import { json } from '@sveltejs/kit';
import { z } from 'zod';
import type { RequestHandler } from './$types';
import { requireAdmin } from '$lib/server/middleware/authorize.js';
import { discoverAll, type DiscoveryConfig } from '$lib/server/services/discoveryService.js';
import { success, error } from '$lib/server/utils/response.js';

const discoverConfigSchema = z.object({
	dockerSocketPath: z.string().regex(/^[\w/.:-]+$/).optional(),
	traefikApiUrl: z.string().url().optional()
});

/**
 * POST /api/admin/discover — Scan Docker and Traefik for services. Admin only.
 *
 * Body: { dockerSocketPath?: string, traefikApiUrl?: string }
 */
export const POST: RequestHandler = async (event) => {
	requireAdmin(event);

	let rawBody: unknown;
	try {
		rawBody = await event.request.json();
	} catch {
		return json(error('Invalid JSON body'), { status: 400 });
	}

	const parsed = discoverConfigSchema.safeParse(rawBody);
	if (!parsed.success) {
		return json(error(`Validation failed: ${parsed.error.issues.map((i) => i.message).join(', ')}`), { status: 400 });
	}

	const config: DiscoveryConfig = {
		dockerSocketPath: parsed.data.dockerSocketPath || undefined,
		traefikApiUrl: parsed.data.traefikApiUrl || undefined
	};

	if (!config.dockerSocketPath && !config.traefikApiUrl) {
		return json(
			error('At least one discovery source must be configured (dockerSocketPath or traefikApiUrl)'),
			{ status: 400 }
		);
	}

	try {
		const result = await discoverAll(config);
		return json(success(result));
	} catch (err) {
		const message = err instanceof Error ? err.message : 'Discovery scan failed';
		return json(error(message), { status: 500 });
	}
};