import { ComponentType, Fragment } from 'react'

/**
 * Options for configuring tldraw. For defaults, see {@link defaultTldrawOptions}.
 *
 * @example
 * ```tsx
 * const options: Partial<TldrawOptions> = {
 *     maxPages: 3,
 *     maxShapesPerPage: 1000,
 * }
 *
 * function MyTldrawComponent() {
 *     return <Tldraw options={options} />
 * }
 * ```
 *
 * @public
 */
export interface TldrawOptions {
	readonly maxShapesPerPage: number
	readonly maxFilesAtOnce: number
	readonly maxPages: number
	readonly animationMediumMs: number
	readonly followChaseViewportSnap: number
	readonly doubleClickDurationMs: number
	readonly multiClickDurationMs: number
	readonly coarseDragDistanceSquared: number
	readonly dragDistanceSquared: number
	readonly defaultSvgPadding: number
	readonly cameraSlideFriction: number
	readonly gridSteps: readonly {
		readonly min: number
		readonly mid: number
		readonly step: number
	}[]
	readonly collaboratorInactiveTimeoutMs: number
	readonly collaboratorIdleTimeoutMs: number
	readonly collaboratorCheckIntervalMs: number
	readonly cameraMovingTimeoutMs: number
	readonly hitTestMargin: number
	readonly edgeScrollDelay: number
	readonly edgeScrollEaseDuration: number
	readonly edgeScrollSpeed: number
	readonly edgeScrollDistance: number
	readonly coarsePointerWidth: number
	readonly coarseHandleRadius: number
	readonly handleRadius: number
	readonly longPressDurationMs: number
	readonly textShadowLod: number
	readonly adjacentShapeMargin: number
	readonly flattenImageBoundsExpand: number
	readonly flattenImageBoundsPadding: number
	readonly laserDelayMs: number
	readonly maxExportDelayMs: number
	/**
	 * How long should previews created by {@link Editor.createTemporaryAssetPreview} last before
	 * they expire? Defaults to 3 minutes.
	 */
	readonly temporaryAssetPreviewLifetimeMs: number
	readonly actionShortcutsLocation: 'menu' | 'toolbar' | 'swap'
	readonly createTextOnCanvasDoubleClick: boolean
	/**
	 * The react provider to use when exporting an image. This is useful if your shapes depend on
	 * external context providers. By default, this is `React.Fragment`.
	 */
	readonly exportProvider: ComponentType<{ children: React.ReactNode }>
	/**
	 * By default, the toolbar items are accessible via number shortcuts according to their order. To disable this, set this option to false.
	 */
	readonly enableToolbarKeyboardShortcuts: boolean
	/**
	 * The maximum number of fonts that will be loaded while blocking the main rendering of the
	 * canvas. If there are more than this number of fonts needed, we'll just show the canvas right
	 * away and let the fonts load in in the background.
	 */
	readonly maxFontsToLoadBeforeRender: number
	/**
	 * If you have a CSP policy that blocks inline styles, you can use this prop to provide a
	 * nonce to use in the editor's styles.
	 */
	readonly nonce: string | undefined
}

/** @public */
export const defaultTldrawOptions = {
	maxShapesPerPage: 4000,
	maxFilesAtOnce: 100,
	maxPages: 40,
	animationMediumMs: 320,
	followChaseViewportSnap: 2,
	doubleClickDurationMs: 450,
	multiClickDurationMs: 200,
	coarseDragDistanceSquared: 36, // 6 squared
	dragDistanceSquared: 16, // 4 squared
	defaultSvgPadding: 32,
	cameraSlideFriction: 0.09,
	gridSteps: [
		{ min: -1, mid: 0.15, step: 64 },
		{ min: 0.05, mid: 0.375, step: 16 },
		{ min: 0.15, mid: 1, step: 4 },
		{ min: 0.7, mid: 2.5, step: 1 },
	],
	collaboratorInactiveTimeoutMs: 60000,
	collaboratorIdleTimeoutMs: 3000,
	collaboratorCheckIntervalMs: 1200,
	cameraMovingTimeoutMs: 64,
	hitTestMargin: 8,
	edgeScrollDelay: 200,
	edgeScrollEaseDuration: 200,
	edgeScrollSpeed: 25,
	edgeScrollDistance: 8,
	coarsePointerWidth: 12,
	coarseHandleRadius: 20,
	handleRadius: 12,
	longPressDurationMs: 500,
	textShadowLod: 0.35,
	adjacentShapeMargin: 10,
	flattenImageBoundsExpand: 64,
	flattenImageBoundsPadding: 16,
	laserDelayMs: 1200,
	maxExportDelayMs: 5000,
	temporaryAssetPreviewLifetimeMs: 180000,
	actionShortcutsLocation: 'swap',
	createTextOnCanvasDoubleClick: true,
	exportProvider: Fragment,
	enableToolbarKeyboardShortcuts: true,
	maxFontsToLoadBeforeRender: Infinity,
	nonce: undefined,
} as const satisfies TldrawOptions