Creating db method to paginate all orders

cmd/api/handlers-api.go

@@ -164,6 +164,8 @@ func (app *application) CreateCustomerAndSubscribeToPlan(w http.ResponseWriter,
 			ExpiryMonth:         data.ExpiryMonth,
 			ExpiryYear:          data.ExpiryYear,
 			TransactionStatusID: 2,
+			PaymentIntent:       subscription.ID,
+			PaymentMethod:       data.PaymentMethod,
 		}
 		txnID, err := app.SaveTransaction(txn)
 		if err != nil {
@@ -514,11 +516,35 @@ func (app *application) ResetPassword(w http.ResponseWriter, r *http.Request) {
 }
 
 func (app *application) AllSales(w http.ResponseWriter, r *http.Request) {
-	allSales, err := app.DB.GetAllOrders(false)
+	var payload struct {
+		PageSize    int `json:"page_size"`
+		CurrentPage int `json:"page"`
+	}
+	err := app.readJSON(w, r, &payload)
 	if err != nil {
 		app.badRequest(w, r, err)
 	}
-	app.writeJSON(w, http.StatusOK, allSales)
+
+	allSales, lastPage, totalRecords, err := app.DB.GetAllOrdersPaginated(false, 2, 1)
+	if err != nil {
+		app.badRequest(w, r, err)
+	}
+
+	var resp struct {
+		CurrentPage  int             `json:"current_page"`
+		PageSize     int             `json:"page_size"`
+		LastPage     int             `json:"last_page"`
+		TotalRecords int             `json:"total_records"`
+		Orders       []*models.Order `json:"orders"`
+	}
+
+	resp.CurrentPage = 1
+	resp.PageSize = payload.PageSize
+	resp.LastPage = lastPage
+	resp.TotalRecords = totalRecords
+	resp.Orders = allSales
+
+	app.writeJSON(w, http.StatusOK, resp)
 }
 
 func (app *application) AllSubscriptions(w http.ResponseWriter, r *http.Request) {
@@ -587,3 +613,50 @@ func (app *application) RefundCharge(w http.ResponseWriter, r *http.Request) {
 
 	app.writeJSON(w, http.StatusOK, resp)
 }
+
+func (app *application) CancelSubscription(w http.ResponseWriter, r *http.Request) {
+	var subToCancel struct {
+		ID            int    `json:"id"`
+		PaymentIntent string `json:"pi"`
+		Currency      string `json:"currency"`
+	}
+
+	err := app.readJSON(w, r, &subToCancel)
+	if err != nil {
+		app.errorLog.Println(err)
+		app.badRequest(w, r, err)
+		return
+	}
+
+	// validate
+
+	card := cards.Card{
+		Secret:   app.config.stripe.secret,
+		Key:      app.config.stripe.key,
+		Currency: subToCancel.Currency,
+	}
+
+	err = card.CancelSubscription(subToCancel.PaymentIntent)
+	if err != nil {
+		app.errorLog.Println(err)
+		app.badRequest(w, r, err)
+		return
+	}
+
+	// update status in DB
+	err = app.DB.UpdateOrderStatus(subToCancel.ID, 3)
+	if err != nil {
+		app.badRequest(
+			w,
+			r,
+			errors.New("the subscription was refunded, but the database could not be updated"),
+		)
+		return
+	}
+
+	var resp jsonResponse
+	resp.OK = true
+	resp.Message = "Subscription canceled"
+
+	app.writeJSON(w, http.StatusOK, resp)
+}

cmd/api/helpers.go

@@ -53,12 +53,9 @@ func (app *application) writeJSON(
 }
 
 func (app *application) badRequest(w http.ResponseWriter, r *http.Request, err error) error {
-	var payload struct {
+	var payload jsonResponse
-		Error   bool   `json:"error"`
-		Message string `json:"message"`
-	}
 
-	payload.Error = true
+	payload.OK = false
 	payload.Message = err.Error()
 
 	out, err := json.MarshalIndent(payload, "", "\t")
@@ -73,11 +70,8 @@ func (app *application) badRequest(w http.ResponseWriter, r *http.Request, err e
 }
 
 func (app *application) invalidCredentials(w http.ResponseWriter) error {
-	var payload struct {
+	var payload jsonResponse
-		Error   bool   `json:"error"`
+	payload.OK = false
-		Message string `json:"message"`
-	}
-	payload.Error = true
 	payload.Message = "invalid authentication credentials"
 
 	err := app.writeJSON(w, http.StatusUnauthorized, payload)

cmd/api/routes-api.go

@@ -36,6 +36,7 @@ func (app *application) routes() http.Handler {
 		mux.Post("/all-subscriptions", app.AllSubscriptions)
 		mux.Post("/get-sale/{id}", app.GetSale)
 		mux.Post("/refund", app.RefundCharge)
+		mux.Post("/cancel-subscription", app.CancelSubscription)
 	})
 	mux.Post("/api/forgot-password", app.SendPasswordResetEmail)
 	mux.Post("/api/reset-password", app.ResetPassword)

cmd/web/handlers.go

@@ -384,9 +384,16 @@ func (app *application) ShowSale(w http.ResponseWriter, r *http.Request) {
 	stringMap := make(map[string]string)
 	stringMap["title"] = "Sale"
 	stringMap["cancel"] = "/admin/all-sales"
+	stringMap["refund-url"] = "/api/admin/refund"
+	stringMap["refund-btn"] = "Refund Order"
+	stringMap["refund-badge"] = "Refunded"
+
+	intMap := make(map[string]int)
+	intMap["isRefund"] = 1
 
 	if err := app.renderTemplate(w, r, "sale", &templateData{
 		StringMap: stringMap,
+		IntMap:    intMap,
 	}); err != nil {
 		app.errorLog.Println(err)
 	}
@@ -396,9 +403,16 @@ func (app *application) ShowSubscriptions(w http.ResponseWriter, r *http.Request
 	stringMap := make(map[string]string)
 	stringMap["title"] = "Subscriptions"
 	stringMap["cancel"] = "/admin/all-subscriptions"
+	stringMap["refund-url"] = "/api/admin/cancel-subscription"
+	stringMap["refund-btn"] = "Cancel Subscription"
+	stringMap["refund-badge"] = "Cancelled"
+
+	intMap := make(map[string]int)
+	intMap["is-refund"] = 0
 
 	if err := app.renderTemplate(w, r, "sale", &templateData{
 		StringMap: stringMap,
+		IntMap:    intMap,
 	}); err != nil {
 		app.errorLog.Println(err)
 	}

cmd/web/templates/all-subscriptions.page.gohtml

@@ -14,6 +14,7 @@ All Subscriptions
             <th>Customer</th>
             <th>Product</th>
             <th>Amount</th>
+            <th>Status</th>
         </tr>
     </thead>
     <tbody>

cmd/web/templates/sale.page.gohtml

@@ -4,7 +4,7 @@
 {{ end }}
 {{ define "content" }}
 <h2 class="mt-5">Sale</h2>
-<span id="refunded" class="badge bg-danger d-none">Refunded</span>
+<span id="refunded" class="badge bg-danger d-none">{{index .StringMap "refund-badge"}}</span>
 <span id="charged" class="badge bg-success d-none">Charged</span>
 <hr>
 <div class="alert alert-danger text-center d-none" id="messages"></div>
@@ -22,7 +22,7 @@
 </div>
 <hr>
 <a href='{{ index .StringMap "cancel" }}' class="btn btn-info">Cancel</a>
-<a id="refund-btn" href="#!" class="btn btn-warning d-none">Refund Order</a>
+<a id="refund-btn" href="#!" class="btn btn-warning d-none">{{index .StringMap "refund-btn"}}</a>
 <input type="hidden" id="pi" value="">
 <input type="hidden" id="charge-amount" value="">
 <input type="hidden" id="currency" value="">
@@ -32,8 +32,10 @@
 <script type="module">
     import {showInfo, refund} from "/static/js/sale.js"
     showInfo({{.API}});
+
+    const api = {{.API}} + {{index .StringMap "refund-url"}}
     document.getElementById("refund-btn").addEventListener("click", function(event) {
-        refund({{.API}});
+        refund(api, {{index .IntMap "is-refund"}});
     });
 </script>
 {{ end }}

internal/cards/cards.go

@@ -135,6 +135,20 @@ func (c *Card) Refund(pi string, amount int) error {
 	return nil
 }
 
+func (c *Card) CancelSubscription(subID string) error {
+	stripe.Key = c.Secret
+
+	params := &stripe.SubscriptionParams{
+		CancelAtPeriodEnd: stripe.Bool(true),
+	}
+
+	_, err := subscription.Update(subID, params)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
 func cardErrorMessage(code stripe.ErrorCode) string {
 	msg := ""
 

internal/models/models.go

@@ -361,6 +361,93 @@ func (m *DBModel) GetAllOrders(isRecurring bool) ([]*Order, error) {
 	return orders, nil
 }
 
+func (m *DBModel) GetAllOrdersPaginated(
+	isRecurring bool,
+	pageSize, page int,
+) ([]*Order, int, int, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	offset := (page - 1) * pageSize
+
+	orders := []*Order{}
+
+	query := `
+        SELECT
+            o.id, o.widget_id, o.transaction_id, o.customer_id,
+            o.status_id, o.quantity, o.amount, o.created_at, o.updated_at,
+            w.id, w.name, t.id, t.amount, t.currency, t.last_four,
+            t.expiry_month, t.expiry_year, t.payment_intent, t.bank_return_code,
+            c.id, c.first_name, c.last_name, c.email
+        FROM orders o
+            LEFT JOIN widgets w on (o.widget_id = w.id)
+            LEFT JOIN transactions t on (o.transaction_id = t.id)
+            LEFT JOIN customers c on (o.customer_id = c.id)
+        WHERE
+            w.is_recurring = ?
+        ORDER BY
+            o.created_at DESC
+        LIMIT ? OFFSET ?
+    `
+
+	rows, err := m.DB.QueryContext(ctx, query, isRecurring, pageSize, offset)
+	if err != nil {
+		return nil, 0, 0, err
+	}
+	defer rows.Close()
+
+	for rows.Next() {
+		var o Order
+		err = rows.Scan(
+			&o.ID,
+			&o.WidgetID,
+			&o.TransactionID,
+			&o.CustomerID,
+			&o.StatusID,
+			&o.Quantity,
+			&o.Amount,
+			&o.CreatedAt,
+			&o.UpdatedAt,
+			&o.Widget.ID,
+			&o.Widget.Name,
+			&o.Transaction.ID,
+			&o.Transaction.Amount,
+			&o.Transaction.Currency,
+			&o.Transaction.LastFour,
+			&o.Transaction.ExpiryMonth,
+			&o.Transaction.ExpiryYear,
+			&o.Transaction.PaymentIntent,
+			&o.Transaction.BankReturnCode,
+			&o.Customer.ID,
+			&o.Customer.FirstName,
+			&o.Customer.LastName,
+			&o.Customer.Email,
+		)
+		if err != nil {
+			return nil, 0, 0, err
+		}
+		orders = append(orders, &o)
+	}
+
+	query = `
+        SELECT COUNT(o.id)
+        FROM orders o
+        LEFT JOIN widgets w on (o.widget_id = w.id)
+        WHERE w.is_recurring = ?
+    `
+
+	var totalRecords int
+	countRow := m.DB.QueryRowContext(ctx, query, isRecurring)
+	err = countRow.Scan(&totalRecords)
+	if err != nil {
+		return nil, 0, 0, err
+	}
+
+	lastPage := totalRecords / pageSize
+
+	return orders, lastPage, totalRecords, nil
+}
+
 func (m *DBModel) GetOrderByID(ID int) (Order, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
 	defer cancel()

static/js/all-subscriptions.js

@@ -1,4 +1,4 @@
-import {formatCurrency} from "./common.js"
+import { formatCurrency } from "./common.js"
 
 export function showTable(api) {
     let token = localStorage.getItem("token");
@@ -17,26 +17,32 @@ export function showTable(api) {
         .then(response => response.json())
         .then(function (data) {
             if (data) {
-            data.forEach(function (i) {
+                data.forEach(function (i) {
-                let newRow = tbody.insertRow();
+                    let newRow = tbody.insertRow();
-                let newCell = newRow.insertCell();
+                    let newCell = newRow.insertCell();
 
-                newCell.innerHTML = `<a href="/admin/subscriptions/${i.id}">Order ${i.id}</a>`;
+                    newCell.innerHTML = `<a href="/admin/subscriptions/${i.id}">Order ${i.id}</a>`;
 
-                newCell = newRow.insertCell();
+                    newCell = newRow.insertCell();
-                let item = document.createTextNode(i.customer.last_name + ", " + i.customer.first_name);
+                    let item = document.createTextNode(i.customer.last_name + ", " + i.customer.first_name);
-                newCell.appendChild(item)
+                    newCell.appendChild(item)
 
-                newCell = newRow.insertCell();
+                    newCell = newRow.insertCell();
-                item = document.createTextNode(i.widget.name);
+                    item = document.createTextNode(i.widget.name);
-                newCell.appendChild(item)
+                    newCell.appendChild(item)
 
-                let cur = formatCurrency(i.transaction.amount)
+                    let cur = formatCurrency(i.transaction.amount)
-                newCell = newRow.insertCell();
+                    newCell = newRow.insertCell();
-                item = document.createTextNode(cur + "/month");
+                    item = document.createTextNode(cur + "/month");
-                newCell.appendChild(item)
+                    newCell.appendChild(item)
 
-            });
+                    newCell = newRow.insertCell();
+                    if (i.status_id != 1) {
+                        newCell.innerHTML = `<span class="badge bg-danger">Cancelled</span>`
+                    } else {
+                        newCell.innerHTML = `<span class="badge bg-success">Charged</span>`
+                    }
+                });
             } else {
                 let newRow = tbody.insertRow();
                 let newCell = newRow.insertCell();

static/js/sale.js

@@ -39,7 +39,7 @@ export function showInfo(api) {
         });
 }
 
-export function refund(api) {
+export function refund(api, isRefund) {
     Swal.fire({
         title: "Are you sure?",
         text: "You won't be able to undo this!",
@@ -47,7 +47,7 @@ export function refund(api) {
         showCancelButton: true,
         confirmButtonColor: "#3085d6",
         cancelButtonColor: "#d33",
-        confirmButtonText: "Refund"
+        confirmButtonText: isRefund === 1 ? "Refund" : "Cancel subscription"
     }).then((result) => {
         if (result.isConfirmed) {
             let payload = {
@@ -66,15 +66,15 @@ export function refund(api) {
                 body: JSON.stringify(payload),
             };
 
-            fetch(api + "/api/admin/refund", requestOptions)
+            fetch(api, requestOptions)
                 .then(response => response.json())
                 .then(function (data) {
                     console.log(data);
                     if (!data.ok) {
-                        showError(data.message)
+                        showError("messages", data.message)
 
                     } else {
-                        showSuccess("messages", "Refunded!")
+                        showSuccess("messages",  isRefund === 1 ? "Refunded" : "Subscription cancelled")
                         document.getElementById("refund-btn").classList.add("d-none");
                         document.getElementById("refunded").classList.remove("d-none");
                         document.getElementById("charged").classList.add("d-none");