adding reset branch api

Author: KittyJose

lib/connectionConfig.js

@@ -378,6 +378,14 @@ ConnectionConfig.prototype.branchURL = function(nuid) {
     return b + `/branch/${nuid}`
 }
 
+/**
+ * Generate URL for branch squash endpoint
+ */
+ConnectionConfig.prototype.squashBranchURL = function(nuid) {
+    let b = this.repoBase('squash')
+    return b + `/branch/${nuid}`
+}
+
 /**
  * Generate base db url consisting of server/action/organization/dbid
  */

lib/const.js

@@ -35,6 +35,7 @@ module.exports = Object.freeze({
     RESET: 'reset',
     BRANCH: 'branch',
     DELETE_BRANCH: 'delete_branch',
+    RESET_BRANCH: 'reset_branch',
     ADD_CSV: 'add_csv',
     GET_CSV: 'get_csv',
     UPDATE_CSV: 'update_csv',

lib/woqlClient.js

@@ -570,6 +570,21 @@ WOQLClient.prototype.branch = function(new_branch_id, source_free) {
     return Promise.reject(new Error(ErrorMessage.getInvalidParameterMessage(CONST.BRANCH, errmsg)))
 }
 
+/**
+ * Creates a branch starting from the current branch
+ * @param {string} branch_id - local identifier of the new branch
+ * @param {string} commit_msg - Textual message describing the reason for the update
+ * @returns {Promise}
+ */
+WOQLClient.prototype.resetBranch = function(branch_id, commit_msg) {
+    if (commit_msg && branch_id) {
+        let commit = this.generateCommitInfo(commit_msg)
+        return this.dispatch(CONST.RESET_BRANCH, this.connectionConfig.squashBranchURL(branch_id), commit)
+    }
+    let errmsg = `Branch parameter error - you must specify a valid new branch id and a commit message`
+    return Promise.reject(new Error(ErrorMessage.getInvalidParameterMessage(CONST.BRANCH, errmsg)))
+}
+
 /**
  * deletes a branch from database
  * @param {string} branch_id - local identifier of the branch