Add a settings to control URL substitution (#57)

README.md

@@ -33,6 +33,8 @@ Go to Settings --> Scroll down to the Plugins section, and click on Webex Plugin
 
 Insert the Webex Meetings URL for your organization. It is often in the format of `<companyname>.my.webex.com` or `<companyname>.webex.com`.
 
+Depending on your situation, you will want to disable the URL conversion (known unsupported on some case with Linux clients).
+
 ## Usage
 Easily start and join Webex meetings directly from Mattermost
 

plugin.json

@@ -30,6 +30,13 @@
                 "help_text": "The hostname for your team's Webex site. For example: teamsite.webex.com.",
                 "placeholder": "teamsite.webex.com",
                 "default": null
+            },
+            {
+                "key": "UrlConversion",
+                "display_name": "Convert Webex URLs:",
+                "type": "bool",
+                "help_text": "Enable or disable the conversion of URL: replace /meet/ by /join/ or /start/.",
+                "default": true
             }
         ]
     }

server/configuration.go

@@ -28,6 +28,8 @@ import (
 type configuration struct {
 	SiteHost string `json:"sitehost"`
 
+	URLConversion bool `json:"url_conversion"`
+
 	// siteName is the SiteHost up to .webex.com
 	// Eg., for testsite.my.webex.com, siteName would be: testsite.my
 	siteName string

server/http_test.go

@@ -184,8 +184,9 @@ func TestPlugin(t *testing.T) {
 
 			p := Plugin{}
 			p.setConfiguration(&configuration{
-				SiteHost: tc.SiteHost,
-				siteName: parseSiteNameFromSiteHost(tc.SiteHost),
+				SiteHost:      tc.SiteHost,
+				siteName:      parseSiteNameFromSiteHost(tc.SiteHost),
+				URLConversion: true,
 			})
 			p.SetAPI(api)
 

server/meeting.go

@@ -73,11 +73,19 @@ func (p *Plugin) startMeetingFromRoomURL(details meetingDetails) (*meetingPosts,
 }
 
 func (p *Plugin) makeJoinURL(meetingURL string) string {
-	return strings.Replace(meetingURL, "webex.com/meet/", "webex.com/join/", 1)
+	if p.getConfiguration().URLConversion {
+		meetingURL = strings.Replace(meetingURL, "webex.com/meet/", "webex.com/join/", 1)
+	}
+
+	return meetingURL
 }
 
 func (p *Plugin) makeStartURL(meetingURL string) string {
-	return strings.Replace(meetingURL, "webex.com/meet/", "webex.com/start/", 1)
+	if p.getConfiguration().URLConversion {
+		meetingURL = strings.Replace(meetingURL, "webex.com/meet/", "webex.com/start/", 1)
+	}
+
+	return meetingURL
 }
 
 func (p *Plugin) getURLFromRoomID(roomID string) (string, error) {