feat: add PWA frontend for CYD ThermoPro dashboard
Add a Flask backend + SQLite + HTML/CSS/JS PWA that: - Polls the CYD /api/latest endpoint - Stores readings, sessions, and freeform notes in SQLite - Displays probe cards with target setpoints and preset options - Renders temperature history with Chart.js - Serves a PWA manifest and dark-themed dashboard Also update cyd-bridge/README.md with verified bringup instructions.
This commit is contained in:
Keith Solomon
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import sqlite3
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from contextlib import contextmanager
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from pathlib import Path
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from datetime import datetime, timezone
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import config
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INIT_SQL = """
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CREATE TABLE IF NOT EXISTS sessions (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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name TEXT NOT NULL,
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started_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
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ended_at TEXT,
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notes TEXT
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);
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CREATE TABLE IF NOT EXISTS readings (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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session_id INTEGER NOT NULL,
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received_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
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device_id TEXT,
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mac TEXT,
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ble_connected INTEGER,
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battery INTEGER,
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unit TEXT,
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probe1_temp REAL,
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probe1_connected INTEGER,
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probe2_temp REAL,
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probe2_connected INTEGER,
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probe3_temp REAL,
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probe3_connected INTEGER,
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probe4_temp REAL,
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probe4_connected INTEGER,
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FOREIGN KEY (session_id) REFERENCES sessions(id)
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);
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CREATE TABLE IF NOT EXISTS setpoints (
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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session_id INTEGER NOT NULL,
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probe_number INTEGER NOT NULL,
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label TEXT,
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target_temp REAL NOT NULL,
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created_at TEXT NOT NULL DEFAULT (strftime('%Y-%m-%dT%H:%M:%fZ', 'now')),
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FOREIGN KEY (session_id) REFERENCES sessions(id),
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UNIQUE(session_id, probe_number)
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);
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CREATE INDEX IF NOT EXISTS idx_readings_session_time
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ON readings(session_id, received_at);
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"""
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def init_db():
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Path(config.DATABASE_PATH).parent.mkdir(parents=True, exist_ok=True)
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with get_connection() as conn:
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conn.executescript(INIT_SQL)
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conn.commit()
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@contextmanager
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def get_connection():
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conn = sqlite3.connect(config.DATABASE_PATH)
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conn.row_factory = sqlite3.Row
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try:
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yield conn
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finally:
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conn.close()
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def utc_now_iso():
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return datetime.now(timezone.utc).isoformat()
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def create_session(name: str, notes: str = ""):
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with get_connection() as conn:
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cursor = conn.execute(
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"INSERT INTO sessions (name, notes) VALUES (?, ?)",
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(name, notes),
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)
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conn.commit()
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return cursor.lastrowid
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def get_active_session():
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with get_connection() as conn:
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row = conn.execute(
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"SELECT * FROM sessions WHERE ended_at IS NULL ORDER BY started_at DESC LIMIT 1"
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).fetchone()
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return dict(row) if row else None
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def end_session(session_id: int):
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with get_connection() as conn:
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conn.execute(
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"UPDATE sessions SET ended_at = ? WHERE id = ?",
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(utc_now_iso(), session_id),
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)
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conn.commit()
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def update_session_notes(session_id: int, notes: str):
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with get_connection() as conn:
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conn.execute(
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"UPDATE sessions SET notes = ? WHERE id = ?",
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(notes, session_id),
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)
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conn.commit()
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def insert_reading(session_id: int, payload: dict):
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probes = payload.get("probes", [])
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temps = []
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connected = []
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for i in range(4):
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if i < len(probes) and probes[i].get("connected"):
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temps.append(probes[i].get("temperature"))
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connected.append(1)
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else:
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temps.append(None)
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connected.append(0)
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with get_connection() as conn:
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conn.execute(
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"""
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INSERT INTO readings (
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session_id, received_at, device_id, mac, ble_connected, battery, unit,
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probe1_temp, probe1_connected,
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probe2_temp, probe2_connected,
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probe3_temp, probe3_connected,
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probe4_temp, probe4_connected
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) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
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""",
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(
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session_id,
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utc_now_iso(),
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payload.get("deviceId"),
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payload.get("mac"),
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1 if payload.get("connected") else 0,
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payload.get("battery"),
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payload.get("unit"),
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temps[0], connected[0],
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temps[1], connected[1],
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temps[2], connected[2],
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temps[3], connected[3],
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),
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)
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conn.commit()
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def get_latest_reading(session_id: int):
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with get_connection() as conn:
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row = conn.execute(
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"SELECT * FROM readings WHERE session_id = ? ORDER BY received_at DESC LIMIT 1",
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(session_id,),
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).fetchone()
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return dict(row) if row else None
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def get_readings(session_id: int, minutes: int = 60, probe_number: int = None):
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with get_connection() as conn:
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if probe_number is not None:
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column = f"probe{probe_number}_temp"
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rows = conn.execute(
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f"""
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SELECT received_at, {column} AS temp, probe{probe_number}_connected AS connected
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FROM readings
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WHERE session_id = ?
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AND received_at > datetime('now', '-{minutes} minutes')
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AND {column} IS NOT NULL
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ORDER BY received_at ASC
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""",
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(session_id,),
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).fetchall()
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else:
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rows = conn.execute(
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f"""
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SELECT received_at,
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probe1_temp, probe1_connected,
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probe2_temp, probe2_connected,
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probe3_temp, probe3_connected,
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probe4_temp, probe4_connected
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FROM readings
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WHERE session_id = ?
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AND received_at > datetime('now', '-{minutes} minutes')
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ORDER BY received_at ASC
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""",
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(session_id,),
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).fetchall()
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return [dict(row) for row in rows]
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def set_setpoint(session_id: int, probe_number: int, label: str, target_temp: float):
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with get_connection() as conn:
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conn.execute(
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"""
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INSERT INTO setpoints (session_id, probe_number, label, target_temp)
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VALUES (?, ?, ?, ?)
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ON CONFLICT(session_id, probe_number) DO UPDATE SET
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label = excluded.label,
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target_temp = excluded.target_temp,
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created_at = excluded.created_at
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""",
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(session_id, probe_number, label, target_temp),
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)
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conn.commit()
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def get_setpoints(session_id: int):
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with get_connection() as conn:
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rows = conn.execute(
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"SELECT * FROM setpoints WHERE session_id = ? ORDER BY probe_number",
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(session_id,),
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).fetchall()
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return [dict(row) for row in rows]
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