/
client.go
154 lines (125 loc) · 3.11 KB
/
client.go
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package savey
import (
"bytes"
"errors"
"net/http"
"net/http/cookiejar"
"net/url"
)
const (
defaultBaseURL = "http://www.savey.co/"
dashboardURL = defaultBaseURL + "dashboard/"
defaultUserAgent = "go-savey"
)
// Client represents savey client.
type Client struct {
// http client
client *http.Client
// base url for all requests
BaseURL *url.URL
// user agent header
UserAgent string
// services
Categories *CategoryService
Accounts *AccountService
Transactions *TransactionService
}
// CreateDefaultHTTPClient creates default HTTP with cookie jar.
func CreateDefaultHTTPClient() (*http.Client, error) {
jar, err := cookiejar.New(nil)
if err != nil {
return nil, err
}
return &http.Client{Jar: jar}, nil
}
// NewClient creates new Savey client.
func NewClient(httpClient *http.Client) (*Client, error) {
baseURL, err := url.Parse(defaultBaseURL)
if err != nil {
return nil, err
}
if httpClient == nil {
httpClient, err = CreateDefaultHTTPClient()
if err != nil {
return nil, err
}
}
c := &Client{
client: httpClient,
BaseURL: baseURL,
UserAgent: defaultUserAgent,
}
c.Categories = &CategoryService{client: c}
c.Accounts = &AccountService{client: c}
c.Transactions = &TransactionService{client: c}
return c, nil
}
// NewRequest creates a new HTTP request.
func (c *Client) NewRequest(method string, endpointURL string, body *url.Values) (*http.Request, error) {
rel, err := url.Parse(endpointURL)
if err != nil {
return nil, err
}
u := c.BaseURL.ResolveReference(rel)
buffer := new(bytes.Buffer)
if body != nil {
buffer = bytes.NewBufferString(body.Encode())
}
req, err := http.NewRequest(method, u.String(), buffer)
if err != nil {
return nil, err
}
req.Header.Add("User-Agent", c.UserAgent)
if method == "POST" {
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
}
return req, nil
}
// Do performs HTTP request and returns HTTP response.
func (c *Client) Do(req *http.Request) (*http.Response, error) {
return c.client.Do(req)
}
// Get creates a new GET HTTP request.
func (c *Client) Get(url string) (*http.Request, error) {
return c.NewRequest("GET", url, nil)
}
// Post creates a new POST HTTP request.
func (c *Client) Post(url string, body *url.Values) (*http.Request, error) {
return c.NewRequest("POST", url, body)
}
// Login logs in user with provided username and password.
func (c *Client) Login(username string, password string) error {
payload := &url.Values{
"identity": {username},
"credential": {password},
}
url := "user/login"
req, err := c.Post(url, payload)
if err != nil {
return err
}
resp, err := c.Do(req)
if err != nil {
return err
}
if resp.Request.URL.String() != dashboardURL {
return errors.New("Can not login with provided credentials.")
}
return nil
}
// Logout logs out currently logged user.
func (c *Client) Logout() error {
url := "user/logout"
req, err := c.Get(url)
if err != nil {
return err
}
resp, err := c.Do(req)
if err != nil {
return err
}
if resp.Request.URL.String() != defaultBaseURL {
return errors.New("There was an error while logging out.")
}
return nil
}