Implement donating, adding a new card, and selecting a card

app/components/donation/card-item.js

@@ -0,0 +1,21 @@
+import Ember from 'ember';
+
+const {
+  Component,
+  computed
+} = Ember;
+
+export default Component.extend({
+  classNames: ['card-item'],
+  classNameBindings: ['isSelected:selected'],
+
+  isSelected: computed('card', 'selectedCard', function() {
+    return this.get('card.id') === this.get('selectedCard.id');
+  }),
+
+  selectedCard: null,
+
+  click() {
+    this.get('select')();
+  }
+});

app/components/donation/card-list.js

@@ -0,0 +1,19 @@
+import Ember from 'ember';
+
+const {
+  Component,
+  computed: { alias, empty }
+} = Ember;
+
+export default Component.extend({
+  classNames: ['card-list'],
+
+  cardNotSelected: empty('selectedCard'),
+  donationDisabled: alias('cardNotSelected'),
+
+  selectedCard: null,
+
+  selectCard(card) {
+    this.set('selectedCard', card);
+  }
+});

app/components/donation/credit-card.js

@@ -2,11 +2,89 @@ import Ember from 'ember';
 
 const {
   Component,
-  computed: { not }
+  computed,
+  computed: { and, not, or },
+  inject: { service }
 } = Ember;
 
 export default Component.extend({
   classNames: ['credit-card-form'],
-  canDonate: true,
-  cannotDonate: not('canDonate')
+  month: '',
+  months: ['01', '02', '03', '04', '05', '06', '07', '08', '09', '10', '11', '12'],
+  year: '',
+  years: [],
+
+  /**
+    @property stripe
+    @type Ember.Service
+   */
+  stripe: service(),
+
+  cardInvalid: not('cardValid'),
+  cardValid: and('isCardNumberValid', 'isCVCValid', 'isExpiryValid'),
+
+  preventSubmit: or('isSubmitting', 'cardInvalid'),
+
+  isSubmitting: false,
+
+  date: computed('month', 'year', function() {
+    let month = this.get('month');
+    let year = this.get('year');
+    return `${month} ${year}`;
+  }),
+
+  isCardNumberValid: computed('cardNumber', function() {
+    let stripe = this.get('stripe');
+    let cardNumber = this.get('cardNumber');
+    return stripe.card.validateCardNumber(cardNumber);
+  }),
+
+  isCVCValid: computed('cvc', function() {
+    let stripe = this.get('stripe');
+    let cvc = this.get('cvc');
+    return stripe.card.validateCVC(cvc);
+  }),
+
+  isExpiryValid: computed('date', function() {
+    let stripe = this.get('stripe');
+    let date = this.get('date');
+    return stripe.card.validateExpiry(date);
+  }),
+
+  init() {
+    let date = new Date();
+    let currentMonth = `0${date.getMonth() + 1}`.slice(-2);
+    this.set('month', currentMonth);
+    let currentYear = date.getFullYear();
+    this.set('year', currentYear);
+    let years = this.generateYears(currentYear);
+    this.set('years', years);
+    this._super(...arguments);
+  },
+
+  generateYears(currentYear) {
+    let years = [];
+    let endYear = currentYear + 20;
+    while (endYear >= currentYear) {
+      years.push(currentYear++);
+    }
+    return years;
+  },
+
+  _afterSubmit() {
+    if (this.get('isDestroyed')) {
+      return;
+    }
+    this.set('isSubmitting', false);
+  },
+
+  actions: {
+    submit() {
+      this.set('isSubmitting', true);
+      let cardAttrs = this.getProperties('cvc', 'cardNumber', 'year', 'month');
+      let onSubmit = this.get('submit');
+
+      onSubmit(cardAttrs).finally(() => this._afterSubmit());
+    }
+  }
 });

app/components/donation/donation-container.js

@@ -2,13 +2,25 @@ import Ember from 'ember';
 
 const {
   Component,
-  computed: { bool }
+  computed,
+  computed: {
+    and, gt, not
+  }
 } = Ember;
 
 export default Component.extend({
+  // canAddCard: true,
   classNames: ['donation-container'],
   donationAmount: 0,
   projectTitle: null,
 
-  canDonate: bool('projectTitle')
+  canAddCard: computed('hasCards', 'isAddingCard', function() {
+    let { hasCards, isAddingCard } = this.getProperties('hasCards', 'isAddingCard');
+    return hasCards ? isAddingCard : true;
+  }),
+  canDonate: and('hasCards', 'isNotAddingCard'),
+  canShowCardList: and('hasCards', 'isNotAddingCard'),
+  hasCards: gt('cards.length', 0),
+  hasNoCards: not('hasCards'),
+  isNotAddingCard: not('isAddingCard')
 });

app/components/donations/create-donation.js

@@ -1,9 +1,14 @@
 import Ember from 'ember';
 
-const { Component } = Ember;
+const { Component, computed, isEmpty } = Ember;
 
 export default Component.extend({
   classNames: ['create-donation'],
   presetAmounts: [10, 15, 25, 50],
-  amount: 15
+  amount: 10,
+
+  selectedAmount: computed('amount', 'customAmount', function() {
+    let { amount, customAmount } = this.getProperties('amount', 'customAmount');
+    return isEmpty(customAmount) ? amount : customAmount;
+  })
 });

app/components/donations/donation-amount-button.js

@@ -1,19 +1,21 @@
 import Ember from 'ember';
 
-const { Component, computed } = Ember;
+const { Component, computed, isEmpty } = Ember;
 
 export default Component.extend({
   classNames: ['preset-amount'],
   classNameBindings: ['presetAmount', 'selected:default:clear'],
   tagName: 'button',
 
-  selected: computed('presetAmount', 'selectedAmount', function() {
-    let { presetAmount, selectedAmount } = this.getProperties('presetAmount', 'selectedAmount');
-    return parseInt(presetAmount) === parseInt(selectedAmount);
+  selected: computed('customAmount', 'presetAmount', 'selectedAmount', function() {
+    let { customAmount, presetAmount, selectedAmount } = this.getProperties('customAmount', 'presetAmount', 'selectedAmount');
+    let amountInPresets = parseInt(presetAmount) === parseInt(selectedAmount);
+    return isEmpty(customAmount) ? amountInPresets : false;
   }),
 
   click() {
+    this.sendAction('setCustomAmount', null);
     let presetAmount = this.get('presetAmount');
-    this.sendAction('action', presetAmount);
+    this.sendAction('setAmount', presetAmount);
   }
 });

app/components/error-formatter.js

@@ -1,6 +1,6 @@
 import Ember from 'ember';
 
-const { Component, computed } = Ember;
+const { Component, computed, Object, String } = Ember;
 
 /**
   `error-formatter' returns a formatted error message. Place within an 'if'
@@ -36,9 +36,85 @@ export default Component.extend({
     @property messages
     @type String
    */
-  messages: computed('error.errors', function() {
-    return (this.get('error.errors') || []).map((e) => {
-      return `${e.title}: ${e.detail}`;
+  messages: computed('error', function() {
+    let errorResponse = Object.create(this.get('error'));
+    let handler = this._findHandler(errorResponse);
+    if (handler) {
+      return handler(errorResponse);
+    }
+  }),
+
+  /**
+   * Determines the type of error from an error response and returns
+   * the correct messsage formatter function for it.
+   *
+   * @param  {Object} errorResponse The error response received from the server
+   * @return {Function}             Function which takes the error response and returns a list of messages
+   */
+  _findHandler(errorResponse) {
+    if (errorResponse.get('isAdapterError')) {
+      return this._findHandlerForAdapterError(errorResponse);
+    } else if (errorResponse.get('error.type') === 'card_error') {
+      return this._stripeCardErrorMessages;
+    }
+  },
+
+  /**
+   * If the error response is determined to be an adapter error, this
+   * function further determines the type of adapter error and returns
+   * the correct message formatter for it.
+   * @param  {Object} errorResponse The adapter error response received from the server
+   * @return {Function}             Function which takes the response and returns a list of messages
+   */
+  _findHandlerForAdapterError(errorResponse) {
+    let payloadContainsValidationErrors = errorResponse.errors.some((error) => error.status === 422);
+
+    if (payloadContainsValidationErrors) {
+      return this._validationErrorMessages;
+    } else {
+      return this._adapterErrorMessages;
+    }
+  },
+
+  /**
+   * Formats messages for a validation error response
+   * In most cases, we do not need this, since we do not render those elements outside
+   * a form. In some cases, however, we are creating a record in the background, so
+   * we are forced to render those errors separate from a form.
+   *
+   * @param  {Object} errorResponse The payload received from the server
+   * @return {Array}                An array of string messages
+   */
+  _validationErrorMessages(errorResponse) {
+    return (errorResponse.get('errors')).map((e) => {
+      let attributePathElements = e.source.pointer.split('/');
+      let unformattedAttributeName = attributePathElements[attributePathElements.length - 1];
+      let attributeName = String.capitalize(unformattedAttributeName);
+      return `${attributeName} ${e.detail}`;
     });
-  })
+  },
+
+  /**
+   * Formats messages for an adapter error response.
+   * An adapter error response contains an array of errors with a
+   * `title` and a `detail` property, but in most cases, that array only contains
+   * one error.
+   * @param  {Object} errorResponse Response received from the server
+   * @return {Array}                Array of message strings
+   */
+  _adapterErrorMessages(errorResponse) {
+    return (errorResponse.get('errors')).map((e) => `${e.title}: ${e.detail}`);
+  },
+
+  /**
+   * Formats messages for a stripe card error response.
+   *
+   * The response contains an `error` object, for which the relevant key is
+   * the `message` property.
+   * @param  {Object} errorResponse Error response received from the stripe service
+   * @return {Array}                An array of string messages, containing single string
+   */
+  _stripeCardErrorMessages(errorResponse) {
+    return [errorResponse.get('error.message')];
+  }
 });