Transform Advanced Templating (#13908)

* updates regex-validator component to optionally show pattern input and adds capture groups support

* adds form-field-label component

* adds autocomplete-input component

* updates kv-object-editor component to yield block for value and glimmerizes

* updates transform template model

* adds transform-advanced-templating component

* updates form-field with child component changes

* updates transform template serializer to handle differences in regex named capture groups

* fixes regex-validator test

* adds changelog entry

* updates for pr review feedback

* reverts kv-object-editor guidFor removal

changelog/13908.txt

@@ -0,0 +1,3 @@
+```release-note:improvement
+ui: Transform advanced templating with encode/decode format support
+```

ui/app/components/kv-object-editor.js

@@ -1,3 +1,11 @@
+import Component from '@glimmer/component';
+import { tracked } from '@glimmer/tracking';
+import { isNone } from '@ember/utils';
+import { assert } from '@ember/debug';
+import { action } from '@ember/object';
+import { guidFor } from '@ember/object/internals';
+import KVObject from 'vault/lib/kv-object';
+
 /**
  * @module KvObjectEditor
  * KvObjectEditor components are called in FormFields when the editType on the model is kv.  They are used to show a key-value input field.
@@ -12,91 +20,59 @@
  * ```
  * @param {string} value - the value is captured from the model.
  * @param {function} onChange - function that captures the value on change
- * @param {function} onKeyUp - function passed in that handles the dom keyup event. Used for validation on the kv custom metadata.
+ * @param {function} [onKeyUp] - function passed in that handles the dom keyup event. Used for validation on the kv custom metadata.
  * @param {string} [label] - label displayed over key value inputs
+ * @param {string} [labelClass] - override default label class in FormFieldLabel component
  * @param {string} [warning] - warning that is displayed
  * @param {string} [helpText] - helper text. In tooltip.
  * @param {string} [subText] - placed under label.
- * @param {boolean} [small-label]- change label size.
+ * @param {string} [keyPlaceholder] - placeholder for key input
- * @param {boolean} [formSection] - if false the component is meant to live outside of a form, like in the customMetadata which is nested already inside a form-section.
+ * @param {string} [valuePlaceholder] - placeholder for value input
  */
 
-import { isNone } from '@ember/utils';
+export default class KvObjectEditor extends Component {
-import { assert } from '@ember/debug';
+  @tracked kvData;
-import Component from '@ember/component';
-import { computed } from '@ember/object';
-import { guidFor } from '@ember/object/internals';
-import KVObject from 'vault/lib/kv-object';
 
-export default Component.extend({
+  constructor() {
-  'data-test-component': 'kv-object-editor',
+    super(...arguments);
-  classNames: ['field'],
+    this.kvData = KVObject.create({ content: [] }).fromJSON(this.args.value);
-  classNameBindings: ['formSection:form-section'],
-  formSection: true,
-  // public API
-  // Ember Object to mutate
-  value: null,
-  label: null,
-  helpText: null,
-  subText: null,
-  // onChange will be called with the changed Value
-  onChange() {},
-
-  init() {
-    this._super(...arguments);
-    const data = KVObject.create({ content: [] }).fromJSON(this.value);
-    this.set('kvData', data);
     this.addRow();
-  },
+  }
 
-  kvData: null,
+  get placeholders() {
-
+    return {
-  kvDataAsJSON: computed('kvData', 'kvData.[]', function () {
+      key: this.args.keyPlaceholder || 'key',
-    return this.kvData.toJSON();
+      value: this.args.valuePlaceholder || 'value',
-  }),
+    };
-
+  }
-  kvDataIsAdvanced: computed('kvData', 'kvData.[]', function () {
+  get hasDuplicateKeys() {
-    return this.kvData.isAdvanced();
+    return this.kvData.uniqBy('name').length !== this.kvData.get('length');
-  }),
+  }
-
-  kvHasDuplicateKeys: computed('kvData', 'kvData.@each.name', function () {
-    let data = this.kvData;
-    return data.uniqBy('name').length !== data.get('length');
-  }),
 
+  @action
   addRow() {
-    let data = this.kvData;
+    if (!isNone(this.kvData.findBy('name', ''))) {
-    let newObj = { name: '', value: '' };
-    if (!isNone(data.findBy('name', ''))) {
       return;
     }
+    const newObj = { name: '', value: '' };
     guidFor(newObj);
-    data.addObject(newObj);
+    this.kvData.addObject(newObj);
-  },
+  }
-  actions: {
+  @action
-    addRow() {
+  updateRow() {
-      this.addRow();
+    this.args.onChange(this.kvData.toJSON());
-    },
+  }
-
+  @action
-    updateRow() {
+  deleteRow(object, index) {
-      let data = this.kvData;
+    const oldObj = this.kvData.objectAt(index);
-      this.onChange(data.toJSON());
+    assert('object guids match', guidFor(oldObj) === guidFor(object));
-    },
+    this.kvData.removeAt(index);
-
+    this.args.onChange(this.kvData.toJSON());
-    deleteRow(object, index) {
+  }
-      let data = this.kvData;
+  @action
-      let oldObj = data.objectAt(index);
+  handleKeyUp(event) {
-
+    if (this.args.onKeyUp) {
-      assert('object guids match', guidFor(oldObj) === guidFor(object));
+      this.args.onKeyUp(event.target.value);
-      data.removeAt(index);
+    }
-      this.onChange(data.toJSON());
+  }
-    },
+}
-
-    handleKeyUp(name, value) {
-      if (!this.onKeyUp) {
-        return;
-      }
-      this.onKeyUp(name, value);
-    },
-  },
-});

ui/app/components/regex-validator.hbs

@@ -1,58 +1,63 @@
-<div class="field">
+{{#if @attr}}
-  <div class="regex-label-wrapper">
+  <div class="field" data-test-regex-validator-pattern>
-    <div class="regex-label">
+    <div class="regex-label-wrapper">
-      <label for={{@attr.name}} class="is-label">
+      <div class="regex-label">
-        {{@labelString}}
+        <label for={{@attr.name}} class="is-label">
-        {{#if @attr.options.helpText}}
+          {{@labelString}}
-          <InfoTooltip>
+          {{#if @attr.options.helpText}}
-            <span data-test-help-text>
+            <InfoTooltip>
-              {{@attr.options.helpText}}
+              <span data-test-help-text>
-            </span>
+                {{@attr.options.helpText}}
-          </InfoTooltip>
+              </span>
-        {{/if}}
+            </InfoTooltip>
-      </label>
-      {{#if @attr.options.subText}}
-        <p class="sub-text">
-          {{@attr.options.subText}}
-          {{#if @attr.options.docLink}}
-            <a href={{@attr.options.docLink}} target="_blank" rel="noopener noreferrer">
-              See our documentation
-            </a>
-            for help.
           {{/if}}
-        </p>
+        </label>
-      {{/if}}
+        {{#if @attr.options.subText}}
-    </div>
+          <p class="sub-text">
-    <div>
+            {{@attr.options.subText}}
-      <Toggle
+            {{#if @attr.options.docLink}}
-        @name={{concat @attr.name "-validation-toggle"}}
+              <a href={{@attr.options.docLink}} target="_blank" rel="noopener noreferrer">
-        @status="success"
+                See our documentation
-        @size="small"
+              </a>
-        @checked={{this.showTestValue}}
+              for help.
-        @onChange={{this.toggleTestValue}}
+            {{/if}}
-      >
+          </p>
-        <span class="has-text-grey">Validation</span>
+        {{/if}}
-      </Toggle>
+      </div>
+      <div>
+        <Toggle
+          @name={{concat @attr.name "-validation-toggle"}}
+          @status="success"
+          @size="small"
+          @checked={{this.showTestValue}}
+          @onChange={{this.toggleTestValue}}
+        >
+          <span class="has-text-grey">Validation</span>
+        </Toggle>
+      </div>
     </div>
+    <input
+      id={{@attr.name}}
+      data-test-input={{@attr.name}}
+      autocomplete="off"
+      spellcheck="false"
+      {{on "change" @onChange}}
+      value={{@value}}
+      class="input"
+    />
   </div>
-  <input
+{{/if}}
-    id={{@attr.name}}
-    data-test-input={{@attr.name}}
-    autocomplete="off"
-    spellcheck="false"
-    {{on "change" @onChange}}
-    value={{@value}}
-    class="input"
-  />
-</div>
 {{#if this.showTestValue}}
   <div data-test-regex-validator-test-string>
-    <label for={{@attr.name}} class="is-label">
+    <label for="regex-test-val" class="is-label">
-      Test string
+      {{this.testInputLabel}}
     </label>
+    {{#if @testInputSubText}}
+      <p class="sub-text">{{@testInputSubText}}</p>
+    {{/if}}
     <input
-      data-test-input={{concat @attr.name "-testval"}}
+      data-test-input="regex-test-val"
-      id={{concat @attr.name "-testval"}}
+      id="regex-test-val"
       autocomplete="off"
       spellcheck="false"
       value={{this.testValue}}
@@ -60,17 +65,50 @@
       class="input {{if this.regexError "has-error"}}"
     />
 
-    {{#if (and this.testValue @value)}}
+    {{#if this.testValue}}
       <div data-test-regex-validation-message>
-        {{#if this.regexError}}
+        {{#if (not @value)}}
-          <AlertInline @type="danger" @message="Your regex doesn't match the subject string" />
+          <AlertInline
+            @type="warning"
+            @message={{concat
+              "A pattern has not been entered. Enter a pattern to check this "
+              (lowercase this.testInputLabel)
+              " against it."
+            }}
+          />
+        {{else if this.regexError}}
+          <AlertInline @type="danger" @message="This test string does not match the pattern regex." />
         {{else}}
           <div class="message-inline">
             <Icon @name="check-circle-fill" class="has-text-success" />
-            <p data-test-inline-success-message>Your regex matches the subject string</p>
+            <p data-test-inline-success-message>
+              This test string matches the pattern regex.
+            </p>
           </div>
         {{/if}}
       </div>
     {{/if}}
   </div>
+{{/if}}
+{{#if @showGroups}}
+  <div class="has-top-margin-l">
+    <label class="is-label">Groups</label>
+    {{! check with design but should likely show a placeholder if testValue is blank }}
+    {{#if (and @value this.testValue (not this.regexError))}}
+      <div class="regex-group">
+        {{#each this.captureGroups as |group|}}
+          <span class="regex-group-position" data-test-regex-group-position={{group.position}}>
+            <span>{{group.position}}</span>
+          </span>
+          <span class="regex-group-value" data-test-regex-group-value={{group.position}}>
+            {{group.value}}
+          </span>
+        {{/each}}
+      </div>
+    {{else}}
+      <p class="sub-text" data-test-regex-validator-groups-placeholder>
+        Enter pattern and test string to show groupings.
+      </p>
+    {{/if}}
+  </div>
 {{/if}}

ui/app/components/regex-validator.js

@@ -15,10 +15,14 @@
  * }
  * <RegexValidator @onChange={action 'myAction'} @attr={attrExample} @labelString="Label String" @value="initial value" />
  * ```
- * @param {func} onChange - the action that should trigger when the main input is changed.
  * @param {string} value - the value of the main input which will be updated in onChange
- * @param {string} labelString - Form label. Anticipated from form-field
+ * @param {func} [onChange] - the action that should trigger when pattern input is changed. Required when attr is provided.
- * @param {object} attr - attribute from model. Anticipated from form-field. Example of attribute shape above
+ * @param {string} [labelString] - Form label. Anticipated from form-field. Required when attr is provided.
+ * @param {object} [attr] - attribute from model. Anticipated from form-field. Example of attribute shape above. When not provided pattern input is hidden
+ * @param {string} [testInputLabel] - label for test input
+ * @param {string} [testInputSubText] - sub text for test input
+ * @param {boolean} [showGroups] - show groupings based on pattern and test input
+ * @param {func} [onValidate] - action triggered every time the test string is validated against the regex -- passes testValue and captureGroups
  */
 
 import Component from '@glimmer/component';
@@ -29,13 +33,42 @@ export default class RegexValidator extends Component {
   @tracked testValue = '';
   @tracked showTestValue = false;
 
+  constructor() {
+    super(...arguments);
+    this.showTestValue = !this.args.attr;
+  }
+
+  get testInputLabel() {
+    return this.args.testInputLabel || 'Test string';
+  }
+  get regex() {
+    return new RegExp(this.args.value, 'g');
+  }
   get regexError() {
     const testString = this.testValue;
     if (!testString || !this.args.value) return false;
-    const regex = new RegExp(this.args.value, 'g');
+    const matchArray = testString.toString().match(this.regex);
-    const matchArray = testString.toString().match(regex);
+    if (this.args.onValidate) {
+      this.args.onValidate(this.testValue, this.captureGroups);
+    }
     return testString !== matchArray?.join('');
   }
+  get captureGroups() {
+    const result = this.regex.exec(this.testValue);
+    if (result) {
+      // first item is full string match but we are only interested in the captured groups
+      const [fullMatch, ...matches] = result; // eslint-disable-line
+      const groups = matches.map((m, index) => ({ position: `$${index + 1}`, value: m }));
+      // push named capture groups into array -> eg (<lastFour>\d{4})
+      if (result.groups) {
+        for (const key in result.groups) {
+          groups.push({ position: `$${key}`, value: result.groups[key] });
+        }
+      }
+      return groups;
+    }
+    return [];
+  }
 
   @action
   updateTestValue(evt) {

ui/app/components/transform-advanced-templating.js

@@ -0,0 +1,37 @@
+import Component from '@glimmer/component';
+import { tracked } from '@glimmer/tracking';
+import { action, set } from '@ember/object';
+
+/**
+ * @module TransformAdvancedTemplating
+ * TransformAdvancedTemplating components are used to modify encode/decode formats of transform templates
+ *
+ * @example
+ * ```js
+ * <TransformAdvancedTemplating @model={{this.model}} />
+ * ```
+ * @param {Object} model - transform template model
+ */
+
+export default class TransformAdvancedTemplating extends Component {
+  @tracked inputOptions = [];
+
+  @action
+  setInputOptions(testValue, captureGroups) {
+    if (captureGroups && captureGroups.length) {
+      this.inputOptions = captureGroups.map(({ position, value }) => {
+        return {
+          label: `${position}: ${value}`,
+          value: position,
+        };
+      });
+    } else {
+      this.inputOptions = [];
+    }
+  }
+  @action
+  decodeFormatValueChange(kvObject, kvData, value) {
+    set(kvObject, 'value', value);
+    this.args.model.decodeFormats = kvData.toJSON();
+  }
+}

ui/app/models/transform/template.js

@@ -31,13 +31,17 @@ const M = Model.extend({
     models: ['transform/alphabet'],
     selectLimit: 1,
   }),
+  encodeFormat: attr('string'),
+  decodeFormats: attr(),
+  backend: attr('string', { readOnly: true }),
 
-  attrs: computed(function () {
+  readAttrs: computed(function () {
-    let keys = ['name', 'pattern', 'alphabet'];
+    let keys = ['name', 'pattern', 'encodeFormat', 'decodeFormats', 'alphabet'];
     return expandAttributeMeta(this, keys);
   }),
-
+  writeAttrs: computed(function () {
-  backend: attr('string', { readOnly: true }),
+    return expandAttributeMeta(this, ['name', 'pattern', 'alphabet']);
+  }),
 });
 
 export default attachCapabilities(M, {

ui/app/serializers/transform/template.js

@@ -6,6 +6,10 @@ export default ApplicationSerializer.extend({
     if (payload.data.alphabet) {
       payload.data.alphabet = [payload.data.alphabet];
     }
+    // strip out P character from any named capture groups
+    if (payload.data.pattern) {
+      this._formatNamedCaptureGroups(payload.data, '?P', '?');
+    }
     return this._super(store, primaryModelClass, payload, id, requestType);
   },
 
@@ -15,9 +19,26 @@ export default ApplicationSerializer.extend({
       // Templates should only ever have one alphabet
       json.alphabet = json.alphabet[0];
     }
+    // add P character to any named capture groups
+    if (json.pattern) {
+      this._formatNamedCaptureGroups(json, '?', '?P');
+    }
     return json;
   },
 
+  _formatNamedCaptureGroups(json, replace, replaceWith) {
+    // named capture groups are handled differently between Go and js
+    // first look for named capture groups in pattern string
+    const regex = new RegExp(/\?P?(<(.+?)>)/, 'g');
+    const namedGroups = json.pattern.match(regex);
+    if (namedGroups) {
+      namedGroups.forEach((group) => {
+        // add or remove P depending on destination
+        json.pattern = json.pattern.replace(group, group.replace(replace, replaceWith));
+      });
+    }
+  },
+
   extractLazyPaginatedData(payload) {
     let ret;
     ret = payload.data.keys.map((key) => {

ui/app/styles/components/regex-validator.scss

@@ -8,3 +8,21 @@
 .regex-toggle {
   flex: 0 1 auto;
 }
+.regex-group {
+  font-family: $family-monospace;
+  font-size: $size-8;
+  color: $ui-gray-600;
+}
+.regex-group-position {
+  background-color: $ui-gray-200;
+  border-radius: 3px;
+  padding-top: 5px;
+  padding-bottom: 4px;
+  margin-right: 4px;
+  span {
+    margin-left: 6px;
+  }
+}
+.regex-group-value {
+  margin-right: $spacing-m;
+}

ui/app/styles/components/transform-edit.scss

@@ -6,3 +6,9 @@
     padding: 14px;
   }
 }
+.transform-pattern-text div:not(:first-child) {
+  font-family: $family-monospace;
+}
+.transform-decode-formats:not(:last-child) {
+  margin-bottom: $spacing-s;
+}

ui/app/styles/core/forms.scss

@@ -329,3 +329,21 @@ fieldset.form-fieldset {
 .has-error-border {
   border: 1px solid $red-500;
 }
+
+.autocomplete-input {
+  background: $white !important;
+  border: 1px solid $grey-light;
+  box-sizing: border-box;
+  border-radius: 3px;
+  width: 99%;
+  padding: 4px 0;
+  margin-left: 0.5%;
+  margin-top: -4px;
+}
+.autocomplete-input-option {
+  padding: 12px;
+  &:hover {
+    background-color: $grey-lightest;
+    cursor: pointer;
+  }
+}

ui/app/styles/core/helpers.scss

@@ -204,3 +204,7 @@ ul.bullet {
 .has-text-semibold {
   font-weight: $font-weight-semibold;
 }
+
+.has-text-grey-400 {
+  color: $ui-gray-400;
+}

ui/app/styles/utils/_colors.scss

@@ -16,12 +16,14 @@ $vault-gray: $vault-gray-500;
 $vault-gray-dark: $vault-gray-700;
 
 // UI Gray
-$ui-gray-010: #FBFBFC;
+$ui-gray-010: #fbfbfc;
-$ui-gray-050: #F7F8FA;
+$ui-gray-050: #f7f8fa;
-$ui-gray-100: #EBEEF2;
+$ui-gray-100: #ebeef2;
-$ui-gray-200: #DCE0E6;
+$ui-gray-200: #dce0e6;
-$ui-gray-300: #BAC1CC;
+$ui-gray-300: #bac1cc;
-$ui-gray-500: #6F7682;
+$ui-gray-400: #8e96a3;
+$ui-gray-500: #6f7682;
+$ui-gray-600: #626873;
 $ui-gray-700: #525761;
 $ui-gray-800: #373a42;
 $ui-gray-900: #1f2124;

ui/app/templates/components/kv-object-editor.hbs

@@ -1,71 +1,69 @@
-{{#if this.label}}
+<div class="field" ...attributes>
-  <label class="title {{if this.small-label "is-5" "is-4"}}" data-test-kv-label="true">
+  <FormFieldLabel
-    {{this.label}}
+    @label={{@label}}
-    {{#if this.helpText}}
+    @helpText={{@helpText}}
-      <InfoTooltip>
+    @subText={{@subText}}
-        {{this.helpText}}
+    class={{@labelClass}}
-      </InfoTooltip>
+    data-test-kv-label={{true}}
-    {{/if}}
-  </label>
-  {{#if this.subText}}
-    <p class="has-padding-bottom">
-      {{this.subText}}
-    </p>
-  {{/if}}
-{{/if}}
-{{#if (get this.validationMessages this.name)}}
-  <div>
-    <AlertInline @type="danger" @message={{get this.validationMessages this.name}} @paddingTop={{true}} />
-  </div>
-{{/if}}
-{{#each this.kvData as |row index|}}
-  <div class="columns is-variable" data-test-kv-row>
-    <div class="column is-one-quarter">
-      <Input
-        data-test-kv-key={{true}}
-        @value={{row.name}}
-        placeholder="key"
-        {{on "change" (action "updateRow" row index)}}
-        class="input"
-      />
-    </div>
-    <div class="column">
-      <Textarea
-        data-test-kv-value={{true}}
-        name={{row.name}}
-        class="input {{if (get this.validationMessages this.name) "has-error-border"}}"
-        {{on "change" (action "updateRow" row index)}}
-        @value={{row.value}}
-        wrap="off"
-        placeholder="value"
-        rows={{1}}
-        onkeyup={{action (action "handleKeyUp" this.name) value="target.value"}}
-      />
-    </div>
-    <div class="column is-narrow">
-      {{#if (eq this.kvData.length (inc index))}}
-        <button type="button" {{action "addRow"}} class="button is-outlined is-primary" data-test-kv-add-row={{true}}>
-          Add
-        </button>
-      {{else}}
-        <button
-          class="button has-text-grey is-expanded is-icon"
-          type="button"
-          {{action "deleteRow" row index}}
-          aria-label="Delete row"
-          data-test-kv-delete-row
-        >
-          <Icon @name="trash" />
-        </button>
-      {{/if}}
-    </div>
-  </div>
-{{/each}}
-{{#if this.kvHasDuplicateKeys}}
-  <AlertBanner
-    @type="warning"
-    @message="More than one key shares the same name. Please be sure to have unique key names or some data may be lost when saving."
-    @class="is-marginless"
-    data-test-duplicate-error-warnings
   />
-{{/if}}
+  {{#if @validationError}}
+    <div>
+      <AlertInline @type="danger" @message={{@validationError}} @paddingTop={{true}} />
+    </div>
+  {{/if}}
+  {{#each this.kvData as |row index|}}
+    <div class="columns is-variable" data-test-kv-row>
+      <div class="column is-one-quarter">
+        <Input
+          data-test-kv-key={{true}}
+          @value={{row.name}}
+          placeholder={{this.placeholders.key}}
+          {{on "change" (fn this.updateRow row index)}}
+          class="input"
+        />
+      </div>
+      <div class="column">
+        {{#if (has-block)}}
+          {{yield row this.kvData}}
+        {{else}}
+          <Textarea
+            data-test-kv-value={{index}}
+            name={{row.name}}
+            class="input {{if @validationError "has-error-border"}}"
+            @value={{row.value}}
+            wrap="off"
+            placeholder={{this.placeholders.value}}
+            rows={{1}}
+            {{on "change" (fn this.updateRow row index)}}
+            {{on "keyup" this.handleKeyUp}}
+          />
+        {{/if}}
+      </div>
+      <div class="column is-narrow">
+        {{#if (eq this.kvData.length (inc index))}}
+          <button type="button" {{action "addRow"}} class="button is-outlined is-primary" data-test-kv-add-row={{true}}>
+            Add
+          </button>
+        {{else}}
+          <button
+            class="button has-text-grey is-expanded is-icon"
+            type="button"
+            {{action "deleteRow" row index}}
+            aria-label="Delete row"
+            data-test-kv-delete-row={{index}}
+          >
+            <Icon @name="trash" />
+          </button>
+        {{/if}}
+      </div>
+    </div>
+  {{/each}}
+  {{#if this.hasDuplicateKeys}}
+    <AlertBanner
+      @type="warning"
+      @message="More than one key shares the same name. Please be sure to have unique key names or some data may be lost when saving."
+      @class="is-marginless"
+      data-test-duplicate-error-warnings
+    />
+  {{/if}}
+</div>

ui/app/templates/components/transform-advanced-templating.hbs

@@ -0,0 +1,62 @@
+<ToggleButton
+  @toggleAttr={{"showForm"}}
+  @toggleTarget={{this}}
+  @openLabel="Advanced templating"
+  @closedLabel="Advanced templating"
+  data-test-toggle-advanced={{true}}
+/>
+
+{{#if this.showForm}}
+  <div class="box has-container is-fullwidth">
+    <h4 class="title is-5">Advanced templating</h4>
+    <p>
+      Using your template's regex as a starting point, you can specify which parts of your input to encode and decode. For
+      example, you may want to handle input formatting or only decode part of an input. For more information, see
+      <a
+        href="https://learn.hashicorp.com/tutorials/vault/transform#advanced-handling"
+        target="_blank"
+        rel="noopener noreferrer"
+      >
+        our documentation.
+      </a>
+    </p>
+    <div class="has-top-margin-l">
+      <RegexValidator
+        @value={{@model.pattern}}
+        @testInputLabel="Sample input"
+        @testInputSubText="Enter a sample input to match against your regex and identify capture groups. Optional."
+        @showGroups={{true}}
+        @onValidate={{this.setInputOptions}}
+      />
+    </div>
+    <AutocompleteInput
+      @label="Encode format"
+      @subText="Use the groups above to define how the input will be encoded. Refer to each group with $N. This is optional; if not specified, pattern will be used."
+      @value={{@model.encodeFormat}}
+      @optionsTrigger="$"
+      @options={{this.inputOptions}}
+      @onChange={{fn (mut @model.encodeFormat)}}
+      class="has-top-margin-l"
+      data-test-encode-format
+    />
+    <KvObjectEditor
+      @value={{@model.decodeFormats}}
+      @onChange={{fn (mut @model.decodeFormats)}}
+      @label="Decode formats"
+      @subText="Using the groups above, define how this data will be decoded. Multiple decode_formats can be used. Optional. If not specified, pattern will be used."
+      @keyPlaceholder="name"
+      class="has-top-margin-l"
+      data-test-kv-object-editor
+      as |kvObject kvData|
+    >
+      <AutocompleteInput
+        @value={{kvObject.value}}
+        @placeholder="format"
+        @optionsTrigger="$"
+        @options={{this.inputOptions}}
+        @onChange={{fn this.decodeFormatValueChange kvObject kvData}}
+        data-test-decode-format
+      />
+    </KvObjectEditor>
+  </div>
+{{/if}}

ui/app/templates/components/transform-template-edit.hbs

@@ -50,7 +50,7 @@
     <div class="box is-sideless is-fullwidth is-marginless">
       <MessageError @model={{this.model}} />
       <NamespaceReminder @mode={{this.mode}} @noun="transform template" />
-      {{#each this.model.attrs as |attr|}}
+      {{#each this.model.writeAttrs as |attr|}}
         {{#if (and (eq attr.name "name") (eq this.mode "edit"))}}
           <label for={{attr.name}} class="is-label">
             {{attr.options.label}}
@@ -69,6 +69,9 @@
             type={{attr.type}}
           />
         {{else}}
+          {{#if (eq attr.name "alphabet")}}
+            <TransformAdvancedTemplating @model={{this.model}} />
+          {{/if}}
           <FormField data-test-field @attr={{attr}} @model={{this.model}} />
         {{/if}}
       {{/each}}
@@ -104,25 +107,29 @@
     </div>
   {{/if}}
   <div class="box is-fullwidth is-sideless is-paddingless is-marginless">
-    {{#each this.model.attrs as |attr|}}
+    {{#each this.model.readAttrs as |attr|}}
-      {{#if (eq attr.type "object")}}
+      {{#let (capitalize (or attr.options.label (humanize (dasherize attr.name)))) as |label|}}
-        <InfoTableRow
+        {{#if (eq attr.name "decodeFormats")}}
-          @label={{capitalize (or attr.options.label (humanize (dasherize attr.name)))}}
+          {{#if (not (is-empty-value this.model.decodeFormats))}}
-          @value={{stringify (get this.model attr.name)}}
+            <InfoTableRow @label={{label}}>
-        />
+              <div>
-      {{else if (eq attr.type "array")}}
+                {{#each-in this.model.decodeFormats as |key value|}}
-        <InfoTableRow
+                  <div class="transform-decode-formats">
-          @label={{capitalize (or attr.options.label (humanize (dasherize attr.name)))}}
+                    <p class="is-label has-text-grey-400">{{key}}</p>
-          @value={{get this.model attr.name}}
+                    <p>{{value}}</p>
-          @type={{attr.type}}
+                  </div>
-          @viewAll={{attr.name}}
+                {{/each-in}}
-        />
+              </div>
-      {{else}}
+            </InfoTableRow>
-        <InfoTableRow
+          {{/if}}
-          @label={{capitalize (or attr.options.label (humanize (dasherize attr.name)))}}
+        {{else}}
-          @value={{get this.model attr.name}}
+          <InfoTableRow
-        />
+            @label={{label}}
-      {{/if}}
+            @value={{get this.model attr.name}}
+            class={{if (eq attr.name "pattern") "transform-pattern-text"}}
+          />
+        {{/if}}
+      {{/let}}
     {{/each}}
   </div>
 {{/if}}

ui/lib/core/addon/components/autocomplete-input.hbs

@@ -0,0 +1,24 @@
+<div {{did-insert this.setElement}} ...attributes>
+  {{#if @label}}
+    <FormFieldLabel @label={{@label}} @subText={{@subText}} />
+  {{/if}}
+  <div class="control">
+    <Input
+      @value={{@value}}
+      autocomplete="off"
+      spellcheck="false"
+      placeholder={{@placeholder}}
+      class="input"
+      {{on "input" this.onInput}}
+    />
+    <BasicDropdown @registerAPI={{fn (mut this.dropdownAPI)}} @renderInPlace={{true}} as |D|>
+      <D.Content class="autocomplete-input">
+        {{#each @options as |option|}}
+          <div class="autocomplete-input-option" role="button" {{on "click" (fn this.selectOption option.value)}}>
+            {{option.label}}
+          </div>
+        {{/each}}
+      </D.Content>
+    </BasicDropdown>
+  </div>
+</div>

ui/lib/core/addon/components/autocomplete-input.js

@@ -0,0 +1,48 @@
+import Component from '@glimmer/component';
+import { action } from '@ember/object';
+
+/**
+ * @module AutocompleteInput
+ * AutocompleteInput components are used as standard string inputs or optionally select options to append to input value
+ *
+ * @example
+ * ```js
+ * <AutocompleteInput @requiredParam={requiredParam} @optionalParam={optionalParam} @param1={{param1}}/>
+ * ```
+ * @callback inputChangeCallback
+ * @param {string} value - input value
+ * @param {inputChangeCallback} onChange - fires when input value changes to mutate value param by caller
+ * @param {string} [optionsTrigger] - display options dropdown when trigger character is input
+ * @param {Object[]} [options] - array of { label, value } objects where label is displayed in options dropdown and value is appended to input value
+ * @param {string} [label] - label to display above input
+ * @param {string} [subText] - text to display below label
+ * @param {string} [placeholder] - input placeholder
+ */
+
+export default class AutocompleteInput extends Component {
+  dropdownAPI;
+  inputElement;
+
+  @action
+  setElement(element) {
+    this.inputElement = element.querySelector('.input');
+  }
+  @action
+  onInput(event) {
+    const { options = [], optionsTrigger } = this.args;
+    if (optionsTrigger && options.length) {
+      const method = event.data === optionsTrigger ? 'open' : 'close';
+      this.dropdownAPI.actions[method]();
+    }
+    this.args.onChange(event.target.value);
+  }
+  @action
+  selectOption(value) {
+    // if trigger character is at start of value it needs to be trimmed
+    const appendValue = value.startsWith(this.args.optionsTrigger) ? value.slice(1) : value;
+    const newValue = this.args.value + appendValue;
+    this.args.onChange(newValue);
+    this.dropdownAPI.actions.close();
+    this.inputElement.focus();
+  }
+}

ui/lib/core/addon/components/form-field-label.hbs

@@ -0,0 +1,21 @@
+{{#if @label}}
+  <label class="is-label" ...attributes>
+    {{@label}}
+    {{#if @helpText}}
+      <InfoTooltip>
+        <span data-test-help-text>{{@helpText}}</span>
+      </InfoTooltip>
+    {{/if}}
+  </label>
+{{/if}}
+{{#if @subText}}
+  <p class="sub-text" data-test-label-subtext>
+    {{@subText}}
+    {{#if @docLink}}
+      <a href={{@docLink}} target="_blank" rel="noopener noreferrer">
+        See our documentation
+      </a>
+      for help.
+    {{/if}}
+  </p>
+{{/if}}

ui/lib/core/addon/components/form-field-label.js

@@ -0,0 +1,17 @@
+import templateOnly from '@ember/component/template-only';
+
+/**
+ * @module FormFieldLabel
+ * FormFieldLabel components add labels and descriptions to inputs
+ *
+ * @example
+ * ```js
+ * <FormFieldLabel for="input-name" @label={{this.label}} @helpText={{this.helpText}} @subText={{this.subText}} @dockLink={{this.docLink}} />
+ * ```
+ * @param {string} [label] - label text -- component attributes are spread on label element
+ * @param {string} [helpText] - adds a tooltip
+ * @param {string} [subText] - de-emphasized text rendered below the label
+ * @param {string} [docLink] - url to documentation rendered after the subText
+ */
+
+export default templateOnly();

ui/lib/core/addon/templates/components/form-field.hbs

@@ -9,27 +9,13 @@
   )
 }}
   {{#unless (eq this.attr.type "object")}}
-    <label for={{this.attr.name}} class="is-label">
+    <FormFieldLabel
-      {{this.labelString}}
+      for={{this.attr.name}}
-      {{#if this.attr.options.helpText}}
+      @label={{this.labelString}}
-        <InfoTooltip>
+      @helpText={{this.attr.options.helpText}}
-          <span data-test-help-text>
+      @subText={{this.attr.options.subText}}
-            {{this.attr.options.helpText}}
+      @docLink={{this.attr.options.docLink}}
-          </span>
+    />
-        </InfoTooltip>
-      {{/if}}
-    </label>
-    {{#if this.attr.options.subText}}
-      <p class="sub-text">
-        {{this.attr.options.subText}}
-        {{#if this.attr.options.docLink}}
-          <a href={{this.attr.options.docLink}} target="_blank" rel="noopener noreferrer">
-            See our documentation
-          </a>
-          for help.
-        {{/if}}
-      </p>
-    {{/if}}
   {{/unless}}
 {{/unless}}
 {{#if this.attr.options.possibleValues}}
@@ -108,14 +94,12 @@
     @value={{get this.model this.valuePath}}
     @onChange={{action "setAndBroadcast" this.valuePath}}
     @label={{this.labelString}}
-    @warning={{this.attr.options.warning}}
+    @labelClass="title {{if (eq this.mode "create") "is-5" "is-4"}}"
     @helpText={{this.attr.options.helpText}}
     @subText={{this.attr.options.subText}}
-    @small-label={{if (eq this.mode "create") true false}}
+    @onKeyUp={{action "handleKeyUp" this.valuePath}}
-    @formSection={{if (eq this.mode "customMetadata") false true}}
+    @validationError={{get this.validationMessages this.valuePath}}
-    @name={{this.valuePath}}
+    class={{if (not-eq this.mode "customMetadata") "form-section"}}
-    @onKeyUp={{this.onKeyUp}}
-    @validationMessages={{this.validationMessages}}
   />
 {{else if (eq this.attr.options.editType "file")}}
   {{! File Input }}

ui/lib/core/app/components/autocomplete-input.js

@@ -0,0 +1 @@
+export { default } from 'core/components/autocomplete-input';

ui/lib/core/app/components/form-field-label.js

@@ -0,0 +1 @@
+export { default } from 'core/components/form-field-label';

ui/tests/integration/components/autocomplete-input-test.js

@@ -0,0 +1,86 @@
+import { module, test } from 'qunit';
+import { setupRenderingTest } from 'ember-qunit';
+import { click, fillIn, triggerEvent, typeIn, render } from '@ember/test-helpers';
+import { hbs } from 'ember-cli-htmlbars';
+
+module('Integration | Component | autocomplete-input', function (hooks) {
+  setupRenderingTest(hooks);
+
+  test('it should render label', async function (assert) {
+    await render(
+      hbs`
+      <AutocompleteInput
+        @label={{this.label}}
+        @subText={{this.subText}}
+      />`
+    );
+
+    assert.dom('label').doesNotExist('Label is hidden when not provided');
+    this.setProperties({
+      label: 'Some label',
+      subText: 'Some description',
+    });
+    assert.dom('label').hasText('Some label', 'Label renders');
+    assert.dom('[data-test-label-subtext]').hasText('Some description', 'Sub text renders');
+  });
+
+  test('it should function as standard input', async function (assert) {
+    const changeValue = 'foo bar';
+    this.value = 'test';
+    this.placeholder = 'text goes here';
+    this.onChange = (value) => assert.equal(value, changeValue, 'Value sent in onChange callback');
+
+    await render(
+      hbs`
+      <AutocompleteInput
+        @value={{this.value}}
+        @placeholder={{this.placeholder}}
+        @onChange={{this.onChange}}
+      />`
+    );
+
+    assert.dom('input').hasAttribute('placeholder', this.placeholder, 'Input placeholder renders');
+    assert.dom('input').hasValue(this.value, 'Initial input value renders');
+    await fillIn('input', changeValue);
+  });
+
+  test('it should trigger dropdown', async function (assert) {
+    await render(
+      hbs`
+      <AutocompleteInput
+        @value={{this.value}}
+        @optionsTrigger="$"
+        @options={{this.options}}
+        @onChange={{fn (mut this.value)}}
+      />`
+    );
+
+    await typeIn('input', '$');
+    await triggerEvent('input', 'input', { data: '$' }); // simulate InputEvent for data prop with character pressed
+    assert.dom('.autocomplete-input-option').doesNotExist('Trigger does not open dropdown with no options');
+
+    this.set('options', [
+      { label: 'Foo', value: '$foo' },
+      { label: 'Bar', value: 'bar' },
+    ]);
+    await triggerEvent('input', 'input', { data: '$' });
+    const options = this.element.querySelectorAll('.autocomplete-input-option');
+    options.forEach((o, index) => {
+      assert.dom(o).hasText(this.options[index].label, 'Label renders for option');
+    });
+
+    await click(options[0]);
+    assert.dom('input').isFocused('Focus is returned to input after selecting option');
+    assert
+      .dom('input')
+      .hasValue('$foo', 'Value is updated correctly. Trigger character is not prepended to value.');
+
+    await typeIn('input', '-$');
+    await triggerEvent('input', 'input', { data: '$' });
+    await click('.autocomplete-input-option:last-child');
+    assert
+      .dom('input')
+      .hasValue('$foo-$bar', 'Value is updated correctly. Trigger character is prepended to option.');
+    assert.equal(this.value, '$foo-$bar', 'Value prop is updated correctly onChange');
+  });
+});

ui/tests/integration/components/form-field-label-test.js

@@ -0,0 +1,44 @@
+import { module, test } from 'qunit';
+import { setupRenderingTest } from 'ember-qunit';
+import { render } from '@ember/test-helpers';
+import { hbs } from 'ember-cli-htmlbars';
+import { click } from '@ember/test-helpers';
+
+module('Integration | Component | form-field-label', function (hooks) {
+  setupRenderingTest(hooks);
+
+  test('it renders', async function (assert) {
+    this.setProperties({
+      label: 'Test Label',
+      helpText: null,
+      subText: null,
+      docLink: null,
+    });
+
+    await render(hbs`
+      <FormFieldLabel
+        @label={{this.label}}
+        @helpText={{this.helpText}}
+        @subText={{this.subText}}
+        @docLink={{this.docLink}}
+        for="some-input"
+      />
+    `);
+
+    assert.dom('label').hasAttribute('for', 'some-input', 'Attributes passed to label element');
+    assert.dom('label').hasText(this.label, 'Label text renders');
+    assert.dom('[data-test-help-text]').doesNotExist('Help text hidden when not provided');
+    assert.dom('.sub-text').doesNotExist('Sub text hidden when not provided');
+    this.setProperties({
+      helpText: 'More info',
+      subText: 'Some description',
+    });
+    await click('[data-test-tool-tip-trigger]');
+    assert.dom('[data-test-help-text]').hasText(this.helpText, 'Help text renders in tooltip');
+    assert.dom('.sub-text').hasText(this.subText, 'Sub text renders');
+    assert.dom('a').doesNotExist('docLink hidden when not provided');
+    this.set('docLink', 'foo.com/bar');
+    assert.dom('.sub-text').includesText('See our documentation for help', 'Doc link text renders');
+    assert.dom('a').hasAttribute('href', this.docLink, 'Doc link renders');
+  });
+});

ui/tests/integration/components/kv-object-editor-test.js

@@ -9,26 +9,26 @@ import kvObjectEditor from '../../pages/components/kv-object-editor';
 import sinon from 'sinon';
 const component = create(kvObjectEditor);
 
-module('Integration | Component | kv object editor', function (hooks) {
+module('Integration | Component | kv-object-editor', function (hooks) {
   setupRenderingTest(hooks);
 
+  hooks.beforeEach(function () {
+    this.spy = sinon.spy();
+  });
+
   test('it renders with no initial value', async function (assert) {
-    let spy = sinon.spy();
+    await render(hbs`{{kv-object-editor onChange=this.spy}}`);
-    this.set('onChange', spy);
-    await render(hbs`{{kv-object-editor onChange=onChange}}`);
     assert.equal(component.rows.length, 1, 'renders a single row');
     await component.addRow();
     assert.equal(component.rows.length, 1, 'will only render row with a blank key');
   });
 
   test('it calls onChange when the val changes', async function (assert) {
-    let spy = sinon.spy();
+    await render(hbs`{{kv-object-editor onChange=this.spy}}`);
-    this.set('onChange', spy);
-    await render(hbs`{{kv-object-editor onChange=onChange}}`);
     await component.rows.objectAt(0).kvKey('foo').kvVal('bar');
-    assert.equal(spy.callCount, 2, 'calls onChange each time change is triggered');
+    assert.equal(this.spy.callCount, 2, 'calls onChange each time change is triggered');
     assert.deepEqual(
-      spy.lastCall.args[0],
+      this.spy.lastCall.args[0],
       { foo: 'bar' },
       'calls onChange with the JSON respresentation of the data'
     );
@@ -48,26 +48,42 @@ module('Integration | Component | kv object editor', function (hooks) {
   });
 
   test('it deletes a row', async function (assert) {
-    let spy = sinon.spy();
+    await render(hbs`{{kv-object-editor onChange=this.spy}}`);
-    this.set('onChange', spy);
-    await render(hbs`{{kv-object-editor onChange=onChange}}`);
     await component.rows.objectAt(0).kvKey('foo').kvVal('bar');
     await component.addRow();
     assert.equal(component.rows.length, 2);
-    assert.equal(spy.callCount, 2, 'calls onChange for editing');
+    assert.equal(this.spy.callCount, 2, 'calls onChange for editing');
     await component.rows.objectAt(0).deleteRow();
 
     assert.equal(component.rows.length, 1, 'only the blank row left');
-    assert.equal(spy.callCount, 3, 'calls onChange deleting row');
+    assert.equal(this.spy.callCount, 3, 'calls onChange deleting row');
-    assert.deepEqual(spy.lastCall.args[0], {}, 'last call to onChange is an empty object');
+    assert.deepEqual(this.spy.lastCall.args[0], {}, 'last call to onChange is an empty object');
   });
 
   test('it shows a warning if there are duplicate keys', async function (assert) {
     let metadata = { foo: 'bar', baz: 'bop' };
     this.set('value', metadata);
-    await render(hbs`{{kv-object-editor value=value}}`);
+    await render(hbs`{{kv-object-editor value=value onChange=this.spy}}`);
     await component.rows.objectAt(0).kvKey('foo');
 
     assert.ok(component.showsDuplicateError, 'duplicate keys are allowed but an error message is shown');
   });
+
+  test('it supports custom placeholders', async function (assert) {
+    await render(hbs`<KvObjectEditor @keyPlaceholder="foo" @valuePlaceholder="bar" />`);
+    assert.dom('input').hasAttribute('placeholder', 'foo', 'Placeholder applied to key input');
+    assert.dom('textarea').hasAttribute('placeholder', 'bar', 'Placeholder applied to value input');
+  });
+
+  test('it yields block in place of value input', async function (assert) {
+    await render(
+      hbs`
+        <KvObjectEditor>
+          <span data-test-yield></span>
+        </KvObjectEditor>
+      `
+    );
+    assert.dom('textarea').doesNotExist('Value input hidden when block is provided');
+    assert.dom('[data-test-yield]').exists('Component yields block');
+  });
 });

ui/tests/integration/components/regex-validator-test.js

@@ -2,7 +2,7 @@ import EmberObject from '@ember/object';
 import sinon from 'sinon';
 import { module, test } from 'qunit';
 import { setupRenderingTest } from 'ember-qunit';
-import { render, click, fillIn } from '@ember/test-helpers';
+import { render, click, fillIn, settled } from '@ember/test-helpers';
 import { hbs } from 'ember-cli-htmlbars';
 
 module('Integration | Component | regex-validator', function (hooks) {
@@ -32,29 +32,108 @@ module('Integration | Component | regex-validator', function (hooks) {
 
     await click('[data-test-toggle-input="example-validation-toggle"]');
     assert.dom('[data-test-regex-validator-test-string]').exists('Test string input shows after toggle');
+    assert
+      .dom('[data-test-regex-validator-test-string] label')
+      .hasText('Test string', 'Test input label renders');
+    assert
+      .dom('[data-test-regex-validator-test-string] .sub-text')
+      .doesNotExist('Test input sub text is hidden when not provided');
     assert
       .dom('[data-test-regex-validation-message]')
       .doesNotExist('Validation message does not show if test string is empty');
 
-    await fillIn('[data-test-input="example-testval"]', '123a');
+    await fillIn('[data-test-input="regex-test-val"]', '123a');
     assert.dom('[data-test-regex-validation-message]').exists('Validation message shows after input filled');
     assert
       .dom('[data-test-inline-error-message]')
-      .hasText("Your regex doesn't match the subject string", 'Shows error when regex does not match string');
+      .hasText(
+        'This test string does not match the pattern regex.',
+        'Shows error when regex does not match string'
+      );
 
-    await fillIn('[data-test-input="example-testval"]', '1234');
+    await fillIn('[data-test-input="regex-test-val"]', '1234');
     assert
       .dom('[data-test-inline-success-message]')
-      .hasText('Your regex matches the subject string', 'Shows success when regex matches');
+      .hasText('This test string matches the pattern regex.', 'Shows success when regex matches');
 
-    await fillIn('[data-test-input="example-testval"]', '12345');
+    await fillIn('[data-test-input="regex-test-val"]', '12345');
     assert
       .dom('[data-test-inline-error-message]')
       .hasText(
-        "Your regex doesn't match the subject string",
+        'This test string does not match the pattern regex.',
         "Shows error if regex doesn't match complete string"
       );
     await fillIn('[data-test-input="example"]', '(\\d{5})');
     assert.ok(spy.calledOnce, 'Calls the passed onChange function when main input is changed');
   });
+
+  test('it renders test input only when attr is not provided', async function (assert) {
+    this.setProperties({
+      value: null,
+      label: 'Sample input',
+      subText: 'Some text to further describe the input',
+    });
+
+    await render(hbs`
+      <RegexValidator
+        @value={{this.value}}
+        @testInputLabel={{this.label}}
+        @testInputSubText={{this.subText}}
+      />`);
+
+    assert
+      .dom('[data-test-regex-validator-pattern]')
+      .doesNotExist('Pattern input is hidden when attr is not provided');
+    assert
+      .dom('[data-test-regex-validator-test-string] label')
+      .hasText(this.label, 'Test input label renders');
+    assert
+      .dom('[data-test-regex-validator-test-string] .sub-text')
+      .hasText(this.subText, 'Test input sub text renders');
+
+    await fillIn('[data-test-input="regex-test-val"]', 'test');
+    assert
+      .dom('[data-test-inline-error-message]')
+      .hasText(
+        'A pattern has not been entered. Enter a pattern to check this sample input against it.',
+        'Warning renders when test input has value but not regex exists'
+      );
+
+    this.set('value', 'test');
+    assert
+      .dom('[data-test-inline-success-message]')
+      .hasText('This test string matches the pattern regex.', 'Shows success when regex matches');
+
+    this.set('value', 'foo');
+    await settled();
+    assert
+      .dom('[data-test-inline-error-message]')
+      .hasText(
+        'This test string does not match the pattern regex.',
+        'Pattern is validated on external value change'
+      );
+  });
+
+  test('it renders capture groups', async function (assert) {
+    this.set('value', '(test)(?<last>\\d?)');
+
+    await render(hbs`
+      <RegexValidator
+        @value={{this.value}}
+        @showGroups={{true}}
+      />`);
+    await fillIn('[data-test-input="regex-test-val"]', 'foobar');
+    assert
+      .dom('[data-test-regex-validator-groups-placeholder]')
+      .exists('Placeholder is shown when regex does not match test input value');
+    await fillIn('[data-test-input="regex-test-val"]', 'test8');
+    assert.dom('[data-test-regex-group-position="$1"]').hasText('$1', 'First capture group position renders');
+    assert.dom('[data-test-regex-group-value="$1"]').hasText('test', 'First capture group value renders');
+    assert
+      .dom('[data-test-regex-group-position="$2"]')
+      .hasText('$2', 'Second capture group position renders');
+    assert.dom('[data-test-regex-group-value="$2"]').hasText('8', 'Second capture group value renders');
+    assert.dom('[data-test-regex-group-position="$last"]').hasText('$last', 'Named capture group renders');
+    assert.dom('[data-test-regex-group-value="$last"]').hasText('8', 'Named capture group value renders');
+  });
 });

ui/tests/integration/components/transform-advanced-templating-test.js

@@ -0,0 +1,42 @@
+import { module, test } from 'qunit';
+import { setupRenderingTest } from 'ember-qunit';
+import { click, fillIn, render, triggerEvent } from '@ember/test-helpers';
+import { hbs } from 'ember-cli-htmlbars';
+
+module('Integration | Component | transform-advanced-templating', function (hooks) {
+  setupRenderingTest(hooks);
+
+  test('it should render', async function (assert) {
+    this.model = {
+      pattern: '(\\d{3})-(\\d{2})-(?<last>\\d{5})',
+      encodeFormat: null,
+      decodeFormats: {},
+    };
+    await render(hbs`<TransformAdvancedTemplating @model={{this.model}} />`);
+
+    assert.dom('.box').doesNotExist('Form is hidden when not toggled');
+    await click('[data-test-toggle-advanced]');
+    await fillIn('[data-test-input="regex-test-val"]', '123-45-67890');
+    [
+      ['$1', '123'],
+      ['$2', '45'],
+      ['$3', '67890'],
+      ['$last', '67890'],
+    ].forEach(([p, v]) => {
+      assert.dom(`[data-test-regex-group-position="${p}"]`).hasText(`${p}`, `Capture group ${p} renders`);
+      assert.dom(`[data-test-regex-group-value="${p}"]`).hasText(v, `Capture group value ${v} renders`);
+    });
+    // need to simulate InputEvent
+    await triggerEvent('[data-test-encode-format] input', 'input', { data: '$' });
+    const options = this.element.querySelectorAll('.autocomplete-input-option');
+    ['$1: 123', '$2: 45', '$3: 67890', '$last: 67890'].forEach((val, index) => {
+      assert.dom(options[index]).hasText(val, 'Autocomplete option renders');
+    });
+
+    assert.dom('[data-test-kv-object-editor]').exists('KvObjectEditor renders for decode formats');
+    assert.dom('[data-test-decode-format]').exists('AutocompleteInput renders for decode format value');
+    await fillIn('[data-test-kv-key]', 'last');
+    await fillIn('[data-test-decode-format] input', '$last');
+    assert.deepEqual(this.model.decodeFormats, { last: '$last' }, 'Decode formats updates correctly');
+  });
+});