API endpoint to mark invoice as paid

htdocs/compta/facture/class/api_invoices.class.php

@@ -1555,20 +1555,11 @@ class Invoices extends DolibarrApi
 		$amounts = array();
 		$multicurrency_amounts = array();
 
-		// Clean parameters amount if payment is for a credit note
-		if ($this->invoice->type == Facture::TYPE_CREDIT_NOTE) {
-			$resteapayer = price2num($resteapayer, 'MT');
-			$amounts[$id] = (float) price2num(-1 * (float) $resteapayer, 'MT');
-			// Multicurrency
-			$newvalue = price2num($this->invoice->multicurrency_total_ttc, 'MT');
-			$multicurrency_amounts[$id] = (float) price2num(-1 * (float) $newvalue, 'MT');
-		} else {
 		$resteapayer = price2num($resteapayer, 'MT');
 		$amounts[$id] = (float) $resteapayer;
 		// Multicurrency
 		$newvalue = price2num($this->invoice->multicurrency_total_ttc, 'MT');
 		$multicurrency_amounts[$id] = (float) $newvalue;
-		}
 
 		// Creation of payment line
 		$paymentobj = new Paiement($this->db);

htdocs/fourn/class/api_supplier_invoices.class.php

@@ -594,6 +594,55 @@ class SupplierInvoices extends DolibarrApi
 		return $paiement_id;
 	}
 
+	/**
+	 * Mark a supplier invoice as paid.
+	 *
+	 * @param int $id  Supplier invoice ID
+	 *
+	 * @url POST {id}/setpaid
+	 *
+	 * @return object Updated invoice (cleaned)
+	 *
+	 * @throws RestException 400 Already paid
+	 * @throws RestException 403 Not allowed
+	 * @throws RestException 404 Not found
+	 * @throws RestException 500 System error
+	 */
+	public function setpaid($id)
+	{
+		if (!DolibarrApiAccess::$user->hasRight("fournisseur", "facture", "creer")) {
+			throw new RestException(403);
+		}
+
+		if (!DolibarrApi::_checkAccessToResource('fournisseur', $id, 'facture_fourn', 'facture')) {
+			throw new RestException(403, 'Access not allowed for login ' . DolibarrApiAccess::$user->login);
+		}
+
+		if ($this->invoice->fetch($id) <= 0) {
+			throw new RestException(404, 'Supplier invoice not found');
+		}
+
+		$alreadyPaid =
+			((int) ($this->invoice->paye ?? 0) === 1) ||
+			((int) ($this->invoice->paid ?? 0) === 1) ||
+			((int) ($this->invoice->fk_statut ?? -1) === 2) ||
+			((int) ($this->invoice->statut ?? -1) === 2) ||
+			((int) ($this->invoice->status ?? -1) === 2);
+
+		if ($alreadyPaid) {
+			throw new RestException(400, 'Invoice is already marked as paid');
+		}
+
+		$res = $this->invoice->setPaid(DolibarrApiAccess::$user);
+		if ($res <= 0) {
+			throw new RestException(500, 'Error when setting invoice as paid: ' . $this->invoice->error);
+		}
+
+		// Reload and return cleaned object
+		$this->invoice->fetch($id);
+		return $this->_cleanObjectDatas($this->invoice);
+	}
+
 	/**
 	 * Get lines of a supplier invoice
 	 *