$taxjar = TaxJar\Client::withApiKey($_ENV['TAXJAR_API_KEY']);

$categories = $taxjar->categories();

$rates = $taxjar->ratesForLocation(90002, [
  'city' => 'LOS ANGELES',
  'country' => 'US'
]);

echo $rates->combined_rate;
// 0.09

$order_taxes = $taxjar->taxForOrder([
  'from_country' => 'US',
  'from_zip' => '07001',
  'from_state' => 'NJ',
  'to_country' => 'US',
  'to_zip' => '07446',
  'to_state' => 'NJ',
  'amount' => 16.50,
  'shipping' => 1.5,
  'line_items' => [
    [
      'quantity' => 1,
      'unit_price' => 15.0,
      'product_tax_code' => 31000
    ]
  ]
]);

echo $order_taxes->amount_to_collect;
// 1.26

$orders = $taxjar->listOrders([
  'from_transaction_date' => '2014/01/01',
  'to_transaction_date' => '2015/05/30'
]);

$order = $taxjar->showOrder('123');

$order = $taxjar->createOrder([
  'transaction_id' => '123',
  'transaction_date' => '2015/05/14',
  'to_country' => 'US',
  'to_zip' => '90002',
  'to_state' => 'CA',
  'to_city' => 'Los Angeles',
  'to_street' => '123 Palm Grove Ln',
  'amount' => 17.45,
  'shipping' => 1.5,
  'sales_tax' => 0.95,
  'line_items' => [
    [
      'quantity' => 1,
      'product_identifier' => '12-34243-9',
      'description' => 'Fuzzy Widget',
      'unit_price' => 15.0,
      'sales_tax' => 0.95
    ]
  ]
]);

$order = $taxjar->updateOrder([
  'transaction_id' => '123',
  'amount' => 17.95,
  'shipping' => 2.0,
  'line_items' => [
    [
      'quantity' => 1,
      'product_identifier' => '12-34243-0',
      'description' => 'Heavy Widget',
      'unit_price' => 15.0,
      'discount' => 0.0,
      'sales_tax' => 0.95
    ]
  ]
]);

$taxjar->deleteOrder('123');

$refunds = $taxjar->listRefunds([
  'from_transaction_date' => '2014/01/01',
  'to_transaction_date' => '2015/05/30'
]);

$refund = $taxjar->showRefund('321');

$refund = $taxjar->createRefund([
  'transaction_id' => '321',
  'transaction_date' => '2015/05/14',
  'transaction_reference_id' => '123',
  'to_country' => 'US',
  'to_zip' => '90002',
  'to_state' => 'CA',
  'to_city' => 'Los Angeles',
  'to_street' => '123 Palm Grove Ln',
  'amount' => 17.45,
  'shipping' => 1.5,
  'sales_tax' => 0.95,
  'line_items' => [
    [
      'quantity' => 1,
      'product_identifier' => '12-34243-9',
      'description' => 'Fuzzy Widget',
      'unit_price' => 15.0,
      'sales_tax' => 0.95
    ]
  ]
]);

$refund = $taxjar->updateRefund([
  'transaction_id' => '321',
  'amount' => 17.95,
  'shipping' => 2.0,
  'line_items' => [
    [
      'quantity' => 1,
      'product_identifier' => '12-34243-0',
      'description' => 'Heavy Widget',
      'unit_price' => 15.0,
      'sales_tax' => 0.95
    ]
  ]
]);

$taxjar->deleteRefund('321');

$nexus_regions = $taxjar->nexusRegions();

$validation = $taxjar->validate([
  'vat' => 'FR40303265045'
]);

$summarized_rates = $taxjar->summaryRates();

$taxjar->setApiConfig('debug', true);