/
selectors.js
182 lines (169 loc) · 4.66 KB
/
selectors.js
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import { createSelector, createStructuredSelector } from 'reselect';
import isEmpty from 'lodash/isEmpty';
import { format } from 'd3-format';
import groupBy from 'lodash/groupBy';
import moment from 'moment';
import { getColorPalette } from 'utils/data';
import {
getMeansData,
getStdDevData,
getDatesData,
getChartConfig
} from 'components/widgets-v2/utils/data';
const getAlerts = state => state.data || null;
const getColors = state => state.colors || null;
const getActiveData = state => state.settings.activeData || null;
const getWeeks = state => state.settings.weeks || null;
const getDataset = state => state.settings.dataset || null;
const getSentences = state => state.config.sentence || null;
export const getData = createSelector(
[getAlerts, getDataset],
(data, dataset) => {
if (!data || isEmpty(data)) return null;
const groupedByYear = groupBy(data, 'year');
const years = [];
const latestFullWeek = moment().subtract(2, 'w');
const lastWeek = {
isoWeek: latestFullWeek.isoWeek(),
year: latestFullWeek.year()
};
const min_year = dataset === 'MODIS' ? 2001 : 2016;
for (let i = min_year; i <= lastWeek.year; i += 1) {
years.push(i);
}
const yearLengths = {};
years.forEach(y => {
const lastIsoWeek =
lastWeek.year !== parseInt(y, 10)
? moment(`${y}-12-31`).isoWeek()
: lastWeek.isoWeek;
yearLengths[y] = lastIsoWeek;
});
const zeroFilledData = [];
years.forEach(d => {
const yearDataByWeek = groupBy(groupedByYear[d], 'week');
for (let i = 1; i <= yearLengths[d]; i += 1) {
zeroFilledData.push(
yearDataByWeek[i]
? yearDataByWeek[i][0]
: { count: 0, week: i, year: parseInt(d, 10) }
);
}
});
return zeroFilledData;
}
);
export const getMeans = createSelector([getData], data => {
if (!data) return null;
return getMeansData(
data,
moment()
.subtract(2, 'w')
.format('YYYY-MM-DD')
);
});
export const getStdDev = createSelector(
[getMeans, getData],
(data, rawData) => {
if (!data) return null;
return getStdDevData(data, rawData);
}
);
export const getDates = createSelector([getStdDev], data => {
if (!data) return null;
return getDatesData(data);
});
export const parseData = createSelector([getDates, getWeeks], (data, weeks) => {
if (!data) return null;
return data.slice(-weeks);
});
export const parseConfig = createSelector([getColors], colors =>
getChartConfig(
colors,
moment()
.subtract(2, 'w')
.format('YYYY-MM-DD')
)
);
export const parseSentence = createSelector(
[parseData, getColors, getActiveData, getSentences, getDataset],
(data, colors, activeData, sentence, dataset) => {
if (!data) return null;
let lastDate = data[data.length - 1] || {};
if (!isEmpty(activeData)) {
lastDate = activeData;
}
const colorRange = getColorPalette(colors.ramp, 5);
let statusColor = colorRange[4];
const {
count,
twoPlusStdDev,
plusStdDev,
minusStdDev,
twoMinusStdDev,
date
} =
lastDate || {};
let status = 'unusually low';
if (twoPlusStdDev && count > twoPlusStdDev[1]) {
status = 'unusually high';
statusColor = colorRange[0];
} else if (
twoPlusStdDev &&
count <= twoPlusStdDev[1] &&
count > twoPlusStdDev[0]
) {
status = 'high';
statusColor = colorRange[1];
} else if (
plusStdDev &&
minusStdDev &&
count <= plusStdDev[1] &&
count > minusStdDev[0]
) {
status = 'average';
statusColor = colorRange[2];
} else if (
twoMinusStdDev &&
count >= twoMinusStdDev[0] &&
count < twoMinusStdDev[1]
) {
status = 'low';
statusColor = colorRange[3];
}
const formattedData = moment(date).format('Do of MMMM YYYY');
const params = {
date: formattedData,
dataset,
count: {
value: format(',')(count),
color: colors.main
},
status: {
value: status,
color: statusColor
}
};
return { sentence, params };
}
);
export const parsePayload = payload => {
const payloadData = payload && payload.find(p => p.name === 'count');
const payloadValues = payloadData && payloadData.payload;
if (payloadValues) {
const startDate = moment()
.year(payloadValues.year)
.week(payloadValues.week);
return {
startDate: startDate.format('YYYY-MM-DD'),
endDate: startDate.add(7, 'days'),
...payloadValues
};
}
return {};
};
export default createStructuredSelector({
data: parseData,
dataConfig: parseConfig,
sentence: parseSentence
});