"use server";

import { revalidatePath } from "next/cache";
import {
	contentMutationService,
	createContentMutationInvocation,
} from "@/features/housekeeping/domains/content/services/mutations";
import { createCorrelationId } from "@/features/housekeeping/foundation/contracts";
import { requirePermission } from "@/lib/admin/guard";
import { PERMS } from "@/lib/permissions";

const MAX_SIZE = 5 * 1024 * 1024;
const ALLOWED = ["image/png", "image/jpeg", "image/gif", "image/webp"];

function mediaFile(formData: FormData): File | null {
	const value = formData.get("file");
	return value && typeof value === "object" ? (value as File) : null;
}

function validateMediaFile(file: File | null): string | null {
	if (!file || file.size === 0) return "No file provided";
	if (file.size > MAX_SIZE) return "File too large (max 5MB)";
	if (!ALLOWED.includes(file.type))
		return "Invalid file type. Allowed: PNG, JPEG, GIF, WebP";
	return null;
}

export async function uploadMedia(
	formData: FormData,
): Promise<{ ok: boolean; error?: string }> {
	const staff = await requirePermission(PERMS.PAGES_EDIT);
	const file = mediaFile(formData);
	const error = validateMediaFile(file);
	if (error) return { ok: false, error };
	const result = await contentMutationService.execute(
		createContentMutationInvocation(staff, createCorrelationId()),
		"media.upload",
		{ file },
	);
	if (!result.ok) throw new Error("Media upload failed");
	revalidatePath("/api/media");
	revalidatePath("/ase/content/media/library");
	return { ok: true };
}

export async function deleteMedia(name: string): Promise<void> {
	const staff = await requirePermission(PERMS.PAGES_EDIT);
	await contentMutationService.execute(
		createContentMutationInvocation(staff, createCorrelationId()),
		"media.delete",
		{ filename: name },
	);
	revalidatePath("/api/media");
	revalidatePath("/ase/content/media/library");
}

export async function uploadMediaAndReturn(
	formData: FormData,
): Promise<string> {
	const staff = await requirePermission(PERMS.PAGES_EDIT);
	const file = mediaFile(formData);
	if (validateMediaFile(file)) return "";
	const result = await contentMutationService.execute(
		createContentMutationInvocation(staff, createCorrelationId()),
		"media.upload",
		{ file },
	);
	if (!result.ok) return "";
	revalidatePath("/api/media");
	revalidatePath("/ase/content/media/library");
	return typeof result.data.output?.url === "string"
		? result.data.output.url
		: "";
}