Add running fitness history and configurable heart rate zones

app/training.py

@@ -1,6 +1,6 @@
 """Private training preferences and session observations."""
 
-from flask import Blueprint, abort, flash, redirect, request, url_for
+from flask import Blueprint, abort, flash, jsonify, redirect, render_template, request, url_for
 from flask_login import current_user, login_required
 
 from .extensions import db
@@ -9,6 +9,68 @@ from .models import Activity
 training = Blueprint("training", __name__)
 
 
+@training.get("/fitness")
+@login_required
+def fitness():
+    from .fitness import history
+
+    return render_template("fitness.html", data=history(current_user))
+
+
+@training.get("/fitness/data")
+@login_required
+def fitness_data():
+    from .fitness import history
+
+    return jsonify(history(current_user))
+
+
+@training.app_context_processor
+def fitness_helpers():
+    from .fitness import effort
+    from .heart_rate import zones
+
+    return {"run_effort": effort, "fitness_zones": zones}
+
+
+@training.post("/training/zones")
+@login_required
+def zones():
+    from datetime import date, datetime
+    from zoneinfo import ZoneInfo
+
+    mode = request.form.get("mode")
+    if mode not in {"auto", "max", "custom"}:
+        abort(400)
+    config = {"mode": mode}
+    try:
+        birthday = request.form.get("birthday", "").strip()
+        if birthday:
+            birthday_date = date.fromisoformat(birthday)
+            today = datetime.now(ZoneInfo(current_user.timezone)).date()
+            age = today.year - birthday_date.year - ((today.month, today.day) <
+                                                     (birthday_date.month, birthday_date.day))
+            if not 5 <= age <= 110:
+                abort(400)
+            config["birthday"] = birthday
+        if mode == "max":
+            maximum = int(request.form.get("max_hr", ""))
+            if not 100 <= maximum <= 230:
+                abort(400)
+            config["max_hr"] = maximum
+        if mode == "custom":
+            boundaries = [int(request.form.get(f"z{i}", "")) for i in range(2, 6)]
+            if not 30 <= boundaries[0] < boundaries[1] < boundaries[2] < boundaries[3] <= 230:
+                abort(400)
+            config["boundaries"] = boundaries
+    except (ValueError, TypeError):
+        abort(400)
+    current_user.hr_zones = config
+    db.session.commit()
+    flash("Fitness zones saved. Your full fitness history recalculates automatically.")
+    return redirect(url_for("training.fitness"))
+
+
 @training.post("/training/bands")
 @login_required
 def bands():