import { LeagueWithCapacityAndScoringDTO } from '@/lib/types/generated/LeagueWithCapacityAndScoringDTO';
import { LeagueStatsDTO } from '@/lib/types/generated/LeagueStatsDTO';
import { LeagueMembershipsDTO } from '@/lib/types/generated/LeagueMembershipsDTO';
import { GetDriverOutputDTO } from '@/lib/types/generated/GetDriverOutputDTO';
import { LeagueScoringConfigDTO } from '@/lib/types/generated/LeagueScoringConfigDTO';
import { RaceViewModel } from './RaceViewModel';
import { DriverViewModel } from './DriverViewModel';

// Sponsor info type
export interface SponsorInfo {
  id: string;
  name: string;
  logoUrl?: string;
  websiteUrl?: string;
  tier: 'main' | 'secondary';
  tagline?: string;
}

// Driver summary for management section
export interface DriverSummary {
  driver: DriverViewModel;
  rating: number | null;
  rank: number | null;
}

// League membership with role
export interface LeagueMembershipWithRole {
  driverId: string;
  role: 'owner' | 'admin' | 'steward' | 'member';
  status: 'active' | 'inactive';
  joinedAt: string;
}

// Helper interfaces for type narrowing
interface LeagueSettings {
  maxDrivers?: number;
}

interface SocialLinks {
  discordUrl?: string;
  youtubeUrl?: string;
  websiteUrl?: string;
}

interface LeagueStatsExtended {
  averageSOF?: number;
  averageRating?: number;
  completedRaces?: number;
  totalRaces?: number;
}

interface MembershipsContainer {
  members?: Array<{ driverId: string; role: string; status?: 'active' | 'inactive'; joinedAt: string }>;
  memberships?: Array<{ driverId: string; role: string; status?: 'active' | 'inactive'; joinedAt: string }>;
}

export class LeagueDetailPageViewModel {
  // League basic info
  id: string;
  name: string;
  description?: string;
  ownerId: string;
  createdAt: string;
  settings: {
    maxDrivers?: number;
  };
  socialLinks: {
    discordUrl?: string;
    youtubeUrl?: string;
    websiteUrl?: string;
  } | undefined;

  // Owner info
  owner: GetDriverOutputDTO | null;

  // Scoring configuration
  scoringConfig: LeagueScoringConfigDTO | null;

  // Drivers and memberships
  drivers: GetDriverOutputDTO[];
  memberships: LeagueMembershipWithRole[];

  // Races
  allRaces: RaceViewModel[];
  runningRaces: RaceViewModel[];

  // Stats
  averageSOF: number | null;
  completedRacesCount: number;

  // Sponsors
  sponsors: SponsorInfo[];

  // Sponsor insights data
  sponsorInsights: {
    avgViewsPerRace: number;
    totalImpressions: number;
    engagementRate: string;
    estimatedReach: number;
    mainSponsorAvailable: boolean;
    secondarySlotsAvailable: number;
    mainSponsorPrice: number;
    secondaryPrice: number;
    tier: 'premium' | 'standard' | 'starter';
    trustScore: number;
    discordMembers: number;
    monthlyActivity: number;
  };

  // Driver summaries for management
  ownerSummary: DriverSummary | null;
  adminSummaries: DriverSummary[];
  stewardSummaries: DriverSummary[];

  constructor(
    league: LeagueWithCapacityAndScoringDTO,
    owner: GetDriverOutputDTO | null,
    scoringConfig: LeagueScoringConfigDTO | null,
    drivers: GetDriverOutputDTO[],
    memberships: LeagueMembershipsDTO,
    allRaces: RaceViewModel[],
    leagueStats: LeagueStatsDTO,
    sponsors: SponsorInfo[]
  ) {
    this.id = league.id;
    this.name = league.name;
    this.description = league.description ?? '';
    this.ownerId = league.ownerId;
    this.createdAt = league.createdAt;
    
    // Handle settings with proper type narrowing
    const settings = league.settings as LeagueSettings | undefined;
    const maxDrivers = settings?.maxDrivers;
    this.settings = {
      maxDrivers: maxDrivers,
    };
    
    // Handle social links with proper type narrowing
    const socialLinks = league.socialLinks as SocialLinks | undefined;
    const discordUrl = socialLinks?.discordUrl;
    const youtubeUrl = socialLinks?.youtubeUrl;
    const websiteUrl = socialLinks?.websiteUrl;
    
    this.socialLinks = {
      discordUrl,
      youtubeUrl,
      websiteUrl,
    };

    this.owner = owner;
    this.scoringConfig = scoringConfig;
    this.drivers = drivers;

    // Handle memberships with proper type narrowing
    const membershipsContainer = memberships as MembershipsContainer;
    const membershipDtos = membershipsContainer.members ?? 
                           membershipsContainer.memberships ?? 
                           [];

    this.memberships = membershipDtos.map((m) => ({
      driverId: m.driverId,
      role: m.role as 'owner' | 'admin' | 'steward' | 'member',
      status: m.status ?? 'active',
      joinedAt: m.joinedAt,
    }));

    this.allRaces = allRaces;
    this.runningRaces = allRaces.filter(r => r.status === 'running');

    // Calculate SOF from available data with proper type narrowing
    const statsExtended = leagueStats as LeagueStatsExtended;
    const averageSOF = statsExtended.averageSOF ?? 
                      statsExtended.averageRating ?? undefined;
    const completedRaces = statsExtended.completedRaces ?? 
                          statsExtended.totalRaces ?? undefined;

    this.averageSOF = typeof averageSOF === 'number' ? averageSOF : null;
    this.completedRacesCount = typeof completedRaces === 'number' ? completedRaces : 0;

    this.sponsors = sponsors;

    // Calculate sponsor insights
    const memberCount = this.memberships.length;
    const mainSponsorTaken = this.sponsors.some(s => s.tier === 'main');
    const secondaryTaken = this.sponsors.filter(s => s.tier === 'secondary').length;

    this.sponsorInsights = {
      avgViewsPerRace: 5400 + memberCount * 50,
      totalImpressions: 45000 + memberCount * 500,
      engagementRate: (3.5 + (memberCount / 50)).toFixed(1),
      estimatedReach: memberCount * 150,
      mainSponsorAvailable: !mainSponsorTaken,
      secondarySlotsAvailable: Math.max(0, 2 - secondaryTaken),
      mainSponsorPrice: 800 + Math.floor(memberCount * 10),
      secondaryPrice: 250 + Math.floor(memberCount * 3),
      tier: (this.averageSOF && this.averageSOF > 3000 ? 'premium' : this.averageSOF && this.averageSOF > 2000 ? 'standard' : 'starter') as 'premium' | 'standard' | 'starter',
      trustScore: Math.min(100, 60 + memberCount + this.completedRacesCount),
      discordMembers: memberCount * 3,
      monthlyActivity: Math.min(100, 40 + this.completedRacesCount * 2),
    };

    // Build driver summaries
    this.ownerSummary = this.buildDriverSummary(this.ownerId);
    this.adminSummaries = this.memberships
      .filter(m => m.role === 'admin')
      .slice(0, 3)
      .map(m => this.buildDriverSummary(m.driverId))
      .filter((s): s is DriverSummary => s !== null);
    this.stewardSummaries = this.memberships
      .filter(m => m.role === 'steward')
      .slice(0, 3)
      .map(m => this.buildDriverSummary(m.driverId))
      .filter((s): s is DriverSummary => s !== null);
  }

  private buildDriverSummary(driverId: string): DriverSummary | null {
    const driverDto = this.drivers.find(d => d.id === driverId);
    if (!driverDto) return null;

    // Handle avatarUrl with proper type checking
    const driverAny = driverDto as { avatarUrl?: unknown };
    const avatarUrl = typeof driverAny.avatarUrl === 'string' ? driverAny.avatarUrl : null;

    const driver = new DriverViewModel({
      id: driverDto.id,
      name: driverDto.name,
      avatarUrl: avatarUrl,
      iracingId: driverDto.iracingId,
    });

    // Detailed rating and rank data are not wired from the analytics services yet;
    // expose the driver identity only so the UI can still render role assignments.
    return {
      driver,
      rating: null,
      rank: null,
    };
  }

  // UI helper methods
  get isSponsorMode(): boolean {
    // League detail pages are rendered in organizer mode in this build; sponsor-specific
    // mode switches will be introduced once sponsor dashboards share this view model.
    return false;
  }

  get currentUserMembership(): LeagueMembershipWithRole | null {
    // Current user identity is not available in this view model context yet; callers must
    // pass an explicit membership if they need per-user permissions.
    return null;
  }

  get canEndRaces(): boolean {
    return this.currentUserMembership?.role === 'admin' || this.currentUserMembership?.role === 'owner';
  }
}