117 lines
4.3 KiB
JavaScript
117 lines
4.3 KiB
JavaScript
(function () {
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'use strict';
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angular.module('OpenSlidesApp.poll.majority', [])
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.value('MajorityMethodChoices', [
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{'value': 'simple_majority', 'display_name': 'Simple majority'},
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{'value': 'two-thirds_majority', 'display_name': 'Two-thirds majority'},
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{'value': 'three-quarters_majority', 'display_name': 'Three-quarters majority'},
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{'value': 'disabled', 'display_name': 'Disabled'},
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])
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.factory('MajorityMethods', [
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function () {
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return {
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'simple_majority': function (vote, base) {
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return Math.ceil(-(base / 2 - vote)) - 1;
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},
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'two-thirds_majority': function (vote, base) {
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var result = -(base * 2 - vote * 3) / 3;
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if (result % 1 !== 0) {
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result = Math.ceil(result) - 1;
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}
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return result;
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},
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'three-quarters_majority': function (vote, base) {
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var result = -(base * 3 - vote * 4) / 4;
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if (result % 1 !== 0) {
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result = Math.ceil(result) - 1;
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}
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return result;
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},
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'disabled': function () {
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return undefined;
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},
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};
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}
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])
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.factory('MajorityCalculation', [
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'MajorityMethods',
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function (MajorityMethods) {
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return {
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//calculate the base for yes-based multi-option polls
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options_yes_sum: function(poll){
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var yes = 0;
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var error = false;
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if (poll.options) {
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_.forEach(poll.options, function(option) {
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_.forEach(option.votes, function(vote) {
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if (vote.value == 'Yes' || vote.value == 'Votes'){
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if (vote.weight >= 0){
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yes = yes + vote.weight;
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} else {
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error = true;
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}
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}
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});
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});
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if (!error) {
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return yes;
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}
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} else if (poll.yes && poll.yes >= 0) {
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return poll.yes;
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} // else: undefined
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},
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// returns 0 or positive integer if quorum is reached or surpassed
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// sum (optional): a different base to calculate with
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isReached: function (base, method, votes, sum) {
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var methodFunction = MajorityMethods[method];
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var yes = parseInt(votes.yes);
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var no = parseInt(votes.no);
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var alt_base = parseInt(sum);
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var abstain = parseInt(votes.abstain);
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var valid = parseInt(votes.votesvalid);
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var cast = parseInt(votes.votescast);
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var result;
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var isValid = function (vote) {
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return !isNaN(vote) && vote >= 0;
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};
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if (isValid(alt_base) && isValid(yes)) {
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result = methodFunction(yes, alt_base);
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} else {
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switch (base) {
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case 'YES_NO_ABSTAIN':
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if (isValid(yes) && isValid(no) && isValid(abstain)) {
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result = methodFunction(yes, yes + no + abstain);
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}
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break;
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case 'YES_NO':
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if (isValid(yes) && isValid(no)) {
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result = methodFunction(yes, yes + no);
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}
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break;
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case 'VALID':
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if (isValid(yes) && isValid(valid)) {
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result = methodFunction(yes, valid);
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}
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break;
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case 'CAST':
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if (isValid(yes) && isValid(cast)) {
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result = methodFunction(yes, cast);
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}
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break;
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// case 'DISABLED': result remains undefined
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}
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}
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return result;
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}
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};
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}
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]);
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}());
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