Add report generation with PDF output and respiratory chart

main.py

@@ -0,0 +1,38 @@
+from jinja2 import Environment, FileSystemLoader
+from weasyprint import HTML
+import matplotlib.pyplot as plt
+import os
+
+# 1. Generate a chart with matplotlib
+os.makedirs("static/charts", exist_ok=True)
+chart_path = "static/charts/resp_chart.png"
+
+plt.plot([1, 2, 3, 4], [1, 4, 2, 5], label="Breath Volume")
+plt.legend()
+plt.title("Respiratory Chart")
+plt.savefig(chart_path)
+plt.close()
+
+# 2. Patient data (this would usually come from your DB)
+patient_data = {
+    "name": "Keirstyn Moran",
+    "age": 34,
+    "height": 163,
+    "weight": 56
+}
+
+context = {
+    "patient": patient_data,
+    "indications": "No Respiratory Capacity Limitation",
+    "chart_path": chart_path
+}
+
+# 3. Render Jinja2 template
+env = Environment(loader=FileSystemLoader("templates"))
+template = env.get_template("report.html")
+html_out = template.render(context)
+
+# 4. Generate PDF
+HTML(string=html_out, base_url=".").write_pdf("lung_report.pdf")
+
+print("✅ Report generated: lung_report.pdf")