// Imports the Google Cloud client library
const vision = require('@google-cloud/vision');

// Creates a client
const client = new vision.ImageAnnotatorClient({
    projectId: '...',
    keyFilename: 'key.json',
});
var x;
var y;
var highestX = 0;
var highestY = 0;
var whitespace;
var newline;
var word;
var words = [];
var wordCoordinates = [];
var indexedWords = [];
// Performs label detection on the image file
client
    .textDetection('words.jpg')
    .then(results => {
    const detections = results[0].textAnnotations;
    detections.splice(0, 1);
    //console.log(detections);
    detections.forEach(function(text) {
        if(text.locale == '') {
            x = text.boundingPoly.vertices[0].x;
            y = text.boundingPoly.vertices[0].y;
            if(x > highestX){
                highestX = x;
            }
            if(y > highestY){
                highestY = y;
            }
            //console.log(text.description + ':' + text.boundingPoly.vertices[0].x);
        }
    });
    detections.forEach(function(text) {
        whitespace = highestX/10; //Whitespace can take 10% of total amount of X
        newline = highestY/10; //Newline must be larger than 10% of Y
        x = text.boundingPoly.vertices[0].x;
        y = text.boundingPoly.vertices[0].y;
        word = text.description;
        wordCoordinates[word] = [x, y];
        if(~indexedWords.indexOf(word) == false) {
            words.push(word);
        }
        indexedWords.push(word);
        detections.forEach(function(text) {
            xNew = text.boundingPoly.vertices[0].x;
            yNew = text.boundingPoly.vertices[0].y;
            newWord = text.description;
            if (Math.abs(x - xNew) < whitespace && Math.abs(y - yNew) < newline) {
                if(x !== xNew || y !== yNew) {
                    if(~words.indexOf(newWord) == false) {
                        if(~indexedWords.indexOf(newWord) == false) {
                            console.log('words belong to each other ' + word + ' and ' + newWord);
                            words.remove(word);
                            words.remove(newWord);
                            words.push(word + ' ' + newWord);
                            indexedWords.push(newWord);
                        }
                    }
                }
            }
            if(Math.abs(y - yNew) < newline){
                if(x !== xNew || y !== yNew) {
                    //console.log('words on the same line ' + word + ' and ' + newWord);
                }
            }
        });
    });
    test();
})
.catch(err => {
    console.error('ERROR:', err);
});

Array.prototype.remove = function() {
    var what, a = arguments, L = a.length, ax;
    while (L && this.length) {
        what = a[--L];
        while ((ax = this.indexOf(what)) !== -1) {
            this.splice(ax, 1);
        }
    }
    return this;
};

function test() {
    //Add words together
    for(i = 1; i < words.length; i++){
        var n = words[i-1].split(" ");
        var lastPart = n[1];
        var t = words[i].split(" ");
        var firstPart = t[0];
        if(lastPart == firstPart){
            var word1 = words[i-1];
            var word2 = words[i];
            words.remove(word1);
            words.remove(word2);

            var newWord = n[0] + " " + lastPart + " " + t[1];
            console.log(newWord);
            words.push(newWord);
        }
    }
    console.log(words);
}