First commit

Author: Chris Joyce

CreateInvoice.go

@@ -0,0 +1,124 @@
+package whmcsgo
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+	"time"
+)
+
+/*
+CreateInvoice Create an invoice using the provided parameters.
+
+WHMCS API docs
+
+https://developers.whmcs.com/api-reference/getclients/
+
+Request Parameters
+
+draft
+	bool	Should the invoice be created in draft status (No need to pass $status also)	Optional
+paymentmethod
+	string	The payment method of the created invoice in system format	Optional
+taxrate
+	float	The first level tax rate to apply to the invoice to override the system default	Optional
+taxrate2
+	float	The second level tax rate to apply to the invoice to override the system default	Optional
+
+Response Parameters
+
+result
+	string	The result of the operation: success or error
+invoiceid
+	int	The ID of the newly created invoice
+status
+	string	The status of the newly created invoice
+
+*/
+func (s *BillingService) CreateInvoice(userID int, invoice CreateInvoiceRequest) (int, *Response, error) {
+	//a := new(BillingItem)
+
+	userid := fmt.Sprintf("%d", userID)
+	invoiceParams := map[string]string{"userid": userid}
+
+	switch invoice.Status {
+	case "Draft", "Unpaid", "Paid":
+		invoiceParams["status"] = invoice.Status
+	default:
+		return 0, &Response{}, fmt.Errorf("unsupported status value: %s", invoice.Status)
+	}
+
+	invoiceParams["sendinvoice"] = FormatBool(invoice.SendInvoice)
+	invoiceParams["autoapplycredit"] = FormatBool(invoice.AutoApplyCredit)
+
+	layout := "2006-01-02"
+
+	if !invoice.Date.IsZero() {
+		invoiceParams["date"] = invoice.Date.Format(layout)
+	}
+
+	if !invoice.DueDate.IsZero() {
+		invoiceParams["duedate"] = invoice.DueDate.Format(layout)
+	}
+
+	if len(invoice.Notes) > 0 {
+		invoiceParams["notes"] = invoice.Notes
+	}
+
+	if len(invoice.LineItems) < 1 {
+		return 0, &Response{}, fmt.Errorf("No Line items for invoice found")
+	}
+
+	for _, li := range invoice.LineItems {
+		//	fmt.Println(li)
+
+		invoiceParams[fmt.Sprintf("itemdescription%d", li.ItemOrder)] = li.ItemDescription
+		invoiceParams[fmt.Sprintf("itemamount%d", li.ItemOrder)] = fmt.Sprintf("%.2f", li.ItemAmount)
+		invoiceParams[fmt.Sprintf("itemtaxed%d", li.ItemOrder)] = FormatBool(li.ItemTaxed)
+
+	}
+	//
+
+	//
+	fmt.Println(invoiceParams)
+
+	resp, err := do(s.client, Params{parms: invoiceParams, u: "CreateInvoice"}, nil)
+	if err != nil {
+		return 0, resp, err
+	}
+
+	// WHMCS returns a error sometimes that is not in JSON !
+	r := strings.Replace(resp.Body, `<div class="alert alert-error">Module credit_purchase_improvement: Module error occured. Please contact with support.</div>`, ``, -1)
+	ir := createInvoiceReply{}
+	json.Unmarshal([]byte(r), &ir)
+
+	return ir.InvoiceID, resp, err
+
+}
+
+// CreateInvoiceRequest the new invoice to be created for a client
+type CreateInvoiceRequest struct {
+	// The ID of the client to charge
+	Status          string               // The status of the invoice being created Paid,Unpaid,Draft
+	SendInvoice     bool                 // Should the Invoice Created Email be sent to the client
+	Date            time.Time            // The date that the invoice should show as created
+	DueDate         time.Time            // The due date of the newly created invoice
+	Notes           string               // The notes to appear on the created invoice
+	AutoApplyCredit bool                 // Should credit on the client account be automatically applied to the invoice
+	LineItems       []CreateInvoiceItems // Invoice Line Items
+}
+
+// CreateInvoiceItems the new invoice to be created for a client
+type CreateInvoiceItems struct {
+	ItemOrder       int     // The Order to be show on the invoice
+	ItemDescription string  // The line items description
+	ItemAmount      float32 // The line items amount
+	ItemTaxed       bool    // The line items is taxed value
+
+}
+
+type createInvoiceReply struct {
+	InvoiceID int    `json:"invoiceid"`
+	Result    string `json:"result"`
+	Status    string `json:"status"`
+}