import { format } from "date-fns";
import { Activity, ChevronRight, Crown } from "lucide-react";
import { Link } from "react-router";
import { GradientIcon } from "~/components/ui/GradientIcon";
import { formatAuditDetail } from "~/lib/audit-log-display";
import type { AuditLogEntry } from "~/models/audit-log";

// ─── Types ────────────────────────────────────────────────────────────────────

export interface CommissionerEntry {
  id: string;
  userId: string;
}

export interface CommissionersPanelProps {
  commissioners: CommissionerEntry[];
  /** Maps userId → display name */
  commissionerMap: Record<string, string | null>;
  currentUserId: string | null;
  /** Used to determine whether a commissioner also has a team in the league. */
  teams: Array<{ id: string; ownerId: string | null }>;
  activityEntries: AuditLogEntry[];
  /** URL for the full audit log — shown only when there are activity entries. */
  auditLogUrl: string;
}

// ─── Sub-components ───────────────────────────────────────────────────────────

function CommissionerRow({
  name,
  isSelf,
  hasTeam,
}: {
  name: string;
  isSelf: boolean;
  hasTeam: boolean;
}) {
  return (
    <div className="flex items-center gap-2 min-w-0 py-1.5 border-b last:border-0">
      <p className="font-medium truncate min-w-0 flex-1">
        {name}
        {isSelf && (
          <span className="ml-2 text-xs text-primary">(You)</span>
        )}
      </p>
      {!hasTeam && (
        <p className="text-xs text-muted-foreground shrink-0">No team</p>
      )}
    </div>
  );
}

// ─── Public API ───────────────────────────────────────────────────────────────

export function CommissionersPanel({
  commissioners,
  commissionerMap,
  currentUserId,
  teams,
  activityEntries,
  auditLogUrl,
}: CommissionersPanelProps) {
  return (
    <div className="space-y-14">
      {/* Commissioners */}
      <div>
        <div className="flex items-center gap-2 mb-4">
          <GradientIcon icon={Crown} className="h-5 w-5 shrink-0" />
          <span className="text-xl font-bold leading-none tracking-tight">Commissioners</span>
        </div>
        <div>
          {commissioners.map((commissioner) => (
            <CommissionerRow
              key={commissioner.id}
              name={commissionerMap[commissioner.userId] || "Unknown User"}
              isSelf={commissioner.userId === currentUserId}
              hasTeam={teams.some((t) => t.ownerId === commissioner.userId)}
            />
          ))}
        </div>
      </div>

      {/* Commish Activity */}
      {activityEntries.length > 0 && (
        <div>
          <div className="flex items-center justify-between mb-4">
            <div className="flex items-center gap-2">
              <GradientIcon icon={Activity} className="h-5 w-5 shrink-0" />
              <span className="text-xl font-bold leading-none tracking-tight">Commish Activity</span>
            </div>
            <Link
              to={auditLogUrl}
              className="flex items-center gap-0.5 text-xs font-semibold uppercase tracking-wide text-electric hover:underline"
            >
              View All
              <ChevronRight className="h-3.5 w-3.5" />
            </Link>
          </div>
          <ul className="space-y-3">
            {activityEntries.map((entry) => (
              <li key={entry.id} className="flex items-start gap-3 text-sm">
                <span className="text-muted-foreground whitespace-nowrap shrink-0">
                  {format(new Date(entry.createdAt), "MMM d, HH:mm")}
                </span>
                <span className="min-w-0">
                  <span className="font-medium">
                    {entry.actorDisplayName ?? entry.actorUserId}
                  </span>
                  {" — "}
                  <span className="text-muted-foreground">
                    {formatAuditDetail(entry)}
                  </span>
                </span>
              </li>
            ))}
          </ul>
        </div>
      )}
    </div>
  );
}