make client own package (using create-react-app)

client/src/App.css

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+header h1 {
+    margin-left: 12px;
+}
+
+button {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 12px;
+}
+
+.home {
+    display: flex;
+}
+
+.home > div {
+    padding: 12px;
+}

client/src/App.js

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+import React, { Component } from 'react';
+import LetterOptions from './LetterOptions';
+import Button from './Button';
+import Preview from './Preview';
+import {generatePdf} from './apiHelper';
+
+import './App.css';
+
+class App extends Component {
+  render() {
+    const state = this.state || {};
+
+    return (
+      <div className="home">
+        <div>
+          <LetterOptions onChange={this._onChange.bind(this)} />
+        </div>
+        <div>
+          <Button onClick={this._onGenerate.bind(this)} text="Backe PDF"/>
+          <Preview
+            pdfUrl={state.pdfUrl}
+            pdfIsLoading={state.pdfIsLoading}
+            pdfError={state.pdfError}
+          />
+        </div>
+      </div>
+    );
+  }
+
+  _onGenerate() {
+    const state = this.state || {};
+    this.setState({
+      pdfIsLoading: true,
+      pdfError: null
+    })
+
+    generatePdf(state)
+      .then((data) => {
+        const {id} = data;
+        this.setState({
+          pdfIsLoading: false,
+          pdfUrl: `/api/pdf/${id}`
+        });
+      })
+      .catch((error) => {
+        this.setState({
+          pdfIsLoading: false,
+          pdfError: error,
+          pdfUrl: null
+        });
+      });
+  }
+
+  _onChange(name, event) {
+    if (!name) {
+      return;
+    }
+    const value = event && event.target && event.target.value;
+    this.setState({[name]: value || undefined})
+  }
+}
+
+export default App;

client/src/App.test.js

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+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+it('renders without crashing', () => {
+  const div = document.createElement('div');
+  ReactDOM.render(<App />, div);
+});

client/src/Button.js

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+import React from 'react';
+
+export default function(props) {
+  return (
+    <button onClick={props.onClick}>{props.text}</button>
+  );
+}

client/src/Header.js

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+import React from 'react';
+
+export default function() {
+  return (
+    <header className="header">
+      <h1>PDFer</h1>
+    </header>
+  )
+}

client/src/Input.js

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+import React from 'react';
+
+export default function(props) {
+  return (
+    <label>
+      {props.text}
+      <input
+        className={props.name}
+        type="text"
+        placeholder={props.placeholder}
+        onChange={props.onchange.bind(null, props.name)}
+      />
+    </label>
+  );
+}

client/src/Layout.js

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+import React from 'react';
+
+import Header from './Header';
+
+export default function(props) {
+  return (
+    <div id="app">
+      <Header />
+      <div id="content">
+        { props.children }
+      </div>
+    </div>
+  );
+}

client/src/LetterOptions.css

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+.letter-options {
+    width: 320px;
+}
+
+.letter-options label {
+    display: block;
+    color: #333;
+    font-size: 14px;
+    font-weight: bold;
+}
+.letter-options input,
+.letter-options textarea,
+.letter-options select {
+    margin-top: 3px;
+    margin-bottom: 12px;
+    width: 100%;
+}
+
+.letter-options textarea {
+    resize: vertical;
+}
+
+.letter-options textarea.address {
+    height: 80px;
+}
+
+.letter-options textarea.body {
+    height: 340px;
+}
+
+.letter-options .Collapsible {
+    background-color: #ddd;
+    border-radius: 2px;
+}
+
+.letter-options .Collapsible__trigger {
+    padding-left: 6px;
+    cursor: pointer;
+    line-height: 24px;
+    font-size: 14px;
+    font-weight: bold;
+}
+
+.letter-options .Collapsible__trigger.is-closed:before {
+    content: "> ";
+}
+
+.letter-options .Collapsible__trigger.is-open:before {
+    content: "< ";
+}
+
+.letter-options .Collapsible {
+    margin-bottom: 12px;
+}
+
+.letter-options .Collapsible__contentInner {
+    background-color: #fff;
+    padding-top: 12px;
+    padding-left: 12px;
+}
+

client/src/LetterOptions.js

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+import React from 'react';
+
+import Collapsible from 'react-collapsible';
+import Input from './Input';
+import TextAreaInput from './TextAreaInput';
+import Select from './Select';
+
+import './LetterOptions.css';
+
+const EXAMPLE_ADDRESS = 'Max Mustermann\nMusterstr. 73\n12345 Musterstadt';
+
+export default function(props) {
+  const templateTypeOptions = [
+    {
+      value: 'brief-fam',
+      name: 'Familie'
+    },
+    {
+      value: 'brief-valerie',
+      name: 'Valerie'
+    },
+    {
+      value: 'brief-rain',
+      name: 'Rain Baumeister'
+    },
+    {
+      value: 'brief-thomas',
+      name: 'Thomas'
+    }
+  ];
+
+  return (
+    <div className="letter-options">
+      <Select
+        name="template"
+        text="Vorlage"
+        onchange={props.onChange}
+        value={props.template}
+        options={templateTypeOptions}
+      />
+
+      <TextAreaInput
+        name="address"
+        text="Adresse"
+        placeholder={EXAMPLE_ADDRESS}
+        onchange={props.onChange}
+        value={props.address}
+      />
+      <Input
+        name="subject"
+        text="Betreff"
+        placeholder="Betreffzeile"
+        onchange={props.onChange}
+        value={props.subject}
+      />
+      <Collapsible trigger="Bezugszeichenzeile">
+        <Input
+          name="yourRef"
+          text="Ihr Zeichen"
+          onchange={props.onChange}
+          value={props.yourRef}
+        />
+        <Input
+          name="yourMail"
+          text="Ihr Schreiben vom"
+          onchange={props.onChange}
+          value={props.yourMail}
+        />
+        <Input
+          name="customer"
+          text="Kundernummer"
+          onchange={props.onChange}
+          value={props.customer}
+        />
+        <Input
+          name="invoice"
+          text="Rechnung"
+          onchange={props.onChange}
+          value={props.invoice}
+        />
+        <Input
+          name="yourMail"
+          text="Ihr Schreiben vom"
+          onchange={props.onChange}
+          value={props.yourMail}
+        />
+      </Collapsible>
+      <Collapsible trigger="Sonstige Einstellungen">
+        <Input
+          name="date"
+          text="Datum"
+          placeholder="Heute"
+          onchange={props.onChange}
+          value={props.date}
+        />
+        <Input
+          name="opening"
+          text="Eröffnung"
+          placeholder="Sehr geehrte Damen und Herren"
+          onchange={props.onChange}
+          value={props.opening}
+        />
+        <Input
+          name="closing"
+          text="Grußform"
+          placeholder="Mit freundlichen Grüßen"
+          onchange={props.onChange}
+          value={props.closing}
+        />
+      </Collapsible>
+      <TextAreaInput
+        name="body"
+        text="Brieftext"
+        onchange={props.onChange}
+        placeholder="Inhalt des Briefes"
+        value={props.body}
+      />
+    </div>
+  );
+};

client/src/Preview.js

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+import React from 'react';
+
+export default props => {
+  if (props.pdfIsLoading) {
+    return (
+      <div>Lade...</div>
+    );
+  }
+
+  if (props.pdfError) {
+    return (
+      <div>{props.pdfError}</div>
+    );
+  }
+
+  if (!props.pdfUrl) {
+    return (
+      <div>Knopf drücken dann gibts hier was zu sehen!</div>
+    );
+  }
+
+  const styles = {
+    width: '700px',
+    height: '1050px'
+  };
+
+  return (
+    <embed src={props.pdfUrl} style={styles} type="application/pdf" />
+  );
+};

client/src/Select.js

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+import React from 'react';
+
+export default (props) => {
+  const { options = [] } = props;
+
+  return (
+    <label>
+      {props.text}
+      <select
+        className={props.name}
+        onChange={props.onchange.bind(null, props.name)}
+      >
+        {options.map((option) => <option label={option.name} value={option.value} key={option.value}/>)}
+      </select>
+    </label>
+  );
+}

client/src/TextAreaInput.js

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+import React from 'react';
+
+export default function(props) {
+  return (
+    <label>
+      {props.text}
+      <textarea
+        className={props.name}
+        placeholder={props.placeholder}
+        onChange={props.onchange.bind(null, props.name)}
+      />
+    </label>
+  );
+}

client/src/apiHelper.js

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+export function generatePdf(state){
+  return fetch('/api/pdf/generate/brief', {
+    method: 'POST',
+    headers: {
+      'Content-Type': 'application/json'
+    },
+    body: JSON.stringify(state)
+  }).then(function(res) {
+    if (res.status !== 200) {
+      console.error('request failed');
+      return;
+    }
+    return res.json();
+  });
+}

client/src/index.css

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+html {
+  box-sizing: border-box;
+}
+
+*, *:before, *:after {
+  box-sizing: inherit;
+}

client/src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+import './index.css';
+
+ReactDOM.render(
+  <App />,
+  document.getElementById('root')
+);

client/src/logo.svg

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+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
+    <g fill="#61DAFB">
+        <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
+        <circle cx="420.9" cy="296.5" r="45.7"/>
+        <path d="M520.5 78.1z"/>
+    </g>
+</svg>