FEATURE: Allow one-time purchases on products (#18)

Building off the foundation of using the Prices API, this PR adds the ability to create a one-time purchase plan for any product, which then can add a user to the specified plan group.

Some things to be aware of:

    One-time purchases cannot have trials.
    One-time purchases use the Invoice API instead of Subscriptions. Invoices are created then charged immediately.
    Users should receive emails for these invoices directly from Stripe just like subscriptions.

assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show-plans-show.hbs

@@ -40,30 +40,47 @@
     {{input class="plan-amount" type="text" name="name" value=model.plan.amountDollars disabled=planFieldDisabled}}
   </p>
   <p>
-    <label for="trial">
-      {{i18n 'discourse_subscriptions.admin.plans.plan.trial'}}
-      ({{i18n 'discourse_subscriptions.optional'}})
-    </label>
-    {{input type="text" name="trial" value=model.plan.trial_period_days}}
-    <div class="control-instructions">
-      {{i18n 'discourse_subscriptions.admin.plans.plan.trial_help'}}
-    </div>
-  </p>
-  <p>
-    <label for="interval">
-      {{i18n 'discourse_subscriptions.admin.plans.plan.interval'}}
+    <label for="recurring">
+      {{i18n 'discourse_subscriptions.admin.plans.plan.recurring'}}
     </label>
     {{#if planFieldDisabled}}
-      {{input disabled=true value=selectedInterval}}
+      {{input disabled=true value=model.plan.isRecurring}}
     {{else}}
-      {{combo-box 
-        valueProperty="name"
-        content=availableIntervals 
-        value=selectedInterval 
-        onChange=(action (mut selectedInterval))
+      {{input 
+        type="checkbox" 
+        name="recurring" 
+        checked=model.plan.isRecurring
+        change=(action 'changeRecurring')
       }}
     {{/if}}
   </p>
+  {{#if model.plan.isRecurring}}
+    <p>
+      <label for="interval">
+        {{i18n 'discourse_subscriptions.admin.plans.plan.interval'}}
+      </label>
+      {{#if planFieldDisabled}}
+        {{input disabled=true value=selectedInterval}}
+      {{else}}
+        {{combo-box 
+          valueProperty="name"
+          content=availableIntervals 
+          value=selectedInterval 
+          onChange=(action (mut selectedInterval))
+        }}
+      {{/if}}
+    </p>
+    <p>
+      <label for="trial">
+        {{i18n 'discourse_subscriptions.admin.plans.plan.trial'}}
+        ({{i18n 'discourse_subscriptions.optional'}})
+      </label>
+      {{input type="text" name="trial" value=model.plan.trial_period_days}}
+      <div class="control-instructions">
+        {{i18n 'discourse_subscriptions.admin.plans.plan.trial_help'}}
+      </div>
+    </p>
+  {{/if}}
   <p>
     <label for="active">
       {{i18n 'discourse_subscriptions.admin.plans.plan.active'}}

assets/javascripts/discourse/templates/admin/plugins-discourse-subscriptions-products-show.hbs

@@ -53,7 +53,7 @@
       {{#each model.plans as |plan|}}
         <tr>
           <td>{{plan.nickname}}</td>
-          <td>{{plan.interval}}</td>
+          <td>{{plan.recurring.interval}}</td>
           <td>{{format-unix-date plan.created}}</td>
           <td>{{plan.metadata.group_name}}</td>
           <td>{{plan.active}}</td>

assets/javascripts/discourse/templates/components/payment-options.hbs

@@ -1,54 +1,9 @@
-
-{{#if paymentsAllowed}}
-  <div class="subscribe-buttons">
-    {{#ds-button
-      id="discourse-subscriptions-payment-type-plan"
-      selected=planButtonSelected
-      action="selectPlans"
-      class="btn-discourse-subscriptions-payment-type"
-    }}
-      {{i18n "discourse_subscriptions.plans.purchase"}}
-    {{/ds-button}}
-
-    {{#ds-button
-      id="discourse-subscriptions-payment-type-payment"
-      selected=paymentButtonSelected
-      action="selectPayments"
-      class="btn-discourse-subscriptions-payment-type"
-    }}
-      {{i18n "discourse_subscriptions.payment.purchase"}}
-    {{/ds-button}}
-  </div>
-{{/if}}
-
-<hr>
-
 <p>
-  {{#if planTypeIsSelected}}
-    {{i18n "discourse_subscriptions.plans.select"}}
-  {{else}}
-    {{i18n "discourse_subscriptions.payment.select"}}
-  {{/if}}
+  {{i18n "discourse_subscriptions.plans.select"}}
 </p>
 
 <div class="subscribe-buttons">
   {{#each plans as |plan|}}
-    {{#ds-button
-      action="clickPlan"
-      actionParam=plan
-      selected=plan.selected
-      class="btn-discourse-subscriptions-subscribe"
-    }}
-      <div class="interval">
-        {{#if planTypeIsSelected}}
-          {{i18n (concat "discourse_subscriptions.plans.interval.adverb." plan.recurring.interval)}}
-        {{else}}
-          {{i18n "discourse_subscriptions.payment.interval"}}
-        {{/if}}
-      </div>
-      <span class="amount">
-        {{format-currency plan.currency plan.amountDollars}}
-      </span>
-    {{/ds-button}}
+    {{payment-plan plan=plan selectedPlan=selectedPlan clickPlan=(action "clickPlan")}}
   {{/each}}
 </div>

assets/javascripts/discourse/templates/components/payment-plan.hbs

@@ -0,0 +1,16 @@
+{{#ds-button
+  action="planClick"
+  selected=selected
+  class="btn-discourse-subscriptions-subscribe"
+}}
+  <div class="interval">
+    {{#if recurringPlan}}
+      {{i18n (concat "discourse_subscriptions.plans.interval.adverb." plan.recurring.interval)}}
+    {{else}}
+      {{i18n "discourse_subscriptions.one_time_payment"}}
+    {{/if}}
+  </div>
+  <span class="amount">
+    {{format-currency plan.currency plan.amountDollars}}
+  </span>
+{{/ds-button}}

assets/javascripts/discourse/templates/s/show.hbs

@@ -21,8 +21,7 @@
 
       {{payment-options
         plans=model.plans
-        paymentsAllowed=paymentsAllowed
-        planTypeIsSelected=planTypeIsSelected
+        selectedPlan=selectedPlan
       }}
 
       <hr>
@@ -32,12 +31,12 @@
       {{#if loading}}
         {{loading-spinner}}
       {{else}}
-        {{#d-button
+        {{d-button
           disabled=loading
           action="stripePaymentHandler"
-          class="btn btn-primary btn-payment"}}
-          {{buttonText}}
-        {{/d-button}}
+          class="btn btn-primary btn-payment"
+          label="discourse_subscriptions.plans.payment_button"
+        }}
       {{/if}}
 
     {{/unless}}