import { z } from "zod";
import { booleanCoercion, dnsHostnameRegex } from "./shared.js";
import { StatusPageTypes, StatusPageThemes, StatusPageThemeModes } from "@/domain/status-pages/status-page.type.js";
import { normalizeStatusPageDomain } from "@/utils/statusPageDomain.js";
import { cssReferencesExternalResource } from "@/utils/customCss.js";

//****************************************
// Status Page Validations
//****************************************

export const getStatusPageParamValidation = z.object({
	url: z.string().min(1, "URL is required"),
});

export const getStatusPageQueryValidation = z.object({
	type: z.union([z.enum(StatusPageTypes), z.array(z.enum(StatusPageTypes))]).transform((val) => (Array.isArray(val) ? val : [val])),
	timeFrame: z.coerce.number().optional(),
});

export const resolveStatusPageQueryValidation = getStatusPageQueryValidation.extend({
	domain: z.string().optional(),
});

const customDomainValidation = z.preprocess(
	(val) => {
		if (val === undefined || val === null) {
			return undefined;
		}
		return normalizeStatusPageDomain(String(val));
	},
	z.union([z.string().regex(dnsHostnameRegex, "Enter a valid domain name (e.g. status.example.com)"), z.null()]).optional()
);

export const createStatusPageBodyValidation = z
	.object({
		type: z.union([z.enum(StatusPageTypes), z.array(z.enum(StatusPageTypes))]).transform((val) => (Array.isArray(val) ? val : [val])),
		companyName: z.string().min(1, "Company name is required"),
		url: z.string().regex(/^[a-zA-Z0-9_-]+$/, {
			message: "URL can only contain letters, numbers, underscores, and hyphens",
		}),
		customDomain: customDomainValidation,
		timezone: z.string().optional(),
		color: z.string().optional(),
		monitors: z.array(z.string().regex(/^[0-9a-fA-F]{24}$/, "Must be a valid monitor ID")).min(1, "At least one monitor is required"),
		subMonitors: z.array(z.string().regex(/^[0-9a-fA-F]{24}$/)).optional(),
		deleteSubmonitors: z.boolean().optional(),
		isPublished: booleanCoercion,
		showCharts: booleanCoercion.optional(),
		showUptimePercentage: booleanCoercion,
		showAdminLoginLink: booleanCoercion.optional(),
		showInfrastructure: booleanCoercion.optional(),
		customCSS: z
			.string()
			.max(100000, "Custom CSS must be at most 100000 characters")
			.refine((css) => !cssReferencesExternalResource(css), {
				message: "Custom CSS cannot reference external URLs or use @import",
			})
			.optional(),
		removeLogo: z.union([z.literal("true"), z.literal("false")]).optional(),
		theme: z.enum(StatusPageThemes).optional(),
		themeMode: z.enum(StatusPageThemeModes).optional(),
	})
	.strip();

export const imageValidation = z
	.object({
		fieldname: z.string().min(1, "Field name is required"),
		originalname: z.string().min(1, "Original name is required"),
		encoding: z.string().min(1, "Encoding is required"),
		mimetype: z.enum(["image/jpeg", "image/png", "image/jpg"], {
			message: "File must be a valid image (jpeg, jpg, or png)",
		}),
		size: z.number().max(3145728, "File size must be less than 3MB"),
		buffer: z.instanceof(Buffer, { message: "Buffer is required" }),
		destination: z.string().optional(),
		filename: z.string().optional(),
		path: z.string().optional(),
	})
	.refine((data) => data.buffer, {
		message: "Image file is required",
	});