import * as s from "mikro/schema";

// Define a schema for sensor readings
const SensorReading = s.object({
  temperature: s.number(),
  humidity: s.number(),
  label: s.optional(s.string()),
});

// Define a schema for device commands using tagged unions
const Command = s.taggedUnion("type", {
  setInterval: s.object({ ms: s.number() }),
  calibrate: s.object({ offset: s.number() }),
  reset: s.object({}),
});

// ── Validate a sensor reading ───────────────────────────────────────

const goodReading: unknown = { temperature: 22.5, humidity: 45.2, label: "living-room" };
const badReading: unknown = { temperature: "warm", humidity: 45.2 };

const result1 = s.parse(SensorReading, goodReading);
if (result1.ok) {
  console.log(`Temperature: ${result1.value.temperature}`);
  console.log(`Humidity: ${result1.value.humidity}`);
  console.log(`Label: ${result1.value.label ?? "(none)"}`);
} else {
  console.error("Invalid reading:", result1.error);
}

const result2 = s.parse(SensorReading, badReading);
if (result2.ok) {
  console.log("This should not happen");
} else {
  console.error("Caught bad reading:", result2.error);
}

// ── Validate a tagged union ─────────────────────────────────────────

const commands: unknown[] = [
  { type: "setInterval", ms: 5000 },
  { type: "calibrate", offset: -1.2 },
  { type: "reset" },
  { type: "explode" },
];

for (const cmd of commands) {
  const result = s.parse(Command, cmd);
  if (result.ok) {
    console.log(`Valid command: ${result.value.type}`);
  } else {
    console.error("Invalid command:", result.error);
  }
}