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path: root/apps/web/src/stores/preview-store.ts
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import { create } from "zustand";
import { persist } from "zustand/middleware";
import { isGuideId, type GuideId } from "@/lib/guides";
import { DEFAULT_GRID_CONFIG } from "@/constants/guide-constants";
import type { GridConfig } from "@/lib/guides/types";

interface PreviewOverlaysState {
	bookmarks: boolean;
}

interface PersistedPreviewState {
	activeGuide?: string | null;
	layoutGuide?: {
		platform?: string | null;
	};
	overlays?: PreviewOverlaysState;
	gridConfig?: GridConfig;
}

interface PreviewState {
	activeGuide: GuideId | null;
	overlays: PreviewOverlaysState;
	gridConfig: GridConfig;
	toggleGuide: (guideId: GuideId) => void;
	setGridConfig: (config: Partial<GridConfig>) => void;
	setOverlayVisibility: ({
		overlay,
		isVisible,
	}: {
		overlay: keyof PreviewOverlaysState;
		isVisible: boolean;
	}) => void;
	toggleOverlayVisibility: ({
		overlay,
	}: {
		overlay: keyof PreviewOverlaysState;
	}) => void;
}

const DEFAULT_PREVIEW_OVERLAYS: PreviewOverlaysState = {
	bookmarks: true,
};

function getPersistedActiveGuide(
	state: PersistedPreviewState | undefined,
): GuideId | null {
	const persistedGuide =
		state?.activeGuide ?? state?.layoutGuide?.platform ?? null;

	if (typeof persistedGuide !== "string") {
		return null;
	}

	return isGuideId(persistedGuide) ? persistedGuide : null;
}

export const usePreviewStore = create<PreviewState>()(
	persist(
		(set) => ({
			activeGuide: null,
			overlays: DEFAULT_PREVIEW_OVERLAYS,
			gridConfig: DEFAULT_GRID_CONFIG,
			toggleGuide: (guideId) => {
				set((state) => ({
					activeGuide: state.activeGuide === guideId ? null : guideId,
				}));
			},
			setGridConfig: (config) => {
				set((state) => ({
					gridConfig: { ...state.gridConfig, ...config },
				}));
			},
			setOverlayVisibility: ({ overlay, isVisible }) => {
				set((state) => ({
					overlays: {
						...state.overlays,
						[overlay]: isVisible,
					},
				}));
			},
			toggleOverlayVisibility: ({ overlay }) => {
				set((state) => ({
					overlays: {
						...state.overlays,
						[overlay]: !state.overlays[overlay],
					},
				}));
			},
		}),
		{
			name: "preview-settings",
			version: 4,
			migrate: (persistedState) => {
				const state = persistedState as PersistedPreviewState | undefined;

				return {
					activeGuide: getPersistedActiveGuide(state),
					overlays: state?.overlays ?? DEFAULT_PREVIEW_OVERLAYS,
					gridConfig: {
						rows: state?.gridConfig?.rows ?? DEFAULT_GRID_CONFIG.rows,
						cols: state?.gridConfig?.cols ?? DEFAULT_GRID_CONFIG.cols,
					},
				};
			},
			partialize: (state) => ({
				activeGuide: state.activeGuide,
				overlays: state.overlays,
				gridConfig: state.gridConfig,
			}),
		},
	),
);