/**
 *
 */
var SelectionSort = function() {
    //===== Inits.
    this.actions = [];

    this.swaps = 0;
    this.comparisons = 0;

    //===== Action management.
};

SelectionSort.prototype = Object.create(Sorter.prototype);

/**
 *
 */
SelectionSort.prototype.init = function() {
    var len = this.shuffled.length;

    this
        .instruct(Itemgroup.items, 0, 0, len)
        .instruct(Itemgroup.items, 1, 0, len)
        .instruct(Itemgroup.items, 2, 0, len)

    for (var i = 0; i < len; i++) {
        this.instruct(Itemgroup.text, 1, 0, i, this.shuffled[i]);
    }

    this
        .instruct(Itemgroup.foreground, 1, 0, 0, len, Visualizer.fg0)
        .instruct(Itemgroup.background, 1, 0, 0, len, Visualizer.bg0)

        .instruct(Itemgroup.opacity, 0, 0, 0, len, 0)
        .instruct(Itemgroup.opacity, 2, 0, 0, len, 0)
};

/**
 *
 */
SelectionSort.prototype.sort = function(arr) {
    console.error('selection sort is broken.');

    var len = arr.length;
    var i;
    var j;
    var tmp;
    var swaps = 0;
    var comparisons = 0;
    var min;

    for (i = 0; i < len; i++) {
        min = i;
        for (j = i + 1; j < len; j++) {
            comparisons++;
            if (arr[j] < arr[i]) {
                min = j;
            }
        }

        if (min !== i) {
            swaps++;
            tmp = arr[i];
            arr[i] = arr[min];
            arr[min] = tmp;
        }
    }

    // console.info(`swaps: ${swaps}, comparisons: ${comparisons} `);

    return arr;
};