'use client';

import type { LeagueScoringConfigDTO } from '@gridpilot/racing/application/dto/LeagueScoringConfigDTO';
import { Trophy, Clock, Target, Zap, Info } from 'lucide-react';

interface LeagueScoringTabProps {
  scoringConfig: LeagueScoringConfigDTO | null;
  practiceMinutes?: number;
  qualifyingMinutes?: number;
  sprintRaceMinutes?: number;
  mainRaceMinutes?: number;
}

export default function LeagueScoringTab({
  scoringConfig,
  practiceMinutes,
  qualifyingMinutes,
  sprintRaceMinutes,
  mainRaceMinutes,
}: LeagueScoringTabProps) {
  if (!scoringConfig) {
    return (
      <div className="p-12 text-center">
        <div className="w-16 h-16 mx-auto mb-4 rounded-full bg-purple-500/10 flex items-center justify-center">
          <Target className="w-8 h-8 text-purple-400" />
        </div>
        <h3 className="text-lg font-semibold text-white mb-2">No Scoring System</h3>
        <p className="text-sm text-gray-400">
          Scoring configuration is not available for this league yet
        </p>
      </div>
    );
  }

  const primaryChampionship =
    scoringConfig.championships.find((c) => c.type === 'driver') ??
    scoringConfig.championships[0];

  const resolvedPractice = practiceMinutes ?? 20;
  const resolvedQualifying = qualifyingMinutes ?? 30;
  const resolvedSprint = sprintRaceMinutes;
  const resolvedMain = mainRaceMinutes ?? 40;

  return (
    <div className="space-y-6">
      <div className="border-b border-charcoal-outline pb-4 space-y-3">
        <div className="flex items-center gap-3">
          <div className="w-10 h-10 rounded-full bg-primary-blue/10 flex items-center justify-center">
            <Trophy className="w-5 h-5 text-primary-blue" />
          </div>
          <div>
            <h2 className="text-xl font-semibold text-white">
              Scoring overview
            </h2>
            <p className="text-sm text-gray-400">
              {scoringConfig.gameName}{' '}
              {scoringConfig.scoringPresetName
                ? `• ${scoringConfig.scoringPresetName}`
                : '• Custom scoring'}{' '}
              • {scoringConfig.dropPolicySummary}
            </p>
          </div>
        </div>

        {primaryChampionship && (
          <div className="space-y-3 pt-3">
            <div className="flex items-center gap-2">
              <Clock className="w-4 h-4 text-gray-400" />
              <h3 className="text-sm font-medium text-gray-200">
                Weekend structure & timings
              </h3>
            </div>
            <div className="flex flex-wrap gap-2 text-xs">
              {primaryChampionship.sessionTypes.map((session) => (
                <span
                  key={session}
                  className="px-3 py-1 rounded-full bg-primary-blue/10 text-primary-blue border border-primary-blue/20 font-medium"
                >
                  {session}
                </span>
              ))}
            </div>
            <div className="grid grid-cols-2 sm:grid-cols-4 gap-3">
              <div className="p-2 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
                <p className="text-xs text-gray-400 mb-1">Practice</p>
                <p className="text-sm font-medium text-white">
                  {resolvedPractice ? `${resolvedPractice} min` : '—'}
                </p>
              </div>
              <div className="p-2 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
                <p className="text-xs text-gray-400 mb-1">Qualifying</p>
                <p className="text-sm font-medium text-white">{resolvedQualifying} min</p>
              </div>
              <div className="p-2 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
                <p className="text-xs text-gray-400 mb-1">Sprint</p>
                <p className="text-sm font-medium text-white">
                  {resolvedSprint ? `${resolvedSprint} min` : '—'}
                </p>
              </div>
              <div className="p-2 rounded-lg bg-iron-gray/50 border border-charcoal-outline">
                <p className="text-xs text-gray-400 mb-1">Main race</p>
                <p className="text-sm font-medium text-white">{resolvedMain} min</p>
              </div>
            </div>
          </div>
        )}
      </div>

      {scoringConfig.championships.map((championship) => (
        <div
          key={championship.id}
          className="border border-charcoal-outline rounded-lg bg-iron-gray/40 p-4 space-y-4"
        >
          <div className="flex items-center justify-between gap-4">
            <div>
              <h3 className="text-lg font-semibold text-white">
                {championship.name}
              </h3>
              <p className="text-xs uppercase tracking-wide text-gray-500">
                {championship.type === 'driver'
                  ? 'Driver championship'
                  : championship.type === 'team'
                  ? 'Team championship'
                  : championship.type === 'nations'
                  ? 'Nations championship'
                  : 'Trophy championship'}
              </p>
            </div>
            {championship.sessionTypes.length > 0 && (
              <div className="flex flex-wrap gap-1 justify-end">
                {championship.sessionTypes.map((session) => (
                  <span
                    key={session}
                    className="px-2 py-0.5 rounded-full bg-charcoal-outline/60 text-xs text-gray-200"
                  >
                    {session}
                  </span>
                ))}
              </div>
            )}
          </div>

          {championship.pointsPreview.length > 0 && (
            <div>
              <h4 className="text-xs font-semibold text-gray-400 mb-2">
                Points preview (top positions)
              </h4>
              <div className="overflow-x-auto">
                <table className="w-full text-xs">
                  <thead>
                    <tr className="border-b border-charcoal-outline/60">
                      <th className="text-left py-2 pr-2 text-gray-400">
                        Session
                      </th>
                      <th className="text-left py-2 px-2 text-gray-400">
                        Position
                      </th>
                      <th className="text-left py-2 px-2 text-gray-400">
                        Points
                      </th>
                    </tr>
                  </thead>
                  <tbody>
                    {championship.pointsPreview.map((row, index) => (
                      <tr
                        key={`${row.sessionType}-${row.position}-${index}`}
                        className="border-b border-charcoal-outline/30"
                      >
                        <td className="py-1.5 pr-2 text-gray-200">
                          {row.sessionType}
                        </td>
                        <td className="py-1.5 px-2 text-gray-200">
                          P{row.position}
                        </td>
                        <td className="py-1.5 px-2 text-white">
                          {row.points}
                        </td>
                      </tr>
                    ))}
                  </tbody>
                </table>
              </div>
            </div>
          )}

          {championship.bonusSummary.length > 0 && (
            <div className="p-3 bg-yellow-500/5 border border-yellow-500/20 rounded-lg">
              <div className="flex items-center gap-2 mb-2">
                <Zap className="w-4 h-4 text-yellow-400" />
                <h4 className="text-xs font-semibold text-yellow-400">
                  Bonus points
                </h4>
              </div>
              <ul className="list-disc list-inside text-xs text-gray-300 space-y-1">
                {championship.bonusSummary.map((item, index) => (
                  <li key={index}>{item}</li>
                ))}
              </ul>
            </div>
          )}

          <div className="p-3 bg-primary-blue/5 border border-primary-blue/20 rounded-lg">
            <div className="flex items-center gap-2 mb-2">
              <Info className="w-4 h-4 text-primary-blue" />
              <h4 className="text-xs font-semibold text-primary-blue">
                Drop score policy
              </h4>
            </div>
            <p className="text-xs text-gray-300">
              {championship.dropPolicyDescription}
            </p>
          </div>
        </div>
      ))}
    </div>
  );
}