genSRT.js

const fs = require('fs');
const path = require('path');


// Creating line to [chapter,verseNo] mappings
// Array containing number of verses in each chapters
var chaplength = [7, 286, 200, 176, 120, 165, 206, 75, 129, 109, 123, 111, 43, 52, 99, 128, 111, 110, 98, 135, 112, 78, 118, 64, 77, 227, 93, 88, 69, 60, 34, 30, 73, 54, 45, 83, 182, 88, 75, 85, 54, 53, 89, 59, 37, 35, 38, 29, 18, 45, 60, 49, 62, 55, 78, 96, 29, 22, 24, 13, 14, 11, 11, 18, 12, 12, 30, 52, 52, 44, 28, 28, 20, 56, 40, 31, 50, 40, 46, 42, 29, 19, 36, 25, 22, 17, 19, 26, 30, 20, 15, 21, 11, 8, 8, 19, 5, 8, 8, 11, 11, 8, 3, 9, 5, 4, 7, 3, 6, 3, 5, 4, 5, 6]
// contains chapter verse mappings for each line
var mappings = []
// Number of verses in quran
const VERSE_LENGTH = 6236

for (i = 1; i <= 114; i++) {
  for (j = 1; j <= chaplength[i - 1]; j++) {
    mappings.push([i, j])
  }
}


// 6236 files
// assuming path: D:\Files\Quran\English Recitation only\quran ibrahim walk parts recitation
// test files: C:\Users\Nawaz\Documents\GitHub\quran-api\database\linebyline

// create chap by chap srt file for each edition


let linebylineTextPath = 'C:\\Users\\Nawaz\\Documents\\GitHub\\quran-api\\database\\linebyline'

var srtTimings = fs.readFileSync('SRTchapbychaptimings.txt').toString().split(/\r?\n/)


for (let file of fs.readdirSync(linebylineTextPath)){


   let tranArr =  fs.readFileSync(path.join(linebylineTextPath,file)).toString().split(/\r?\n/).slice(0,6236)


fs.mkdirSync(path.join(__dirname, 'subtitles',file.replace(/\.[^\.]*$/gi,"")), {
  recursive: true
});

let vttHeader = ["WEBVTT",""]

let verticalTopPosition = " line:0%"

let textArr = []
let vttArr =[]
let counter = 0
for (i = 1; i <= 114; i++) {
    textArr = []
    vttArr=[]
    for (j = 1; j <= chaplength[i - 1]; j++) {
       textArr.push(j)
       vttArr.push(j)
       textArr.push(srtTimings[counter])
       vttArr.push(srtTimings[counter].replace(/,/gi,".")+verticalTopPosition)
       if(file.startsWith('jpn')||file.startsWith('zho'))
       textArr.push(tranArr[counter].replace(/。/gi,'。 ').replace(/，/gi,'， '))
       else
       textArr.push(tranArr[counter])
       vttArr.push(tranArr[counter])
       textArr.push("")
       vttArr.push("")
      counter++
    }

    fs.writeFileSync(path.join(__dirname, 'subtitles',file.replace(/\.[^\.]*$/gi,""),i+'.srt'), textArr.join('\n'))
    fs.writeFileSync(path.join(__dirname, 'subtitles',file.replace(/\.[^\.]*$/gi,""),i+'.vtt'), vttHeader.concat(vttArr).join('\n'))
  }


}