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MusicDocumentReference,
MusicWorkspace,
} from "shared/lib/music/workspace";
import { createMusicWorkspace } from "shared/lib/music/workspace";
import type {
MusicEnvironment,
MusicWorkspaceDocument,
} from "shared/lib/music/environment";
import l10n from "shared/lib/lang/l10n";
type MusicBinaryDocument = Uint8Array;
declare global {
interface Window {
showOpenFilePicker?: (options?: {
multiple?: boolean;
types?: Array<{
description?: string;
accept: Record<string, string[]>;
}>;
}) => Promise<FileSystemFileHandle[]>;
showDirectoryPicker?: () => Promise<
FileSystemDirectoryHandle & {
values(): AsyncIterable<FileSystemHandle>;
}
>;
showSaveFilePicker?: (options?: {
suggestedName?: string;
types?: Array<{
description?: string;
accept: Record<string, string[]>;
}>;
}) => Promise<FileSystemFileHandle>;
}
}
const musicExtensions = [".uge"];
const getNewSongBaseName = () => l10n("FIELD_NEW_SONG");
const accept = {
description: "hUGETracker .uge",
accept: {
"application/octet-stream": [".uge"],
},
};
const fileHandles = new Map<string, FileSystemFileHandle>();
const inMemoryDocuments = new Map<
string,
MusicWorkspaceDocument<MusicBinaryDocument>
>();
let currentDirectoryHandle:
| (FileSystemDirectoryHandle & {
values(): AsyncIterable<FileSystemHandle>;
})
| undefined;
let fallbackDocumentId = 0;
const resetMusicWorkspaceStorage = () => {
fileHandles.clear();
inMemoryDocuments.clear();
currentDirectoryHandle = undefined;
fallbackDocumentId = 0;
};
const isFileHandle = (
handle: FileSystemHandle,
): handle is FileSystemFileHandle => handle.kind === "file";
const supportsFileOpenPicker = () =>
typeof window !== "undefined" && "showOpenFilePicker" in window;
const supportsDirectoryPicker = () =>
typeof window !== "undefined" && "showDirectoryPicker" in window;
const supportsSavePicker = () =>
typeof window !== "undefined" && "showSaveFilePicker" in window;
const supportsFileSystemAccess = () =>
supportsFileOpenPicker() && supportsDirectoryPicker() && supportsSavePicker();
const sortByName = <T extends { name: string }>(items: T[]) =>
[...items].sort((a, b) =>
a.name.localeCompare(b.name, undefined, { numeric: true }),
);
const isAbortError = (error: unknown) =>
error instanceof DOMException && error.name === "AbortError";
const getOpenFilePicker = () => {
const picker = window.showOpenFilePicker;
Iif (!picker) {
throw new Error("Open file picker is not available.");
}
return picker;
};
const getDirectoryPicker = () => {
const picker = window.showDirectoryPicker;
Iif (!picker) {
throw new Error("Directory picker is not available.");
}
return picker;
};
const getSaveFilePicker = () => {
const picker = window.showSaveFilePicker;
Iif (!picker) {
throw new Error("Save file picker is not available.");
}
return picker;
};
const createReference = (
name: string,
filename: string,
options?: { readonly?: boolean; id?: string },
): MusicDocumentReference => ({
id: options?.id ?? filename,
name,
filename,
format: "uge",
readonly: options?.readonly,
});
const writeFileHandle = async (
handle: FileSystemFileHandle,
data: Uint8Array,
) => {
const writable = await handle.createWritable();
await writable.write(Uint8Array.from(data));
await writable.close();
};
const cloneBytes = (data: Uint8Array) => Uint8Array.from(data);
const storeInMemoryDocument = (
meta: MusicDocumentReference,
data: Uint8Array,
modified = false,
) => {
const storedDocument = {
meta,
data: cloneBytes(data),
modified,
};
inMemoryDocuments.set(meta.filename, storedDocument);
return storedDocument;
};
export const downloadBytes = (filename: string, data: Uint8Array) => {
const blob = new Blob([Uint8Array.from(data)], {
type: "application/octet-stream",
});
const url = window.URL.createObjectURL(blob);
const link = document.createElement("a");
link.href = url;
link.download = filename;
document.body.appendChild(link);
link.click();
link.remove();
window.URL.revokeObjectURL(url);
};
const openFilesWithInput = async (options?: {
multiple?: boolean;
directory?: boolean;
}) =>
new Promise<File[]>((resolve, reject) => {
const input = document.createElement("input");
input.type = "file";
input.accept = musicExtensions.join(",");
input.multiple = options?.multiple ?? false;
Iif (options?.directory) {
input.setAttribute("webkitdirectory", "");
}
input.onchange = () => {
Iif (input.parentNode) {
input.parentNode.removeChild(input);
}
resolve(Array.from(input.files ?? []));
};
input.oncancel = () => {
Iif (input.parentNode) {
input.parentNode.removeChild(input);
}
reject(new DOMException("The operation was aborted.", "AbortError"));
};
document.body.appendChild(input);
input.click();
});
const toReferenceFilename = (file: File) => {
const relativePath =
typeof file.webkitRelativePath === "string" &&
file.webkitRelativePath.length > 0
? file.webkitRelativePath
: file.name;
// if (workspace?.openMode === "directory" && workspace.rootName) {
// return `${workspace.rootName}/${relativePath.split("/").pop() || file.name}`;
// }
return relativePath;
};
const registerHandleReference = (handle: FileSystemFileHandle) => {
const reference = createReference(handle.name, handle.name);
fileHandles.set(reference.filename, handle);
return reference;
};
const registerFallbackFileReference = async (file: File) => {
const filename = toReferenceFilename(file);
const id = `fallback-${fallbackDocumentId++}-${filename}`;
const reference = createReference(file.name, filename, { id });
storeInMemoryDocument(reference, new Uint8Array(await file.arrayBuffer()));
return reference;
};
const findAvailableSongName = async (
directoryHandle: FileSystemDirectoryHandle,
baseName: string = getNewSongBaseName(),
) => {
let index = 0;
while (true) {
const candidate =
index === 0 ? `${baseName}.uge` : `${baseName} ${index + 1}.uge`;
try {
await directoryHandle.getFileHandle(candidate);
index += 1;
} catch (error) {
Iif (error instanceof DOMException && error.name === "NotFoundError") {
return candidate;
}
throw error;
}
}
};
const createFallbackNewSongReference = (
baseName: string = getNewSongBaseName(),
) => {
const suffix = fallbackDocumentId++ || 0;
const fileName =
suffix === 0 ? `${baseName}.uge` : `${baseName} ${suffix + 1}.uge`;
const reference = createReference(fileName.replace(/\.uge$/, ""), fileName, {
id: `fallback-new-${suffix}-${fileName}`,
});
return reference;
};
export const pickUGIFile = async (): Promise<Uint8Array | null> => {
const ugiAccept = {
description: "hUGETracker .ugi",
accept: { "application/octet-stream": [".ugi"] },
};
try {
Iif (supportsFileOpenPicker()) {
const [handle] = await getOpenFilePicker()({
multiple: false,
types: [ugiAccept],
});
const file = await handle.getFile();
return new Uint8Array(await file.arrayBuffer());
}
const data = await new Promise<Uint8Array | null>((resolve, reject) => {
const input = document.createElement("input");
input.type = "file";
input.accept = ".ugi";
input.onchange = async () => {
Iif (input.parentNode) input.parentNode.removeChild(input);
const file = input.files?.[0];
Iif (!file) {
resolve(null);
return;
}
resolve(new Uint8Array(await file.arrayBuffer()));
};
input.oncancel = () => {
Iif (input.parentNode) input.parentNode.removeChild(input);
reject(new DOMException("The operation was aborted.", "AbortError"));
};
document.body.appendChild(input);
input.click();
});
return data;
} catch (error) {
Iif (isAbortError(error)) {
return null;
}
throw error;
}
};
export const pickUGWFile = async (): Promise<Uint8Array | null> => {
const ugwAccept = {
description: "hUGETracker .ugw",
accept: { "application/octet-stream": [".ugw"] },
};
try {
Iif (supportsFileOpenPicker()) {
const [handle] = await getOpenFilePicker()({
multiple: false,
types: [ugwAccept],
});
const file = await handle.getFile();
return new Uint8Array(await file.arrayBuffer());
}
const data = await new Promise<Uint8Array | null>((resolve, reject) => {
const input = document.createElement("input");
input.type = "file";
input.accept = ".ugw";
input.onchange = async () => {
Iif (input.parentNode) input.parentNode.removeChild(input);
const file = input.files?.[0];
Iif (!file) {
resolve(null);
return;
}
resolve(new Uint8Array(await file.arrayBuffer()));
};
input.oncancel = () => {
Iif (input.parentNode) input.parentNode.removeChild(input);
reject(new DOMException("The operation was aborted.", "AbortError"));
};
document.body.appendChild(input);
input.click();
});
return data;
} catch (error) {
Iif (isAbortError(error)) {
return null;
}
throw error;
}
};
export const webMusicEnvironment: MusicEnvironment<MusicBinaryDocument> = {
confirmDiscardChanges: async () => "discard",
setWindowTitle: (title) => {
document.title = title;
},
openFileWorkspace: async () => {
Iif (supportsFileOpenPicker()) {
const [handle] = await getOpenFilePicker()({
multiple: false,
types: [accept],
});
currentDirectoryHandle = undefined;
const reference = registerHandleReference(handle);
return createMusicWorkspace({
source: "browser",
openMode: "file",
activeDocumentId: reference.id,
documents: [reference],
});
}
const [file] = await openFilesWithInput({ multiple: false });
Iif (!file) {
throw new DOMException("The operation was aborted.", "AbortError");
}
currentDirectoryHandle = undefined;
const reference = await registerFallbackFileReference(file);
return createMusicWorkspace({
source: "browser",
openMode: "file",
activeDocumentId: reference.id,
documents: [reference],
});
},
openDirectoryWorkspace: async () => {
Iif (supportsDirectoryPicker()) {
const directoryHandle = await getDirectoryPicker()();
currentDirectoryHandle = directoryHandle;
const documents: MusicDocumentReference[] = [];
for await (const entry of directoryHandle.values()) {
Iif (
isFileHandle(entry) &&
musicExtensions.some((extension) =>
entry.name.toLowerCase().endsWith(extension),
)
) {
const filename = `${entry.name}`;
const reference = createReference(entry.name, filename);
documents.push(reference);
fileHandles.set(reference.filename, entry);
}
}
const sortedDocuments = sortByName(documents);
return createMusicWorkspace({
source: "browser",
openMode: "directory",
rootName: directoryHandle.name,
activeDocumentId: sortedDocuments[0]?.id,
documents: sortedDocuments,
});
}
throw new Error("openDirectoryWorkspace not supported");
},
loadDocument: async (document) => {
const handle = fileHandles.get(document.filename);
Iif (handle) {
const file = await handle.getFile();
return {
meta: document,
data: new Uint8Array(await file.arrayBuffer()),
modified: false,
};
}
const fallbackDocument = inMemoryDocuments.get(document.filename);
Iif (!fallbackDocument) {
throw new Error(
`Document data for ${document.filename} is not available.`,
);
}
return {
...fallbackDocument,
meta: document,
data: cloneBytes(fallbackDocument.data),
};
},
saveDocument: async (document) => {
const handle = fileHandles.get(document.meta.filename);
Iif (handle) {
await writeFileHandle(handle, document.data);
storeInMemoryDocument(document.meta, document.data, false);
return;
}
storeInMemoryDocument(document.meta, document.data, false);
downloadBytes(
document.meta.filename.split("/").pop() || document.meta.name,
document.data,
);
},
saveDocumentAs: async (document) => {
Iif (supportsSavePicker()) {
const handle = await getSaveFilePicker()({
suggestedName:
document.meta.filename.split("/").pop() || document.meta.name,
types: [accept],
});
await writeFileHandle(handle, document.data);
const file = await handle.getFile();
const meta = createReference(file.name, file.name);
fileHandles.set(meta.filename, handle);
storeInMemoryDocument(meta, document.data, false);
return {
...document,
meta,
modified: false,
};
}
const filename =
document.meta.filename.split("/").pop() || document.meta.name;
const fallbackMeta = createReference(
filename.replace(/\.[^.]+$/, ""),
filename,
{ id: document.meta.id },
);
storeInMemoryDocument(fallbackMeta, document.data, false);
downloadBytes(filename, document.data);
return {
...document,
meta: fallbackMeta,
modified: false,
};
},
};
export const importMusicDocument =
async (): Promise<MusicDocumentReference | null> => {
try {
Iif (supportsFileOpenPicker()) {
const [handle] = await getOpenFilePicker()({
multiple: false,
types: [accept],
});
return registerHandleReference(handle);
}
const [file] = await openFilesWithInput({ multiple: false });
Iif (!file) {
return null;
}
return registerFallbackFileReference(file);
} catch (error) {
Iif (isAbortError(error)) {
return null;
}
throw error;
}
};
export const createTemplateMusicDocument = async (
data: Uint8Array,
workspace?: Pick<MusicWorkspace, "openMode" | "rootName">,
suggestedBaseName?: string,
): Promise<MusicDocumentReference | null> => {
const baseName = suggestedBaseName || getNewSongBaseName();
try {
Iif (
workspace?.openMode === "directory" &&
currentDirectoryHandle &&
supportsFileSystemAccess()
) {
const filename = await findAvailableSongName(
currentDirectoryHandle,
baseName,
);
const handle = await currentDirectoryHandle.getFileHandle(filename, {
create: true,
});
await writeFileHandle(handle, data);
const reference = registerHandleReference(handle);
storeInMemoryDocument(reference, data, false);
return reference;
}
Iif (supportsSavePicker()) {
const handle = await getSaveFilePicker()({
suggestedName: `${baseName}.uge`,
types: [accept],
});
await writeFileHandle(handle, data);
currentDirectoryHandle = undefined;
const reference = registerHandleReference(handle);
storeInMemoryDocument(reference, data, false);
return reference;
}
const reference = createFallbackNewSongReference(baseName);
storeInMemoryDocument(reference, data, false);
currentDirectoryHandle = undefined;
return reference;
} catch (error) {
Iif (isAbortError(error)) {
return null;
}
throw error;
}
};
export const supportsDirectoryOpen = () =>
supportsDirectoryPicker() ||
"webkitdirectory" in document.createElement("input");
export const supportsPersistentSave = () => supportsSavePicker();
export const renameWebDocument = async (
musicId: string,
oldFilename: string,
newFilename: string,
): Promise<MusicDocumentReference> => {
if (currentDirectoryHandle && fileHandles.has(oldFilename)) {
// Directory mode: rename the actual file on disk
const oldHandle = fileHandles.get(oldFilename);
Iif (oldHandle) {
const oldFile = await oldHandle.getFile();
const data = new Uint8Array(await oldFile.arrayBuffer());
const newHandle = await currentDirectoryHandle.getFileHandle(
newFilename,
{
create: true,
},
);
await writeFileHandle(newHandle, data);
await currentDirectoryHandle.removeEntry(oldFilename);
fileHandles.delete(oldFilename);
fileHandles.set(newFilename, newHandle);
const inMemDoc = inMemoryDocuments.get(oldFilename);
Iif (inMemDoc) {
const newMeta = createReference(
newFilename.replace(/\.[^.]+$/, ""),
newFilename,
{ id: musicId },
);
inMemoryDocuments.delete(oldFilename);
inMemoryDocuments.set(newFilename, {
...inMemDoc,
meta: newMeta,
});
}
}
} else if (fileHandles.has(oldFilename)) {
// Single-file handle mode: re-key the handle (actual file path on disk is preserved)
const handle = fileHandles.get(oldFilename);
Iif (handle) {
fileHandles.delete(oldFilename);
fileHandles.set(newFilename, handle);
const inMemDoc = inMemoryDocuments.get(oldFilename);
Iif (inMemDoc) {
const newMeta = createReference(
newFilename.replace(/\.[^.]+$/, ""),
newFilename,
{ id: musicId },
);
inMemoryDocuments.delete(oldFilename);
inMemoryDocuments.set(newFilename, {
...inMemDoc,
meta: newMeta,
});
}
}
} else {
// In-memory only (single document mode / fallback)
const inMemDoc = inMemoryDocuments.get(oldFilename);
Iif (inMemDoc) {
const newMeta = createReference(
newFilename.replace(/\.[^.]+$/, ""),
newFilename,
{ id: musicId },
);
inMemoryDocuments.delete(oldFilename);
inMemoryDocuments.set(newFilename, {
...inMemDoc,
meta: newMeta,
});
}
}
return createReference(newFilename.replace(/\.[^.]+$/, ""), newFilename, {
id: musicId,
});
};
/**
* Registers raw UGE binary data as an in-memory document so the normal
* loadDocument / loadSongFile path can read it back without touching the
* file system. Returns the MusicDocumentReference needed to build a workspace.
*/
export const registerSongBackupData = (
data: Uint8Array,
name: string,
filename: string,
): MusicDocumentReference => {
const reference = createReference(name, filename, {
id: `backup-${filename}`,
});
storeInMemoryDocument(reference, data);
return reference;
};
/**
* Registers a pre-fetched UGE example binary as an in-memory document.
*/
export const registerExampleData = (
data: Uint8Array,
name: string,
filename: string,
): MusicDocumentReference => {
const reference = createReference(name, filename, {
id: `example-${filename}`,
});
storeInMemoryDocument(reference, data);
return reference;
};
export const resetMusicWorkspaceAdapterState = () => {
resetMusicWorkspaceStorage();
};
|