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file.ts
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file.ts
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import type { App } from "../main";
import UUIDGenerator from "shortid";
import fs, { ReadStream } from "fs";
import { basename } from "path";
import { getType } from "mime";
import { Readable } from "stream";
import locreq_curry from "locreq";
const locreq = locreq_curry(__dirname);
export type FileDBEntry = {
filename: string;
id: string;
};
export default class File {
filename?: string;
mime_type?: string;
id?: string;
private app: App;
data?: Readable;
constructor(app: App) {
this.app = app;
}
getDataPath(): string | null {
if (!this.id) {
return null;
}
const upload_path = this.app.ConfigManager.get("upload_path");
const data_path = locreq.resolve(`${upload_path}/${this.id}`);
return data_path;
}
getMimeType(): string {
if (!this.filename) {
throw new Error("Set filename first");
}
return getType(this.filename) || "unknown";
}
getStream() {
const path = this.getDataPath();
if (!path) {
return null;
}
return fs.createReadStream(path);
}
getURL() {
if (this.id === undefined) {
throw new Error("id not set!");
}
if (this.filename === undefined) {
throw new Error("filename not set!");
}
return `/api/v1/uploaded-files/${this.id}/${this.filename}`;
}
static async fromID(app: App, id: string) {
const matches = await app.Datastore.find("files", { id });
const file_data = matches[0] as FileDBEntry;
const ret = new FileFromDB(app);
ret.filename = file_data.filename;
ret.id = id;
return ret;
}
static async fromPath(
app: App,
path: string,
filename: string = basename(path)
) {
const ret = new FileFromPath(app);
ret.filename = filename;
ret.data = fs.createReadStream(path);
return ret;
}
static async fromData(
app: App,
buffer: Buffer | string,
filename: string
): Promise<File> {
const stream = new Readable();
stream._read = () => {
null;
};
stream.push(buffer);
stream.push(null);
const ret = new File(app);
ret.filename = filename;
ret.data = stream;
return ret;
}
toDBEntry(): FileDBEntry {
if (!this.filename) {
throw new Error("Missing filename");
}
if (!this.id) {
throw new Error("Missing id");
}
return {
filename: this.filename,
id: this.id,
};
}
async save() {
if (this.id) {
throw new Error(
"This file has already been saved and cannot be edited"
);
}
if (!this.data) {
throw new Error("Please provide file data before saving");
}
if (!this.filename) {
throw new Error("Please provide file data before saving");
}
this.id = UUIDGenerator();
const upload_path = this.app.ConfigManager.get("upload_path");
const upload_path_with_sealious_name = `${upload_path}/${this.id}`;
const writeStream = fs.createWriteStream(
upload_path_with_sealious_name
);
this.data.pipe(writeStream);
await new Promise((resolve, reject) => {
this.data?.on("end", resolve);
this.data?.on("close", resolve);
this.data?.on("error", reject);
});
await this.app.Datastore.insert("files", this.toDBEntry(), {});
return this;
}
}
export class FileFromDB extends File {
filename: string;
getDataPath(): string {
return super.getDataPath() as string;
}
}
export class FileFromPath extends File {
filename: string;
data: ReadStream;
}

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Expires
Thu, Jan 23, 19:19 (1 d, 1 h)
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Storage Handle
601494
Default Alt Text
file.ts (3 KB)

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