import type { HudPage } from "./canvas-hud";

import type { DataStatus } from "./live-state";

export type FastHudPage = HudPage | "weather" | "ai" | "conversate";

export type FastHudPageDirection = "next" | "previous";

export type FastHudLayout = {

readonly order: readonly FastHudPage[];

readonly enabled: readonly FastHudPage[];

};

const KEYLESS_FAST_HUD_PAGES = [

"overview",

"news",

"todo",

"weather",

"ai",

"conversate",

] as const satisfies readonly FastHudPage[];

const ROUTED_FAST_HUD_PAGES = [

...KEYLESS_FAST_HUD_PAGES,

"navigation",

] as const satisfies readonly FastHudPage[];

export function getFastHudPages(

routeStatus: DataStatus,

layout?: FastHudLayout,

): readonly FastHudPage[] {

if (layout) {

const available = new Set<FastHudPage>(

routeStatus === "disabled"

? KEYLESS_FAST_HUD_PAGES

: ROUTED_FAST_HUD_PAGES,

);

const enabled = new Set(layout.enabled);

const pages = layout.order.filter((page, index) => (

available.has(page)

&& enabled.has(page)

&& layout.order.indexOf(page) === index

));

if (!pages.includes("overview")) pages.unshift("overview");

return pages;

}

return routeStatus === "disabled"

? KEYLESS_FAST_HUD_PAGES

: ROUTED_FAST_HUD_PAGES;

}

export function normalizeFastHudPage(

page: FastHudPage,

routeStatus: DataStatus,

layout?: FastHudLayout,

): FastHudPage {

const pages = getFastHudPages(routeStatus, layout);

if (pages.includes(page)) return page;

return layout ? pages[0] ?? "overview" : "weather";

}

export function getAdjacentFastHudPage(

page: FastHudPage,

direction: FastHudPageDirection,

routeStatus: DataStatus,

layout?: FastHudLayout,

): FastHudPage {

const pages = getFastHudPages(routeStatus, layout);

const current = normalizeFastHudPage(page, routeStatus, layout);

const index = pages.indexOf(current);

const offset = direction === "next" ? 1 : -1;

return pages[(index + offset + pages.length) % pages.length];

}