import { DashboardKpiRow } from '@/components/dashboard/DashboardKpiRow';
import { RecentActivityTable, type ActivityItem } from '@/components/dashboard/RecentActivityTable';
import { TelemetryPanel } from '@/components/dashboard/TelemetryPanel';
import type { DashboardViewData } from '@/lib/view-data/DashboardViewData';
import { routes } from '@/lib/routing/RouteConfig';
import { useRouter } from 'next/navigation';
import { Box } from '@/ui/Box';
import { Button } from '@/ui/Button';
import { Grid } from '@/ui/Grid';
import { Stack } from '@/ui/Stack';
import { Text } from '@/ui/Text';

interface DashboardTemplateProps {
  viewData: DashboardViewData;
  onNavigateToRaces: () => void;
}

/**
 * DashboardTemplate
 * 
 * Redesigned as a "Telemetry Workspace" following the Precision Racing Minimal theme.
 * Composes semantic dashboard components into a high-density data environment.
 * Complies with architectural constraints by using UI primitives.
 */
export function DashboardTemplate({ 
  viewData,
  onNavigateToRaces,
}: DashboardTemplateProps) {
  const router = useRouter();
  const {
    currentDriver,
    nextRace,
    upcomingRaces,
    leagueStandings,
    feedItems,
    activeLeaguesCount,
    hasLeagueStandings,
    hasFeedItems,
  } = viewData;

  const kpiItems = [
    { label: 'Rating', value: currentDriver.rating, intent: 'primary' as const },
    { label: 'Rank', value: `#${currentDriver.rank}`, intent: 'warning' as const },
    { label: 'Starts', value: currentDriver.totalRaces },
    { label: 'Wins', value: currentDriver.wins, intent: 'success' as const },
    { label: 'Podiums', value: currentDriver.podiums, intent: 'warning' as const },
    { label: 'Leagues', value: activeLeaguesCount },
  ];

  const activityItems: ActivityItem[] = feedItems.map(item => ({
    id: item.id,
    type: item.type.toUpperCase(),
    description: item.headline,
    timestamp: item.formattedTime,
    status: item.type === 'race_result' ? 'success' : 'info'
  }));

  return (
    <Stack gap={6}>
      {/* KPI Overview */}
      <DashboardKpiRow items={kpiItems} data-testid="dashboard-stats" />

      <Grid responsiveGridCols={{ base: 1, lg: 12 }} gap={6}>
        {/* Main Content Column */}
        <Box responsiveColSpan={{ base: 1, lg: 8 }}>
          <Stack direction="col" gap={6}>
            {nextRace && (
              <TelemetryPanel title="Active Session" data-testid="next-race-section">
                <Box display="flex" alignItems="center" justifyContent="between">
                  <Box>
                    <Text size="xs" variant="low" mb={1} block>Next Event</Text>
                    <Text size="lg" weight="bold" block data-testid="next-race-track">{nextRace.track}</Text>
                    <Text size="xs" variant="primary" font="mono" block data-testid="next-race-car">{nextRace.car}</Text>
                  </Box>
                  <Box textAlign="right">
                    <Text size="xs" variant="low" mb={1} block data-testid="next-race-time">{nextRace.formattedDate} @ {nextRace.formattedTime}</Text>
                    <Text size="xl" font="mono" weight="bold" variant="warning" block data-testid="next-race-countdown">{nextRace.timeUntil}</Text>
                    <Text size="xs" variant="low" block>{nextRace.formattedDate} @ {nextRace.formattedTime}</Text>
                  </Box>
                </Box>
              </TelemetryPanel>
            )}

            <TelemetryPanel title="Recent Activity" data-testid="activity-feed-section">
              {hasFeedItems ? (
                <RecentActivityTable items={activityItems} />
              ) : (
                <Box py={8} textAlign="center" data-testid="activity-empty">
                  <Text italic variant="low">No recent activity recorded.</Text>
                </Box>
              )}
            </TelemetryPanel>
          </Stack>
        </Box>

        {/* Sidebar Column */}
        <Box responsiveColSpan={{ base: 1, lg: 4 }}>
          <Stack direction="col" gap={6}>
            <TelemetryPanel title="Championship Standings" data-testid="championship-standings-section">
              {hasLeagueStandings ? (
                <Stack direction="col" gap={3}>
                  {leagueStandings.map((standing) => (
                    <Box
                      key={standing.leagueId}
                      display="flex"
                      alignItems="center"
                      justifyContent="between"
                      borderBottom
                      borderColor="var(--ui-color-border-muted)"
                      pb={2}
                      data-testid={`league-standing-${standing.leagueId}`}
                      cursor="pointer"
                      onClick={() => router.push(routes.league.detail(standing.leagueId))}
                    >
                      <Box data-testid="league-standing-link">
                        <Text size="xs" weight="bold" truncate block maxWidth="180px">{standing.leagueName}</Text>
                        <Text size="xs" variant="low" block>Pos: {standing.position} / {standing.totalDrivers}</Text>
                      </Box>
                      <Text size="sm" font="mono" weight="bold" variant="primary">{standing.points} PTS</Text>
                    </Box>
                  ))}
                </Stack>
              ) : (
                <Box py={4} textAlign="center" data-testid="standings-empty">
                  <Text italic variant="low">No active championships.</Text>
                </Box>
              )}
            </TelemetryPanel>

            <TelemetryPanel title="Upcoming Schedule" data-testid="upcoming-races-section">
              <Stack direction="col" gap={4}>
                {upcomingRaces.length > 0 ? (
                  upcomingRaces.slice(0, 3).map((race) => (
                    <Box
                      key={race.id}
                      cursor="pointer"
                      data-testid={`upcoming-race-${race.id}`}
                      onClick={() => router.push(routes.race.detail(race.id))}
                    >
                      <Box display="flex" justifyContent="between" alignItems="start" mb={1} data-testid="upcoming-race-link">
                        <Text size="xs" weight="bold">{race.track}</Text>
                        <Text size="xs" font="mono" variant="low">{race.timeUntil}</Text>
                      </Box>
                      <Box display="flex" justifyContent="between">
                        <Text size="xs" variant="low">{race.car}</Text>
                        <Text size="xs" variant="low">{race.formattedDate}</Text>
                      </Box>
                    </Box>
                  ))
                ) : (
                  <Box py={4} textAlign="center" data-testid="upcoming-races-empty">
                    <Text italic variant="low">No upcoming races.</Text>
                  </Box>
                )}
                <Button
                  variant="secondary"
                  fullWidth
                  onClick={onNavigateToRaces}
                  data-testid="view-full-schedule-link"
                >
                  <Text size="xs" weight="bold" uppercase letterSpacing="widest">View Full Schedule</Text>
                </Button>
              </Stack>
            </TelemetryPanel>
          </Stack>
        </Box>
      </Grid>
    </Stack>
  );
}