import { Trans } from "@lingui/react/macro";
import { cn } from "@rakazo/ui-web";
import { Activity } from "lucide-react";
import type { ReactNode } from "react";
import {
  presentTradingStatus,
  type TradingBotUiState,
  type TradingModeLabelId,
  type TradingModeSubtitle,
} from "../lib/trading-bot-status";

export function TradingModeIndicator({
  snapshot,
  className,
}: {
  snapshot: TradingBotUiState;
  className?: string;
}) {
  const presentation = presentTradingStatus(snapshot);
  return (
    <div
      role="status"
      aria-live="polite"
      aria-busy={presentation.label === "loading"}
      data-testid="trading-mode-status"
      data-trading-state={presentation.label}
      className={cn("flex min-w-0 items-center gap-3 rounded-xl px-2.5 py-2", className)}
    >
      <span
        className={cn(
          "grid h-[30px] w-[30px] shrink-0 place-items-center rounded-lg",
          presentation.tone === "live"
            ? "bg-warning/10 text-warning"
            : "bg-muted text-muted-foreground",
        )}
      >
        <Activity
          strokeWidth={1.8}
          aria-hidden="true"
          className={cn("size-icon-md", presentation.pulse && "animate-pulse")}
        />
      </span>
      <span className="min-w-0">
        <span className="block truncate text-ui-body font-medium text-foreground/90">
          <TradingModeLabel label={presentation.label} />
        </span>
        {presentation.subtitle ? (
          <span className="block truncate text-ui-body-sm text-muted-foreground/70">
            <TradingModeSubtitleText subtitle={presentation.subtitle} />
          </span>
        ) : null}
      </span>
    </div>
  );
}

function TradingModeLabel({ label }: { label: TradingModeLabelId }): ReactNode {
  switch (label) {
    case "loading":
      return <Trans>Trading</Trans>;
    case "unconfigured":
      return <Trans>Not configured</Trans>;
    case "offline":
      return <Trans>Offline</Trans>;
    case "unknown":
      return <Trans>Unknown</Trans>;
    case "live":
      return <Trans>Live Trading</Trans>;
    case "paper":
      return <Trans>Paper</Trans>;
    case "dry_run":
      return <Trans>Dry run</Trans>;
    default: {
      const exhaustive: never = label;
      return exhaustive;
    }
  }
}

function TradingModeSubtitleText({ subtitle }: { subtitle: TradingModeSubtitle }): ReactNode {
  switch (subtitle.type) {
    case "error":
      return subtitle.text;
    case "adapters":
      return subtitle.count === 1 ? (
        <Trans>1 adapter</Trans>
      ) : (
        <Trans>{subtitle.count} adapters</Trans>
      );
    default: {
      const exhaustive: never = subtitle;
      return exhaustive;
    }
  }
}