Zazama / node-id3

import { WriteCallback } from "../types/write"

import { create }  from "./create"

import { removeTagsFromBuffer } from "./remove"

import { isFunction, isString, validateString } from "../util"

import { writeId3TagToFileAsync, writeId3TagToFileSync } from "../file-write"

/**

 * Replaces any existing tags with the given tags in the given buffer.

 * Throws in case of error.

 * @public

 */

export function write(tags: WriteTags, buffer: Buffer): Buffer

/**

 * Replaces synchronously any existing tags with the given tags in the

 * specified file.

 * Throws in case of error.

 * @public

 */

export function write(tags: WriteTags, filepath: string): void

/**

 * Replaces asynchronously any existing tags with the given tags in the

 * specified file.

 * @public

 */

export function write(

    tags: WriteTags, filepath: string, callback: WriteCallback

): void

export function write(

    tags: WriteTags,

    filebuffer: string | Buffer,

    callback?: WriteCallback

): Buffer | void {

    const id3Tag = create(tags)

    if (isFunction(callback)) {

        writeId3TagToFileAsync(validateString(filebuffer), id3Tag)

        .then(() => callback(null), (error) => callback(error))

        return

    }

    if (isString(filebuffer)) {

        return writeId3TagToFileSync(filebuffer, id3Tag)

    }

    return writeInBuffer(id3Tag, filebuffer)

}

function writeInBuffer(tags: Buffer, buffer: Buffer) {

    buffer = removeTagsFromBuffer(buffer) || buffer

    return Buffer.concat([tags, buffer])

}