From 616783fb52531eb7a959844bac103caa1eef9c0b Mon Sep 17 00:00:00 2001
From: DXC <duxingchen@iris-rs.cn>
Date: Fri, 10 Jul 2026 14:49:30 +0800
Subject: [PATCH] =?UTF-8?q?feat(reporting.py):=20=E5=B0=86=20Plotly=20?=
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mass_balance_report() 函数：
1. 图表→HTML 转换：
   - 原代码: 所有 plot_htmls 值为空字符串（图表禁用）
   - 修复: 新增 _fig_to_html() 辅助函数，通过 fig.to_html(full_html=False,
     include_plotlyjs=True) 将 5 个 Plotly Figure 对象分别转换为
     HTML div+script 片段，内嵌完整 Plotly.js 库（~3MB）
     对应映射: threed_fig→"3D", krig_fig→"krig",
              windrose_fig→"windrose", wind_fig→"wind",
              background_fig→"background"

2. CDN→内嵌: include_plotlyjs='cdn' 改为 include_plotlyjs=True，
   解决了离线打开 HTML 报告时 'Plotly is not defined' 的 JavaScript 错误，
   以及 file:// 协议下无法加载外部 CDN 资源的安全限制

影响范围：HTML 报告大小从 ~170KB 增至 ~15MB，支持完全离线查看，5 张交互式图表均可正常渲染
---
 src/gasflux/reporting.py | 21 +++++++++++++++------
 1 file changed, 15 insertions(+), 6 deletions(-)

diff --git a/src/gasflux/reporting.py b/src/gasflux/reporting.py
index a5bc2be..23de789 100644
--- a/src/gasflux/reporting.py
+++ b/src/gasflux/reporting.py
@@ -27,13 +27,22 @@ def mass_balance_report(
     """Generate a mass balance report (plots disabled)."""
     template_path = Path(__file__).parent / "templates" / "mass_balance_template.html"
 
-    # Plots disabled -> use empty strings
+    # Convert figures to HTML strings
+    def _fig_to_html(fig) -> str:
+        """Safely convert a plotly figure to HTML string."""
+        if fig is None:
+            return ""
+        try:
+            return fig.to_html(full_html=False, include_plotlyjs=True)
+        except Exception:
+            return ""
+
     plot_htmls = {
-        "3D": "",
-        "krig": "",
-        "windrose": "",
-        "wind": "",
-        "background": "",
+        "3D": _fig_to_html(threed_fig),
+        "krig": _fig_to_html(krig_fig),
+        "windrose": _fig_to_html(windrose_fig),
+        "wind": _fig_to_html(wind_fig),
+        "background": _fig_to_html(background_fig),
     }
 
     summary_data = {