98 lines
3.0 KiB
Python
98 lines
3.0 KiB
Python
from flask import Blueprint, jsonify
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from app import SYDNEY_TZ
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from app.auth import login_required
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from app.db import query
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from datetime import timezone
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bp = Blueprint("api", __name__, url_prefix="/api")
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@bp.route("/chart-data/<int:user_id>")
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@login_required
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def chart_data(user_id):
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"""Return weight & BMI over time for Chart.js."""
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checkins = query(
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"""SELECT weight_kg, bmi, checked_in_at
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FROM checkins WHERE user_id = %s
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ORDER BY checked_in_at ASC""",
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(user_id,),
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)
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labels = [c["checked_in_at"].replace(tzinfo=timezone.utc).astimezone(SYDNEY_TZ).strftime("%d %b") for c in checkins]
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weights = [float(c["weight_kg"]) for c in checkins]
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bmis = [float(c["bmi"]) if c["bmi"] else None for c in checkins]
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return jsonify({
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"labels": labels,
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"weights": weights,
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"bmis": bmis,
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})
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@bp.route("/comparison")
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@login_required
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def comparison():
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"""Return all-user comparison data for bar charts."""
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users = query("""
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SELECT
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u.id,
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u.display_name,
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u.username,
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u.starting_weight_kg,
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(SELECT weight_kg FROM checkins WHERE user_id = u.id ORDER BY checked_in_at ASC LIMIT 1) as first_weight,
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(SELECT weight_kg FROM checkins WHERE user_id = u.id ORDER BY checked_in_at DESC LIMIT 1) as current_weight
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FROM users u
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WHERE (SELECT COUNT(*) FROM checkins WHERE user_id = u.id) > 0
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ORDER BY u.display_name
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""")
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names = []
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pct_lost = []
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kg_lost = []
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for u in users:
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start_w = float(u["starting_weight_kg"] or u["first_weight"] or 0)
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current_w = float(u["current_weight"] or start_w)
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if start_w > 0:
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lost = start_w - current_w
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pct = round((lost / start_w) * 100, 1)
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else:
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lost = 0
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pct = 0
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names.append(u["display_name"] or u["username"])
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pct_lost.append(pct)
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kg_lost.append(round(lost, 1))
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return jsonify({
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"names": names,
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"pct_lost": pct_lost,
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"kg_lost": kg_lost,
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})
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@bp.route("/weekly-change/<int:user_id>")
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@login_required
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def weekly_change(user_id):
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"""Return weekly weight changes for bar chart."""
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checkins = query(
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"""SELECT weight_kg, checked_in_at
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FROM checkins WHERE user_id = %s
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ORDER BY checked_in_at ASC""",
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(user_id,),
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)
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if len(checkins) < 2:
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return jsonify({"labels": [], "changes": []})
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labels = []
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changes = []
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for i in range(1, len(checkins)):
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prev_w = float(checkins[i - 1]["weight_kg"])
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curr_w = float(checkins[i]["weight_kg"])
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change = round(curr_w - prev_w, 1)
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label = checkins[i]["checked_in_at"].replace(tzinfo=timezone.utc).astimezone(SYDNEY_TZ).strftime("%d %b")
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labels.append(label)
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changes.append(change)
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return jsonify({"labels": labels, "changes": changes})
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