@pierre/diffs/dist/react/utils/useFileInstance.js

import { areOptionsEqual } from "../../utils/areOptionsEqual.js";
import { areFileTargetsEqual } from "../../utils/areFileTargetsEqual.js";
import { getLineAnnotationName } from "../../utils/getLineAnnotationName.js";
import { File } from "../../components/File.js";
import { VirtualizedFile } from "../../components/VirtualizedFile.js";
import { useStableCallback } from "./useStableCallback.js";
import { useCreateEditor } from "../EditContext.js";
import { noopRender } from "../constants.js";
import { WorkerPoolContext } from "../WorkerPoolContext.js";
import { useVirtualizer } from "../Virtualizer.js";
import { useCallback, useContext, useEffect, useLayoutEffect, useRef } from "react";
//#region src/react/utils/useFileInstance.ts
const useIsomorphicLayoutEffect = typeof window === "undefined" ? useEffect : useLayoutEffect;
function useFileInstance({ file, options, editorOptions, editStateKey, lineAnnotations, selectedLines, prerenderedHTML, metrics, hasGutterRenderUtility, hasCustomHeader, disableWorkerPool, edit, onEditChange: _onEditChange, onEditComplete: _onEditComplete }) {
	const simpleVirtualizer = useVirtualizer();
	const controlledSelection = selectedLines !== void 0;
	const poolManager = useContext(WorkerPoolContext);
	const createEditor = useCreateEditor();
	const handleOnEditChange = useStableCallback((event) => _onEditChange?.(event));
	const onEditChange = _onEditChange != null ? handleOnEditChange : void 0;
	const acceptedCache = useRef(null);
	const handleOnEditComplete = useStableCallback((event) => {
		const decision = _onEditComplete?.(event) ?? "reject";
		if (decision === "accept") acceptedCache.current = {
			file: {
				installed: event.file,
				stale: event.originalFile
			},
			annotations: {
				installed: event.lineAnnotations,
				stale: event.originalLineAnnotations
			}
		};
		return decision;
	});
	const onEditComplete = _onEditComplete != null ? handleOnEditComplete : void 0;
	const instanceRef = useRef(null);
	const disposeEditorRef = useRef(null);
	const getEditor = useStableCallback(() => {
		if (createEditor == null) throw new Error("File: EditContext is not attached");
		return createEditor("file", editorOptions ?? {}, editStateKey);
	});
	const ref = useStableCallback((node) => {
		if (node != null) {
			if (instanceRef.current != null) throw new Error("File: An instance should not already exist when a node is created");
			if (simpleVirtualizer != null) instanceRef.current = new VirtualizedFile(mergeFileOptions({
				controlledSelection,
				hasCustomHeader,
				hasGutterRenderUtility,
				onEditChange,
				onEditComplete,
				options
			}), simpleVirtualizer, metrics, !disableWorkerPool ? poolManager : void 0, true);
			else instanceRef.current = new File(mergeFileOptions({
				controlledSelection,
				hasCustomHeader,
				hasGutterRenderUtility,
				onEditChange,
				onEditComplete,
				options
			}), !disableWorkerPool ? poolManager : void 0, true);
			if (edit && disposeEditorRef.current == null) disposeEditorRef.current = applyEdit(instanceRef.current, getEditor);
			instanceRef.current.hydrate({
				file,
				fileContainer: node,
				lineAnnotations,
				prerenderedHTML
			});
		} else {
			if (instanceRef.current == null) throw new Error("File: A File instance should exist when unmounting");
			instanceRef.current.cleanUp();
			instanceRef.current = null;
			disposeEditorRef.current = null;
		}
	});
	useIsomorphicLayoutEffect(() => {
		const { current: instance } = instanceRef;
		if (instance == null) return;
		const newOptions = mergeFileOptions({
			controlledSelection,
			hasCustomHeader,
			hasGutterRenderUtility,
			onEditChange,
			onEditComplete,
			options
		});
		const forceRender = newOptions !== void 0 && !areOptionsEqual(instance.options, newOptions);
		instance.setOptions(newOptions);
		if (!edit && disposeEditorRef.current != null) {
			const { current: disposeEditor } = disposeEditorRef;
			disposeEditorRef.current = null;
			disposeEditor();
		}
		const resolved = resolveAcceptedValues(file, lineAnnotations, acceptedCache);
		instance.render({
			file: resolved.file,
			lineAnnotations: resolved.lineAnnotations,
			forceRender
		});
		if (selectedLines !== void 0) instance.setSelectedLines(selectedLines);
		if (edit && disposeEditorRef.current == null) disposeEditorRef.current = applyEdit(instance, getEditor);
	});
	return {
		ref,
		getHoveredLine: useCallback(() => {
			return instanceRef.current?.getHoveredLine();
		}, []),
		getAnnotationSlotName: useCallback((annotation) => instanceRef.current?.getAnnotationSlotName(annotation) ?? getLineAnnotationName(annotation), [])
	};
}
function resolveAcceptedValues(file, lineAnnotations, acceptedCache) {
	const { current: accepted } = acceptedCache;
	if (accepted == null) return {
		file,
		lineAnnotations
	};
	const { file: acceptedFiles, annotations: acceptedAnnotations } = accepted;
	let resolvedFile = file;
	if (acceptedFiles != null) if (areFileTargetsEqual(file, acceptedFiles.stale)) resolvedFile = acceptedFiles.installed;
	else accepted.file = null;
	let resolvedAnnotations = lineAnnotations;
	if (acceptedAnnotations != null) if (lineAnnotations === acceptedAnnotations.stale) resolvedAnnotations = acceptedAnnotations.installed;
	else accepted.annotations = null;
	if (accepted.file == null && accepted.annotations == null) acceptedCache.current = null;
	return {
		file: resolvedFile,
		lineAnnotations: resolvedAnnotations
	};
}
function mergeFileOptions({ options, controlledSelection, hasCustomHeader, hasGutterRenderUtility, onEditChange, onEditComplete }) {
	if (!(controlledSelection || hasGutterRenderUtility || hasCustomHeader || onEditChange != null || onEditComplete != null)) return options;
	return {
		...options,
		controlledSelection,
		renderCustomHeader: hasCustomHeader ? noopRender : options?.renderCustomHeader,
		renderGutterUtility: hasGutterRenderUtility ? noopRender : options?.renderGutterUtility,
		onEditChange,
		onEditComplete
	};
}
function applyEdit(instance, getEditor) {
	const editor = getEditor();
	try {
		return editor.edit(instance);
	} catch (error) {
		editor.cleanUp();
		throw error;
	}
}
//#endregion
export { useFileInstance };

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