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Cleaning up server code

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Doing some literal cleaning
This commit is contained in:
jmt-gh 2022-06-12 01:38:09 -07:00
parent f31700f668
commit 8754f0c25f
2 changed files with 136 additions and 127 deletions
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154
server/utils/parsers/parseOverdriveMediaMarkers.js
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@ -1,53 +1,16 @@
const Logger = require('../../Logger')
// given an array of audioFiles, return an array of unparsed MediaMarkers
module.exports.getOverdriveMediaMarkersFromFiles = (audioFiles) => {
var markers = audioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(notUndefined => notUndefined !== undefined).filter(elem => { return elem !== null }) || []
// given a list of audio files, extract all of the Overdrive Media Markers metaTags, and return an array of them as XML
function overdriveMediaMarkers(includedAudioFiles) {
var markers = includedAudioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(notUndefined => notUndefined !== undefined).filter(elem => { return elem !== null }) || []
return markers
}
module.exports.parseOverdriveMediaMarkers = (overdriveMediaMarkers, includedAudioFiles) => {
// given the array of Overdrive Media Markers from generateOverdriveMediaMarkers()
// parse and clean them in to something a bit more usable
function cleanOverdriveMediaMarkers(overdriveMediaMarkers) {
var parseString = require('xml2js').parseString; // function to convert xml to JSON
var parsedOverdriveMediaMarkers = [] // an array of objects. each object being a chapter with a name and time key. the values are arrays of strings
overdriveMediaMarkers.forEach(function (item, index) {
var parsed_result
parseString(item, function (err, result) {
// result.Markers.Marker is the result of parsing the XML for the MediaMarker tags for the MP3 file (Part##.mp3)
// it is shaped like this:
// [
// {
// "Name": [
// "Chapter 1: "
// ],
// "Time": [
// "0:00.000"
// ]
// },
// {
// "Name": [
// "Chapter 2: "
// ],
// "Time": [
// "15:51.000"
// ]
// }
// ]
parsed_result = result.Markers.Marker
// The values for Name and Time in parsed_results are returned as Arrays from parseString
// update them to be strings
parsed_result.forEach((item, index) => {
Object.keys(item).forEach(key => {
item[key] = item[key].toString()
})
})
})
parsedOverdriveMediaMarkers.push(parsed_result)
})
var parsedOverdriveMediaMarkers = []
// go from an array of arrays of objects to an array of objects
// end result looks like:
@ -62,40 +25,89 @@ module.exports.parseOverdriveMediaMarkers = (overdriveMediaMarkers, includedAudi
// },
// { redacted }
// ]
parsedOverdriveMediaMarkers = parsedOverdriveMediaMarkers
overdriveMediaMarkers.forEach(function (item, index) {
var parsed_result
parseString(item, function (err, result) {
// result.Markers.Marker is the result of parsing the XML for the MediaMarker tags for the MP3 file (Part##.mp3)
// it is shaped like this:
// [
// {
// "Name": [
// "Chapter 1: "
// ],
// "Time": [
// "0:00.000"
// ]
// },
// {
// "Name": [
// "Chapter 2: "
// ],
// "Time": [
// "15:51.000"
// ]
// }
// ]
var index = 0
var time = 0.0
parsed_result = result.Markers.Marker
// The values for Name and Time in parsed_results are returned as Arrays from parseString
// update them to be strings
parsed_result.forEach((item, index) => {
Object.keys(item).forEach(key => {
item[key] = item[key].toString()
})
})
})
parsedOverdriveMediaMarkers.push(parsed_result)
})
return parsedOverdriveMediaMarkers
}
// The function that actually generates the Chapters object that we update ABS with
function generateParsedChapters(includedAudioFiles, cleanedOverdriveMediaMarkers) {
// actually generate the chapter object
// logic ported over from benonymity's OverdriveChapterizer:
// https://github.com/benonymity/OverdriveChapterizer/blob/main/chapters.py
var length = 0.0
var newOChapters = []
var index = 0
var time = 0.0
var newChapters = []
const weirdChapterFilterRegex = /([(]\d|[cC]ontinued)/
includedAudioFiles.forEach((track, track_index) => {
parsedOverdriveMediaMarkers[track_index].forEach((chapter) => {
Logger.debug(`[parseOverdriveMediaMarkers] Attempting regex check for ${chapter.Name}!`)
if (weirdChapterFilterRegex.test(chapter.Name)) {
Logger.debug(`[parseOverdriveMediaMarkers] That shit weird yo`)
return
}
time = chapter.Time.split(":")
time = length + parseFloat(time[0]) * 60 + parseFloat(time[1])
newOChapters.push(
{
id: index++,
start: time,
end: length,
title: chapter.Name
}
)
})
length += track.duration
cleanedOverdriveMediaMarkers[track_index].forEach((chapter) => {
Logger.debug(`[parseOverdriveMediaMarkers] Attempting regex check for ${chapter.Name}...`)
if (weirdChapterFilterRegex.test(chapter.Name)) {
Logger.debug(`[parseOverdriveMediaMarkers] Regex matched. Skipping ${chapter.Name}!`)
return
}
time = chapter.Time.split(":")
time = length + parseFloat(time[0]) * 60 + parseFloat(time[1])
newChapters.push(
{
id: index++,
start: time,
end: length,
title: chapter.Name
}
)
})
length += track.duration
})
Logger.debug(`[parseOverdriveMediaMarkers] newOChapters: ${JSON.stringify(newOChapters)}`)
return newOChapters
}
return newChapters
}
module.exports.overdriveMediaMarkersExist = (includedAudioFiles) => {
return overdriveMediaMarkers(includedAudioFiles).length > 1
}
module.exports.parseOverdriveMediaMarkersAsChapters = (includedAudioFiles) => {
Logger.info('[parseOverdriveMediaMarkers] Parsing of Overdrive Media Markers started')
var cleanedOverdriveMediaMarkers = cleanOverdriveMediaMarkers(overdriveMediaMarkers(includedAudioFiles))
var parsedChapters = generateParsedChapters(includedAudioFiles, cleanedOverdriveMediaMarkers)
return parsedChapters
}