import type { WorldAssignment, WorldAssignmentSnapshot } from '../../../domain/services/worldAssignment.js';
export type { WorldAssignment, WorldAssignmentSnapshot };
/**
 * World Assignment Port - Outbound Port (ADR-0001, final in ADR-0002 / #670)
 *
 * Assignments are derived from each server's LEVEL; the rules are the pure
 * domain functions in domain/services/worldAssignment.ts. Errors are
 * WorldAssignmentError. `server_running` is the use case's job: the port knows
 * nothing about the runtime.
 */
export interface IWorldAssignmentPort {
    /** The readable assignments. Undetermined servers are left out: use snapshot() to see them. */
    listAssignments(): Promise<WorldAssignment[]>;
    /** Assignments plus undetermined servers. Rejects only when servers/ cannot be listed (ENOENT = empty). */
    snapshot(): Promise<WorldAssignmentSnapshot>;
    /**
     * The snapshot as it would be with `server`'s config.env replaced by
     * `configEnv` (snapshot restore, migrate, config writes). Writes nothing.
     */
    preview(server: string, configEnv: string): Promise<WorldAssignmentSnapshot>;
    /**
     * The snapshot as it would be with the platform .env replaced by `dotenv`
     * (its EXTRA_ARGS reaches servers through a bare key in servers/global.env).
     * Writes nothing.
     */
    previewPlatformEnv(dotenv: string): Promise<WorldAssignmentSnapshot>;
    /**
     * Writes LEVEL=<world> after checkAssign on a fresh snapshot; no-op if already
     * assigned. `seed` (a new world's SEED, #734) is written in the same
     * ServerSpec write (#675), even when LEVEL is unchanged; an invalid value
     * rejects before anything is written.
     */
    assign(world: string, server: string, options?: {
        seed?: string;
    }): Promise<void>;
    /** Unassign (#715): the holder's LEVEL becomes `<holder>`. */
    release(world: string): Promise<{
        server: string;
        fallback: string;
    }>;
}
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