import { type KeyboardEvent, type MouseEvent } from "react";
import { Shield } from "lucide-react";
import { DashboardSection } from "./DashboardSection";
import { DashboardEmptyState } from "./DashboardEmptyState";
import { Markdown } from "@/components/atoms/Markdown";
import { cn } from "@/lib/utils";
import type { ActivityEventRead } from "@/api/generated/model";

export type ActivityEvent = ActivityEventRead;

interface RecentActivitySectionProps {
  events: ActivityEvent[];
  feedHref: string;
  onRowClick: (e: MouseEvent<HTMLDivElement>, href: string) => void;
  onRowKeyDown: (e: KeyboardEvent<HTMLDivElement>, href: string) => void;
  buildHref: (event: ActivityEvent) => string;
  formatRelative: (ts: string) => string;
  formatTimestamp: (ts: string) => string;
}

const eventTone = (eventType: string) => {
  const normalized = eventType.toLowerCase();
  if (normalized.includes("error") || normalized.includes("fail")) {
    return {
      rail: "border-l-[color:var(--danger)]",
      dot: "bg-[color:var(--danger)]",
      row: "hover:border-[color:rgba(248,113,113,0.35)] hover:bg-[color:rgba(248,113,113,0.08)]",
    };
  }
  if (normalized.includes("approval") || normalized.includes("review")) {
    return {
      rail: "border-l-[color:var(--warning)]",
      dot: "bg-[color:var(--warning)]",
      row: "hover:border-[color:rgba(251,191,36,0.35)] hover:bg-[color:rgba(251,191,36,0.08)]",
    };
  }
  if (normalized.includes("complete") || normalized.includes("sync")) {
    return {
      rail: "border-l-[color:var(--success)]",
      dot: "bg-[color:var(--success)]",
      row: "hover:border-[color:rgba(52,211,153,0.35)] hover:bg-[color:rgba(52,211,153,0.08)]",
    };
  }
  return {
    rail: "border-l-[color:var(--accent)]",
    dot: "bg-[color:var(--accent)]",
    row: "hover:border-[color:rgba(96,165,250,0.35)] hover:bg-[color:rgba(96,165,250,0.08)]",
  };
};

export function RecentActivitySection({
  events,
  feedHref,
  onRowClick,
  onRowKeyDown,
  buildHref,
  formatRelative,
  formatTimestamp,
}: RecentActivitySectionProps) {
  return (
    <DashboardSection
      title="Recent Activity"
      action={{ label: "Open feed", href: feedHref }}
      tone="accent"
    >
      <div className="max-h-[310px] space-y-2 overflow-x-hidden overflow-y-auto pr-1">
        {events.length > 0 ? (
          events.map((event) => {
            const href = buildHref(event);
            const tone = eventTone(event.event_type);
            return (
              <div
                key={event.id}
                role="link"
                tabIndex={0}
                aria-label={`Open related context for ${event.event_type} activity`}
                onClick={(e) => onRowClick(e, href)}
                onKeyDown={(e) => onRowKeyDown(e, href)}
                className={cn(
                  "cursor-pointer overflow-hidden rounded-lg border border-l-4 border-[color:var(--border)] bg-[color:var(--surface-muted)] px-3 py-2 transition focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-[color:var(--accent)]",
                  tone.rail,
                  tone.row,
                )}
              >
                <div className="flex items-start justify-between gap-3">
                  <div className="min-w-0 flex-1 overflow-hidden">
                    <div className="break-words text-sm font-medium text-strong [&_ol]:mb-0 [&_p]:mb-0 [&_pre]:my-1 [&_pre]:max-w-full [&_pre]:overflow-x-auto [&_ul]:mb-0">
                      <Markdown
                        content={event.message?.trim() || event.event_type}
                        variant="comment"
                      />
                    </div>
                    <p className="mt-0.5 text-xs uppercase tracking-wider text-muted">
                      <span
                        className={cn(
                          "mr-2 inline-block h-1.5 w-1.5 rounded-full",
                          tone.dot,
                        )}
                      />
                      {event.event_type}
                    </p>
                  </div>
                  <div className="shrink-0 text-right text-[11px] text-muted">
                    <p>{formatRelative(event.created_at)}</p>
                    <p>{formatTimestamp(event.created_at)}</p>
                  </div>
                </div>
              </div>
            );
          })
        ) : (
          <DashboardEmptyState
            icon={<Shield className="h-5 w-5" />}
            message="No activity yet"
            sub="Activity appears here when events are emitted."
          />
        )}
      </div>
    </DashboardSection>
  );
}