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import { userDataDb } from '@hollowdark/persistence/client'
import type { World } from '@hollowdark/engine/entities/world'
/**
* The single world a player has on this device, or `null` if they have
* never begun one. Design invariant: one continuous world per player.
* Should the table ever hold more than one row, the earliest-created
* row wins — newer rows would only arise from explicit import.
*/
export async function getCurrentWorld(): Promise<World | null> {
const rows = await userDataDb().worlds.toArray()
if (rows.length === 0) return null
return rows.reduce((earliest, candidate) =>
candidate.createdAt < earliest.createdAt ? candidate : earliest
)
}
/** Persist a world record. Replaces any existing row with the same id. */
export async function saveWorld(world: World): Promise<void> {
await userDataDb().worlds.put(world)
}
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