import json
import shutil


def generate_view_code(view):
    module = view['module']
    view_name = view['name']
    view_func = view['name'] + '_view'
    template = view['template']
    model = view['model']
    filter_order = view['filter_order']
    form_action_url = view['form_action_url']

    filters = view['filters']
    breadcrumb_list = view['breadcrumb_list']
    table_columns = view['table_columns']
    show_modify_button = view['show_modify_button']
    show_add_button = view['show_add_button']
    show_download_button = view['show_download_button']
    show_upload_button = view['show_upload_button']

    filter_conditions = "\n    ".join([
        f"if request.GET.get('{f['name']}', ''):\n        query_set = query_set.filter({f['name']}__icontains=request.GET.get('{f['name']}', ''))"
        for f in filters])
    query_params_assignments = "\n    ".join([f"{f['name']} = request.GET.get('{f['name']}', '')" for f in filters])
    query_params_string = " + ".join([f"'&{f['name']}={{}}' + format({f['name']})" for f in filters])

    view_code = f"""
def {view_func}(request):
    # 声明查询集
    query_set = {model}.objects.filter().order_by('-{filter_order}')

    # 获取查询参数
    {query_params_assignments}

    # 根据提供的参数进行筛选
    {filter_conditions}

    # 对查询结果进行分页，每页10条记录
    items = paginate_query_and_assign_numbers(
        request=request,
        queryset=query_set,
        per_page=10
    )

    # 构建上下文查询参数字符串
    query_params = {query_params_string}

    # 准备上下文
    context = {{
        'items': items,
        'filters': {json.dumps(filters, ensure_ascii=False)},
        'form_action_url': '{form_action_url}',
        'breadcrumb_list': {json.dumps(breadcrumb_list, ensure_ascii=False)},
        'query_params': query_params,
        'table_columns': {json.dumps(table_columns, ensure_ascii=False)},
        'show_modify_button': {show_modify_button},
        'show_add_button': {show_add_button},
        'show_download_button': {show_download_button},
        'show_upload_button': {show_upload_button},
    }}

    return render(request, '{module}/{template}', context)
"""
    return view_code


def copy_template(path):
    source_html = 'comom_list.html'  # 修改为实际模板文件路径
    destination_html = path

    shutil.copy(source_html, destination_html)


def add_url_pattern(view):
    view_name = view['name']
    urls_path = view['urls_path']
    view_def = view['name'] + '_view'
    url_pattern = f"    path('{view_name}/', {view_def}, name='{view_name}'),\n"

    with open(urls_path, 'r', encoding='utf-8') as file:
        content = file.readlines()

    for index, line in enumerate(content):
        if line.strip() == "urlpatterns = [":
            content.insert(index + 1, url_pattern)
            break

    with open(urls_path, 'w', encoding='utf-8') as file:
        file.writelines(content)


def main_func():
    config_file = 'config.json'
    with open(config_file, 'r', encoding='utf-8') as file:
        config = json.load(file)

    content = ['asset_mgnt', 'pjt_mgnt']
    for key, value in config.items():
        if key in content:
            for view in value:
                view_code = generate_view_code(view)
                insert_file_path = view['insert_file_path']

                with open(insert_file_path, 'a', encoding='utf-8') as file:
                    file.write(view_code)

                # Copy template file and rename
                html_file_path = view.get('html_file_path')
                copy_template(html_file_path)
                add_url_pattern(view)


if __name__ == '__main__':
    main_func()