import { DESCRIPTION_TYPE } from '../constants'; /** * Checks the time difference between two notes from their 'created_at' dates * returns an integer */ export const getTimeDifferenceMinutes = (noteBeggining, noteEnd) => { const descriptionNoteBegin = new Date(noteBeggining.created_at); const descriptionNoteEnd = new Date(noteEnd.created_at); const timeDifferenceMinutes = (descriptionNoteEnd - descriptionNoteBegin) / 1000 / 60; return Math.ceil(timeDifferenceMinutes); }; /** * Checks if a note is a system note and if the content is description * * @param {Object} note * @returns {Boolean} */ export const isDescriptionSystemNote = note => note.system && note.note === DESCRIPTION_TYPE; /** * Collapses the system notes of a description type, e.g. Changed the description, n minutes ago * the notes will collapse as long as they happen no more than 10 minutes away from each away * in between the notes can be anything, another type of system note * (such as 'changed the weight') or a comment. * * @param {Array} notes * @returns {Array} */ export const collapseSystemNotes = notes => { let lastDescriptionSystemNote = null; let lastDescriptionSystemNoteIndex = -1; return notes.slice(0).reduce((acc, currentNote) => { const note = currentNote.notes[0]; if (isDescriptionSystemNote(note)) { // is it the first one? if (!lastDescriptionSystemNote) { lastDescriptionSystemNote = note; lastDescriptionSystemNoteIndex = acc.length; } else if (lastDescriptionSystemNote) { const timeDifferenceMinutes = getTimeDifferenceMinutes(lastDescriptionSystemNote, note); // are they less than 10 minutes apart from the same user? if (timeDifferenceMinutes > 10 || note.author.id !== lastDescriptionSystemNote.author.id) { // update the previous system note lastDescriptionSystemNote = note; lastDescriptionSystemNoteIndex = acc.length; } else { // set the first version to fetch grouped system note versions note.start_description_version_id = lastDescriptionSystemNote.description_version_id; // delete the previous one acc.splice(lastDescriptionSystemNoteIndex, 1); // update the previous system note index lastDescriptionSystemNoteIndex = acc.length; } } } acc.push(currentNote); return acc; }, []); }; // for babel-rewire export default {};