import type { PlayerState, RouteRequest } from "@deadhead/schema";
import { useMutation, useQueryClient } from "@tanstack/react-query";
import { useState } from "react";
import { useApi } from "../api/context";
import { serverNow, syncClock } from "../clock/clock";
import { locationName } from "../format";
import { errorMessage, useLoadedPlayer } from "../state/actions";
import { PLAYER_STATE_KEY } from "../state/player";
import { Button } from "../ui";

const MINUTE = 60_000;
const selectClass =
  "min-w-0 flex-1 rounded-lg border border-glass-line bg-space-900 px-2 py-1.5 text-sm text-ink-100";

/**
 * Settings → Developer (non-production builds only, CR-011): fast-forward the
 * server clock, add credits, land every flight now, and adjust pilots, ships
 * and discoveries for testing.
 */
export function DevTools() {
  const api = useApi();
  const queryClient = useQueryClient();
  const state = useLoadedPlayer();
  const refresh = async () => {
    await syncClock(api);
    await queryClient.invalidateQueries({ queryKey: PLAYER_STATE_KEY });
    await queryClient.invalidateQueries({ queryKey: ["board"] });
  };
  /** The pilot, ship and discovery tools answer with the new state. */
  const applyState = async (next: PlayerState) => {
    queryClient.setQueryData(PLAYER_STATE_KEY, next);
    await queryClient.invalidateQueries({ queryKey: ["board"] });
  };
  const advance = useMutation({
    mutationFn: (advanceMs: number) => api.call("devAdvanceClock", { advanceMs }),
    onSuccess: refresh,
  });
  const credits = useMutation({
    mutationFn: () => api.call("devAddCredits", { amount: 10_000 }),
    onSuccess: refresh,
  });
  const pilotTool = useMutation({
    mutationFn: (input: RouteRequest<"devPilot">) => api.call("devPilot", input),
    onSuccess: applyState,
  });
  const shipTool = useMutation({
    mutationFn: (input: RouteRequest<"devShip">) => api.call("devShip", input),
    onSuccess: applyState,
  });
  const discoverAll = useMutation({
    mutationFn: () => api.call("devDiscoverAll", {}),
    onSuccess: applyState,
  });

  const [pilotId, setPilotId] = useState(state.pilots[0]?.id ?? "");
  const [shipId, setShipId] = useState(state.ships[0]?.id ?? "");
  const discovered = state.locations.filter((l) => l.discovered).map((l) => l.id);
  const [destination, setDestination] = useState(discovered[0] ?? "earth");
  const pilot = state.pilots.find((p) => p.id === pilotId);
  const ship = state.ships.find((s) => s.id === shipId);

  const lastArrival = Math.max(0, ...state.activeDispatches.map((d) => d.arrivalAt));
  const busy =
    advance.isPending ||
    credits.isPending ||
    pilotTool.isPending ||
    shipTool.isPending ||
    discoverAll.isPending;
  const error =
    advance.error ?? credits.error ?? pilotTool.error ?? shipTool.error ?? discoverAll.error;

  return (
    <div className="space-y-4">
      <div className="flex flex-wrap gap-2">
        <Button
          variant="secondary"
          size="sm"
          disabled={busy}
          onClick={() => advance.mutate(10 * MINUTE)}
        >
          Advance 10 minutes
        </Button>
        <Button
          variant="secondary"
          size="sm"
          disabled={busy}
          onClick={() => advance.mutate(60 * MINUTE)}
        >
          Advance 1 hour
        </Button>
        <Button variant="secondary" size="sm" disabled={busy} onClick={() => credits.mutate()}>
          Add 10,000 credits
        </Button>
        <Button
          variant="secondary"
          size="sm"
          disabled={busy || lastArrival <= serverNow()}
          onClick={() =>
            advance.mutate(Math.max(1000, Math.ceil(lastArrival - serverNow()) + 1000))
          }
        >
          Finish all flights
        </Button>
        <Button
          variant="secondary"
          size="sm"
          disabled={busy || discovered.length === state.locations.length}
          onClick={() => discoverAll.mutate()}
        >
          Discover everywhere
        </Button>
      </div>

      {state.pilots.length > 0 && (
        <fieldset className="space-y-2">
          <legend className="text-xs text-ink-400">Pilot</legend>
          <select
            aria-label="Pilot"
            value={pilotId}
            onChange={(e) => setPilotId(e.target.value)}
            className={selectClass}
          >
            {state.pilots.map((p) => (
              <option key={p.id} value={p.id}>
                {p.name} · level {p.level} · {p.xp} XP
              </option>
            ))}
          </select>
          <div className="flex flex-wrap gap-2">
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !pilot}
              onClick={() => pilotTool.mutate({ pilotId, action: "level-up" })}
            >
              Level up
            </Button>
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !pilot || (pilot.dutyHours === 0 && !pilot.resting)}
              onClick={() => pilotTool.mutate({ pilotId, action: "clear-rest" })}
            >
              Clear duty and rest
            </Button>
          </div>
        </fieldset>
      )}

      {state.ships.length > 0 && (
        <fieldset className="space-y-2">
          <legend className="text-xs text-ink-400">Ship</legend>
          <select
            aria-label="Ship"
            value={shipId}
            onChange={(e) => setShipId(e.target.value)}
            className={selectClass}
          >
            {state.ships.map((s) => (
              <option key={s.id} value={s.id}>
                {s.name} · {s.modelId} · {s.locationId ? locationName(s.locationId) : "in flight"}
              </option>
            ))}
          </select>
          <div className="flex flex-wrap gap-2">
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !ship}
              onClick={() => shipTool.mutate({ shipId, action: "max-upgrades" })}
            >
              Max upgrades
            </Button>
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !ship || Object.keys(ship.upgrades).length === 0}
              onClick={() => shipTool.mutate({ shipId, action: "reset-upgrades" })}
            >
              Reset upgrades
            </Button>
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !ship || ship.inShopUntil === null}
              onClick={() => shipTool.mutate({ shipId, action: "finish-shop" })}
            >
              Finish shop work
            </Button>
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !ship}
              onClick={() => shipTool.mutate({ shipId, action: "damage-hull" })}
            >
              Damage hull
            </Button>
          </div>
          <div className="flex gap-2">
            <select
              aria-label="Move to"
              value={destination}
              onChange={(e) => setDestination(e.target.value)}
              className={selectClass}
            >
              {discovered.map((id) => (
                <option key={id} value={id}>
                  {locationName(id)}
                </option>
              ))}
            </select>
            <Button
              variant="secondary"
              size="sm"
              disabled={busy || !ship || ship.status !== "idle" || ship.locationId === destination}
              onClick={() => shipTool.mutate({ shipId, action: "move", locationId: destination })}
            >
              Move here
            </Button>
          </div>
        </fieldset>
      )}

      {error && (
        <p role="alert" className="text-sm text-rose-300">
          {errorMessage(error)}
        </p>
      )}
    </div>
  );
}