'use client';

import Link from 'next/link';
import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui';
import { Badge } from '@/components/ui';
import { getGravatarUrl } from '@/lib/gravatar';
import type { OKR, KeyResult, OKRStatus, KeyResultStatus } from '@/lib/types';
import { OKR_STATUS_LABELS, KEY_RESULT_STATUS_LABELS } from '@/lib/types';

// Helper functions for status colors
function getOKRStatusColor(status: OKRStatus): { bg: string; color: string } {
  switch (status) {
    case 'NOT_STARTED':
      return {
        bg: 'color-mix(in srgb, #6b7280 15%, transparent)', // gray-500
        color: '#6b7280',
      };
    case 'IN_PROGRESS':
      return {
        bg: 'color-mix(in srgb, #3b82f6 15%, transparent)', // blue-500
        color: '#3b82f6',
      };
    case 'COMPLETED':
      return {
        bg: 'color-mix(in srgb, #10b981 15%, transparent)', // green-500 (success)
        color: '#10b981',
      };
    case 'CANCELLED':
      return {
        bg: 'color-mix(in srgb, #ef4444 15%, transparent)', // red-500 (destructive)
        color: '#ef4444',
      };
    default:
      return {
        bg: 'color-mix(in srgb, #6b7280 15%, transparent)',
        color: '#6b7280',
      };
  }
}

function getKeyResultStatusColor(status: KeyResultStatus): { bg: string; color: string } {
  switch (status) {
    case 'NOT_STARTED':
      return {
        bg: 'color-mix(in srgb, #6b7280 12%, transparent)', // gray-500
        color: '#6b7280',
      };
    case 'IN_PROGRESS':
      return {
        bg: 'color-mix(in srgb, #3b82f6 12%, transparent)', // blue-500
        color: '#3b82f6',
      };
    case 'COMPLETED':
      return {
        bg: 'color-mix(in srgb, #10b981 12%, transparent)', // green-500
        color: '#10b981',
      };
    case 'AT_RISK':
      return {
        bg: 'color-mix(in srgb, #f59e0b 12%, transparent)', // amber-500 (orange/yellow)
        color: '#f59e0b',
      };
    default:
      return {
        bg: 'color-mix(in srgb, #6b7280 12%, transparent)',
        color: '#6b7280',
      };
  }
}

interface OKRCardProps {
  okr: OKR & { teamMember?: { user: { id: string; email: string; name: string | null } } };
  teamId: string;
}

export function OKRCard({ okr, teamId }: OKRCardProps) {
  const progress = okr.progress || 0;
  const progressColor =
    progress >= 75 ? 'var(--success)' : progress >= 25 ? 'var(--accent)' : 'var(--destructive)';

  return (
    <Link href={`/teams/${teamId}/okrs/${okr.id}`}>
      <Card hover className="h-full">
        <CardHeader>
          <div className="flex items-start justify-between">
            <div className="flex-1">
              <CardTitle className="flex items-center gap-2">
                <span className="text-xl">🎯</span>
                {okr.objective}
              </CardTitle>
              {okr.teamMember && (
                <div className="mt-2 flex items-center gap-2">
                  {/* eslint-disable-next-line @next/next/no-img-element */}
                  <img
                    src={getGravatarUrl(okr.teamMember.user.email, 96)}
                    alt={okr.teamMember.user.name || okr.teamMember.user.email}
                    width={24}
                    height={24}
                    className="rounded-full"
                  />
                  <span className="text-sm text-muted">
                    {okr.teamMember.user.name || okr.teamMember.user.email}
                  </span>
                </div>
              )}
            </div>
            <Badge
              style={{
                backgroundColor: 'color-mix(in srgb, var(--purple) 15%, transparent)',
                color: 'var(--purple)',
              }}
            >
              {okr.period}
            </Badge>
          </div>
        </CardHeader>
        <CardContent>
          <div className="space-y-3">
            {/* Progress Bar */}
            <div>
              <div className="mb-1 flex items-center justify-between text-sm">
                <span className="text-muted">Progression</span>
                <span className="font-medium" style={{ color: progressColor }}>
                  {progress}%
                </span>
              </div>
              <div className="h-2 w-full overflow-hidden rounded-full bg-card-column">
                <div
                  className="h-full transition-all"
                  style={{
                    width: `${progress}%`,
                    backgroundColor: progressColor,
                  }}
                />
              </div>
            </div>

            {/* Status */}
            <div className="flex items-center gap-2">
              <span className="text-sm text-muted">Statut:</span>
              <Badge style={getOKRStatusColor(okr.status)}>
                {OKR_STATUS_LABELS[okr.status]}
              </Badge>
            </div>

            {/* Key Results List */}
            {okr.keyResults && okr.keyResults.length > 0 && (
              <div className="space-y-2 pt-2 border-t border-border">
                <div className="text-xs font-medium text-muted uppercase tracking-wide">
                  Key Results ({okr.keyResults.length})
                </div>
                <div className="space-y-2">
                  {okr.keyResults
                    .sort((a, b) => a.order - b.order)
                    .map((kr: KeyResult) => {
                      const krProgress = kr.targetValue > 0 ? (kr.currentValue / kr.targetValue) * 100 : 0;
                      const krProgressColor =
                        krProgress >= 100
                          ? 'var(--success)'
                          : krProgress >= 50
                            ? 'var(--accent)'
                            : 'var(--destructive)';

                      return (
                        <div key={kr.id} className="space-y-1">
                          <div className="flex items-start justify-between gap-2">
                            <span className="text-sm text-foreground flex-1 line-clamp-2">{kr.title}</span>
                            <Badge
                              style={{
                                ...getKeyResultStatusColor(kr.status),
                                fontSize: '10px',
                                padding: '2px 6px',
                              }}
                            >
                              {KEY_RESULT_STATUS_LABELS[kr.status]}
                            </Badge>
                          </div>
                          <div className="space-y-1">
                            <div className="flex items-center justify-between text-xs text-muted">
                              <span>
                                {kr.currentValue} / {kr.targetValue} {kr.unit}
                              </span>
                              <span className="font-medium" style={{ color: krProgressColor }}>
                                {Math.round(krProgress)}%
                              </span>
                            </div>
                            <div className="h-1.5 w-full overflow-hidden rounded-full bg-card-column">
                              <div
                                className="h-full transition-all"
                                style={{
                                  width: `${Math.min(krProgress, 100)}%`,
                                  backgroundColor: krProgressColor,
                                }}
                              />
                            </div>
                          </div>
                        </div>
                      );
                    })}
                </div>
              </div>
            )}
          </div>
        </CardContent>
      </Card>
    </Link>
  );
}