paypal/README.md

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PayPal REST API

#### Usage

```
// Create a client instance
c, err := paypalsdk.NewClient("clietnid", "secret", paypalsdk.APIBaseSandBox)
```

```
// Redirect client to this URL with provided redirect URI and necessary scopes. It's necessary to retreive authorization_code
authCodeURL, err := c.GetAuthorizationCodeURL("https://example.com/redirect-uri1", []string{"address"})
```

```
// When you will have authorization_code you can get an access_token
accessToken, err := c.GetAccessToken(authCode, "https://example.com/redirect-uri2")
```

```
// Now we can create a paypal payment
amount := Amount{
    Total:    15.1111,
    Currency: "USD",
}
paymentResult, err := c.CreateDirectPaypalPayment(amount, "http://example.com/redirect-uri3")

// If paymentResult.ID is not empty and paymentResult.Links is also we can redirect user to approval page (paymentResult.Links[0]). After approval user will be redirected to return_url from Request with PaymentID

// And the last step is to execute approved payment
// paymentID is returned via return_url
paymentID := "PAY-17S8410768582940NKEE66EQ"
// payerID is returned via return_url
payerID := "7E7MGXCWTTKK2"
executeResult, err := c.ExecuteApprovedPayment(paymentID, payerID)
```