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import * as iter from './iterator.js';
const RUN_COALESCE_MAX_INTERVAL = 10 /* min */ * 60 /* sec */ * 1000; /* ms */
export function runs(messages, self) {
const bareRuns = iter.chunkBy(messages, runKey, continueRun);
return iter.map(bareRuns, (run) => summarizeRun(self, run));
}
function summarizeRun(self, { key, chunk }) {
const [sender, at] = key;
return {
sender: sender.name,
ownMessage: sender.id === self.id,
messages: chunk
};
}
function runKey(message) {
return [message.sender, message.at];
}
function continueRun([lastSender, lastAt], [newSender, newAt]) {
const { id: lastId, name: lastName } = lastSender;
const { id: newId, name: newName } = newSender;
if (lastId !== newId) {
return false;
}
if (lastName !== newName) {
return false;
}
return newAt - lastAt < RUN_COALESCE_MAX_INTERVAL;
}
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