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import {chat_v1 as chatV1} from '@googleapis/chat'; |
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import {PollState, Voter, Votes} from './interfaces'; |
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/** |
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* Creates a small progress bar to show percent of votes for an option. Since |
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* width is limited, the percentage is scaled to 20 steps (5% increments). |
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* |
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* @param {number} choice - The choice index |
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* @param {object} voter - The voter |
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* @param {PollState} state - PollState |
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* @returns {Votes} Map of cast votes keyed by choice index |
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*/ |
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export function saveVotes(choice: number, voter: Voter, state: PollState) { |
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const votes: Votes = state.votes!; |
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const isAnonymous = state.anon || false; |
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const maxVotes = state.voteLimit === 0 ? state.choices.length : state.voteLimit || 1; |
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if (maxVotes === 1) { |
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Object.keys(votes).forEach(function(choiceIndex) { |
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if (votes[choiceIndex]) { |
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const existed = votes[choiceIndex].findIndex((x) => x.uid === voter.uid); |
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if (existed > -1) { |
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votes[choiceIndex].splice(existed, 1); |
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} |
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} |
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}); |
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} else { |
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// get current voter total vote |
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let voteCount = 0; |
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let voted = false; |
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Object.keys(votes).forEach(function(choiceIndex) { |
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if (votes[choiceIndex]) { |
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const existed = votes[choiceIndex].findIndex((x) => x.uid === voter.uid); |
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if (existed > -1) { |
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voteCount += 1; |
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} |
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if (existed > -1 && parseInt(choiceIndex) === choice) { |
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voted = true; |
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} |
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} |
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}); |
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if (voteCount >= maxVotes || voted) { |
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let deleted = false; |
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Object.keys(votes).forEach(function(choiceIndex) { |
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if (votes[choiceIndex]) { |
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const existed = votes[choiceIndex].findIndex((x) => x.uid === voter.uid); |
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if (((voteCount >= maxVotes && existed > -1 && !voted) || |
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(voted && parseInt(choiceIndex) === choice)) && !deleted) { |
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votes[choiceIndex].splice(existed, 1); |
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deleted = true; |
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} |
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} |
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}); |
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} |
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if (voted) { |
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return votes; |
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} |
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} |
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if (isAnonymous) { |
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delete voter.name; |
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} |
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if (votes[choice]) { |
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votes[choice].push(voter); |
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} else { |
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votes[choice] = [voter]; |
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} |
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return votes; |
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} |
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/** |
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* Creates a small progress bar to show percent of votes for an option. Since |
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* width is limited, the percentage is scaled to 20 steps (5% increments). |
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* |
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* @param {number} voteCount - Number of votes for this option |
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* @param {number} totalVotes - Total votes cast in the poll |
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* @returns {string} Text snippet with bar and vote totals |
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*/ |
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export function progressBarText(voteCount: number, totalVotes: number) { |
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if (voteCount === 0 || totalVotes === 0) { |
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return ''; |
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} |
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// For progress bar, calculate share of votes and scale it |
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const percentage = (voteCount * 100) / totalVotes; |
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const progress = Math.round((percentage / 100) * 35); |
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return '█'.repeat(progress); |
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} |
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/** |
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* Builds a line in the card for a single choice, including |
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* the current totals and voting action. |
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* |
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* @param {number} i - Index to identify the choice |
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* @param {object} state - Text of the choice |
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* @param {number} totalVotes - Total votes cast in poll state |
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* @param {string} serializedState - Serialized poll state to send in events |
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* @param {string} creator - creator of the option |
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* @returns {chatV1.Schema$GoogleAppsCardV1Section} card section |
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*/ |
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export function choiceSection(i: number, state: PollState, totalVotes: number, serializedState: string, creator = '') { |
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if (state.votes === undefined) { |
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state.votes = {}; |
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} |
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if (state.votes[i] === undefined) { |
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state.votes[i] = []; |
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} |
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const voteCount = state.votes[i].length; |
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const choiceTag = choice(i, state.choices[i], voteCount, totalVotes, serializedState); |
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if (creator) { |
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choiceTag.decoratedText!.topLabel = 'Added by ' + creator; |
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} |
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const section: chatV1.Schema$GoogleAppsCardV1Section = { |
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widgets: [choiceTag], |
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}; |
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if (state.votes[i].length > 0 && !state.anon) { |
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section.collapsible = true; |
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section.uncollapsibleWidgetsCount = 1; |
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// @ts-ignore: already defined above |
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section.widgets.push({ |
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'textParagraph': { |
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'text': state.votes[i].map((u) => u.name).join(', '), |
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}, |
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}); |
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} |
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return section; |
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} |
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/** |
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* Builds a line in the card for a single choice, including |
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* the current totals and voting action. |
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* |
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* @param {number} index - Index to identify the choice |
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* @param {string|undefined} text - Text of the choice |
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* @param {number} voteCount - Current number of votes cast for this item |
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* @param {number} totalVotes - Total votes cast in poll |
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* @param {string} state - Serialized state to send in events |
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* @returns {chatV1.Schema$GoogleAppsCardV1Widget} card widget |
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*/ |
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function choice( |
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index: number, text: string, voteCount: number, totalVotes: number, |
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state: string): chatV1.Schema$GoogleAppsCardV1Widget { |
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const progressBar = progressBarText(voteCount, totalVotes); |
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return { |
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decoratedText: { |
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bottomLabel: `${progressBar} ${voteCount}`, |
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text: text, |
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button: { |
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text: 'vote', |
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onClick: { |
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action: { |
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function: 'vote', |
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parameters: [ |
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{ |
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key: 'state', |
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value: state, |
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}, |
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{ |
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key: 'index', |
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value: index.toString(10), |
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}, |
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], |
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}, |
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}, |
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}, |
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}, |
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}; |
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} |
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dyaskur /
google-chat-poll
