/**
 * TeamDetailsPresenter - Pure data transformer
 * Transforms API response to view model without DI dependencies.
 */

import { apiClient, type TeamDetailsViewModel as ApiTeamDetailsViewModel } from '@/lib/apiClient';

export interface TeamMembershipViewModel {
  role: string;
  joinedAt: string;
  isActive: boolean;
}

export interface TeamInfoViewModel {
  id: string;
  name: string;
  tag?: string | undefined;
  description?: string | undefined;
  ownerId: string;
  leagues?: string[] | undefined;
  createdAt: string;
}

export interface TeamDetailsViewModel {
  team: TeamInfoViewModel;
  membership: TeamMembershipViewModel | null;
  canManage: boolean;
}

export interface ITeamDetailsPresenter {
  reset(): void;
  getViewModel(): TeamDetailsViewModel | null;
}

/**
 * Transform API response to view model
 */
function transformApiResponse(apiResponse: ApiTeamDetailsViewModel): TeamDetailsViewModel {
  return {
    team: {
      id: apiResponse.id,
      name: apiResponse.name,
      description: apiResponse.description,
      ownerId: apiResponse.ownerId,
      createdAt: new Date().toISOString(), // Would need from API
    },
    membership: null, // Would need from API based on current user
    canManage: false, // Would need from API based on current user
  };
}

export class TeamDetailsPresenter implements ITeamDetailsPresenter {
  private viewModel: TeamDetailsViewModel | null = null;

  reset(): void {
    this.viewModel = null;
  }

  async fetchAndPresent(teamId: string): Promise<void> {
    const apiResponse = await apiClient.teams.getDetails(teamId);
    if (apiResponse) {
      this.viewModel = transformApiResponse(apiResponse);
    } else {
      this.viewModel = null;
    }
  }

  getViewModel(): TeamDetailsViewModel | null {
    return this.viewModel;
  }
}

/**
 * Convenience function to fetch and transform team details
 */
export async function fetchTeamDetails(teamId: string): Promise<TeamDetailsViewModel | null> {
  const apiResponse = await apiClient.teams.getDetails(teamId);
  if (!apiResponse) {
    return null;
  }
  return transformApiResponse(apiResponse);
}