import { describe, it, expect } from 'vitest';
import { render, screen } from '@testing-library/react';
import { DraftGrid } from '../DraftGrid';
import { mockDraftSlots } from '~/test/fixtures/team';

function formatTime(seconds: number | undefined) {
  if (seconds === undefined) return '--:--';
  const mins = Math.floor(seconds / 60);
  const secs = seconds % 60;
  return `${mins}:${secs.toString().padStart(2, '0')}`;
}

describe('DraftGrid Component', () => {
  const mockGrid = [
    [
      { pickNumber: 1, participant: { id: 'p1', name: 'Player 1' }, sport: { id: 's1', name: 'NFL' }, team: { id: 't1', name: 'Team 1' } },
      null,
    ],
    [
      null,
      { pickNumber: 4, participant: { id: 'p2', name: 'Player 2' }, sport: { id: 's2', name: 'NBA' }, team: { id: 't2', name: 'Team 2' } },
    ],
  ];

  describe('Rendering', () => {
    it('should render team names in headers', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
        />
      );

      expect(screen.getByText('Team 1')).toBeInTheDocument();
      expect(screen.getByText('Team 2')).toBeInTheDocument();
    });

    it('should render draft grid with correct structure', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
        />
      );

      // Should have cells for all picks
      const cells = screen.getAllByTitle(/Overall Pick/i);
      expect(cells.length).toBeGreaterThan(0);
    });

    it('should display picked players', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
        />
      );

      expect(screen.getByText('Player 1')).toBeInTheDocument();
      expect(screen.getByText('NFL')).toBeInTheDocument();
      expect(screen.getByText('Player 2')).toBeInTheDocument();
      expect(screen.getByText('NBA')).toBeInTheDocument();
    });
  });

  describe('Current Pick Highlighting', () => {
    it('should show "Up Next" when draft is pre_draft', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
          seasonStatus="pre_draft"
        />
      );

      expect(screen.getByText('Up Next')).toBeInTheDocument();
    });

    it('should show "Paused Draft" when draft is paused', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
          seasonStatus="draft"
          draftPaused={true}
        />
      );

      expect(screen.getByText('Paused Draft')).toBeInTheDocument();
    });

    it('should show "On The Clock" when draft is active', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
          seasonStatus="draft"
          draftPaused={false}
        />
      );

      expect(screen.getByText('On The Clock')).toBeInTheDocument();
    });

    it('should apply correct styling to current pick', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={2}
          seasonStatus="draft"
          draftPaused={false}
        />
      );

      const currentPickCell = screen.getByText('On The Clock').closest('.border-transparent');
      expect(currentPickCell).toHaveClass('bg-muted/80');
      expect(currentPickCell).toHaveClass('border-transparent');
    });
  });

  describe('Pick Numbering', () => {
    it('should display round and pick numbers', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={1}
        />
      );

      // Should show format like "1.01", "1.02", etc.
      expect(screen.getByText(/1\.01/)).toBeInTheDocument();
    });
  });

  describe('Optional Features', () => {
    it('should render with title when provided', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={1}
          title="Draft Board"
        />
      );

      expect(screen.getByText('Draft Board')).toBeInTheDocument();
    });

    it('should display timers when provided', () => {
      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={mockGrid}
          currentPick={1}
          teamTimers={{ 'team-1': 120, 'team-2': 90 }}
          formatTime={formatTime}
        />
      );

      expect(screen.getByText('2:00')).toBeInTheDocument();
      expect(screen.getByText('1:30')).toBeInTheDocument();
    });
  });

  describe('Snake Draft Order', () => {
    it('should reverse picks on even rounds', () => {
      const snakeGrid = [
        [
          { pickNumber: 1, participant: { id: 'p1', name: 'Pick 1' }, sport: { id: 's1', name: 'NFL' }, team: { id: 't1', name: 'Team 1' } },
          { pickNumber: 2, participant: { id: 'p2', name: 'Pick 2' }, sport: { id: 's2', name: 'NBA' }, team: { id: 't2', name: 'Team 2' } },
        ],
        [
          { pickNumber: 3, participant: { id: 'p3', name: 'Pick 4' }, sport: { id: 's1', name: 'MLB' }, team: { id: 't2', name: 'Team 2' } },
          { pickNumber: 4, participant: { id: 'p4', name: 'Pick 3' }, sport: { id: 's2', name: 'NHL' }, team: { id: 't1', name: 'Team 1' } },
        ],
      ];

      render(
        <DraftGrid
          draftSlots={mockDraftSlots}
          draftGrid={snakeGrid}
          currentPick={5}
        />
      );

      // All picks should be visible
      expect(screen.getByText('Pick 1')).toBeInTheDocument();
      expect(screen.getByText('Pick 2')).toBeInTheDocument();
      expect(screen.getByText('Pick 3')).toBeInTheDocument();
      expect(screen.getByText('Pick 4')).toBeInTheDocument();
    });
  });
});
