adding delete branch api

Author: KittyJose

lib/const.js

@@ -34,6 +34,7 @@ module.exports = Object.freeze({
     REBASE: 'rebase',
     RESET: 'reset',
     BRANCH: 'branch',
+    DELETE_BRANCH: 'delete_branch',
     ADD_CSV: 'add_csv',
     GET_CSV: 'get_csv',
     UPDATE_CSV: 'update_csv',

lib/dispatchRequest.js

@@ -66,6 +66,7 @@ function DispatchRequest(url, action, payload, local_auth, remote_auth = null) {
         case CONST.DELETE_CSV:
         case CONST.DELETE_GRAPH:
         case CONST.DELETE_USER:
+        case CONST.DELETE_BRANCH:
         case CONST.DELETE_ORGANIZATION:
             if (payload) {
                 options.headers = options.headers ? options.headers : {}

lib/woqlClient.js

@@ -492,7 +492,7 @@ WOQLClient.prototype.getCSV = function(csv_name, download, gtype, gid) {
  */
 WOQLClient.prototype.message = function(message, endpoint) {
     const url = this.api()
-    url += (endpoint ? this.api() + endpoint : "message") 
+    url += (endpoint ? this.api() + endpoint : "message")
     return this.dispatch(CONST.MESSAGE, url, message).then(response => {
         return response
     })
@@ -570,6 +570,19 @@ WOQLClient.prototype.branch = function(new_branch_id, source_free) {
     return Promise.reject(new Error(ErrorMessage.getInvalidParameterMessage(CONST.BRANCH, errmsg)))
 }
 
+/**
+ * deletes a branch from database
+ * @param {string} branch_id - local identifier of the branch
+ * @returns {Promise}
+ */
+WOQLClient.prototype.deleteBranch = function(branch_id) {
+    if (branch_id) {
+        return this.dispatch(CONST.DELETE_BRANCH, this.connectionConfig.branchURL(branch_id))
+    }
+    let errmsg = `Branch parameter error - you must specify a valid new branch id`
+    return Promise.reject(new Error(ErrorMessage.getInvalidParameterMessage(CONST.BRANCH, errmsg)))
+}
+
 /**
  * Pull updates from a remote repository to the current db and merges them
  * @param {object} [remote_source_repo] - source repo - {remote: "origin", "remote_branch": "main", "author": "admin", "message": "message"}