'use client';

/**
 * LeagueDetailPresenter
 * Pure client-side presenter for LeagueDetailTemplate
 * Converts ViewModels to ViewData and removes DisplayObject usage
 */

import type { Presenter } from '@/lib/contracts/presenters/Presenter';
import type { DriverSummaryData, LeagueDetailViewData, LeagueInfoData, LiveRaceData, SponsorInfo, SponsorMetric } from '@/lib/view-data/LeagueDetailViewData';
import type { DriverSummary, LeagueDetailPageViewModel } from '@/lib/view-models/LeagueDetailPageViewModel';
import type { RaceViewModel } from '@/lib/view-models/RaceViewModel';
import { Eye, TrendingUp, Users, Zap } from 'lucide-react';

interface SponsorshipSlot {
  tier: 'main' | 'secondary';
  available: boolean;
  price: number;
  benefits: string[];
}

interface LeagueDetailInput {
  viewModel: LeagueDetailPageViewModel;
  leagueId: string;
  isSponsor: boolean;
}

// League role display data (moved from LeagueRoleDisplay)
const leagueRoleDisplay = {
  owner: {
    text: 'Owner',
    badgeClasses: 'bg-yellow-500/10 text-yellow-500 border-yellow-500/30',
  },
  admin: {
    text: 'Admin',
    badgeClasses: 'bg-purple-500/10 text-purple-400 border-purple-500/30',
  },
  steward: {
    text: 'Steward',
    badgeClasses: 'bg-blue-500/10 text-blue-400 border-blue-500/30',
  },
  member: {
    text: 'Member',
    badgeClasses: 'bg-primary-blue/10 text-primary-blue border-primary-blue/30',
  },
} as const;

export class LeagueDetailPresenter implements Presenter<LeagueDetailInput, LeagueDetailViewData> {
  /**
   * Convert RaceViewModel[] to LiveRaceData[]
   */
  private static convertRunningRaces(races: RaceViewModel[]): LiveRaceData[] {
    return races.map(race => ({
      id: race.id,
      name: race.name,
      date: race.date,
      registeredCount: race.registeredCount,
      strengthOfField: race.strengthOfField,
    }));
  }

  /**
   * Convert DriverSummary to DriverSummaryData with role badge info
   */
  private static convertDriverSummary(
    summary: DriverSummary | null,
    role: 'owner' | 'admin' | 'steward' | 'member',
    leagueId: string
  ): DriverSummaryData | null {
    if (!summary) return null;
    
    const roleDisplay = leagueRoleDisplay[role];
    
    return {
      driverId: summary.driver.id,
      driverName: summary.driver.name,
      avatarUrl: summary.driver.avatarUrl,
      rating: summary.rating,
      rank: summary.rank,
      roleBadgeText: roleDisplay.text,
      roleBadgeClasses: roleDisplay.badgeClasses,
      profileUrl: `/drivers/${summary.driver.id}?from=league-management&leagueId=${leagueId}`,
    };
  }

  /**
   * Transform input to output
   */
  present(input: LeagueDetailInput): LeagueDetailViewData {
    const { viewModel, leagueId, isSponsor } = input;

    // Build info data
    const info: LeagueInfoData = {
      name: viewModel.name,
      description: viewModel.description ?? '',
      membersCount: viewModel.memberships.length,
      racesCount: viewModel.completedRacesCount,
      avgSOF: viewModel.averageSOF,
      structure: `Solo • ${viewModel.settings.maxDrivers ?? 32} max`,
      scoring: viewModel.scoringConfig?.scoringPresetName ?? 'Standard',
      createdAt: viewModel.createdAt,
      discordUrl: viewModel.socialLinks?.discordUrl,
      youtubeUrl: viewModel.socialLinks?.youtubeUrl,
      websiteUrl: viewModel.socialLinks?.websiteUrl,
    };

    // Convert running races
    const runningRaces = LeagueDetailPresenter.convertRunningRaces(viewModel.runningRaces);

    // Convert sponsors
    const sponsors: SponsorInfo[] = viewModel.sponsors.map(s => ({
      id: s.id,
      name: s.name,
      tier: s.tier,
      logoUrl: s.logoUrl,
      websiteUrl: s.websiteUrl,
      tagline: s.tagline,
    }));

    // Convert driver summaries with role badges
    const ownerSummary = LeagueDetailPresenter.convertDriverSummary(viewModel.ownerSummary, 'owner', leagueId);
    const adminSummaries = viewModel.adminSummaries
      .map(s => LeagueDetailPresenter.convertDriverSummary(s, 'admin', leagueId))
      .filter((s): s is DriverSummaryData => s !== null);
    const stewardSummaries = viewModel.stewardSummaries
      .map(s => LeagueDetailPresenter.convertDriverSummary(s, 'steward', leagueId))
      .filter((s): s is DriverSummaryData => s !== null);

    // Sponsor insights (only if sponsor mode)
    const sponsorInsights = isSponsor ? {
      avgViewsPerRace: viewModel.sponsorInsights.avgViewsPerRace,
      engagementRate: viewModel.sponsorInsights.engagementRate,
      estimatedReach: viewModel.sponsorInsights.estimatedReach,
      tier: viewModel.sponsorInsights.tier,
      trustScore: viewModel.sponsorInsights.trustScore,
      discordMembers: viewModel.sponsorInsights.discordMembers,
      monthlyActivity: viewModel.sponsorInsights.monthlyActivity,
      mainSponsorAvailable: viewModel.sponsorInsights.mainSponsorAvailable,
      secondarySlotsAvailable: viewModel.sponsorInsights.secondarySlotsAvailable,
      mainSponsorPrice: viewModel.sponsorInsights.mainSponsorPrice,
      secondaryPrice: viewModel.sponsorInsights.secondaryPrice,
      totalImpressions: viewModel.sponsorInsights.totalImpressions,
      metrics: [
        {
          icon: Eye,
          label: 'Avg Views/Race',
          value: viewModel.sponsorInsights.avgViewsPerRace,
          color: 'text-primary-blue',
        },
        {
          icon: TrendingUp,
          label: 'Engagement',
          value: viewModel.sponsorInsights.engagementRate,
          color: 'text-performance-green',
        },
        {
          icon: Users,
          label: 'Est. Reach',
          value: viewModel.sponsorInsights.estimatedReach,
          color: 'text-purple-400',
        },
        {
          icon: Zap,
          label: 'Avg SOF',
          value: viewModel.averageSOF ?? '—',
          color: 'text-warning-amber',
        },
      ],
      slots: [
        {
          tier: 'main' as const,
          available: viewModel.sponsorInsights.mainSponsorAvailable,
          price: viewModel.sponsorInsights.mainSponsorPrice,
          benefits: ['Hood placement', 'League banner', 'Prominent logo'],
        },
        {
          tier: 'secondary' as const,
          available: viewModel.sponsorInsights.secondarySlotsAvailable > 0,
          price: viewModel.sponsorInsights.secondaryPrice,
          benefits: ['Side logo placement', 'League page listing'],
        },
        {
          tier: 'secondary' as const,
          available: viewModel.sponsorInsights.secondarySlotsAvailable > 1,
          price: viewModel.sponsorInsights.secondaryPrice,
          benefits: ['Side logo placement', 'League page listing'],
        },
      ],
    } : null;

    return {
      leagueId: viewModel.id,
      name: viewModel.name,
      description: viewModel.description ?? '',
      info,
      runningRaces,
      sponsors,
      ownerSummary,
      adminSummaries,
      stewardSummaries,
      sponsorInsights,
    };
  }

  /**
   * Static helper for backward compatibility
   */
  static createViewData(viewModel: LeagueDetailPageViewModel, leagueId: string, isSponsor: boolean): LeagueDetailViewData {
    const presenter = new LeagueDetailPresenter();
    return presenter.present({ viewModel, leagueId, isSponsor });
  }
}