import gradio as gr
from datetime import datetime
import pandas as pd

def create_assignment_ui(user_data, assignment_service, submission_service, dashboard_service):
    with gr.Blocks() as assignment_interface:
        with gr.Tab("老師|建立作業"):
            with gr.Row():
                with gr.Column():
                    with gr.Row():
                        gr.Markdown("### 作業資訊")
                    with gr.Row():
                        assignment_topic = gr.Textbox(label="題目（必填）")
                        assignment_type_list = [
                            "中文寫作 AI 批改",
                            "英文寫作 AI 批改"
                        ]
                        assignment_type = gr.Radio(choices=assignment_type_list, label="選擇類型", value="中文寫作 AI 批改")
                        assignment_grade = gr.Radio(["一年級", "二年級", "三年級", "四年級", "五年級", "六年級"], label="選擇年級", visible=False)
                    with gr.Row():
                        gr.Markdown("### 內容規範")
                    with gr.Row():
                        assignment_introduction = gr.TextArea(label="寫作引文")
                        assignment_description = gr.TextArea(label="作業說明")
                    with gr.Row():
                        gr.Markdown("### 繳交規範")
                    with gr.Row():
                        assignment_submission_deadline = gr.DateTime(label="提交截止日期", value=None)
                        assignment_attach_materials = gr.Textbox(label="附件參考", placeholder='[{"type": "video", "url": "link1", "description": "描述"}]', visible=False)
                    with gr.Row():
                        assignment_create_button = gr.Button("建立作業")
                        assignment_metadata = gr.JSON(label="作業元數據", visible=False)
                        assignment_data = gr.JSON(label="作業數據", visible=False)
                        assignment_url = gr.Textbox(label="作業指派連結", interactive=False, show_copy_button=True)
                        assignment_id_display_teacher = gr.Textbox(label="作業 ID", interactive=False, visible=False)
                        
                    
                    def update_gr_assignment_url(assignment_data):
                        return assignment_data['assignment_url']
                    
                    def update_gr_assignment_id(assignment_data):
                        return assignment_data['assignment_id']

                    def disable_btn():
                        return gr.update(interactive=False)
                    
                    def enable_btn():
                        return gr.update(interactive=True)

                    assignment_create_button.click(
                        fn=disable_btn,
                        inputs=[],
                        outputs=[assignment_create_button]
                    ).then(
                        assignment_service.create_assignment_metadata,
                        inputs=[
                            assignment_type, 
                            assignment_grade, 
                            assignment_topic, 
                            assignment_introduction, 
                            assignment_description, 
                            assignment_attach_materials, 
                            assignment_submission_deadline
                        ],
                        outputs=[assignment_metadata]
                    ).then(
                        assignment_service.create_assignment,
                        inputs=[user_data, assignment_type, assignment_metadata],
                        outputs=[assignment_data]
                    ).then(
                        update_gr_assignment_url,
                        inputs=[assignment_data],
                        outputs=[assignment_url]
                    ).then(
                        update_gr_assignment_id,
                        inputs=[assignment_data],
                        outputs=[assignment_id_display_teacher]
                    ).then(
                        # enable
                        fn=enable_btn,
                        inputs=[],
                        outputs=[assignment_create_button]
                    )
        
        with gr.Tab("老師｜作業列表") as assignment_list_tab:
            with gr.Row():
                with gr.Column(scale=1):
                    get_all_assignments_button = gr.Button("獲取所有作業")
                    assignment_list = gr.Radio([], label="作業列表", interactive=True)
                with gr.Column(scale=2):
                    assignment_data = gr.JSON(label="作業內容", visible=False)
                    assignment_data_html = gr.HTML()
                    delete_assignment_button = gr.Button("刪除此作業", visible=False, variant="stop")
                    with gr.Row(visible=False) as check_delete_confirmation_row:
                        delete_assignment_execute_button = gr.Button(visible=True, value="⚠️ 警告：刪除作業將永久移除此作業相關數據。請將確認框打勾即可點擊刪除。", interactive=False)
                        delete_confirm = gr.Checkbox(label="我確認要刪除這個作業", visible=True)
                        delete_warning = gr.Markdown(visible=True)

                    def show_delete_confirmation():
                        check_delete_confirmation_row = gr.update(visible=True)
                        return check_delete_confirmation_row

                    def init_check_delete_confirmation_row():
                        check_delete_confirmation_row = gr.update(visible=False)
                        delete_confirm = gr.update(value=False)
                        delete_warning = gr.update(value="")
                        return check_delete_confirmation_row, delete_confirm, delete_warning

                    def check_delete_confirmation(confirmed):
                        if confirmed:
                            delete_assignment_execute_button = gr.update(interactive=True)                            
                        else:
                            delete_assignment_execute_button = gr.update(interactive=False)
                        
                        return delete_assignment_execute_button

                    def delete_assignment(assignment_id, user_data):
                        success = assignment_service.delete_assignment(assignment_id, user_data)
                        if success:
                            return gr.update(value="作業已成功刪除"), gr.update(value=None), gr.update(value=None), gr.update(choices=[]), gr.update(value=None), gr.update(value=None)
                        else:
                            return gr.update(value="刪除作業失敗，請稍後再試"), gr.update(), gr.update(), gr.update(), gr.update(), gr.update()

            with gr.Row():
                with gr.Column(scale=1):
                    submissions_list_json = gr.JSON(visible=False)
                    submissions_list_radio = gr.Radio([], label="已提交的作業學生", interactive=True)
                with gr.Column(scale=2):
                    submission_data_json = gr.JSON(label="提交內容", visible=False)
                    submission_data_html = gr.HTML()

            def init_assignment_list_data(assignment_list_value=None):
                assignment_list = gr.update(value=assignment_list_value)
                assignment_data = gr.update(value=None)
                assignment_data_html = gr.update(value=None)
                submissions_list_json = gr.update(value=None)
                submissions_list_radio = gr.update(choices=[], value=None)
                submission_data_json = gr.update(value=None)
                submission_data_html = gr.update(value=None)
                return assignment_list, assignment_data, assignment_data_html, submissions_list_json, submissions_list_radio, submission_data_json, submission_data_html

            def update_assignment_data_html(assignment_data):
                # check metadata in assignment_data
                metadata = assignment_data.get('metadata', {})
                if metadata:
                    # 處理 submission_deadline
                    submission_deadline = assignment_data['metadata'].get('submission_deadline')
                    formatted_deadline = "未設置截止日期"
                else:
                    submission_deadline = None
                    formatted_deadline = "未設置截止日期"
                
                if submission_deadline is not None:
                    try:
                        if isinstance(submission_deadline, (int, float)):
                            # 假設這是個 Unix 時間戳（秒）
                            submission_datetime = datetime.fromtimestamp(submission_deadline)
                        elif isinstance(submission_deadline, str):
                            # 嘗試解析 ISO 格式的字串
                            submission_datetime = datetime.fromisoformat(submission_deadline)
                        else:
                            raise ValueError(f"無效的日期類型: {type(submission_deadline)}")
                        
                        formatted_deadline = submission_datetime.strftime("%Y-%m-%d %H:%M")
                    except ValueError as e:
                        formatted_deadline = f"無效的日期格式: {str(e)}"

                html = f"""
                <div style="background-color: #f8f9fa; padding: 30px; border-radius: 15px; font-family: 'Helvetica', sans-serif;">
                    <h2 style="color: #007bff; font-size: 28px; margin-bottom: 20px;">✨ 作業詳情</h2>
                    <div style="background-color: white; border-radius: 10px; padding: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">🏷️ 作業類型</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['assignment_type']}</div>
                        </div>
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">📝 作業題目</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['metadata']['topic']}</div>
                        </div>
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">🗓️ 日期</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['timestamp']}</div>
                        </div>
                        
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #28a745; margin-bottom: 5px;">📖 寫作引文</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['metadata']['introduction']}</div>
                        </div>
                        
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #ffc107; margin-bottom: 5px;">ℹ️ 作業說明</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['metadata']['description']}</div>
                        </div>
                        
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #17a2b8; margin-bottom: 5px;">🔗 作業連結</div>
                            <a href="{assignment_data['assignment_url']}" target="_blank" style="display: inline-block; padding: 10px 15px; background-color: #007bff; color: white; text-decoration: none; border-radius: 5px; transition: background-color 0.3s;" onmouseover="this.style.backgroundColor='#0056b3'" onmouseout="this.style.backgroundColor='#007bff'">點擊前往作業</a>
                        </div>

                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #17a2b8; margin-bottom: 5px;">🔗 作業截止日期</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{formatted_deadline}</div>
                        </div>
                        
                        <div>
                            <div style="font-weight: bold; color: #dc3545; margin-bottom: 5px;">📎 附加材料</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{assignment_data['metadata']['attach_materials']}</div>
                        </div>
                    </div>
                </div>
                """
                return gr.update(value=html)

            def show_button():
                return gr.update(visible=True)

            def hide_button():
                return gr.update(visible=False)

            def update_submissions_list_radio(submission_ids):
                choices = []
                for submission_id in submission_ids:
                    submission_data = submission_service.get_submission_from_gcs(submission_id)
                    choice_text = f"{submission_data['student_name']}"
                    choice = (choice_text, submission_id)
                    choices.append(choice)
                return gr.update(choices=choices)
            
            def generate_submission_html(submission_json):
                html_parts = []
                
                html_parts.append(generate_student_info_html(submission_json))
                
                submission_data = submission_json.get('submission_data', {})
                content = submission_data.get('content', {})
                content_type = content.get('content_type', '')

                if content_type == 'chinese_full_paragraph_evaluation':
                    html_parts.append(generate_chinese_full_paragraph_html(content))
                elif content_type == 'english_full_paragraph_evaluation':
                    html_parts.append(generate_english_full_paragraph_html(content))
                else:
                    html_parts.append("<p>不支持的内容类型</p>")
                
                # 添加外层结构的结束标签
                html_parts.append("""
                    </div>
                </div>
                """)
                
                return ''.join(html_parts)

            def generate_student_info_html(submission_json):
                return f"""
                <details>
                    <summary style="cursor: pointer; font-weight: bold; color: #6c757d; padding: 10px; background-color: #e9ecef; border-radius: 5px;">學生資訊</summary>
                    <div style="margin-top: 10px;">
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">👤 學生姓名</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">
                                {submission_json.get('student_name', '未提供')}
                            </div>
                        </div>
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">📧 學生Email</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">
                                {submission_json.get('student_email', '未提供')}
                            </div>
                        </div>
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">🆔 學生ID</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">
                                {submission_json.get('student_id', '未提供')}
                            </div>
                        </div>
                        <div style="margin-bottom: 20px;">
                            <div style="font-weight: bold; color: #6c757d; margin-bottom: 5px;">🕒 繳交時間</div>
                            <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px;">{submission_json.get('timestamp', '未提供')}</div>
                        </div>
                    </div>
                </details>
                """

            def generate_chinese_full_paragraph_html(content):
                html_parts = []
                
                html_parts.append("""
                    <details open>
                        <summary style="cursor: pointer; font-weight: bold; color: #28a745; padding: 10px; background-color: #e9ecef; border-radius: 5px; margin-top: 20px;">原文評估</summary>
                        <div style="margin-top: 10px;">
                """)

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #28a745; margin-bottom: 5px;">📄 輸入段落全文</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_input', '未提供')}</div>
                            </div>
                            
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #17a2b8; margin-bottom: 5px;">📊 段落全文分析</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_evaluate_output_text', '未提供')}</div>
                            </div>
                """)

                if 'chinese_full_paragraph_evaluate_output_table' in content:
                    html_parts.append(generate_table_html(content['chinese_full_paragraph_evaluate_output_table'], "📊 評分结果", "#dc3545"))

                html_parts.append("""
                        </div>
                    </details>
                    
                    <details>
                        <summary style="cursor: pointer; font-weight: bold; color: #6610f2; padding: 10px; background-color: #e9ecef; border-radius: 5px; margin-top: 20px;">第二次修改</summary>
                        <div style="margin-top: 10px;">
                """)

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #6610f2; margin-bottom: 5px;">🔄 段落改善建议 輸入</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_refine_input', '未提供')}</div>
                            </div>
                            
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #fd7e14; margin-bottom: 5px;">🔄 段落改善建議</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_refine_output_text', '未提供')}</div>
                            </div>
                """)

                if 'chinese_full_paragraph_refine_output_table' in content:
                    html_parts.append(generate_table_html(content['chinese_full_paragraph_refine_output_table'], "📊 修改後評分", "#20c997"))

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #20c997; margin-bottom: 5px;">📝 修改结果</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('chinese_full_paragraph_save_output', '未提供')}</div>
                            </div>
                        </div>
                    </details>
                """)

                return ''.join(html_parts)

            def generate_english_full_paragraph_html(content):
                html_parts = []
                
                html_parts.append("""
                    <details open>
                        <summary style="cursor: pointer; font-weight: bold; color: #28a745; padding: 10px; background-color: #e9ecef; border-radius: 5px; margin-top: 20px;">原文</summary>
                        <div style="margin-top: 10px;">
                """)

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #28a745; margin-bottom: 5px;">📄 輸入段落全文</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('full_paragraph_input', '未提供')}</div>
                            </div>
                """)

                if 'full_paragraph_evaluate_output' in content:
                    html_parts.append(generate_table_html(content['full_paragraph_evaluate_output'], "📊 評分結果", "#dc3545"))

                html_parts.append("""
                        </div>
                    </details>
                    
                    <details>
                        <summary style="cursor: pointer; font-weight: bold; color: #6610f2; padding: 10px; background-color: #e9ecef; border-radius: 5px; margin-top: 20px;">修訂結果</summary>
                        <div style="margin-top: 10px;">
                """)

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #6610f2; margin-bottom: 5px;">🔄 修訂文法與拼字錯誤 輸入</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('full_paragraph_correct_grammatical_spelling_errors_input', '未提供')}</div>
                            </div>
                """)

                if 'full_paragraph_correct_grammatical_spelling_errors_output_table' in content:
                    html_parts.append(generate_table_html(content['full_paragraph_correct_grammatical_spelling_errors_output_table'], "📊 修訂文法與拼字錯誤", "#20c997"))

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #6610f2; margin-bottom: 5px;">🔄 段落改善建議 輸入</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('full_paragraph_refine_input', '未提供')}</div>
                            </div>
                """)

                if 'full_paragraph_refine_output_table' in content:
                    html_parts.append(generate_table_html(content['full_paragraph_refine_output_table'], "📊 段落改善建議", "#20c997"))

                html_parts.append(f"""
                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #fd7e14; margin-bottom: 5px;">🔄 修改建議</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('full_paragraph_refine_output', '未提供')}</div>
                            </div>

                            <div style="margin-bottom: 20px;">
                                <div style="font-weight: bold; color: #20c997; margin-bottom: 5px;">📝 修改結果</div>
                                <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; white-space: pre-wrap;">{content.get('full_paragraph_save_output', '未提供')}</div>
                            </div>
                        </div>
                    </details>
                """)

                return ''.join(html_parts)

            def generate_table_html(table_data, title, color):
                if not table_data or not isinstance(table_data, list):
                    return ""

                html_parts = []
                
                html_parts.append(f"""
                    <div style="margin-bottom: 20px;">
                        <div style="font-weight: bold; color: {color}; margin-bottom: 5px;">{title}</div>
                        <div style="background-color: #f8f9fa; padding: 10px 15px; border-radius: 5px; overflow-x: auto;">
                            <table style="width: 100%; border-collapse: collapse; white-space: nowrap;">
                                <tr style="background-color: #e9ecef;">
                """)

                # 动态生成表头
                headers = table_data[0].keys()
                for header in headers:
                    if header.lower() == '評分' or header.lower() == 'score':
                        html_parts.append(f'<th style="padding: 10px; border: 1px solid #dee2e6; min-width: 80px;">{header}</th>')
                    else:
                        html_parts.append(f'<th style="padding: 10px; border: 1px solid #dee2e6;">{header}</th>')
                html_parts.append('</tr>')

                # 动态生成表格内容
                for item in table_data:
                    html_parts.append('<tr>')
                    for key, value in item.items():
                        if key.lower() == '評分' or key.lower() == 'score':
                            html_parts.append(f'<td style="padding: 10px; border: 1px solid #dee2e6; min-width: 80px; text-align: center;">{value}</td>')
                        else:
                            html_parts.append(f'<td style="padding: 10px; border: 1px solid #dee2e6;">{value}</td>')
                    html_parts.append('</tr>')

                html_parts.append("""
                            </table>
                        </div>
                    </div>
                """)
                return ''.join(html_parts)

            def update_submission_data_html(submission_json):
                html = generate_submission_html(submission_json)
                return gr.update(value=html)

            get_all_assignments_button.click(
                assignment_service.update_assignment_list,
                inputs=[user_data],
                outputs=assignment_list
            ).then(
                fn=init_assignment_list_data,
                inputs=[],
                outputs=[assignment_list, assignment_data, assignment_data_html, submissions_list_json, submissions_list_radio, submission_data_json, submission_data_html]
            ).then(
                fn=hide_button,
                inputs=[],
                outputs=[delete_assignment_button]
            )

            assignment_list.select(
                fn=init_assignment_list_data,
                inputs=[assignment_list],
                outputs=[assignment_list, assignment_data, assignment_data_html, submissions_list_json, submissions_list_radio, submission_data_json, submission_data_html]
            ).then(
                assignment_service.get_assignment,
                inputs=[assignment_list],
                outputs=[assignment_data]
            ).then(
                fn=update_assignment_data_html,
                inputs=[assignment_data],
                outputs=[assignment_data_html]
            ).then(
                assignment_service.get_assignment_submissions,
                inputs=[assignment_list],
                outputs=[submissions_list_json]
            ).then(
                fn=update_submissions_list_radio,
                inputs=[submissions_list_json],
                outputs=[submissions_list_radio]
            ).then(
                fn=show_button,
                inputs=[],
                outputs=[delete_assignment_button]
            )

            submissions_list_radio.select(
                submission_service.get_submission_from_gcs,
                inputs=[submissions_list_radio],
                outputs=submission_data_json
            ).then(
                fn=update_submission_data_html,
                inputs=[submission_data_json],
                outputs=[submission_data_html]
            )

            delete_assignment_button.click(
                fn=hide_button,
                inputs=[],
                outputs=[delete_assignment_button]
            ).then(
                fn=show_delete_confirmation,
                inputs=[],
                outputs=[check_delete_confirmation_row]
            )

            delete_confirm.change(
                fn=check_delete_confirmation,
                inputs=[delete_confirm],
                outputs=[delete_assignment_execute_button]
            )

            delete_assignment_execute_button.click(
                fn=delete_assignment,
                inputs=[assignment_list, user_data],
                outputs=[assignment_data_html, assignment_data, submissions_list_json, submissions_list_radio, submission_data_json, submission_data_html]
            ).then(
                fn=init_check_delete_confirmation_row,
                inputs=[],
                outputs=[check_delete_confirmation_row, delete_confirm, delete_warning]
            ).then(
                fn=hide_button,
                inputs=[],
                outputs=[delete_assignment_button]
            ).then(
                assignment_service.update_assignment_list,
                inputs=[user_data],
                outputs=assignment_list
            )

        with gr.Tab("儀表板") as dashboard_tab:
            with gr.Row():
                refresh_dashboard_button = gr.Button("刷新儀表板")
            
            with gr.Row():
                assignments_df = gr.Dataframe(
                    label="作業列表",
                    wrap=True,
                    interactive=False,
                )
            with gr.Row():
                download_assignments_button = gr.Button("下載作業列表 CSV")
                assignments_df_file = gr.File()
            with gr.Row():
                gr.HTML("""
                <div style="background-color: #f8f9fa; padding: 30px; border-radius: 15px; font-family: 'Helvetica', sans-serif;">
                    <h2 style="color: #007bff; font-size: 28px; margin-bottom: 20px;">📝 學生回傳作業</h2>
                    <div style="background-color: #e9ecef; padding: 15px; border-radius: 10px; margin-bottom: 20px;">
                        <span style="color:#4e80ee; font-weight: bold;">提醒：</span>
                        <span>評分已獲得綠燈 🟢 的同學，請老師聯繫樂寫公益學習網（cooldeark@gmail.com）以建立帳號</span>
                    </div>
                <div style="background-color: white; border-radius: 10px; padding: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.05);">
                """)
            with gr.Row():
                submissions_df = gr.Dataframe(
                    label="所有提交的作業",
                    wrap=True,
                    interactive=False,
                )
            with gr.Row():
                download_submissions_button = gr.Button("下載提交作業 CSV")
                submissions_df_file = gr.File()

            def update_dashboard(user_data):
                # 獲取作業列表
                assignments = dashboard_service.get_dashboard_data(user_data)
                assignments_df = pd.DataFrame(assignments)

                # 獲取所有提交的作業
                submissions = dashboard_service.get_all_submissions(user_data)
                submissions_df = pd.DataFrame(submissions)

                return assignments_df, submissions_df

            def download_df_to_csv(df):
                import uuid
                unique_filename = str(uuid.uuid4())
                file_path = f"/tmp/{unique_filename}.csv"
                df.to_csv(file_path, index=False)
                return file_path


            refresh_dashboard_button.click(
                fn=update_dashboard,
                inputs=[user_data],
                outputs=[assignments_df, submissions_df]
            )

            download_assignments_button.click(
                fn=download_df_to_csv,
                inputs=[assignments_df],
                outputs=[assignments_df_file]
            )

            download_submissions_button.click(
                fn=download_df_to_csv,
                inputs=[submissions_df],
                outputs=[submissions_df_file]
            )

    return assignment_interface