"use server";

import { revalidatePath } from "next/cache";
import { redirect } from "next/navigation";
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";

function formValues(formData: FormData): Record<string, string> {
	return Object.fromEntries(
		Array.from(formData.entries(), ([key, value]) => [
			key,
			typeof value === "string" ? value : value.name,
		]),
	);
}

async function executeTheme(
	operation:
		| "theme.update"
		| "theme.apply-preset"
		| "theme.custom-change"
		| "theme.apply-custom",
	input: Record<string, unknown>,
) {
	const staff = await requirePermission(PERMS.SETTINGS_EDIT);
	return contentMutationService.execute(
		createContentMutationInvocation(staff, createCorrelationId()),
		operation,
		input,
	);
}

export async function saveTheme(formData: FormData): Promise<void> {
	const result = await executeTheme("theme.update", {
		values: formValues(formData),
	});
	if (result.ok) revalidatePath("/", "layout");
	redirect("/admin/theme?saved=1");
}

export async function applyPreset(formData: FormData): Promise<void> {
	const name = String(formData.get("preset") ?? "").normalize("NFC");
	const result = await executeTheme("theme.apply-preset", { preset: name });
	if (result.ok) revalidatePath("/", "layout");
	redirect(
		result.ok
			? `/admin/theme?preset=${encodeURIComponent(name)}`
			: "/admin/theme",
	);
}

export async function saveCustomTheme(formData: FormData): Promise<void> {
	const name = String(formData.get("name") ?? "")
		.normalize("NFC")
		.trim();
	if (!name) redirect("/admin/theme");
	const result = await executeTheme("theme.custom-change", {
		action: "create",
		name,
	});
	if (result.ok) revalidatePath("/admin/theme");
	redirect("/admin/theme?savedTheme=1");
}

export async function applyCustomTheme(formData: FormData): Promise<void> {
	const id = String(formData.get("id") ?? "")
		.normalize("NFC")
		.trim();
	if (!id) redirect("/admin/theme");
	const result = await executeTheme("theme.apply-custom", { id });
	if (result.ok) revalidatePath("/", "layout");
	const name =
		result.ok && typeof result.data.output?.name === "string"
			? result.data.output.name
			: "";
	redirect(
		result.ok
			? `/admin/theme?theme=${encodeURIComponent(name)}`
			: "/admin/theme",
	);
}

export async function renameCustomTheme(formData: FormData): Promise<void> {
	const id = String(formData.get("id") ?? "")
		.normalize("NFC")
		.trim();
	const name = String(formData.get("name") ?? "")
		.normalize("NFC")
		.trim();
	if (!id || !name) redirect("/admin/theme");
	const result = await executeTheme("theme.custom-change", {
		action: "rename",
		id,
		name,
	});
	if (result.ok) revalidatePath("/admin/theme");
	redirect("/admin/theme?renamed=1");
}

export async function deleteCustomTheme(formData: FormData): Promise<void> {
	const id = String(formData.get("id") ?? "")
		.normalize("NFC")
		.trim();
	if (!id) redirect("/admin/theme");
	const result = await executeTheme("theme.custom-change", {
		action: "delete",
		id,
	});
	if (result.ok) revalidatePath("/admin/theme");
	redirect("/admin/theme?deletedTheme=1");
}