export type SeasonStatus =
  | 'planned'
  | 'active'
  | 'completed'
  | 'archived'
  | 'cancelled';

import {
  RacingDomainInvariantError,
  RacingDomainValidationError,
} from '../errors/RacingDomainError';
import type { IEntity } from '@gridpilot/shared/domain';
import type { SeasonSchedule } from '../value-objects/SeasonSchedule';
import type { SeasonScoringConfig } from '../value-objects/SeasonScoringConfig';
import type { SeasonDropPolicy } from '../value-objects/SeasonDropPolicy';
import type { SeasonStewardingConfig } from '../value-objects/SeasonStewardingConfig';

export class Season implements IEntity<string> {
  readonly id: string;
  readonly leagueId: string;
  readonly gameId: string;
  readonly name: string;
  readonly year: number | undefined;
  readonly order: number | undefined;
  readonly status: SeasonStatus;
  readonly startDate: Date | undefined;
  readonly endDate: Date | undefined;
  readonly schedule: SeasonSchedule | undefined;
  readonly scoringConfig: SeasonScoringConfig | undefined;
  readonly dropPolicy: SeasonDropPolicy | undefined;
  readonly stewardingConfig: SeasonStewardingConfig | undefined;
  readonly maxDrivers: number | undefined;

  private constructor(props: {
    id: string;
    leagueId: string;
    gameId: string;
    name: string;
    year?: number;
    order?: number;
    status: SeasonStatus;
    startDate?: Date;
    endDate?: Date;
    schedule?: SeasonSchedule;
    scoringConfig?: SeasonScoringConfig;
    dropPolicy?: SeasonDropPolicy;
    stewardingConfig?: SeasonStewardingConfig;
    maxDrivers?: number;
  }) {
    this.id = props.id;
    this.leagueId = props.leagueId;
    this.gameId = props.gameId;
    this.name = props.name;
    this.year = props.year;
    this.order = props.order;
    this.status = props.status;
    this.startDate = props.startDate;
    this.endDate = props.endDate;
    this.schedule = props.schedule;
    this.scoringConfig = props.scoringConfig;
    this.dropPolicy = props.dropPolicy;
    this.stewardingConfig = props.stewardingConfig;
    this.maxDrivers = props.maxDrivers;
  }

  static create(props: {
    id: string;
    leagueId: string;
    gameId: string;
    name: string;
    year?: number;
    order?: number;
    status?: SeasonStatus;
    startDate?: Date;
    endDate?: Date;
    schedule?: SeasonSchedule;
    scoringConfig?: SeasonScoringConfig;
    dropPolicy?: SeasonDropPolicy;
    stewardingConfig?: SeasonStewardingConfig;
    maxDrivers?: number;
  }): Season {
    if (!props.id || props.id.trim().length === 0) {
      throw new RacingDomainValidationError('Season ID is required');
    }

    if (!props.leagueId || props.leagueId.trim().length === 0) {
      throw new RacingDomainValidationError('Season leagueId is required');
    }

    if (!props.gameId || props.gameId.trim().length === 0) {
      throw new RacingDomainValidationError('Season gameId is required');
    }

    if (!props.name || props.name.trim().length === 0) {
      throw new RacingDomainValidationError('Season name is required');
    }

    const status: SeasonStatus = props.status ?? 'planned';

    return new Season({
      id: props.id,
      leagueId: props.leagueId,
      gameId: props.gameId,
      name: props.name,
      ...(props.year !== undefined ? { year: props.year } : {}),
      ...(props.order !== undefined ? { order: props.order } : {}),
      status,
      ...(props.startDate !== undefined ? { startDate: props.startDate } : {}),
      ...(props.endDate !== undefined ? { endDate: props.endDate } : {}),
      ...(props.schedule !== undefined ? { schedule: props.schedule } : {}),
      ...(props.scoringConfig !== undefined
        ? { scoringConfig: props.scoringConfig }
        : {}),
      ...(props.dropPolicy !== undefined ? { dropPolicy: props.dropPolicy } : {}),
      ...(props.stewardingConfig !== undefined
        ? { stewardingConfig: props.stewardingConfig }
        : {}),
      ...(props.maxDrivers !== undefined ? { maxDrivers: props.maxDrivers } : {}),
    });
  }

  /**
   * Domain rule: Wallet withdrawals are only allowed when season is completed
   */
  canWithdrawFromWallet(): boolean {
    return this.status === 'completed';
  }

  /**
   * Check if season is active
   */
  isActive(): boolean {
    return this.status === 'active';
  }

  /**
   * Check if season is completed
   */
  isCompleted(): boolean {
    return this.status === 'completed';
  }

  /**
   * Check if season is planned (not yet active)
   */
  isPlanned(): boolean {
    return this.status === 'planned';
  }

  /**
   * Activate the season from planned state.
   */
  activate(): Season {
    if (this.status !== 'planned') {
      throw new RacingDomainInvariantError(
        'Only planned seasons can be activated',
      );
    }

    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: 'active',
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {
        startDate: new Date(),
      }),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Mark the season as completed.
   */
  complete(): Season {
    if (this.status !== 'active') {
      throw new RacingDomainInvariantError(
        'Only active seasons can be completed',
      );
    }

    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: 'completed',
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {
        endDate: new Date(),
      }),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Archive a completed season.
   */
  archive(): Season {
    if (!this.isCompleted()) {
      throw new RacingDomainInvariantError(
        'Only completed seasons can be archived',
      );
    }

    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: 'archived',
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Cancel a planned or active season.
   */
  cancel(): Season {
    if (this.status === 'completed' || this.status === 'archived') {
      throw new RacingDomainInvariantError(
        'Cannot cancel a completed or archived season',
      );
    }

    if (this.status === 'cancelled') {
      return this;
    }

    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: 'cancelled',
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {
        endDate: new Date(),
      }),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Update schedule while keeping other properties intact.
   */
  withSchedule(schedule: SeasonSchedule): Season {
    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: this.status,
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      schedule,
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Update scoring configuration for the season.
   */
  withScoringConfig(scoringConfig: SeasonScoringConfig): Season {
    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: this.status,
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      scoringConfig,
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Update drop policy for the season.
   */
  withDropPolicy(dropPolicy: SeasonDropPolicy): Season {
    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: this.status,
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      dropPolicy,
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Update stewarding configuration for the season.
   */
  withStewardingConfig(stewardingConfig: SeasonStewardingConfig): Season {
    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: this.status,
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      stewardingConfig,
      ...(this.maxDrivers !== undefined ? { maxDrivers: this.maxDrivers } : {}),
    });
  }

  /**
   * Update max driver capacity for the season.
   */
  withMaxDrivers(maxDrivers: number | undefined): Season {
    if (maxDrivers !== undefined && maxDrivers <= 0) {
      throw new RacingDomainValidationError(
        'Season maxDrivers must be greater than 0 when provided',
      );
    }

    return Season.create({
      id: this.id,
      leagueId: this.leagueId,
      gameId: this.gameId,
      name: this.name,
      ...(this.year !== undefined ? { year: this.year } : {}),
      ...(this.order !== undefined ? { order: this.order } : {}),
      status: this.status,
      ...(this.startDate !== undefined ? { startDate: this.startDate } : {}),
      ...(this.endDate !== undefined ? { endDate: this.endDate } : {}),
      ...(this.schedule !== undefined ? { schedule: this.schedule } : {}),
      ...(this.scoringConfig !== undefined
        ? { scoringConfig: this.scoringConfig }
        : {}),
      ...(this.dropPolicy !== undefined ? { dropPolicy: this.dropPolicy } : {}),
      ...(this.stewardingConfig !== undefined
        ? { stewardingConfig: this.stewardingConfig }
        : {}),
      ...(maxDrivers !== undefined ? { maxDrivers } : {}),
    });
  }
}