| 1 | module.exports = () => {
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| 2 | function winnerFromEndMsg(invite, maybeGameEndMsg) {
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| 3 | if (!invite || !maybeGameEndMsg) {
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| 4 | return null;
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| 5 | }
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| 6 | const players = [invite.value.author, invite.value.content.inviting];
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| 7 | return winnerFromEndMsgPlayers(players, maybeGameEndMsg);
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| 8 | }
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| 9 |
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| 10 | function winnerFromEndMsgPlayers(players, maybeGameEndMsg) {
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| 11 | let winner;
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| 12 |
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| 13 | if (!maybeGameEndMsg || !players) {
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| 14 | return null;
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| 15 | }
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| 16 | switch (maybeGameEndMsg.value.content.status) {
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| 17 | case 'mate':
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| 18 | return maybeGameEndMsg.value.author;
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| 19 | case 'draw':
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| 20 | return null;
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| 21 | case 'resigned':
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| 22 | [winner] = players.filter(playerId => playerId != maybeGameEndMsg.value.author);
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| 23 | return winner;
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| 24 | default:
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| 25 | return null;
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| 26 | }
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| 27 | }
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| 28 |
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| 29 | return {
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| 30 | winnerFromEndMsg,
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| 31 | winnerFromEndMsgPlayers,
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| 32 | };
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| 33 | };
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