import { db } from '@/lib/db';
import { settings } from '@/lib/db/schema';
import { eq } from 'drizzle-orm';

export interface AppConfig {
	clubName: string;
	sportName: string;
	appTitle: string;
	appDescription: string;
}

const defaultConfig: AppConfig = {
	clubName: 'TT Club',
	sportName: 'Table Tennis',
	appTitle: 'Table Tennis Booking System',
	appDescription: 'Book your table tennis court slots with ease',
};

let cachedConfig: AppConfig | null = null;
let cacheTime: number = 0;
const CACHE_DURATION = 5 * 60 * 1000; // 5 minutes

/**
 * Get app configuration with caching
 * This function fetches the club/brand settings from the database
 */
export async function getAppConfig(): Promise<AppConfig> {
	const now = Date.now();

	// Return cached config if still valid
	if (cachedConfig && now - cacheTime < CACHE_DURATION) {
		return cachedConfig;
	}

	try {
		// Fetch all brand/club settings
		const configSettings = await db
			.select()
			.from(settings)
			.where(eq(settings.key, 'club_name'))
			.union(db.select().from(settings).where(eq(settings.key, 'sport_name')))
			.union(db.select().from(settings).where(eq(settings.key, 'app_title')))
			.union(db.select().from(settings).where(eq(settings.key, 'app_description')));

		// Build config object
		const config: AppConfig = { ...defaultConfig };

		configSettings.forEach((setting) => {
			switch (setting.key) {
				case 'club_name':
					config.clubName = setting.value;
					break;
				case 'sport_name':
					config.sportName = setting.value;
					break;
				case 'app_title':
					config.appTitle = setting.value;
					break;
				case 'app_description':
					config.appDescription = setting.value;
					break;
			}
		});

		// Cache the result
		cachedConfig = config;
		cacheTime = now;

		return config;
	} catch (error) {
		console.error('Error fetching app config:', error);
		// Return default config on error
		return defaultConfig;
	}
}

/**
 * Invalidate the cache (call when settings are updated)
 */
export function invalidateAppConfigCache() {
	cachedConfig = null;
	cacheTime = 0;
}

/**
 * Get app config for client components (no database access)
 * This should be used with server-side rendered props
 */
export function getDefaultAppConfig(): AppConfig {
	return { ...defaultConfig };
}