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488import { filenameParse } from '@ctrl/video-filename-parser'
import { exec } from 'child_process'
import { promises as fs } from 'fs'
import inquirer from 'inquirer'
import path from 'path'
import CacheManager from '../CacheManager'
import {
CliConfig,
MkvDetails,
TrackTypes,
MkvEditorScript,
Track,
} from '../typings'
import { removeExtensionFromFileName } from '../utils'
import { DEFAULT_MKV_DETAILS, TRACK_TYPE_CONFIGS } from './MkvFileEditor.config'
type MkvFileEditorParams = {
filePath: string
config: CliConfig
cache?: CacheManager
}
class MkvFileEditor {
private static FILE_TITLE_REGEXP = /^([^(]+) \(([0-9]{4})\)$/
private filePath: string
private readonly config: CliConfig
private mkvDetails: MkvDetails = DEFAULT_MKV_DETAILS
private batchedActions: (() => Promise<void>)[] = []
private readonly cache: CacheManager
constructor(params: MkvFileEditorParams) {
this.filePath = params.filePath
this.config = params.config
this.cache = params.cache ?? new CacheManager()
}
/**
* Getters
*/
get fileName() {
return path.basename(this.filePath)
}
get fileNameWithoutExtension() {
return removeExtensionFromFileName(this.fileName)
}
get fileDirectory() {
return path.dirname(this.filePath)
}
get subtitleTracks() {
return this.mkvDetails.tracks.filter(
(track) => track.type === TrackTypes.subtitles
)
}
get audioTracks() {
return this.mkvDetails.tracks.filter(
(track) => track.type === TrackTypes.audio
)
}
/**
* Utils
*/
private log(message: string, forced: boolean = false) {
if (this.config.verbose || forced) {
const prefix = this.config.verbose
? ''
: `${this.fileNameWithoutExtension} `
console.log(`${prefix} ${message}`) // eslint-disable-line no-console
}
}
private async fetchFileDetails() {
const response = await this.execQuery(`mkvmerge -J "${this.filePath}"`)
this.mkvDetails = JSON.parse(response)
}
private async execQuery(query: string) {
this.log(`Exec query: ${query}`)
return new Promise<any>((resolve, reject) =>
exec(query, (error, stdout) => {
if (error) {
reject(error)
} else {
resolve(stdout)
}
})
)
}
private async execAction(action: () => Promise<void>) {
if (this.config.batch) {
this.batchedActions.push(action)
} else {
return action()
}
}
/**
* Runners
*/
public async run() {
this.log(`\nProcess ${this.fileName}`)
await this.fetchFileDetails()
await this.cache.fetchConfig()
if (this.config.debug) {
await this.cache.upsertFile(
`${this.fileName}.txt`,
JSON.stringify(this.mkvDetails, null, 2)
)
}
if (this.config.scripts[MkvEditorScript.addMissingLanguages]) {
await this.addMissingLanguages(TrackTypes.audio)
await this.addMissingLanguages(TrackTypes.subtitles)
}
if (this.config.scripts[MkvEditorScript.promptDefaultAudioLanguage]) {
await this.promptDefaultAudioLanguage()
}
if (this.config.scripts[MkvEditorScript.setDefaultSubtitle]) {
await this.setDefaultSubtitle()
}
if (this.config.scripts[MkvEditorScript.removeUselessAudioTracks]) {
await this.removeUselessAudioTracks()
}
if (this.config.scripts[MkvEditorScript.sanitizeTitle]) {
await this.sanitizeTitle()
}
if (this.config.scripts[MkvEditorScript.extractSubtitles]) {
await this.extractSubtitles()
}
}
public async runBatchedActions() {
if (!this.batchedActions.length) {
return
}
this.log(`\nRun batched actions for ${this.fileName}`)
for (let i = 0; i < this.batchedActions.length; i++) {
await this.batchedActions[i]()
}
this.batchedActions = []
}
/**
* Scripts
*/
private async addMissingLanguages(type: TrackTypes) {
const tracks = this.mkvDetails.tracks.filter((track) => track.type === type)
for (let i = 0; i < tracks.length; i++) {
const { properties } = tracks[i]
const amountOfSameType = tracks.length
if (properties.language === 'und') {
const { language } = await inquirer.prompt<{ language: string }>([
{
name: 'language',
message: `New language for ${this.fileName} : ${type} ${
i + 1
} of ${amountOfSameType}`,
},
])
if (language) {
await this.execQuery(
`mkvpropedit "${this.filePath}" --edit track:@${properties.number} --set language=${language}`
)
this.log('Track updated', true)
} else {
this.log('Track ignored', true)
}
}
}
}
private async promptDefaultAudioLanguage() {
const audioTracks = this.audioTracks
const currentDefaultAudioLanguage = audioTracks.find(
(track) => track.properties.default_track
)?.properties?.language
if (audioTracks.length === 1 && !currentDefaultAudioLanguage) {
await this.setDefaultTrack(audioTracks, audioTracks[0])
}
if (
new Set(audioTracks.map((track) => track.properties.language)).size > 1
) {
const { language } = await inquirer.prompt<{ language: string }>([
{
name: 'language',
message: `New language for ${this.fileName} : ${audioTracks
.map((track) => track.properties.language)
.join(', ')}`,
default:
currentDefaultAudioLanguage ?? audioTracks[0].properties.language,
},
])
const newDefaultAudioTrack = audioTracks.find(
(track) => track.properties.language === language
)
if (!newDefaultAudioTrack) {
this.log('The language you gave does not exist', true)
await this.promptDefaultAudioLanguage()
} else {
await this.setDefaultTrack(audioTracks, newDefaultAudioTrack)
}
}
}
private async setDefaultSubtitle() {
const audioLanguage = this.mkvDetails.tracks.find(
(track) =>
track.type === TrackTypes.audio && track.properties.default_track
)?.properties?.language
const subtitleTracks = this.subtitleTracks
const currentDefaultSubtitleLanguage = subtitleTracks.find(
(track) => track.properties.default_track
)?.properties?.language
let defaultSubtitleTrack: Track | null = null
if (audioLanguage && subtitleTracks.length) {
if (audioLanguage === 'fre') {
defaultSubtitleTrack = null
} else if (audioLanguage === 'eng') {
defaultSubtitleTrack =
subtitleTracks.find((track) => track.properties.language === 'eng') ??
null
if (!defaultSubtitleTrack) {
defaultSubtitleTrack =
subtitleTracks.find(
(track) => track.properties.language === 'fr'
) ?? null
}
} else {
defaultSubtitleTrack =
subtitleTracks.find((track) => track.properties.language === 'fr') ??
null
if (!defaultSubtitleTrack) {
defaultSubtitleTrack =
subtitleTracks.find(
(track) => track.properties.language === 'eng'
) ?? null
}
}
}
if (defaultSubtitleTrack) {
if (
currentDefaultSubtitleLanguage !==
defaultSubtitleTrack.properties.language
) {
await this.setDefaultTrack(subtitleTracks, defaultSubtitleTrack)
}
} else if (subtitleTracks.length) {
this.log('No default subtitle found')
}
}
private async removeUselessAudioTracks() {
const defaultAudioLanguage = this.audioTracks.find(
(track) => track.properties.default_track
)?.properties?.language
if (!defaultAudioLanguage) {
return
}
const uselessAudioTracks = this.audioTracks.filter(
(track) =>
track.properties.language !== defaultAudioLanguage &&
track.properties.language !== 'fre'
)
if (uselessAudioTracks.length) {
await this.removeTracks(uselessAudioTracks)
}
}
private async sanitizeTitle() {
const titleMatch = MkvFileEditor.FILE_TITLE_REGEXP.exec(
this.fileNameWithoutExtension
)
if (!titleMatch) {
const fileInfo = filenameParse(this.fileName)
const { title, year } = await inquirer.prompt<{
year: string
title: string
}>([
{
name: 'title',
message: `Title of ${this.fileName}`,
default: fileInfo.title
? removeExtensionFromFileName(fileInfo.title).trim()
: '',
},
{
name: 'year',
message: `Release year of ${this.fileName} :`,
year: fileInfo.year,
},
])
if (!year || !title) {
this.log('Missing informations', true)
await this.sanitizeTitle()
} else {
const newFileName = `${title} (${year}).mkv`
const newFilePath = path.join(this.fileDirectory, newFileName)
await fs.rename(this.filePath, newFilePath)
this.filePath = newFilePath
this.log(`File renamed: ${this.fileName} => ${newFileName}`, true)
}
}
const newTitleMatch = MkvFileEditor.FILE_TITLE_REGEXP.exec(
this.fileNameWithoutExtension
)
if (!newTitleMatch) {
this.log('Something went wrong', true)
} else {
const containerTitle = this.mkvDetails.container.properties.title
const newTitle = newTitleMatch[1]
if (newTitle !== containerTitle) {
await this.execQuery(
`mkvpropedit "${this.filePath}" --edit info --set "title=${newTitle}"`
)
this.log(
`Container title updated: ${containerTitle} => ${newTitle}`,
true
)
}
}
await this.fetchFileDetails()
}
private async extractSubtitles() {
/*
const subtitleTracks = this.subtitleTracks
if (!subtitleTracks.length) {
return
}
const { index } = await inquirer.prompt<{ index: number }>([
{
name: 'index',
message: `Subtitle of ${this.fileName} to extract ${subtitleTracks.map(
(track, trackIndex) => `${trackIndex} (${track.properties.language})`
)})`,
type: 'number',
default: 0,
},
])
const trackToExtract = subtitleTracks[index]
if (trackToExtract) {
const trackPath = path.join(
this.fileDirectory,
`${this.fileNameWithoutExtension}.${trackToExtract.properties.language}.sub`
)
await this.execAction(async () => {
await this.execQuery(
`mkvextract "${this.filePath}" tracks ${trackToExtract.id}:"${trackPath}"`
)
})
} else {
this.log('Invalid track index', true)
await this.extractSubtitles()
}
*/
}
/**
* Mutations
*/
private async setDefaultTrack(tracks: Track[], defaultTrack: Track) {
const tracksCommand = tracks
.map(
(track) =>
`--edit track:@${track.properties.number} --set flag-default=${
track.id === defaultTrack.id
}`
)
.join(' ')
await this.execQuery(`mkvpropedit "${this.filePath}" ${tracksCommand}`)
await this.fetchFileDetails()
this.log(
`New default ${defaultTrack.type} : ${defaultTrack.properties.language}`,
true
)
}
private async removeTracks(tracksToRemove: Track[]) {
if (
tracksToRemove.length === 0 ||
new Set(tracksToRemove.map((track) => track.type)).size > 1
) {
this.log('Invalid track list', true)
return
}
const tracksType = tracksToRemove[0].type
const tracksToKeepIds = this.mkvDetails.tracks
.filter(
(track) =>
track.type === tracksType &&
tracksToRemove.every((trackBis) => trackBis.id !== track.id)
)
.map((track) => track.id)
const noTrackFlag =
TRACK_TYPE_CONFIGS[tracksType].mkvmerge.stripFromFileFlag
const tempFilePath = `${this.filePath}.temp`
const { isConfirmed } = await inquirer.prompt<{ isConfirmed: string }>([
{
name: 'isConfirmed',
message: `Tracks of type ${tracksType} to remove : ${tracksToRemove.map(
(track) => track.properties.language
)}`,
default: 'yes',
},
])
if (['y', 'yes'].includes(`${isConfirmed}`.toLowerCase())) {
await this.execAction(async () => {
await this.execQuery(
`mkvmerge -o "${tempFilePath}" -${noTrackFlag} ${tracksToKeepIds.join(
','
)} "${this.filePath}"`
)
await fs.unlink(this.filePath)
await fs.rename(tempFilePath, this.filePath)
await this.fetchFileDetails()
})
} else {
this.log('Modification ignored')
}
}
}
export default MkvFileEditor