import type { Logger, UseCaseOutputPort } from '@core/shared/application';
import { Result } from '@core/shared/application/Result';
import type { ApplicationErrorCode } from '@core/shared/errors/ApplicationErrorCode';
import type { Team } from '../../domain/entities/Team';
import type { ITeamMembershipRepository } from '../../domain/repositories/ITeamMembershipRepository';
import type { ITeamRepository } from '../../domain/repositories/ITeamRepository';
import type { TeamMembership } from '../../domain/types/TeamMembership';

export type LeaveTeamErrorCode =
  | 'TEAM_NOT_FOUND'
  | 'NOT_MEMBER'
  | 'OWNER_CANNOT_LEAVE'
  | 'REPOSITORY_ERROR';

export type LeaveTeamInput = {
  teamId: string;
  driverId: string;
};

export interface LeaveTeamResult {
  team: Team;
  previousMembership: TeamMembership;
}

export class LeaveTeamUseCase {
  constructor(
    private readonly teamRepository: ITeamRepository,
    private readonly membershipRepository: ITeamMembershipRepository,
    private readonly logger: Logger,
    private readonly output: UseCaseOutputPort<LeaveTeamResult>,
  ) {}

  async execute(
    input: LeaveTeamInput,
  ): Promise<
    Result<void, ApplicationErrorCode<LeaveTeamErrorCode, { message: string }>>
  > {
    this.logger.debug('Attempting to leave team', { input });
    const { teamId, driverId } = input;

    try {
      const team = await this.teamRepository.findById(teamId);
      if (!team) {
        const error = new Error(`Team ${teamId} not found`);
        this.logger.error('Team not found', error);
        return Result.err({
          code: 'TEAM_NOT_FOUND',
          details: { message: `Team ${teamId} not found` },
        });
      }

      const membership = await this.membershipRepository.getMembership(
        teamId,
        driverId,
      );
      if (!membership) {
        this.logger.warn('Driver is not a member of this team', {
          driverId,
          teamId,
        });
        return Result.err({
          code: 'NOT_MEMBER',
          details: { message: 'Not a member of this team' },
        });
      }

      if (membership.role === 'owner') {
        this.logger.warn('Team owner cannot leave', { driverId, teamId });
        return Result.err({
          code: 'OWNER_CANNOT_LEAVE',
          details: {
            message:
              'Team owner cannot leave. Transfer ownership or disband team first.',
          },
        });
      }

      await this.membershipRepository.removeMembership(teamId, driverId);
      this.logger.info('Driver successfully left team', { driverId, teamId });

      const result: LeaveTeamResult = {
        team,
        previousMembership: membership,
      };
      this.output.present(result);

      return Result.ok(undefined);
    } catch (error) {
      this.logger.error(
        'Failed to leave team due to an unexpected error',
        error instanceof Error ? error : new Error('Unknown error'),
      );
      return Result.err({
        code: 'REPOSITORY_ERROR',
        details: {
          message: error instanceof Error ? error.message : 'Unknown error',
        },
      });
    }
  }
}