Add initialize client, vault, and user api

client.go

@@ -0,0 +1,109 @@
+package go_truevault
+
+import (
+	"encoding/base64"
+	"errors"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"net/url"
+	"strings"
+)
+
+// Error API Response. Contains the error message as well as the type of error
+type Error struct {
+	Message string `json:"message"`
+	Type    string `json:"type"`
+}
+
+// Client makes all the API calls to TrueVault
+type Client struct {
+	apiKey  string
+	accessToken string
+	baseURL string
+	http    *http.Client
+}
+
+// NewClient creates a TrueVault client
+func NewClient(apiKey string, accessToken string) Client {
+	return Client{
+		apiKey: apiKey,
+		accessToken: accessToken,
+		baseURL: "https://api.truevault.com/",
+		http:    &http.Client{},
+	}
+}
+
+func (c Client) buildRequest(httpMethod string, slug string, data url.Values) (*http.Request, error) {
+	var body *strings.Reader
+	if data != nil {
+		body = strings.NewReader(data.Encode())
+	}
+
+	req, err := http.NewRequest(httpMethod, c.baseURL + slug, body)
+	if err != nil {
+		return nil, err
+	}
+
+	key := c.apiKey
+	if c.accessToken != "" {
+		key = c.accessToken
+	}
+
+	req.Header.Set("Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(key + ":")))
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	return req, nil
+}
+
+func (c Client) do(req *http.Request) ([]byte, error) {
+	resp, err := c.http.Do(req)
+	if err != nil {
+		return []byte{}, errors.New("failed to call true vault")
+	}
+
+	defer func() {
+		if err := resp.Body.Close(); err != nil {
+			log.Fatalf("truevault#post failed to close respones\n%+v", err)
+		}
+	}()
+
+	body, _ := ioutil.ReadAll(resp.Body)
+	if resp.StatusCode != 200 {
+		return []byte{}, err
+	}
+
+	return body, nil
+}
+
+func (c Client) post(slug string, data url.Values) ([]byte, error) {
+	req, err := c.buildRequest(http.MethodPost, slug, data)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	return c.do(req)
+}
+
+func (c *Client) delete(slug string, data url.Values) ([]byte, error) {
+	req, err := c.buildRequest(http.MethodDelete, slug, data)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	return c.do(req)
+}
+
+func (c *Client) get(slug string, queryParams url.Values) ([]byte, error) {
+	params := "?"
+	if queryParams != nil {
+		params += queryParams.Encode()
+	}
+
+	req, err := http.NewRequest(http.MethodGet, c.baseURL + slug + params, nil)
+	if err != nil {
+		return []byte{}, err
+	}
+
+	return c.do(req)
+}
+