Refactor and update RocketChat bridge

* Add support for editing/deleting messages
* Add support for uploading files
* Add support for avatars
* Use the Rocket.Chat.Go.SDK
* Use the rest and streaming api

vendor/github.com/matterbridge/Rocket.Chat.Go.SDK/rest/users.go

@@ -0,0 +1,145 @@
+package rest
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"net/url"
+	"time"
+
+	"github.com/matterbridge/Rocket.Chat.Go.SDK/models"
+)
+
+type logoutResponse struct {
+	Status
+	Data struct {
+		Message string `json:"message"`
+	} `json:"data"`
+}
+
+type logonResponse struct {
+	Status
+	Data struct {
+		Token  string `json:"authToken"`
+		UserID string `json:"userID"`
+	} `json:"data"`
+}
+
+type CreateUserResponse struct {
+	Status
+	User struct {
+		ID        string    `json:"_id"`
+		CreatedAt time.Time `json:"createdAt"`
+		Services  struct {
+			Password struct {
+				Bcrypt string `json:"bcrypt"`
+			} `json:"password"`
+		} `json:"services"`
+		Username string `json:"username"`
+		Emails   []struct {
+			Address  string `json:"address"`
+			Verified bool   `json:"verified"`
+		} `json:"emails"`
+		Type         string            `json:"type"`
+		Status       string            `json:"status"`
+		Active       bool              `json:"active"`
+		Roles        []string          `json:"roles"`
+		UpdatedAt    time.Time         `json:"_updatedAt"`
+		Name         string            `json:"name"`
+		CustomFields map[string]string `json:"customFields"`
+	} `json:"user"`
+}
+
+// Login a user. The Email and the Password are mandatory. The auth token of the user is stored in the Client instance.
+//
+// https://rocket.chat/docs/developer-guides/rest-api/authentication/login
+func (c *Client) Login(credentials *models.UserCredentials) error {
+	if c.auth != nil {
+		return nil
+	}
+
+	if credentials.ID != "" && credentials.Token != "" {
+		c.auth = &authInfo{id: credentials.ID, token: credentials.Token}
+		return nil
+	}
+
+	response := new(logonResponse)
+	data := url.Values{"user": {credentials.Email}, "password": {credentials.Password}}
+	if err := c.PostForm("login", data, response); err != nil {
+		return err
+	}
+
+	c.auth = &authInfo{id: response.Data.UserID, token: response.Data.Token}
+	credentials.ID, credentials.Token = response.Data.UserID, response.Data.Token
+	return nil
+}
+
+// CreateToken creates an access token for a user
+//
+// https://rocket.chat/docs/developer-guides/rest-api/users/createtoken/
+func (c *Client) CreateToken(userID, username string) (*models.UserCredentials, error) {
+	response := new(logonResponse)
+	data := url.Values{"userId": {userID}, "username": {username}}
+	if err := c.PostForm("users.createToken", data, response); err != nil {
+		return nil, err
+	}
+	credentials := &models.UserCredentials{}
+	credentials.ID, credentials.Token = response.Data.UserID, response.Data.Token
+	return credentials, nil
+}
+
+// Logout a user. The function returns the response message of the server.
+//
+// https://rocket.chat/docs/developer-guides/rest-api/authentication/logout
+func (c *Client) Logout() (string, error) {
+
+	if c.auth == nil {
+		return "Was not logged in", nil
+	}
+
+	response := new(logoutResponse)
+	if err := c.Get("logout", nil, response); err != nil {
+		return "", err
+	}
+
+	return response.Data.Message, nil
+}
+
+// CreateUser being logged in with a user that has permission to do so.
+//
+// https://rocket.chat/docs/developer-guides/rest-api/users/create
+func (c *Client) CreateUser(req *models.CreateUserRequest) (*CreateUserResponse, error) {
+	body, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+
+	response := new(CreateUserResponse)
+	err = c.Post("users.create", bytes.NewBuffer(body), response)
+	return response, err
+}
+
+// UpdateUser updates a user's data being logged in with a user that has permission to do so.
+//
+// https://rocket.chat/docs/developer-guides/rest-api/users/update/
+func (c *Client) UpdateUser(req *models.UpdateUserRequest) (*CreateUserResponse, error) {
+	body, err := json.Marshal(req)
+	if err != nil {
+		return nil, err
+	}
+
+	response := new(CreateUserResponse)
+	err = c.Post("users.update", bytes.NewBuffer(body), response)
+	return response, err
+}
+
+// SetUserAvatar updates a user's avatar being logged in with a user that has permission to do so.
+// Currently only passing an URL is possible.
+//
+// https://rocket.chat/docs/developer-guides/rest-api/users/setavatar/
+func (c *Client) SetUserAvatar(userID, username, avatarURL string) (*Status, error) {
+	body := fmt.Sprintf(`{ "userId": "%s","username": "%s","avatarUrl":"%s"}`, userID, username, avatarURL)
+	response := new(Status)
+	err := c.Post("users.setAvatar", bytes.NewBufferString(body), response)
+	return response, err
+}