import { Trans, useLingui } from "@lingui/react/macro";
import type { SpaceBot, SpaceGroup } from "@rakazo/contracts";
import { BotAvatar, GroupAvatar } from "@rakazo/ui-web";
import type { RefObject } from "react";
import {
  needsYouChipLabel,
  rosterActivitySubtitle,
  rosterStatusDot,
} from "../../lib/agent-activity";
import { localizedPreview } from "../../lib/onboarding-copy";
import type { ContextMenuPosition } from "../BotContextMenu";
import { cleanRosterPreview, formatRosterTime } from "./roster-format";
import {
  rosterNameClass,
  rosterPreviewClass,
  rosterRowClass,
  rosterTimeClass,
  rosterUnreadDotClass,
} from "./roster-row-style";

export type SidebarChatItem = { kind: "bot"; chat: SpaceBot } | { kind: "group"; chat: SpaceGroup };

export type BotMenuRequest = {
  kind: "bot" | "group";
  id: string;
  position: ContextMenuPosition;
};

/** A bot in the conversations section: reorderable by drag or Alt+Arrow within its group. */
export function TeamRosterRow({
  item,
  groupBotIds,
  draggedBotId,
  onDraggedBotIdChange,
  onReorder,
  selected,
  onOpen,
  activeSpaceId,
  menuAnchor,
  onMenu,
}: {
  item: Extract<SidebarChatItem, { kind: "bot" }>;
  groupBotIds: string[];
  draggedBotId: string | null;
  onDraggedBotIdChange: (botId: string | null) => void;
  onReorder: (sourceId: string, targetId: string, groupBotIds: string[]) => void;
  selected: boolean;
  onOpen: () => void;
  activeSpaceId: string | undefined;
  menuAnchor: RefObject<HTMLElement | null>;
  onMenu: (menu: BotMenuRequest) => void;
}) {
  const { t } = useLingui();
  return (
    <button
      type="button"
      draggable={item.kind === "bot"}
      data-roster-bot-id={item.kind === "bot" ? item.chat.id : undefined}
      aria-keyshortcuts={item.kind === "bot" ? "Alt+ArrowUp Alt+ArrowDown" : undefined}
      onDragStart={(event) => {
        if (item.kind !== "bot") return;
        onDraggedBotIdChange(item.chat.id);
        event.dataTransfer.effectAllowed = "move";
        event.dataTransfer.setData("text/plain", item.chat.id);
      }}
      onDragOver={(event) => {
        if (item.kind === "bot" && draggedBotId && groupBotIds.includes(draggedBotId)) {
          event.preventDefault();
          event.dataTransfer.dropEffect = "move";
        }
      }}
      onDrop={(event) => {
        if (item.kind !== "bot" || !draggedBotId) return;
        event.preventDefault();
        onReorder(draggedBotId, item.chat.id, groupBotIds);
        onDraggedBotIdChange(null);
      }}
      onDragEnd={() => onDraggedBotIdChange(null)}
      onKeyDown={(event) => {
        if (
          item.kind !== "bot" ||
          !event.altKey ||
          (event.key !== "ArrowUp" && event.key !== "ArrowDown")
        )
          return;
        const index = groupBotIds.indexOf(item.chat.id);
        const target = groupBotIds[index + (event.key === "ArrowUp" ? -1 : 1)];
        if (!target) return;
        event.preventDefault();
        onReorder(item.chat.id, target, groupBotIds);
      }}
      aria-label={
        item.kind === "bot"
          ? t`${item.chat.name}, 1:1 conversation`
          : t`${item.chat.name}, group conversation`
      }
      onClick={onOpen}
      onContextMenu={(event) => {
        if (item.chat.spaceId !== activeSpaceId) return;
        event.preventDefault();
        menuAnchor.current = event.currentTarget;
        onMenu({
          kind: item.kind,
          id: item.chat.id,
          position: { x: event.clientX, y: event.clientY },
        });
      }}
      className={`${rosterRowClass(selected)} cursor-grab active:cursor-grabbing`}
      style={{
        opacity: draggedBotId === item.chat.id ? 0.55 : 1,
      }}
    >
      <div className="relative shrink-0">
        <BotAvatar
          color={item.chat.color}
          identity={item.chat.id}
          size={40}
          status={item.chat.status}
        />
        <span
          className={`absolute -bottom-0.5 -right-0.5 size-2.5 rounded-full border-2 border-sidebar ${
            rosterStatusDot(item.chat.status) === "idle" ? "bg-success" : "bg-warning animate-pulse"
          }`}
        />
      </div>
      <div className="min-w-0 flex-1">
        <div className="flex items-center justify-between gap-1.5">
          <div className="flex min-w-0 items-center gap-2 overflow-hidden">
            <span
              dir="auto"
              data-roster-bot-name=""
              className={`shrink-0 max-w-[170px] truncate text-ui-body tracking-tight ${rosterNameClass(
                item.chat.unread,
              )}`}
            >
              {item.chat.name}
            </span>
            {needsYouChipLabel(item.chat.status) ? (
              <span className="shrink-0 rounded-full border border-warning/30 bg-warning/10 px-2 py-0.5 text-ui-label font-medium text-foreground dark:text-warning">
                {needsYouChipLabel(item.chat.status)}
              </span>
            ) : item.chat.title ? (
              <span className="min-w-0 truncate rounded-full border border-border bg-muted px-2 py-0.5 text-ui-label font-medium text-muted-foreground">
                {item.chat.title}
              </span>
            ) : null}
            {item.chat.unread ? (
              <span className="sr-only">
                <Trans> (unread)</Trans>
              </span>
            ) : null}
          </div>
          <div className="flex shrink-0 items-center gap-1.5">
            <span className={rosterTimeClass}>{formatRosterTime(item.chat.updatedAt)}</span>
            {item.chat.unread ? <span aria-hidden="true" className={rosterUnreadDotClass} /> : null}
          </div>
        </div>
        <div
          dir="auto"
          className={`mt-0.5 truncate text-ui-body leading-snug ${rosterPreviewClass(
            item.chat.unread,
          )}`}
        >
          {rosterActivitySubtitle(item.chat.status, cleanRosterPreview(item.chat.preview))}
        </div>
      </div>
    </button>
  );
}

/** A conversation in the projects section; a project's main conversation has no chat actions. */
export function ProjectRosterRow({
  item,
  selected,
  onOpen,
  activeSpaceId,
  menuAnchor,
  onMenu,
}: {
  item: SidebarChatItem;
  selected: boolean;
  onOpen: () => void;
  activeSpaceId: string | undefined;
  menuAnchor: RefObject<HTMLElement | null>;
  onMenu: (menu: BotMenuRequest) => void;
}) {
  const { t } = useLingui();
  return (
    <button
      type="button"
      aria-label={
        item.kind === "bot"
          ? t`${item.chat.name}, 1:1 conversation`
          : item.chat.kind === "main"
            ? t`${item.chat.name}, main conversation`
            : t`${item.chat.name}, group conversation`
      }
      onClick={onOpen}
      onContextMenu={(event) => {
        // A project's main conversation has no chat actions.
        if (item.chat.spaceId !== activeSpaceId || item.chat.kind === "main") return;
        event.preventDefault();
        menuAnchor.current = event.currentTarget;
        onMenu({
          kind: item.kind,
          id: item.chat.id,
          position: { x: event.clientX, y: event.clientY },
        });
      }}
      className={rosterRowClass(selected)}
    >
      {item.kind === "bot" ? (
        <BotAvatar
          color={item.chat.color}
          identity={item.chat.id}
          size={40}
          status={item.chat.status}
        />
      ) : (
        <GroupAvatar members={(item.chat as any).members} size={40} />
      )}
      <div className="min-w-0 flex-1">
        <div className="flex items-center justify-between gap-1.5">
          <div className="flex min-w-0 items-center gap-2 overflow-hidden">
            <span
              dir="auto"
              className={`shrink-0 max-w-[170px] truncate text-ui-body tracking-tight ${rosterNameClass(
                item.chat.unread,
              )}`}
            >
              {item.chat.name}
            </span>
          </div>
          <div className="flex shrink-0 items-center gap-1.5">
            <span className={rosterTimeClass}>{formatRosterTime(item.chat.updatedAt)}</span>
            {item.chat.unread ? <span aria-hidden="true" className={rosterUnreadDotClass} /> : null}
          </div>
        </div>
        <div
          dir="auto"
          className={`mt-0.5 truncate text-ui-body leading-snug ${rosterPreviewClass(
            item.chat.unread,
          )}`}
        >
          {cleanRosterPreview(localizedPreview(item.chat))}
        </div>
      </div>
    </button>
  );
}