)",
                        value=True,
                        elem_classes="custom-checkbox"
                    )
                
                with gr.Row():
                    change_bu = gr.Button(
                        "변환",
                        elem_classes="primary-button"
                    )
                    clear_bu = gr.ClearButton(
                        value="초기화",
                        elem_classes="secondary-button"
                    )
                
                pdf_show = PDF(
                    label='PDF 미리보기',
                    interactive=False,
                    visible=True,
                    height=800,
                    elem_classes="pdf-preview"
                )
                
                with gr.Accordion("예제:", open=False):
                    example_root = os.path.join(os.path.dirname(__file__), "examples")
                    gr.Examples(
                        examples=[os.path.join(example_root, _) for _ in os.listdir(example_root) if
                                _.endswith("pdf")],
                        inputs=file
                    )

            # 오른쪽 패널
            with gr.Column(variant='panel', scale=5):
                output_file = gr.File(
                    label="변환 결과",
                    interactive=False,
                    elem_classes="output-file"
                )
                
                with gr.Tabs() as tabs:
                    with gr.Tab("마크다운 렌더링"):
                        md = gr.Markdown(
                            label="마크다운 렌더링",
                            height=1100,
                            show_copy_button=True,
                            latex_delimiters=latex_delimiters,
                            line_breaks=True,
                            elem_classes="markdown-output"
                        )
                    
                    with gr.Tab("마크다운 텍스트"):
                        md_text = gr.TextArea(
                            lines=45,
                            show_copy_button=True,
                            elem_classes="markdown-text"
                        )
        
        # 이벤트 핸들러
        file.change(
            fn=to_pdf,
            inputs=file,
            outputs=pdf_show
        )
        
        change_bu.click(
            fn=to_markdown,
            inputs=[
                file,
                max_pages,
                is_ocr,
                layout_mode,
                formula_enable,
                table_enable,
                language
            ],
            outputs=[
                md,
                md_text,
                output_file,
                pdf_show
            ],
            api_name=False
        )
        
        clear_bu.add([file, md, pdf_show, md_text, output_file, is_ocr])

    # 앱 실행
    demo.launch(ssr_mode=True)