add getinvoice endpoint

controllers_v2/invoice.ctrl.go

@@ -183,6 +183,45 @@ func (controller *InvoiceController) AddInvoice(c echo.Context) error {
 
 	return c.JSON(http.StatusOK, &responseBody)
 }
+
+// GetInvoice godoc
+// @Summary      Get a specific invoice
+// @Description  Retrieve information about a specific invoice by payment hash
+// @Accept       json
+// @Produce      json
+// @Tags         Account
+// @Param        payment_hash  path      string  true  "Payment hash"
+// @Success      200  {object}  Invoice
+// @Failure      400  {object}  responses.ErrorResponse
+// @Failure      500  {object}  responses.ErrorResponse
+// @Router       /v2/invoices/{payment_hash} [get]
+// @Security     OAuth2Password
 func (controller *InvoiceController) GetInvoice(c echo.Context) error {
-	return nil
+	userID := c.Get("UserID").(int64)
+	rHash := c.Param("payment_hash")
+	invoice, err := controller.svc.FindInvoiceByPaymentHash(c.Request().Context(), userID, rHash)
+	// Probably we did not find the invoice
+	if err != nil {
+		c.Logger().Errorf("Invalid checkpayment request user_id:%v payment_hash:%s", userID, rHash)
+		return c.JSON(http.StatusBadRequest, responses.BadArgumentsError)
+	}
+	responseBody := Invoice{
+		PaymentHash:     invoice.RHash,
+		PaymentRequest:  invoice.PaymentRequest,
+		Description:     invoice.Memo,
+		DescriptionHash: invoice.DescriptionHash,
+		PaymentPreimage: invoice.Preimage,
+		Destination:     invoice.DestinationPubkeyHex,
+		Amount:          invoice.Amount,
+		Fee:             invoice.Fee,
+		Status:          invoice.State,
+		Type:            common.InvoiceTypeUser,
+		ErrorMessage:    invoice.ErrorMessage,
+		SettledAt:       invoice.SettledAt.Time,
+		ExpiresAt:       invoice.ExpiresAt.Time,
+		IsPaid:          invoice.State == common.InvoiceStateSettled,
+		Keysend:         invoice.Keysend,
+		CustomRecords:   invoice.DestinationCustomRecords,
+	}
+	return c.JSON(http.StatusOK, &responseBody)
 }

docs/docs.go

@@ -246,6 +246,55 @@ const docTemplate = `{
                 }
             }
         },
+        "/v2/invoices/{payment_hash}": {
+            "get": {
+                "security": [
+                    {
+                        "OAuth2Password": []
+                    }
+                ],
+                "description": "Retrieve information about a specific invoice by payment hash",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Account"
+                ],
+                "summary": "Get a specific invoice",
+                "parameters": [
+                    {
+                        "type": "string",
+                        "description": "Payment hash",
+                        "name": "payment_hash",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.Invoice"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    },
+                    "500": {
+                        "description": "Internal Server Error",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v2/payments/bolt11": {
             "post": {
                 "security": [

docs/swagger.json

@@ -242,6 +242,55 @@
                 }
             }
         },
+        "/v2/invoices/{payment_hash}": {
+            "get": {
+                "security": [
+                    {
+                        "OAuth2Password": []
+                    }
+                ],
+                "description": "Retrieve information about a specific invoice by payment hash",
+                "consumes": [
+                    "application/json"
+                ],
+                "produces": [
+                    "application/json"
+                ],
+                "tags": [
+                    "Account"
+                ],
+                "summary": "Get a specific invoice",
+                "parameters": [
+                    {
+                        "type": "string",
+                        "description": "Payment hash",
+                        "name": "payment_hash",
+                        "in": "path",
+                        "required": true
+                    }
+                ],
+                "responses": {
+                    "200": {
+                        "description": "OK",
+                        "schema": {
+                            "$ref": "#/definitions/v2controllers.Invoice"
+                        }
+                    },
+                    "400": {
+                        "description": "Bad Request",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    },
+                    "500": {
+                        "description": "Internal Server Error",
+                        "schema": {
+                            "$ref": "#/definitions/responses.ErrorResponse"
+                        }
+                    }
+                }
+            }
+        },
         "/v2/payments/bolt11": {
             "post": {
                 "security": [

docs/swagger.yaml

@@ -272,6 +272,37 @@ paths:
       summary: Generate a new invoice
       tags:
       - Invoice
+  /v2/invoices/{payment_hash}:
+    get:
+      consumes:
+      - application/json
+      description: Retrieve information about a specific invoice by payment hash
+      parameters:
+      - description: Payment hash
+        in: path
+        name: payment_hash
+        required: true
+        type: string
+      produces:
+      - application/json
+      responses:
+        "200":
+          description: OK
+          schema:
+            $ref: '#/definitions/v2controllers.Invoice'
+        "400":
+          description: Bad Request
+          schema:
+            $ref: '#/definitions/responses.ErrorResponse'
+        "500":
+          description: Internal Server Error
+          schema:
+            $ref: '#/definitions/responses.ErrorResponse'
+      security:
+      - OAuth2Password: []
+      summary: Get a specific invoice
+      tags:
+      - Account
   /v2/invoices/incoming:
     get:
       consumes: