import os
import sys
import io
import contextlib
import tempfile
import matplotlib.pyplot as plt
from nicegui import ui, events
from main import (
    compare_design_methods,
    export_to_dxf,
    load_data_from_excel,
    generate_wind_farm_data,
    visualize_design,
    export_all_scenarios_to_excel,
)
import pandas as pd

# 设置matplotlib支持中文显示
plt.rcParams["font.sans-serif"] = ["Microsoft YaHei", "SimHei", "Arial"]
plt.rcParams["axes.unicode_minus"] = False


class Logger(io.StringIO):
    def __init__(self, log_element):
        super().__init__()
        self.log_element = log_element

    def write(self, message):
        if message.strip():
            self.log_element.push(message.strip())
        super().write(message)


# 状态变量
state = {
    "excel_path": None,
    "original_filename": None,
    "results": [],
    "substation": None,
    "turbines": None,
    "cable_specs": None,
    "system_params": None,
    "temp_dir": os.path.join(tempfile.gettempdir(), "windfarm_gui_uploads"),
}

# 确保临时目录存在
if not os.path.exists(state["temp_dir"]):
    os.makedirs(state["temp_dir"], exist_ok=True)


@ui.page("/")
def index():
    # 注入 CSS 隐藏表格自带的复选框列，并定义选中行的高亮背景色
    ui.add_head_html("""
        <style>
            .hide-selection-column .q-table__selection { display: none; }
            .hide-selection-column .q-table tr.selected { background-color: #e3f2fd !important; }
        </style>
    """)
    ui.query("body").style(
        'background-color: #f0f2f5; font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;'
    )

    # 定义 UI 元素引用容器，方便在函数中更新
    refs = {
        "log_box": None,
        "results_table": None,
        "plot_container": None,
        "export_row": None,
        "export_selected_btn": None, # 新增按钮引用
        "status_label": None,
        "upload_widget": None,
        "run_btn": None,
        "current_file_label": None,
        "info_container": None, # 新增信息展示容器
    }

    def update_info_panel():
        if refs["info_container"]:
            refs["info_container"].clear()
            with refs["info_container"]:
                # System Params - Always show
                with ui.row().classes("w-full items-center gap-4 mb-2"):
                    ui.icon('settings', color='primary').classes('text-2xl')
                    ui.label("系统参数").classes("text-lg font-bold")
                    
                    params_text = []
                    
                    # 获取电压
                    v = 66000 # Default
                    is_default_v = True
                    if state.get("system_params") and 'voltage' in state['system_params']:
                        v = state['system_params']['voltage']
                        is_default_v = False
                    
                    v_str = f"电压: {v/1000:.1f} kV" if v >= 1000 else f"电压: {v} V"
                    if is_default_v:
                        v_str += " (默认)"
                    params_text.append(v_str)

                    # 获取功率因数
                    pf = 0.95 # Default
                    is_default_pf = True
                    if state.get("system_params") and 'power_factor' in state['system_params']:
                        pf = state['system_params']['power_factor']
                        is_default_pf = False
                        
                    pf_str = f"功率因数: {pf}"
                    if is_default_pf:
                        pf_str += " (默认)"
                    params_text.append(pf_str)
                        
                    for p in params_text:
                        ui.chip(p, icon='bolt').props('outline color=primary')

                ui.separator().classes('my-2')

                # Cables
                if state.get("cable_specs"):
                    with ui.row().classes("w-full items-center gap-2 mb-2"):
                        ui.icon('cable', color='secondary').classes('text-2xl')
                        ui.label("电缆规格参数").classes("text-lg font-bold")

                    columns = [
                        {'name': 'section', 'label': '截面 (mm²)', 'field': 'section', 'align': 'center'},
                        {'name': 'capacity', 'label': '载流量 (A)', 'field': 'capacity', 'align': 'center'},
                        {'name': 'resistance', 'label': '电阻 (Ω/km)', 'field': 'resistance', 'align': 'center'},
                        {'name': 'cost', 'label': '参考单价 (元/m)', 'field': 'cost', 'align': 'center'},
                    ]
                    rows = []
                    for spec in state["cable_specs"]:
                        # spec is (section, capacity, resistance, cost, is_optional)
                        rows.append({
                            'section': spec[0],
                            'capacity': spec[1],
                            'resistance': spec[2],
                            'cost': spec[3]
                        })
                    ui.table(columns=columns, rows=rows).classes('w-full').props('dense flat bordered')
                else:
                    ui.label("未检测到电缆数据，将使用默认参数。").classes("text-gray-500 italic")

    async def handle_upload(e: events.UploadEventArguments):
        try:
            filename = None
            content = None
            if hasattr(e, "name"):
                filename = e.name
            if hasattr(e, "content"):
                content = e.content
            if content is None and hasattr(e, "file"):
                file_obj = e.file
                if not filename:
                    filename = getattr(
                        file_obj, "name", getattr(file_obj, "filename", None)
                    )
                if hasattr(file_obj, "file") and hasattr(file_obj.file, "read"):
                    content = file_obj.file
                elif hasattr(file_obj, "read"):
                    content = file_obj
            if not filename:
                filename = "uploaded_file.xlsx"
            if content is None:
                ui.notify("上传失败: 无法解析文件内容", type="negative")
                return

            # 清理旧文件，确保目录中只有一个文件
            if os.path.exists(state["temp_dir"]):
                for f in os.listdir(state["temp_dir"]):
                    try:
                        os.remove(os.path.join(state["temp_dir"], f))
                    except:
                        pass

            path = os.path.join(state["temp_dir"], filename)
            if hasattr(content, "seek"):
                try:
                    content.seek(0)
                except Exception:
                    pass
            data = content.read()
            import inspect

            if inspect.iscoroutine(data):
                data = await data
            with open(path, "wb") as f:
                f.write(data)

            state["excel_path"] = path
            state["original_filename"] = filename
            ui.notify(f"文件已上传: {filename}", type="positive")
            if refs["current_file_label"]:
                refs["current_file_label"].text = f"当前文件: {filename}"

            # 加载数据
            try:
                # 尝试解包 4 个返回值 (新版 main.py)
                state["turbines"], state["substation"], state["cable_specs"], state["system_params"] = load_data_from_excel(path)
            except ValueError:
                # 兼容旧版 (如果是 3 个返回值)
                state["turbines"], state["substation"], state["cable_specs"] = load_data_from_excel(path)
                state["system_params"] = {}
            
            update_info_panel()

        except Exception as ex:
            ui.notify(f"上传处理失败: {ex}", type="negative")

    def update_export_buttons():
        if refs["export_row"]:
            refs["export_row"].clear()
        if not state["results"] or not refs["export_row"]:
            return

        # 获取带 _result 后缀的文件名
        download_name = "wind_farm_design_result.xlsx"
        if state.get("original_filename"):
            name_no_ext = os.path.splitext(state["original_filename"])[0]
            download_name = f"{name_no_ext}_result.xlsx"

        # 寻找推荐方案：优先 Scenario 1 的最低成本，否则取全局最低成本
        scenario1_results = [r for r in state["results"] if "Scenario 1" in r["name"]]
        if scenario1_results:
            best_res = min(scenario1_results, key=lambda x: x["cost"])
        else:
            best_res = min(state["results"], key=lambda x: x["cost"])

        with refs["export_row"]:
            ui.button(
                "下载 Excel 对比表",
                on_click=lambda: ui.download("wind_farm_design.xlsx", download_name),
            ).props("icon=download")

            def export_best_dxf():
                if state["substation"] is not None:
                    # 生成安全的文件名
                    safe_name = "".join(
                        [
                            c
                            for c in best_res["name"]
                            if c.isalnum() or c in (" ", "-", "_")
                        ]
                    ).strip()
                    dxf_name = f"design_best_{safe_name}.dxf"

                    export_to_dxf(
                        best_res["turbines"],
                        state["substation"],
                        best_res["eval"]["details"],
                        dxf_name,
                    )
                    ui.download(dxf_name)
                    ui.notify(f'已导出推荐方案: {best_res["name"]}', type="positive")
                else:
                    ui.notify("缺少升压站数据，无法导出 DXF", type="negative")

            ui.button(
                f'导出推荐方案 DXF ({best_res["name"]})', on_click=export_best_dxf
            ).props("icon=architecture color=accent")

            def export_selected_dxf():
                if not refs["results_table"] or not refs["results_table"].selected:
                    ui.notify("请先在上方表格中选择一个方案", type="warning")
                    return

                selected_row = refs["results_table"].selected[0]
                row_name = selected_row.get("original_name", selected_row.get("name"))

                selected_res = next(
                    (r for r in state["results"] if r["name"] == row_name), None
                )

                if selected_res and state["substation"] is not None:
                    safe_name = "".join(
                        [
                            c
                            for c in selected_res["name"]
                            if c.isalnum() or c in (" ", "-", "_")
                        ]
                    ).strip()
                    dxf_name = f"design_{safe_name}.dxf"

                    export_to_dxf(
                        selected_res["turbines"],
                        state["substation"],
                        selected_res["eval"]["details"],
                        dxf_name,
                    )
                    ui.download(dxf_name)
                    ui.notify(f'已导出选中方案: {selected_res["name"]}', type="positive")
                else:
                    ui.notify("无法导出：未找到方案数据或缺少升压站信息", type="negative")

            # 记录此按钮引用，以便 handle_row_click 更新文字
            refs["export_selected_btn"] = ui.button(
                "导出选中方案 DXF", on_click=export_selected_dxf
            ).props("icon=architecture color=primary")

            # 初始化按钮文字
            clean_name = best_res["name"].replace("(推荐) ", "")
            refs["export_selected_btn"].set_text(f"导出选中方案 ({clean_name})")

            def export_all_dxf():
                if not state["results"] or state["substation"] is None:
                    ui.notify("无方案数据可导出", type="warning")
                    return

                import zipfile

                # 1. 确定文件名
                zip_filename = "all_designs_result.zip"
                excel_result_name = "wind_farm_design_result.xlsx"

                # 推断 main.py 生成的原始 Excel 路径
                generated_excel_path = "wind_farm_design.xlsx"

                if state.get("original_filename"):
                    name_no_ext = os.path.splitext(state["original_filename"])[0]
                    zip_filename = f"{name_no_ext}_result.zip"
                    excel_result_name = f"{name_no_ext}_result.xlsx"

                    if state.get("excel_path"):
                        dir_name = os.path.dirname(state["excel_path"])
                        generated_excel_path = os.path.join(
                            dir_name, f"{name_no_ext}_design.xlsx"
                        )

                try:
                    with zipfile.ZipFile(
                        zip_filename, "w", zipfile.ZIP_DEFLATED
                    ) as zipf:
                        # 2. 添加 Excel 结果表
                        if os.path.exists(generated_excel_path):
                            zipf.write(generated_excel_path, arcname=excel_result_name)
                        else:
                            # 尝试重新生成
                            try:
                                temp_excel = "temp_export.xlsx"
                                export_all_scenarios_to_excel(
                                    state["results"], temp_excel
                                )
                                zipf.write(temp_excel, arcname=excel_result_name)
                                os.remove(temp_excel)
                            except Exception as e:
                                print(f"生成Excel失败: {e}")

                        # 3. 添加所有 DXF
                        for res in state["results"]:
                            safe_name = "".join(
                                [
                                    c
                                    for c in res["name"]
                                    if c.isalnum() or c in (" ", "-", "_")
                                ]
                            ).strip()
                            dxf_name = f"design_{safe_name}.dxf"
                            export_to_dxf(
                                res["turbines"],
                                state["substation"],
                                res["eval"]["details"],
                                dxf_name,
                            )
                            zipf.write(dxf_name)
                            try:
                                os.remove(dxf_name)
                            except:
                                pass
                    ui.download(zip_filename)
                    ui.notify("已导出所有方案 (含Excel)", type="positive")
                except Exception as ex:
                    ui.notify(f"导出失败: {ex}", type="negative")

            ui.button("导出全部方案 DXF (ZIP)", on_click=export_all_dxf).props(
                "icon=folder_zip color=secondary"
            )

    def update_plot(result):
        if refs["plot_container"]:
            refs["plot_container"].clear()
            with refs["plot_container"]:
                # 使用 ui.pyplot 上下文自动管理 figure 生命周期
                with ui.pyplot(figsize=(10, 8)) as plot:
                    title = f"{result['name']}\nCost: ¥{result['cost']/10000:.2f}万 | Loss: {result['loss']:.2f} kW"
                    # 显式获取当前 ui.pyplot 创建的 axes，并传递给绘图函数
                    # 确保绘图发生在正确的 figure 上
                    ax = plt.gca()
                    visualize_design(
                        result["turbines"],
                        state["substation"],
                        result["eval"]["details"],
                        title,
                        ax=ax,
                    )

    async def handle_row_click(e):
        # 获取被点击行的数据
        row = e.args[1] if len(e.args) > 1 else None
        if not row:
            return

        # 识别方案名称
        row_name = row.get("original_name", row.get("name"))
        if not row_name:
            return

        selected_res = next(
            (r for r in state["results"] if r["name"] == row_name), None
        )
        if selected_res:
            # 1. 更新拓扑图
            update_plot(selected_res)
            ui.notify(f"已切换至方案: {selected_res['name']}")

            # 2. 通过设置 table 的 selected 属性来实现背景高亮
            if refs["results_table"]:
                refs["results_table"].selected = [row]

            # 3. 更新“导出选中方案”按钮的文本
            if refs["export_selected_btn"]:
                clean_name = row_name.replace("(推荐) ", "")
                refs["export_selected_btn"].set_text(f"导出选中方案 ({clean_name})")

    from nicegui import run
    import queue

    async def run_analysis():
        if not state["excel_path"]:
            ui.notify("请先上传 Excel 坐标文件！", type="warning")
            return
        if refs["log_box"]:
            refs["log_box"].clear()
        log_queue = queue.Queue()

        class QueueLogger(io.StringIO):
            def write(self, message):
                if message and message.strip():
                    log_queue.put(message.strip())
                super().write(message)

        def process_log_queue():
            if refs["log_box"]:
                new_msg = False
                while not log_queue.empty():
                    try:
                        msg = log_queue.get_nowait()
                        refs["log_box"].push(msg)
                        new_msg = True
                        if msg.startswith("--- Scenario"):
                            scenario_name = msg.replace("---", "").strip()
                            if refs["status_label"]:
                                refs["status_label"].text = (
                                    f"正在计算: {scenario_name}..."
                                )
                        elif "开始比较电缆方案" in msg:
                            if refs["status_label"]:
                                refs["status_label"].text = "准备开始计算..."
                    except queue.Empty:
                        break
                if new_msg and refs["log_box"]:
                    # 使用 JS 直接滚动 log 元素到最底部
                    # 增加一个小延时确保内容渲染完成
                    ui.run_javascript(
                        f'var el = document.getElementById("c{refs["log_box"].id}"); if(el) {{ setTimeout(() => {{ el.scrollTop = el.scrollHeight; }}, 10); }}'
                    )

        log_timer = ui.timer(0.1, process_log_queue)
        if refs["status_label"]:
            refs["status_label"].text = "初始化中..."
        processing_dialog.open()
        try:
            # 2. 定义在线程中运行的任务
            def task():
                # 捕获 stdout 到我们的 QueueLogger
                # 禁止 main.py 中的后台绘图，避免线程安全问题
                with contextlib.redirect_stdout(QueueLogger()):
                    return compare_design_methods(
                        excel_path=state["excel_path"],
                        n_clusters_override=None,
                        interactive=False,
                        plot_results=False,
                    )

            # 在后台线程运行计算任务
            results = await run.io_bound(task)

            state["results"] = results
            if not state["excel_path"] and results:
                if state["substation"] is None:
                    _, state["substation"] = generate_wind_farm_data(
                        n_turbines=30, layout="grid", spacing=800
                    )

            # 计算完成后，自动寻找并显示最佳方案的拓扑图
            best_res = None
            if results:
                # 默认推荐 Scenario 1 中成本最低的方案
                scenario1_results = [r for r in results if "Scenario 1" in r["name"]]
                if scenario1_results:
                     best_res = min(scenario1_results, key=lambda x: x["cost"])
                else:
                     # 如果没有 Scenario 1，则回退到全局最优
                     best_res = min(results, key=lambda x: x["cost"])
                
                update_plot(best_res)
                ui.notify(
                    f'计算完成！已自动加载推荐方案: {best_res["name"]}', type="positive"
                )

            # 更新结果表格
            if refs["results_table"]:
                table_data = []
                best_row = None
                for res in results:
                    name_display = res["name"]
                    is_best = False
                    if best_res and res["name"] == best_res["name"]:
                        name_display = f"(推荐) {name_display}"
                        is_best = True

                    # 生成备注信息
                    note = ""
                    original_name = res["name"]

                    # 识别算法
                    if "MST Method" in original_name:
                        note += "最小生成树算法(无容量约束基准); "
                    elif "Base" in original_name:
                        note += "基础扇区扫描(单次扫描); "
                    elif "Rotational" in original_name:
                        note += "旋转扫描优化(全局最优角度); "
                    elif "Esau-Williams" in original_name:
                        note += "Esau-Williams启发式算法(权衡距离与容量); "

                    # 识别电缆策略
                    if "Standard" in original_name:
                        note += "不包含可选电缆型号。"
                    elif "With Optional" in original_name:
                        note += "含可选电缆型号。"
                    elif "No Max" in original_name:
                        note += "不包含可选电缆型号，且可使用的最大截面电缆降一档截面。"

                    row_dict = {
                        "name": name_display,
                        "cost_wan": f"{res['cost'] / 10000:.2f}",
                        "loss_kw": f"{res['loss']:.2f}",
                        "note": note,
                        "original_name": res["name"],
                    }
                    table_data.append(row_dict)
                    if is_best:
                        best_row = row_dict

                refs["results_table"].rows = table_data
                # 初始选中推荐方案，实现自动高亮
                if best_row:
                    refs["results_table"].selected = [best_row]

            update_export_buttons()
            if refs["status_label"]:
                refs["status_label"].text = "计算完成！"
        except Exception as ex:
            ui.notify(f"运行出错: {ex}", type="negative")
            import traceback

            traceback.print_exc()
        finally:
            log_timer.cancel()
            process_log_queue()
            processing_dialog.close()

    with ui.dialog() as processing_dialog:
        with ui.card().classes("w-96 items-center justify-center p-6"):
            ui.label("正在计算方案...").classes("text-xl font-bold text-primary mb-2")
            ui.spinner(size="lg", color="primary")
            refs["status_label"] = ui.label("准备中...").classes(
                "mt-4 text-sm text-gray-700 font-medium"
            )
            with ui.expansion("查看实时日志", icon="terminal", value=True).classes(
                "w-full mt-4 text-sm"
            ):
                # 直接控制 log 组件的样式和滚动，去除 scroll_area 中间层
                refs["log_box"] = ui.log(max_lines=100).classes(
                    "w-full h-32 overflow-y-auto p-2 bg-black text-xs font-mono text-green-400 leading-snug"
                )
    processing_dialog.props("persistent")

    with ui.header().classes("bg-primary text-white p-4 shadow-lg"):
        ui.label("海上风电场集电线路设计优化系统 v1.0").classes("text-2xl font-bold")
        ui.label("Wind Farm Collector System Design Optimizer").classes(
            "text-sm opacity-80"
        )

    with ui.row().classes("w-full p-4 gap-4"):
        with ui.card().classes("w-1/4 p-4 shadow-md"):
            ui.label("配置面板").classes("text-xl font-semibold mb-4 border-b pb-2")

            def export_template():
                from generate_template import create_template
                try:
                    create_template()
                    ui.download("coordinates.xlsx")
                    ui.notify("Excel 模板导出成功", type="positive")
                except Exception as ex:
                    ui.notify(f"模板导出失败: {ex}", type="negative")

            ui.button("导出 Excel 模板", on_click=export_template).classes(
                "w-full mb-4"
            ).props("icon=file_download outline color=primary")

            ui.label("1. 上传坐标文件 (.xlsx)").classes("font-medium")
            refs["upload_widget"] = ui.upload(
                label="选择Excel文件", on_upload=handle_upload, auto_upload=True
            ).classes("w-full mb-2")
            # refs['current_file_label'] = ui.label('未选择文件').classes('text-xs text-gray-500 mb-4 italic')

            refs["run_btn"] = (
                ui.button(
                    "运行方案对比",
                    on_click=run_analysis,
                )
                .classes("w-full mt-4 py-4")
                .props("icon=play_arrow color=secondary")
            )

        with ui.column().classes("w-3/4 gap-4"):
            # 新增：信息展示卡片
            with ui.card().classes("w-full p-4 shadow-md").style("max-height: 400px; overflow-y: auto;"):
                 refs["info_container"] = ui.column().classes("w-full")
                 ui.label("请上传 Excel 文件以查看系统参数和电缆规格...").classes("text-gray-500 italic")

            with ui.card().classes("w-full p-4 shadow-md"):
                ui.label("方案对比结果 (点击行查看拓扑详情)").classes(
                    "text-xl font-semibold mb-2"
                )
                columns = [
                    {
                        "name": "name",
                        "label": "方案名称",
                        "field": "name",
                        "required": True,
                        "align": "left",
                    },
                    {
                        "name": "cost_wan",
                        "label": "总投资 (万元)",
                        "field": "cost_wan",
                        "sortable": True,
                    },
                    {
                        "name": "loss_kw",
                        "label": "线损 (kW)",
                        "field": "loss_kw",
                        "sortable": True,
                    },
                    {
                        "name": "note",
                        "label": "备注",
                        "field": "note",
                        "align": "left",
                    },
                ]
                # 使用内置的 selection='single' 结合行点击事件实现背景高亮
                # 这样可以完全由 Python 事件逻辑控制，不依赖 CSS 伪类
                refs["results_table"] = ui.table(
                    columns=columns,
                    rows=[],
                    selection="single",
                    row_key="original_name",
                ).classes("w-full hide-selection-column")
                refs["results_table"].on("row-click", handle_row_click)
            with ui.card().classes("w-full p-4 shadow-md"):
                ui.label("拓扑可视化").classes("text-xl font-semibold mb-2")
                refs["plot_container"] = ui.column().classes("w-full items-center")
            with ui.card().classes("w-full p-4 shadow-md"):
                ui.label("导出与下载").classes("text-xl font-semibold mb-2")
                refs["export_row"] = ui.row().classes("gap-4")


def find_available_port(start_port=8080, max_attempts=10):
    """尝试寻找可用的端口"""
    import socket

    for port in range(start_port, start_port + max_attempts):
        with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
            try:
                s.bind(("0.0.0.0", port))
                return port
            except OSError:
                continue
    return start_port  # 默认返回起始端口，让 ui.run 报错


# 自动寻找可用端口，避免端口冲突
target_port = find_available_port(8080)

# 检测是否为打包后的exe程序
import sys
if getattr(sys, 'frozen', False):
    # 打包环境下禁用日志配置，避免在无控制台模式下出现错误
    import logging
    logging.disable(logging.CRITICAL)
    ui.run(title="海上风电场集电线路优化", port=target_port, log_level=None)
else:
    # 普通使用环境保留日志功能
    ui.run(title="海上风电场集电线路优化", port=target_port)