'use strict';

var parsers = require('../parsers');

module.exports.definition = {

set: function (v) {
    var valueType = parsers.valueType(v);
    if (valueType === parsers.TYPES.ANGLE) {
        return this._setProperty('azimuth', parsers.parseAngle(v));
    }
    if (valueType === parsers.TYPES.KEYWORD) {
        var keywords = v.toLowerCase().trim().split(/\s+/);
        var hasBehind = false;
        if (keywords.length > 2) {
            return;
        }
        var behindIndex = keywords.indexOf('behind');
        hasBehind = (behindIndex !== -1);

        if (keywords.length === 2) {
            if (!hasBehind) {
                return;
            }
            keywords.splice(behindIndex, 1);
        }
        if (keywords[0] === 'leftwards' || keywords[0] === 'rightwards') {
            if (hasBehind) {
                return;
            }
            return this._setProperty('azimuth', keywords[0]);
        }
        if (keywords[0] === 'behind') {
            return this._setProperty('azimuth', '180deg');
        }
        var deg;
        switch (keywords[0]) {
        case 'left-side':
            return this._setProperty('azimuth', '270deg');
        case 'far-left':
            return this._setProperty('azimuth', (hasBehind ? 240 : 300) + 'deg');
        case 'left':
            return this._setProperty('azimuth', (hasBehind ? 220 : 320) + 'deg');
        case 'center-left':
            return this._setProperty('azimuth', (hasBehind ? 200 : 340) + 'deg');
        case 'center':
            return this._setProperty('azimuth', (hasBehind ? 180 : 0) + 'deg');
        case 'center-right':
            return this._setProperty('azimuth', (hasBehind ? 160 : 20) + 'deg');
        case 'right':
            return this._setProperty('azimuth', (hasBehind ? 140 : 40) + 'deg');
        case 'far-right':
            return this._setProperty('azimuth', (hasBehind ? 120 : 60) + 'deg');
        case 'right-side':
            return this._setProperty('azimuth', '90deg');
        default:
            return;
        }
    }
},
get: function () {
    return this.getPropertyValue('azimuth');
},
enumerable: true,
configurable: true

};