// ==UserScript==
// @name         Simplify
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description
// @include      https://www.waze.com/editor*
// @include      https://www.waze.com/*/editor*
// @include      https://beta.waze.com/*
// @exclude      https://www.waze.com/user/editor*
// @grant        none
// @require      https://greasyfork.org/scripts/24851-wazewrap/code/WazeWrap.js
// ==/UserScript==

(function() {

    var UpdateSegmentGeometry;
    var upperLimit = 100;

    function bootstrap(tries = 1) {
        if (W &&
            W.map &&
            W.model &&
            WazeWrap.Ready &&
            $) {
            init();
        } else if (tries < 1000) {
            setTimeout(function () {bootstrap(tries++);}, 200);
        }
    }

    bootstrap();

    function init(){
        UpdateSegmentGeometry = require('Waze/Action/UpdateSegmentGeometry');
        new WazeWrap.Interface.Shortcut('simplifyGeom', 'Simplifies the geometry of onscreen segments', 'editing', 'Editing', 'S+1', SimplifyGeometry, null).add();
    }

    function SimplifyGeometry(){
        var i = 0;
        _.each(WazeWrap.Model.getOnscreenSegments(),function(v,k){
            if(i < upperLimit && !WazeWrap.Model.isRoundaboutSegmentID(v.attributes.id) && v.geometry.components.length > 2 && NeedsSimplified(v) && v.isGeometryEditable()){ //stay under the 100 change cap, don't touch RA segments & is editable (lock level & no closure)
                W.model.actionManager.add(new UpdateSegmentGeometry(v, v.geometry, v.geometry.simplify(0.6)));
                i++;
            }
        });
    }

    function NeedsSimplified(seg){
        var attr = seg.attributes;

    var dmax = 2.5;
        var ax = Math.abs(seg.geometry.components[0].x - seg.geometry.components[1].x);
        var ay = Math.abs(seg.geometry.components[0].y - seg.geometry.components[1].y);
        var da = Math.sqrt(ax * ax + ay * ay);
        var bx = Math.abs(seg.geometry.components[seg.geometry.components.length - 2].x - seg.geometry.components[seg.geometry.components.length - 1].x);
        var by = Math.abs(seg.geometry.components[seg.geometry.components.length - 2].y - seg.geometry.components[seg.geometry.components.length - 1].y);
        var db = Math.sqrt(bx * bx + by * by);
        var a1 = null;
        var b1 = null;
        if (da < dmax)
            a1 = seg.geometry.components[1].clone();
        if (db < dmax)
            b1 = seg.geometry.components[seg.geometry.components.length - 2].clone();
        if (a1 != null && b1 != null && a1.x == b1.x && a1.y == b1.y)
            b1 = null;
        var geo = seg.geometry.simplify(0.6);
        if (seg.geometry.components.length != geo.components.length) {
            if (a1 != null) {
                if (a1.x != geo.components[1].x || a1.y != geo.components[1].y)
                    geo.addPoint(a1, 1);
            }
            if (b1 != null) {
                if (b1.x != geo.components[geo.components.length - 2].x || b1.y != geo.components[geo.components.length - 2].y)
                    geo.addPoint(b1, geo.components.length - 1);
            }
        }
        var reduced = seg.geometry.components.length - geo.components.length;
        if (reduced)
            return true;
        else
            return false;
    }
})();