import { content } from "@deadhead/content";
import { deliveryXp, loanerModel } from "@deadhead/sim";
import { useQuery } from "@tanstack/react-query";
import { useApi } from "../api/context";
import { useClock } from "../clock/clock";
import { formatCredits, formatDuration, locationName, cargoName } from "../format";
import { distanceAt, tripRealMs } from "../game";
import { errorMessage, useGameAction, useLoadedPlayer } from "../state/actions";

export const TUTORIAL_BOARD_KEY = ["board", "tutorial"] as const;

/** The company board during the tutorial (Step 9.3). */
export function TutorialBoard() {
  const api = useApi();
  const state = useLoadedPlayer();
  const now = useClock((s) => s.now);
  const board = useQuery({
    queryKey: TUTORIAL_BOARD_KEY,
    queryFn: () => api.call("getTutorialBoard", {}),
  });
  const fly = useGameAction("createDispatch");
  const runInFlight = state.tutorial?.runInFlight ?? false;
  const loaner = loanerModel(content);
  const firstRun = (state.tutorial?.runsCompleted ?? 0) === 0;

  if (board.isPending) return <p className="p-4 text-slate-400">Loading contracts…</p>;
  if (board.isError) {
    return (
      <div role="alert" className="p-4 text-red-400">
        Could not load contracts.{" "}
        <button type="button" className="underline" onClick={() => void board.refetch()}>
          Retry
        </button>
      </div>
    );
  }

  return (
    <div className="space-y-3">
      {firstRun && (
        <div
          aria-label="Intro"
          className="rounded-lg border border-amber-500/40 bg-amber-500/10 p-3 text-sm"
        >
          <p className="font-semibold text-amber-200">Halvorsen Lunar Freight needs a pilot.</p>
          <p className="text-slate-300">Their ship, your hands. Get the crates to the Moon.</p>
        </div>
      )}
      <p className="text-sm text-slate-400">
        Company runs in the loaner {loaner.name}. You keep a share of each payout.
      </p>
      {runInFlight && (
        <p className="rounded-lg bg-slate-800 p-2 text-sm">
          Your run is in flight. Wait for it to land.
        </p>
      )}
      {fly.isError && (
        <p role="alert" className="text-sm text-red-400">
          {errorMessage(fly.error)}
        </p>
      )}
      {board.data.contracts.length === 0 && (
        <p className="text-sm text-slate-400">No company runs left this period. Check back soon.</p>
      )}
      <ul className="space-y-2">
        {board.data.contracts.map((contract, index) => {
          // On the first run, suggest the lightest (fastest) contract.
          const suggested = firstRun && index === 0;
          const scripted = contract.scriptedId
            ? content.scriptedTutorialContracts.find((s) => s.id === contract.scriptedId)
            : undefined;
          const tripMs = tripRealMs(
            loaner,
            contract.originId,
            contract.destinationId,
            contract.massTonnes,
            now,
          );
          const xp = deliveryXp(
            distanceAt(contract.originId, contract.destinationId, now),
            contract.tier,
            content.config,
          );
          const border = scripted
            ? "border-fuchsia-500 bg-fuchsia-500/10"
            : suggested
              ? "border-amber-400 ring-1 ring-amber-400"
              : "border-slate-800";
          return (
            <li
              key={contract.id}
              data-suggested={suggested || undefined}
              data-scripted={scripted ? true : undefined}
              className={`rounded-lg border p-3 ${border}`}
            >
              <div className="flex items-baseline justify-between gap-2">
                <span className="font-medium">
                  {scripted ? (
                    <span className="text-fuchsia-300">{scripted.name}</span>
                  ) : (
                    <>
                      {locationName(contract.originId)} → {locationName(contract.destinationId)}
                    </>
                  )}
                  {suggested && (
                    <span className="ml-2 rounded bg-amber-500/20 px-1.5 py-0.5 text-xs text-amber-300">
                      Suggested
                    </span>
                  )}
                </span>
                <span className="text-sm text-slate-400">
                  {cargoName(contract.cargoTypeId)} · {contract.massTonnes} t
                </span>
              </div>
              {scripted && (
                <p className="mt-1 text-xs text-fuchsia-200">
                  {locationName(contract.originId)} → {locationName(contract.destinationId)} ·
                  double pay, no questions asked
                </p>
              )}
              <div className="mt-2 flex items-center justify-between gap-2">
                <dl className="grid flex-1 grid-cols-3 text-sm">
                  <div>
                    <dt className="text-xs text-slate-400">Pay</dt>
                    <dd aria-label="Pay" className="font-semibold tabular-nums text-emerald-400">
                      {formatCredits(contract.payout)}
                    </dd>
                  </div>
                  <div>
                    <dt className="text-xs text-slate-400">Time</dt>
                    <dd aria-label="Trip time" className="tabular-nums">
                      {formatDuration(tripMs)}
                    </dd>
                  </div>
                  <div>
                    <dt className="text-xs text-slate-400">XP</dt>
                    <dd aria-label="XP" className="tabular-nums">
                      +{xp}
                    </dd>
                  </div>
                </dl>
                <button
                  type="button"
                  disabled={runInFlight || fly.isPending}
                  onClick={() => fly.mutate({ kind: "tutorial", contractId: contract.id })}
                  className="rounded-md bg-amber-500 px-3 py-1 text-sm font-semibold text-slate-950 disabled:opacity-40"
                >
                  Fly it
                </button>
              </div>
            </li>
          );
        })}
      </ul>
    </div>
  );
}