MM-8708 Remove api package (#8784)

* Remove api package

* Remove api dependency from cmd package

* Remove EnableAPIv3 setting

* Update web tests

* Add more websocket tests

* Move some ws and oauth tests to api4 package

* Move command tests into api4 package

* Test fixes

* Fix msg command test

* Add some app file tests

model/client4.go

@@ -13,6 +13,33 @@ import (
 	"net/url"
 	"strconv"
 	"strings"
+	"time"
+)
+
+const (
+	HEADER_REQUEST_ID         = "X-Request-ID"
+	HEADER_VERSION_ID         = "X-Version-ID"
+	HEADER_CLUSTER_ID         = "X-Cluster-ID"
+	HEADER_ETAG_SERVER        = "ETag"
+	HEADER_ETAG_CLIENT        = "If-None-Match"
+	HEADER_FORWARDED          = "X-Forwarded-For"
+	HEADER_REAL_IP            = "X-Real-IP"
+	HEADER_FORWARDED_PROTO    = "X-Forwarded-Proto"
+	HEADER_TOKEN              = "token"
+	HEADER_BEARER             = "BEARER"
+	HEADER_AUTH               = "Authorization"
+	HEADER_REQUESTED_WITH     = "X-Requested-With"
+	HEADER_REQUESTED_WITH_XML = "XMLHttpRequest"
+	STATUS                    = "status"
+	STATUS_OK                 = "OK"
+	STATUS_FAIL               = "FAIL"
+	STATUS_REMOVE             = "REMOVE"
+
+	CLIENT_DIR = "client"
+
+	API_URL_SUFFIX_V1 = "/api/v1"
+	API_URL_SUFFIX_V4 = "/api/v4"
+	API_URL_SUFFIX    = API_URL_SUFFIX_V4
 )
 
 type Response struct {
@@ -32,6 +59,24 @@ type Client4 struct {
 	AuthType   string
 }
 
+func closeBody(r *http.Response) {
+	if r.Body != nil {
+		ioutil.ReadAll(r.Body)
+		r.Body.Close()
+	}
+}
+
+// Must is a convenience function used for testing.
+func (c *Client4) Must(result interface{}, resp *Response) interface{} {
+	if resp.Error != nil {
+
+		time.Sleep(time.Second)
+		panic(resp.Error)
+	}
+
+	return result
+}
+
 func NewAPIv4Client(url string) *Client4 {
 	return &Client4{url, url + API_URL_SUFFIX, &http.Client{}, "", ""}
 }
@@ -64,6 +109,11 @@ func BuildResponse(r *http.Response) *Response {
 	}
 }
 
+func (c *Client4) MockSession(sessionToken string) {
+	c.AuthToken = sessionToken
+	c.AuthType = HEADER_BEARER
+}
+
 func (c *Client4) SetOAuthToken(token string) {
 	c.AuthToken = token
 	c.AuthType = HEADER_TOKEN
@@ -2966,6 +3016,28 @@ func (c *Client4) DeauthorizeOAuthApp(appId string) (bool, *Response) {
 	}
 }
 
+// GetOAuthAccessToken is a test helper function for the OAuth access token endpoint.
+func (c *Client4) GetOAuthAccessToken(data url.Values) (*AccessResponse, *Response) {
+	rq, _ := http.NewRequest(http.MethodPost, c.Url+"/oauth/access_token", strings.NewReader(data.Encode()))
+	rq.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	rq.Close = true
+
+	if len(c.AuthToken) > 0 {
+		rq.Header.Set(HEADER_AUTH, c.AuthType+" "+c.AuthToken)
+	}
+
+	if rp, err := c.HttpClient.Do(rq); err != nil || rp == nil {
+		return nil, &Response{StatusCode: http.StatusForbidden, Error: NewAppError(c.Url+"/oauth/access_token", "model.client.connecting.app_error", nil, err.Error(), 403)}
+	} else {
+		defer closeBody(rp)
+		if rp.StatusCode >= 300 {
+			return nil, BuildErrorResponse(rp, AppErrorFromJson(rp.Body))
+		} else {
+			return AccessResponseFromJson(rp.Body), BuildResponse(rp)
+		}
+	}
+}
+
 // Elasticsearch Section
 
 // TestElasticsearch will attempt to connect to the configured Elasticsearch server and return OK if configured