MM-9779: Incorporate a Token into the invitations system (#8604)

* Incorporate a Token into the invitations system

* Adding unit tests

* Fixing some api4 client tests

* Removing unnecesary hash validation

* Change the Hash concept on invitations with tokenId

* Not send invitation if it wasn't able to create the Token

* Fixing some naming problems

* Changing the hash query params received from the client side

* Removed unneded data param in the token usage

model/client4.go

@@ -530,13 +530,13 @@ func (c *Client4) CreateUser(user *User) (*User, *Response) {
 	}
 }
 
-// CreateUserWithHash creates a user in the system based on the provided user struct and hash created.
-func (c *Client4) CreateUserWithHash(user *User, hash, data string) (*User, *Response) {
+// CreateUserWithToken creates a user in the system based on the provided tokenId.
+func (c *Client4) CreateUserWithToken(user *User, tokenId string) (*User, *Response) {
 	var query string
-	if hash != "" && data != "" {
-		query = fmt.Sprintf("?d=%v&h=%v", url.QueryEscape(data), hash)
+	if tokenId != "" {
+		query = fmt.Sprintf("?t=%v", tokenId)
 	} else {
-		err := NewAppError("MissingHashOrData", "api.user.create_user.missing_hash_or_data.app_error", nil, "", http.StatusBadRequest)
+		err := NewAppError("MissingHashOrData", "api.user.create_user.missing_token.app_error", nil, "", http.StatusBadRequest)
 		return nil, &Response{StatusCode: err.StatusCode, Error: err}
 	}
 	if r, err := c.DoApiPost(c.GetUsersRoute()+query, user.ToJson()); err != nil {
@@ -1340,16 +1340,16 @@ func (c *Client4) AddTeamMember(teamId, userId string) (*TeamMember, *Response)
 }
 
 // AddTeamMemberFromInvite adds a user to a team and return a team member using an invite id
-// or an invite hash/data pair.
-func (c *Client4) AddTeamMemberFromInvite(hash, dataToHash, inviteId string) (*TeamMember, *Response) {
+// or an invite token/data pair.
+func (c *Client4) AddTeamMemberFromInvite(token, inviteId string) (*TeamMember, *Response) {
 	var query string
 
 	if inviteId != "" {
 		query += fmt.Sprintf("?invite_id=%v", inviteId)
 	}
 
-	if hash != "" && dataToHash != "" {
-		query += fmt.Sprintf("?hash=%v&data=%v", hash, dataToHash)
+	if token != "" {
+		query += fmt.Sprintf("?token=%v", token)
 	}
 
 	if r, err := c.DoApiPost(c.GetTeamsRoute()+"/members/invite"+query, ""); err != nil {