import { getConfig } from "../../config/store.ts";
import { getWebSearchConfigPath } from "../../config/path.ts";

const CONFIG_PATH = getWebSearchConfigPath();
const BROWSER_COOKIE_PRESETS = ["helium", "chrome", "brave", "arc", "chromium", "edge"] as const;
export type BrowserCookiePreset = typeof BROWSER_COOKIE_PRESETS[number];

export interface BrowserCookieSelection {
	browser?: BrowserCookiePreset;
	profile?: string;
}

export function normalizeChromeProfile(value: unknown): string | undefined {
	if (typeof value !== "string") return undefined;
	const normalized = value.trim();
	return normalized || undefined;
}

function parseBrowserCookies(value: unknown): BrowserCookieSelection | undefined {
	if (value === undefined) return undefined;
	if (!value || typeof value !== "object" || Array.isArray(value)) throw new Error(`browserCookies in ${CONFIG_PATH} must be an object`);
	const raw = value as Record<string, unknown>;
	if ("profilePath" in raw) throw new Error(`browserCookies.profilePath is not supported; use a browser preset and profile directory name in ${CONFIG_PATH}`);
	let browser: BrowserCookiePreset | undefined;
	if (raw.browser !== undefined) {
		if (typeof raw.browser !== "string") throw new Error(`browserCookies.browser in ${CONFIG_PATH} must be a supported browser name`);
		const normalized = raw.browser.trim().toLowerCase();
		browser = BROWSER_COOKIE_PRESETS.find(candidate => candidate === normalized);
		if (!browser) throw new Error(`Unsupported browserCookies.browser ${JSON.stringify(raw.browser)} in ${CONFIG_PATH}`);
	}
	if (raw.profile !== undefined && typeof raw.profile !== "string") throw new Error(`browserCookies.profile in ${CONFIG_PATH} must be a profile directory name`);
	const profile = normalizeChromeProfile(raw.profile);
	if (profile && (profile === "." || profile === ".." || profile.includes("/") || profile.includes("\\"))) throw new Error(`browserCookies.profile in ${CONFIG_PATH} must be a profile directory name, not a path`);
	return { ...(browser ? { browser } : {}), ...(profile ? { profile } : {}) };
}

function loadConfig(): { browserCookies?: BrowserCookieSelection; allowBrowserCookies: boolean } {
	const raw = getConfig();
	if (raw.chromeProfile !== undefined) throw new Error(`chromeProfile in ${CONFIG_PATH} is no longer supported; use browserCookies.profile`);
	return { browserCookies: parseBrowserCookies(raw.browserCookies), allowBrowserCookies: raw.allowBrowserCookies === true };
}

export function getBrowserCookieSelectionFromConfig(): BrowserCookieSelection {
	return { ...loadConfig().browserCookies };
}

export function isBrowserCookieAccessAllowed(): boolean {
	if (process.env.PI_ALLOW_BROWSER_COOKIES === "1" || process.env.FEYNMAN_ALLOW_BROWSER_COOKIES === "1") return true;
	return getConfig().allowBrowserCookies === true;
}