invoiceninja/app/ninja/repositories/ClientRepository.php

<?php namespace ninja\repositories;

use Client;
use Contact;

class ClientRepository
{
	public function save($publicId, $data)
	{			
		if ($publicId == "-1") 
		{
			$client = Client::createNew();
			$contact = Contact::createNew();
			$contact->is_primary = true;			
		}
		else
		{
			$client = Client::scope($publicId)->with('contacts')->firstOrFail();
			$contact = $client->contacts()->where('is_primary', '=', true)->firstOrFail();
		}
		
		$client->name = trim($data['name']);
		$client->work_phone = trim($data['work_phone']);
		$client->address1 = trim($data['address1']);
		$client->address2 = trim($data['address2']);
		$client->city = trim($data['city']);
		$client->state = trim($data['state']);
		$client->postal_code = trim($data['postal_code']);
		$client->country_id = $data['country_id'] ? $data['country_id'] : null;
		$client->notes = trim($data['notes']);
		$client->client_size_id = $data['client_size_id'] ? $data['client_size_id'] : null;
		$client->client_industry_id = $data['client_industry_id'] ? $data['client_industry_id'] : null;
		$client->website = trim($data['website']);
		$client->save();
		
		$isPrimary = true;
		$contactIds = [];

		foreach ($data['contacts'] as $record)
		{
			$record = (array) $record;

			if (isset($record['public_id']) && $record['public_id'])
			{
				$contact = Contact::scope($record['public_id'])->firstOrFail();
			}
			else
			{
				$contact = Contact::createNew();
			}

			$contact->email = trim($record['email']);
			$contact->first_name = trim($record['first_name']);
			$contact->last_name = trim($record['last_name']);
			$contact->phone = trim($record['phone']);
			$contact->is_primary = $isPrimary;
			$contact->send_invoice = $record['send_invoice'];
			$isPrimary = false;

			$client->contacts()->save($contact);
			$contactIds[] = $contact->public_id;
		}
		
		foreach ($client->contacts as $contact)
		{
			if (!in_array($contact->public_id, $contactIds))
			{	
				$contact->forceDelete();
			}
		}

		return $client;
	}
}