import { Participant } from './storage';
import { GrandFinalType, Id, RoundRobinMode, SeedOrdering, StageType } from './unions';
/**
 * An item of the seeding with a `name` and extra fields.
 */
export type CustomParticipant<ExtraFields = Record<string, unknown>> = Pick<Participant, 'name'> & ExtraFields;
/**
 * The seeding for a stage.
 *
 * Each element represents a participant, which can be:
 * - An object with a `name` and extra fields.
 * - Its name (string).
 * - Its ID (only integers are supported, for backwards compatibility).
 * - Or a BYE: `null`.
 */
export type Seeding = (CustomParticipant | string | number | null)[];
/**
 * The seeding for a stage (only containing IDs or BYEs).
 */
export type IdSeeding = (Id | null)[];
/**
 * A seed position in a manual ordering. A BYE is represented by `null`.
 */
export type Seed = number | null;
/**
 * Used to create a stage.
 */
export interface InputStage {
    /**
     * ID of the parent tournament.
     *
     * Used to determine the `number` property of a stage related to a tournament.
     */
    tournamentId: Id;
    /** Name of the stage. */
    name: string;
    /** Type of stage. */
    type: StageType;
    /** The number of the stage in its tournament. Is determined if not given. */
    number?: number;
    /** Contains participants or `null` for BYEs. */
    seeding?: Seeding;
    seedingIds?: IdSeeding;
    /** Contains optional settings specific to each stage type. */
    settings?: StageSettings;
}
/**
 * The possible settings for a stage.
 */
export interface StageSettings {
    /**
     * The number of participants in the stage.
     */
    size?: number;
    /**
     * A list of ordering methods to apply to the seeding.
     *
     * - For a round-robin stage: 1 item required (**with** `"groups."` prefix).
     *   - Used to distribute in groups.
     * - For a simple elimination stage, 1 item required (**without** `"groups."` prefix).
     *   - Used to distribute in round 1.
     * - For a double elimination stage, 1 item required, 3+ items supported (**without** `"groups."` prefix).
     *   - Item 1 (required) - Used to distribute in WB round 1.
     *   - Item 2 - Used to distribute WB losers in LB round 1.
     *   - Items 3+ - Used to distribute WB losers in LB minor rounds (1 per round).
     */
    seedOrdering?: SeedOrdering[];
    /**
     * Whether to balance BYEs in the seeding of an elimination stage.
     *
     * This prevents having BYE against BYE in matches.
     */
    balanceByes?: boolean;
    /**
     * All matches of the stage will have this child count. This can later be overridden for certain groups, rounds or matches.
     */
    matchesChildCount?: number;
    /**
     * Number of groups in a round-robin stage.
     */
    groupCount?: number;
    /**
     * The mode for the round-robin stage.
     *
     * - If `simple`, each participant plays each opponent once.
     * - If `double`, each participant plays each opponent twice, once at home and once away.
     */
    roundRobinMode?: RoundRobinMode;
    /**
     * A list of seeds to manually order the stage.
     *
     * - For a round-robin stage: a list of seeds per group.
     * - For an elimination stage: a single list of seeds for the bracket.
     *
     * Seed ordering is ignored if this property is given.
     */
    manualOrdering?: Seed[][];
    /**
     * Optional final between semi-final losers.
     */
    consolationFinal?: boolean;
    /**
     * Whether to skip the first round of the WB of a double elimination stage.
     */
    skipFirstRound?: boolean;
    /**
     * Optional grand final between WB and LB winners.
     *
     * - If `none`, there is no grand final.
     * - If `simple`, the final is a single match. The winner is the winner of the stage.
     * - If `double`, if the WB winner wins, it's the winner of the stage. But if it loses, the final is reset and there is a very last match, known as the reset match.
     *   It gives the WB winner the right to lose once during the stage. This is commonly known as "resetting the bracket".
     */
    grandFinal?: GrandFinalType;
}