Merge branch 'tutorial'

src/actions/tutorialBuilderActions.js

@@ -85,10 +85,18 @@ export const removeErrorStep = (index) => (dispatch, getState) => {
   });
 };
 
-export const changeContent = (index, property, content) => (dispatch, getState) => {
+export const changeContent = (content, index, property1, property2) => (dispatch, getState) => {
   var steps = getState().builder.steps;
   var step = steps[index];
-  step[property] = content;
+  if(property2){
+    if(step[property1] && step[property1][property2]){
+      step[property1][property2] = content;
+    } else {
+      step[property1] = {[property2]: content};
+    }
+  } else {
+    step[property1] = content;
+  }
   dispatch({
     type: BUILDER_CHANGE_STEP,
     payload: steps
@@ -96,10 +104,16 @@ export const changeContent = (index, property, content) => (dispatch, getState)
   dispatch(changeTutorialBuilder());
 };
 
-export const deleteProperty = (index, property) => (dispatch, getState) => {
+export const deleteProperty = (index, property1, property2) => (dispatch, getState) => {
   var steps = getState().builder.steps;
   var step = steps[index];
-  delete step[property];
+  if(property2){
+    if(step[property1] && step[property1][property2]){
+      delete step[property1][property2];
+    }
+  } else {
+    delete step[property1];
+  }
   dispatch({
     type: BUILDER_DELETE_PROPERTY,
     payload: steps
@@ -170,12 +184,14 @@ export const setSubmitError = () => (dispatch, getState) => {
     dispatch(setError(undefined, 'title'));
   }
   var type = builder.steps.map((step, i) => {
+    // media and xml are directly checked for errors in their components and
+    // therefore do not have to be checked again
     step.id = i+1;
     if(i === 0){
       if(step.requirements && step.requirements.length > 0){
         var requirements = step.requirements.filter(requirement => typeof(requirement)==='number');
         if(requirements.length < step.requirements.length){
-          dispatch(changeContent(i, 'requirements', requirements));
+          dispatch(changeContent(requirements, i, 'requirements'));
         }
       }
       if(step.hardware === undefined || step.hardware.length < 1){
@@ -185,7 +201,7 @@ export const setSubmitError = () => (dispatch, getState) => {
         var hardwareIds = data.map(hardware => hardware.id);
         var hardware = step.hardware.filter(hardware => hardwareIds.includes(hardware));
         if(hardware.length < step.hardware.length){
-          dispatch(changeContent(i, 'hardware', hardware));
+          dispatch(changeContent(hardware, i, 'hardware'));
         }
       }
     }
@@ -255,9 +271,35 @@ export const readJSON = (json) => (dispatch, getState) => {
       steps: json.steps.map(() => {return {};})
     }
   });
+  // accept only valid attributes
+  var steps = json.steps.map((step, i) => {
+    var object = {
+      id: step.id,
+      type: step.type,
+      headline: step.headline,
+      text: step.text
+    };
+    if(i === 0){
+      object.hardware = step.hardware;
+      object.requirements = step.requirements;
+    }
+    if(step.xml){
+      object.xml = step.xml;
+    }
+    if(step.media && step.type === 'instruction'){
+      object.media = {};
+      if(step.media.picture){
+        object.media.picture = step.media.picture;
+      }
+      else if(step.media.youtube){
+        object.media.youtube = step.media.youtube;
+      }
+    }
+    return object;
+  });
   dispatch(tutorialTitle(json.title));
   dispatch(tutorialId(json.id));
-  dispatch(tutorialSteps(json.steps));
+  dispatch(tutorialSteps(steps));
   dispatch(setSubmitError());
   dispatch(progress(false));
 };

src/components/Tutorial/Builder/BlocklyExample.js

@@ -107,7 +107,7 @@ class BlocklyExample extends Component {
 
   setXml = () => {
     var xml = this.props.xml;
-    this.props.changeContent(this.props.index, 'xml', xml);
+    this.props.changeContent(xml, this.props.index, 'xml');
     this.setState({input: moment(Date.now()).format('LTS')});
   }
 
@@ -134,7 +134,8 @@ class BlocklyExample extends Component {
         {this.state.checked && !this.props.task ?
           <FormHelperText style={{lineHeight: 'initial'}}>Anmerkung: Man kann den initialen Setup()- bzw. Endlosschleifen()-Block löschen. Zusätzlich ist es möglich u.a. nur einen beliebigen Block auszuwählen, ohne dass dieser als deaktiviert dargestellt wird.</FormHelperText>
         : null}
-        {this.state.checked ? (() => {
+        {/* ensure that the correct xml-file is displayed in the workspace */}
+        {this.state.checked && this.state.xml? (() => {
           return(
             <div style={{marginTop: '10px'}}>
               <Grid container className={!this.props.value || this.props.error ? this.props.classes.errorBorder : null}>

src/components/Tutorial/Builder/Builder.js

@@ -58,10 +58,17 @@ class Builder extends Component {
       window.scrollTo(0, 0);
     }
     else{
+      // export steps without attribute 'url'
+      var steps = this.props.steps.map(step => {
+        if(step.url){
+          delete step.url;
+        }
+        return step;
+      });
       var tutorial = {
         id: this.props.id,
         title: this.props.title,
-        steps: this.props.steps
+        steps: steps
       }
       var blob = new Blob([JSON.stringify(tutorial)], { type: 'text/json' });
       saveAs(blob, `${detectWhitespacesAndReturnReadableResult(tutorial.title)}.json`);

src/components/Tutorial/Builder/Hardware.js

@@ -56,7 +56,7 @@ class Requirements extends Component {
         this.props.deleteError(this.props.index, 'hardware');
       }
     }
-    this.props.changeContent(this.props.index, 'hardware', hardwareArray);
+    this.props.changeContent(hardwareArray, this.props.index, 'hardware');
     if(hardwareArray.length === 0){
       this.props.setError(this.props.index, 'hardware');
     }

src/components/Tutorial/Builder/Media.js

@@ -0,0 +1,178 @@
+import React, { Component } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
+import { changeContent, deleteProperty, setError, deleteError } from '../../../actions/tutorialBuilderActions';
+
+import Textfield from './Textfield';
+
+import { withStyles } from '@material-ui/core/styles';
+import Switch from '@material-ui/core/Switch';
+import FormControlLabel from '@material-ui/core/FormControlLabel';
+import FormHelperText from '@material-ui/core/FormHelperText';
+import Radio from '@material-ui/core/Radio';
+import RadioGroup from '@material-ui/core/RadioGroup';
+import Button from '@material-ui/core/Button';
+
+const styles = (theme) => ({
+  errorColor: {
+    color: theme.palette.error.dark
+  },
+  errorBorder: {
+    border: `1px solid ${theme.palette.error.dark}`
+  },
+  errorButton: {
+    marginTop: '5px',
+    height: '40px',
+    backgroundColor: theme.palette.error.dark,
+    '&:hover':{
+      backgroundColor: theme.palette.error.dark
+    }
+  }
+});
+
+class Media extends Component {
+
+  constructor(props){
+    super(props);
+    this.state={
+      checked: props.value ? true : false,
+      error: false,
+      radioValue: !props.picture && !props.youtube ? 'picture' : props.picture ? 'picture' : 'youtube'
+    };
+  }
+
+  componentDidUpdate(props){
+    if(props.value !== this.props.value){
+      this.setState({ checked: this.props.value ? true : false });
+    }
+  }
+
+  onChangeSwitch = (value) => {
+    var oldValue = this.state.checked;
+    this.setState({checked: value});
+    if(oldValue !== value){
+      if(value){
+        this.props.setError(this.props.index, 'media');
+      } else {
+        this.props.deleteError(this.props.index, 'media');
+        this.props.deleteProperty(this.props.index, 'media');
+        this.props.deleteProperty(this.props.index, 'url');
+        this.setState({ error: false});
+      }
+    }
+  }
+
+  onChangeRadio = (value) => {
+    this.props.setError(this.props.index, 'media');
+    var oldValue = this.state.radioValue;
+    this.setState({radioValue: value, error: false});
+    // delete property 'oldValue', so that all old media files are reset
+    this.props.deleteProperty(this.props.index, 'media', oldValue);
+    if(oldValue === 'picture'){
+      this.props.deleteProperty(this.props.index, 'url');
+    }
+  }
+
+  uploadPicture = (pic) => {
+    if(!(/^image\/.*/.test(pic.type))){
+      this.props.setError(this.props.index, 'media');
+      this.setState({ error: true });
+      this.props.deleteProperty(this.props.index, 'url');
+    }
+    else {
+      this.props.deleteError(this.props.index, 'media');
+      this.setState({ error: false });
+      this.props.changeContent(URL.createObjectURL(pic), this.props.index, 'url');
+    }
+    this.props.changeContent(pic.name, this.props.index, 'media', 'picture');
+  }
+
+  render() {
+    return (
+      <div style={{marginBottom: '10px', padding: '18.5px 14px', borderRadius: '25px', border: '1px solid lightgrey', width: 'calc(100% - 28px)'}}>
+        <FormControlLabel
+          labelPlacement="end"
+          label={"Medien"}
+          control={
+            <Switch
+              checked={this.state.checked}
+              onChange={(e) => this.onChangeSwitch(e.target.checked)}
+              color="primary"
+            />
+          }
+        />
+        {this.state.checked ?
+          <div>
+            <RadioGroup row value={this.state.radioValue} onChange={(e) => {this.onChangeRadio(e.target.value);}}>
+              <FormControlLabel style={{color: 'black'}}
+                value="picture"
+                control={<Radio color="primary" />}
+                label="Bild"
+                labelPlacement="end"
+              />
+              <FormControlLabel style={{color: 'black'}}
+                value="youtube"
+                control={<Radio color="primary" />}
+                label="Youtube-Video"
+                labelPlacement="end"
+              />
+            </RadioGroup>
+            {this.state.radioValue === 'picture' ?
+              <div>
+                {!this.props.error ?
+                  <div>
+                    <FormHelperText style={{lineHeight: 'initial', marginBottom: '10px'}}>{`Beachte, dass das Foto zusätzlich in den Ordner public/media/tutorial unter dem Namen '${this.props.picture}' abgespeichert werden muss.`}</FormHelperText>
+                    <img src={this.props.url ? this.props.url : `/media/tutorial/${this.props.picture}`} alt={this.props.url ? '' : `Das Bild '${this.props.picture}' konnte nicht im Ordner public/media/tutorial gefunden werden und kann daher nicht angezeigt werden.`} style={{maxHeight: '180px', maxWidth: '360px', marginBottom: '5px'}}/>
+                  </div>
+                : <div
+                    style={{height: '150px', maxWidth: '250px', marginBottom: '5px', justifyContent: "center", alignItems: "center", display:"flex", padding: '20px'}}
+                    className={this.props.error ? this.props.classes.errorBorder : null} >
+                    {this.state.error ?
+                        <FormHelperText style={{lineHeight: 'initial', textAlign: 'center'}} className={this.props.classes.errorColor}>{`Die übergebene Datei entspricht nicht dem geforderten Bild-Format. Überprüfe, ob es sich um ein Bild handelt und versuche es nochmal.`}</FormHelperText>
+                      : <FormHelperText style={{lineHeight: 'initial', textAlign: 'center'}} className={this.props.classes.errorColor}>{`Wähle ein Bild aus.`}</FormHelperText>
+                    }
+                  </div>}
+                {/*upload picture*/}
+                <div>
+                  <input
+                    style={{display: 'none'}}
+                    accept="image/*"
+                    onChange={(e) => {this.uploadPicture(e.target.files[0]);}}
+                    id={`picture ${this.props.index}`}
+                    type="file"
+                  />
+                  <label htmlFor={`picture ${this.props.index}`}>
+                    <Button component="span" className={this.props.error ? this.props.classes.errorButton : null} style={{marginRight: '10px', marginBottom: '10px'}} variant='contained' color='primary'>Bild auswählen</Button>
+                  </label>
+                </div>
+              </div>
+            :
+              /*youtube-video*/
+              <div>
+                <Textfield value={this.props.value && this.props.value.youtube} property={'media'} property2={'youtube'} label={'Youtube-ID'} index={this.props.index} error={this.props.error} errorText={`Gib eine Youtube-ID ein.`}/>
+                {this.props.youtube && !this.props.error ?
+                  <div>
+                    <FormHelperText style={{lineHeight: 'initial', margin: '0 25px 10px 25px'}}>{`Stelle sicher, dass das unten angezeigte Youtube-Video funktioniert, andernfalls überprüfe die Youtube-ID.`}</FormHelperText>
+                    <div style={{position: 'relative', paddingBottom: '56.25%', height: 0}}>
+                      <iframe title={this.props.youtube} style={{borderRadius: '25px', position: 'absolute', top: '0', left: '0', width: '100%', height: '100%'}} src={`https://www.youtube.com/embed/${this.props.youtube}`} frameBorder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />
+                    </div>
+                  </div>
+                : null}
+              </div>
+            }
+          </div>
+        : null}
+      </div>
+    );
+  };
+}
+
+Media.propTypes = {
+  changeContent: PropTypes.func.isRequired,
+  deleteProperty: PropTypes.func.isRequired,
+  setError: PropTypes.func.isRequired,
+  deleteError: PropTypes.func.isRequired,
+};
+
+
+export default connect(null, { changeContent, deleteProperty, setError, deleteError })(withStyles(styles, {withTheme: true})(Media));

src/components/Tutorial/Builder/Requirements.js

@@ -23,7 +23,7 @@ class Requirements extends Component {
     else {
       requirements = requirements.filter(requirement => requirement !== value);
     }
-    this.props.changeContent(this.props.index, 'requirements', requirements);
+    this.props.changeContent(requirements, this.props.index, 'requirements');
   }
 
   render() {

src/components/Tutorial/Builder/Step.js

@@ -10,6 +10,7 @@ import StepType from './StepType';
 import BlocklyExample from './BlocklyExample';
 import Requirements from './Requirements';
 import Hardware from './Hardware';
+import Media from './Media';
 
 import { withStyles } from '@material-ui/core/styles';
 import Typography from '@material-ui/core/Typography';
@@ -103,6 +104,9 @@ class Step extends Component {
                 <Hardware value={this.props.step.hardware ? this.props.step.hardware : []} index={index} error={this.props.error.steps[index].hardware}/>
               </div>
             : null}
+            {this.props.step.type === 'instruction' ?
+              <Media value={this.props.step.media} picture={this.props.step.media && this.props.step.media.picture} youtube={this.props.step.media && this.props.step.media.youtube} url={this.props.step.url} index={index} error={this.props.error.steps[index].media} />
+            : null}
             <BlocklyExample value={this.props.step.xml} index={index} task={this.props.step.type === 'task'} error={this.props.error.steps[index].xml ? true : false}/>
           </div>
         </div>

src/components/Tutorial/Builder/StepType.js

@@ -10,7 +10,7 @@ import FormControlLabel from '@material-ui/core/FormControlLabel';
 class StepType extends Component {
 
   onChange = (value) => {
-    this.props.changeContent(this.props.index, 'type', value);
+    this.props.changeContent(value, this.props.index, 'type');
     // delete property 'xml', so that all used blocks are reset
     this.props.deleteProperty(this.props.index, 'xml');
     if(value === 'task'){

src/components/Tutorial/Builder/Textfield.js

@@ -28,7 +28,9 @@ class Textfield extends Component {
 
   componentDidMount(){
     if(this.props.error){
-      this.props.deleteError(this.props.index, this.props.property);
+      if(this.props.property !== 'media'){
+        this.props.deleteError(this.props.index, this.props.property);
+      }
     }
   }
 
@@ -41,7 +43,7 @@ class Textfield extends Component {
       this.props.jsonString(value);
     }
     else {
-      this.props.changeContent(this.props.index, this.props.property, value);
+      this.props.changeContent(value, this.props.index, this.props.property, this.props.property2);
     }
     if(value.replace(/\s/g,'') === ''){
       this.props.setError(this.props.index, this.props.property);

src/components/Tutorial/Instruction.js

@@ -23,6 +23,17 @@ class Instruction extends Component {
           <Hardware picture={step.hardware}/> : null}
         {areRequirements > 0 ?
           <Requirement tutorialIds={step.requirements}/> : null}
+        {step.media ?
+          step.media.picture ?
+            <div style={{display: 'flex', justifyContent: 'center', marginBottom: '5px'}}>
+              <img src={`/media/tutorial/${step.media.picture}`} alt='' style={{maxWidth: '100%'}}/>
+            </div>
+          : step.media.youtube ?
+            <div style={{position: 'relative', paddingBottom: '56.25%', height: 0}}>
+              <iframe title={step.media.youtube} style={{position: 'absolute', top: '0', left: '0', width: '100%', height: '100%'}} src={`https://www.youtube.com/embed/${step.media.youtube}`} frameBorder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />
+            </div>
+          : null
+        : null}
         {step.xml ?
         <Grid container spacing={2} style={{marginBottom: '5px'}}>
           <Grid item xs={12}>

src/data/tutorials.json

@@ -57,14 +57,19 @@
                 "type": "instruction",
                 "headline": "Programmierung",
                 "text": "Man benötigt folgenden Block:",
+                "media": {
+                  "picture": "block_en.svg"
+                },
                 "xml": "<xml xmlns='https://developers.google.com/blockly/xml'><block type='sensebox_wifi' id='-!X.Ay]z1ACt!f5+Vfr8'><field name='SSID'>SSID</field><field name='Password'>Password</field></block></xml>"
             },
             {
                 "id": 3,
                 "type": "instruction",
                 "headline": "Block richtig einbinden",
-                "text": "",
-                "xml": "<xml xmlns='https://developers.google.com/blockly/xml'><block type='arduino_functions' id='QWW|$jB8+*EL;}|#uA' deletable='false' x='27' y='16'><statement name='SETUP_FUNC'><block type='sensebox_wifi' id='W}P2Y^g,muH@]|@anou}'><field name='SSID'>SSID</field><field name='Password'>Password</field></block></statement></block></xml>"
+                "text": "Dies ist ein Test.",
+                "media": {
+                  "youtube": "sf3RzXq6iVo"
+                }
             },
             {
                 "id": 4,