From 3b9ee93eb32a2a12d8ac03237b750cd93bb840c7 Mon Sep 17 00:00:00 2001
From: Felix Henninger <mailbox@felixhenninger.com>
Date: Sat, 15 Aug 2020 09:51:18 +0200
Subject: [PATCH] Port factorial design generator

---
 .../Loop/DesignWizard/FactorialModal.js       | 155 ++++++++++++++++++
 .../components/Content/Loop/Grid/footer.js    |  10 +-
 2 files changed, 158 insertions(+), 7 deletions(-)
 create mode 100644 packages/builder/src/components/ComponentOptions/components/Content/Loop/DesignWizard/FactorialModal.js

diff --git a/packages/builder/src/components/ComponentOptions/components/Content/Loop/DesignWizard/FactorialModal.js b/packages/builder/src/components/ComponentOptions/components/Content/Loop/DesignWizard/FactorialModal.js
new file mode 100644
index 000000000..1c2c28cd0
--- /dev/null
+++ b/packages/builder/src/components/ComponentOptions/components/Content/Loop/DesignWizard/FactorialModal.js
@@ -0,0 +1,155 @@
+import React, { Fragment, Component } from 'react'
+
+import { Formik, Form, Field } from 'formik'
+import { ModalHeader, ModalBody, ModalFooter, Button } from 'reactstrap'
+
+import Modal from '../../../../../Modal'
+import { Table, DefaultRow } from '../../../../../Form/table'
+import { Input } from '../../../../../Form'
+
+// Logic -----------------------------------------------------------------------
+// (copied from the library combinatorics implementation)
+
+const product = function* (...sets) {
+  let thresholds = sets
+    .map(s => Math.max(s.length, 1)).reverse()
+    .reduce(
+      (acc, current, i) => acc.concat([
+        (acc[i - 1] || 1) * current
+      ]), []
+    )
+    .reverse()
+
+  for (let counter = 0; counter < thresholds[0]; counter++) {
+    yield sets.map(
+      (s, i) => s[Math.floor(counter / (thresholds[i + 1] || 1)) % s.length]
+    )
+  }
+}
+
+const generateTable = (factors) => {
+  const names = factors.map(f => f.name)
+  const levels = factors.map(f => f.levels.split('\n').filter(c => c !== ''))
+
+  return {
+    columns: names.map(name => ({ name, type: 'string' })),
+    rows: Array.from(product(...levels)),
+  }
+}
+
+// UI --------------------------------------------------------------------------
+
+const TableRow = ({ name, arrayHelpers }) =>
+  <DefaultRow name={ name } arrayHelpers={ arrayHelpers } wrapper={ Fragment }>
+    <td>
+      <Field
+        name={ `${ name }.name` }
+        component={ Input }
+        placeholder="Parameter name"
+        className="text-monospace"
+      />
+    </td>
+    <td>
+      <Field
+        name={ `${ name }.levels` }
+        component="textarea"
+        placeholder="Levels (one line each)"
+        className="form-control text-monospace"
+        style={{
+          height: `${ (2 + 1.5) * 1.6 }em`, // TODO: Re-enable dynamic sizing
+          minHeight: '80px',
+          maxHeight: '150px',
+        }}
+      />
+    </td>
+  </DefaultRow>
+
+const Header = () =>
+  <thead>
+    <tr>
+      <th />
+      <th className="px-2 pt-3">Factor</th>
+      <th className="px-2 pt-3">Levels</th>
+      <th />
+    </tr>
+  </thead>
+
+class FactorialModal extends Component {
+  constructor(props) {
+    super(props)
+    this.state = { isOpen: false }
+    this.promiseHandlers = {}
+  }
+
+  toggle() {
+    this.setState({ isOpen: !this.state.isOpen })
+  }
+
+  async show() {
+    this.toggle()
+    return new Promise(
+      (resolve, reject) => {
+        this.promiseHandlers = {
+          resolve: result => {
+            this.setState({ isOpen: false })
+            return resolve(result)
+          },
+          reject
+        }
+      }
+    )
+  }
+
+  render() {
+    return <Modal
+      isOpen={ this.state.isOpen }
+      modalProps={{ size: 'lg' }}
+    >
+      <Formik
+        initialValues={{
+          factors: [
+            { name: 'Factor A', levels: 'Level A1\nLevel A2' },
+            { name: 'Factor B', levels: 'Level B1\nLevel B2' },
+          ]
+        }}
+        onSubmit={ (values) => {
+          console.log('in Onsubmit')
+          const table = generateTable(values.factors)
+          if (this.promiseHandlers.resolve) {
+            this.promiseHandlers.resolve(table)
+          }
+        } }
+      >
+        <Form>
+          <div className="modal-content">
+            <ModalHeader toggle={ this.toggle }>
+              Generate factorial design
+            </ModalHeader>
+            <ModalBody>
+              <p><strong>Please specify the factors in your design, as well as their levels.</strong> <span className="text-muted">The resulting design is fully crossed, meaning that in the loop, every level of a factor is combined with every level of every other factor.</span></p>
+              <hr style={{ marginBottom: '0' }} />
+            </ModalBody>
+            <Table
+              name="factors"
+              columns={ 2 }
+              row={ TableRow }
+              header={ Header }
+              defaultItem={{ name: '', levels: '' }}
+              className="grid border-top-0 mb-0"
+            />
+            <ModalFooter>
+              <Button outline color="secondary" onClick={ this.toggle }>
+                Close
+              </Button>
+              <Button outline color="primary" type="submit">
+                Generate
+              </Button>
+            </ModalFooter>
+          </div>
+        </Form>
+      </Formik>
+    </Modal>
+  }
+}
+
+export default FactorialModal
diff --git a/packages/builder/src/components/ComponentOptions/components/Content/Loop/Grid/footer.js b/packages/builder/src/components/ComponentOptions/components/Content/Loop/Grid/footer.js
index dd4fae61e..a6c1d68c7 100644
--- a/packages/builder/src/components/ComponentOptions/components/Content/Loop/Grid/footer.js
+++ b/packages/builder/src/components/ComponentOptions/components/Content/Loop/Grid/footer.js
@@ -1,11 +1,11 @@
-import React, { useState } from 'react'
+import React, { useState, createRef } from 'react'
 
 import { ButtonDropdown, Button,
   DropdownToggle, DropdownMenu, DropdownItem  } from 'reactstrap'
 import { range } from 'lodash'
 
 import Icon from '../../../../../Icon'
-//import FactorialModal from './components/FactorialModal'
+import FactorialModal from '../DesignWizard/FactorialModal'
 import { useArrayContext } from '../../../../../Form/array'
 
 import Uploader from '../../../../../Uploader'
@@ -29,7 +29,7 @@ const exportGrid = (data, columns) => {
 
 export default ({ addItem, columns }) => {
   const [dropdownOpen, setDropdownOpen] = useState(false)
-  //const factorialModal = createRef()
+  const factorialModal = createRef()
   const { dispatch, overwriteAll } = useArrayContext()
 
   return (
@@ -37,9 +37,7 @@ export default ({ addItem, columns }) => {
       <tr>
         <td />
         <td colSpan={ columns }>
-            { /*
           <FactorialModal ref={ factorialModal } />
-            */ }
           <ButtonDropdown
             size="sm"
             className="w-100"
@@ -67,7 +65,6 @@ export default ({ addItem, columns }) => {
               }}
             />
             <DropdownMenu right>
-            { /*
               <DropdownItem header>Generate</DropdownItem>
               <DropdownItem
                 onClick={ () => factorialModal.current.show().then(result => {
@@ -76,7 +73,6 @@ export default ({ addItem, columns }) => {
               >
                 Factorial design
               </DropdownItem>
-              */ }
               <DropdownItem divider />
               <DropdownItem header>Repeat</DropdownItem>
               <DropdownItem