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Add forecast based on exisiting data + Bump the version to v2.4 (#26)
* Add forecast * - Few bugfixes - Update README - Update the demo gif in the README file - Add some details in the forecast form on how the forecast is calculated * Add forecast to the list of features
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,164 @@ | ||
| import React, { useState, useRef } from 'react' | ||
| import { Form, Modal, Container, Button, Col, Alert } from 'react-bootstrap/' | ||
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| const checkBoxDefaultLabel = "Display forecast" | ||
| const minForecastBackwardsDays = 10 | ||
| const minForecastForwardDays = 10 | ||
| const maxForecastForwardDays = 365 * 10 | ||
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| const ForecastChooser = (props) => { | ||
| const [showModal, setShowModal] = useState(false); | ||
| const [checkBoxLabel, setCheckBoxLabel] = useState(checkBoxDefaultLabel); | ||
| const [showAlert, setShowAlert] = useState(false); | ||
| const [alertText, setAlertText] = useState(""); | ||
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| const forecastBasedOnLastInput = useRef(); | ||
| const forecastBasedOnLastSelect = useRef(); | ||
| const forecastForwardInput = useRef(); | ||
| const forecastForwardSelect = useRef(); | ||
| const forecastValues = useRef(); | ||
| const forecastCheckBox = useRef(); | ||
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| const onForecastCheckBoxChanged = (event) => { | ||
| if (event.target.checked) { | ||
| setShowModal(true); | ||
| setShowAlert(false); | ||
| } | ||
| else { | ||
| setCheckBoxLabel(checkBoxDefaultLabel); | ||
| props.onForecastProps(null); | ||
| } | ||
| } | ||
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| const closeModal = () => { | ||
| setShowModal(false); | ||
| setCheckBoxLabel(checkBoxDefaultLabel); | ||
| forecastCheckBox.current.checked = false; | ||
| props.onForecastProps(null); | ||
| setShowAlert(false); | ||
| } | ||
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| const calculateDays = (input, select) => { | ||
| switch (select) { | ||
| case "Days": | ||
| return parseInt(input); | ||
| case "Weeks": | ||
| return input * 7; | ||
| case "Months": | ||
| let monthsAgo = new Date(); | ||
| monthsAgo.setMonth(monthsAgo.getMonth() - input); | ||
| let now = new Date(); | ||
| const oneDay = 24 * 60 * 60 * 1000; // hours*minutes*seconds*milliseconds | ||
| return Math.round(Math.abs((now - monthsAgo) / oneDay)); | ||
| case "Years": | ||
| return input * 365; | ||
| default: | ||
| return parseInt(input); | ||
| } | ||
| } | ||
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| const validateForecastPropsData = (forecastProps) => { | ||
| if (forecastProps.daysBackwards < minForecastBackwardsDays) { | ||
| setShowAlert(true); | ||
| setAlertText("The forecast must be based on at least 10 days of data"); | ||
| return false; | ||
| } | ||
| if (forecastProps.daysForward < minForecastForwardDays) { | ||
| setShowAlert(true); | ||
| setAlertText("The forecast must show at least 10 days forward"); | ||
| return false; | ||
| } | ||
| if (forecastProps.daysForward > maxForecastForwardDays) { | ||
| setShowAlert(true); | ||
| setAlertText("The forecast cannot show more than 10 years forward"); | ||
| return false; | ||
| } | ||
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| return true; | ||
| } | ||
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| const forecastPropsSelected = () => { | ||
| let forecastProps = { | ||
| daysBackwards: calculateDays(forecastBasedOnLastInput.current.value, forecastBasedOnLastSelect.current.value), | ||
| daysForward: calculateDays(forecastForwardInput.current.value, forecastForwardSelect.current.value), | ||
| numValues: parseInt(forecastValues.current.value) | ||
| } | ||
| if (!validateForecastPropsData(forecastProps)) { | ||
| return; | ||
| } | ||
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| let checkBoxNewLabel = `Display ${forecastForwardInput.current.value} ${forecastForwardSelect.current.value} forecast based on the last ${forecastBasedOnLastInput.current.value} ${forecastBasedOnLastSelect.current.value}`; | ||
| setCheckBoxLabel(checkBoxNewLabel) | ||
| setShowModal(false); | ||
| props.onForecastProps(forecastProps) | ||
| } | ||
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| return ( | ||
| <Container> | ||
| <Form> | ||
| <h3>Forecast</h3> | ||
| <Form.Check custom type="checkbox" ref={forecastCheckBox} id="display-forecast-checkbox" label={checkBoxLabel} onChange={onForecastCheckBoxChanged}/> | ||
| </Form> | ||
| <Modal show={showModal} onHide={closeModal}> | ||
| <Form onSubmit={forecastPropsSelected}> | ||
| <Modal.Header closeButton> | ||
| <Modal.Title>Forecast Properties</Modal.Title> | ||
| </Modal.Header> | ||
| <Modal.Body> | ||
| <Form.Group> | ||
| <Form.Label>Display forecast based on the last:</Form.Label> | ||
| <Form.Row> | ||
| <Col> | ||
| <Form.Control ref={forecastBasedOnLastInput} type="number" min="1" defaultValue="3" required/> | ||
| </Col> | ||
| <Col> | ||
| <Form.Control ref={forecastBasedOnLastSelect} as="select" defaultValue="Months"> | ||
| <option>Days</option> | ||
| <option>Weeks</option> | ||
| <option>Months</option> | ||
| <option>Years</option> | ||
| </Form.Control> | ||
| </Col> | ||
| </Form.Row> | ||
| </Form.Group> | ||
| <Form.Group> | ||
| <Form.Label>Display forecast ahead:</Form.Label> | ||
| <Form.Row> | ||
| <Col> | ||
| <Form.Control ref={forecastForwardInput} type="number" min="1" defaultValue="3" required/> | ||
| </Col> | ||
| <Col> | ||
| <Form.Control ref={forecastForwardSelect} as="select" defaultValue="Months"> | ||
| <option>Days</option> | ||
| <option>Weeks</option> | ||
| <option>Months</option> | ||
| <option>Years</option> | ||
| </Form.Control> | ||
| </Col> | ||
| </Form.Row> | ||
| </Form.Group> | ||
| <Form.Group> | ||
| <Form.Label>Number of forecast values to calculate:</Form.Label> | ||
| <Form.Control ref={forecastValues} type="number" min="10" max="100" defaultValue="10" required/> | ||
| </Form.Group> | ||
| <p>The forecast is based on <a target="_blank" rel="noopener noreferrer" href="https://en.wikipedia.org/wiki/Linear_least_squares">Linear Least Squares</a> which creates a regression line from the existing stargazer data and extends this line into the future</p> | ||
| <Form.Group> | ||
| <Alert variant="danger" show={showAlert}>{alertText}</Alert> | ||
| </Form.Group> | ||
| </Modal.Body> | ||
| <Modal.Footer> | ||
| <Button variant="secondary" onClick={closeModal}> | ||
| Close | ||
| </Button> | ||
| <Button variant="primary" type="submit"> | ||
| Ok | ||
| </Button> | ||
| </Modal.Footer> | ||
| </Form> | ||
| </Modal> | ||
| </Container> | ||
| ) | ||
| } | ||
|
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||
| export default ForecastChooser |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -87,7 +87,7 @@ const GitHubAuthForm = (props) => { | |
| </Button> | ||
| </Modal.Footer> | ||
| </Form> | ||
| </Modal> | ||
| </Modal> | ||
| ) | ||
| } | ||
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