From b6efd51c4a7787b4878323b9e2b81e1d90b465c2 Mon Sep 17 00:00:00 2001
From: Aaron LI <aaronly.me@outlook.com>
Date: Sat, 5 Nov 2016 11:14:40 +0800
Subject: webui: Add "configs.js" with basic support with interact with server

NOTE:
Still missing important client-side functions to be usable, e.g.,
set the configuration form according to the received data from the
server, and mark the error states on the fields with invalid values.
---
 fg21sim/webui/static/js/configs.js | 127 +++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 fg21sim/webui/static/js/configs.js

diff --git a/fg21sim/webui/static/js/configs.js b/fg21sim/webui/static/js/configs.js
new file mode 100644
index 0000000..8a43a4a
--- /dev/null
+++ b/fg21sim/webui/static/js/configs.js
@@ -0,0 +1,127 @@
+/**
+ * Copyright (c) 2016 Weitian LI <liweitianux@live.com>
+ * MIT license
+ *
+ * Web UI of "fg21sim"
+ * Configuration form manipulations using the WebSocket communications
+ */
+
+"use strict";
+
+
+/**
+ * Clear the error states previously marked on the fields with invalid values.
+ */
+var clearConfigFormErrors = function () {
+  // TODO
+
+  $("#conf-form").find(":input").each(function () {
+    $(this);
+  });
+};
+
+
+/**
+ * Reset the form to its defaults as written in the HTML.
+ */
+var resetConfigForm = function () {
+  // Credit: http://stackoverflow.com/a/6364313
+  $("#conf-form")[0].reset();
+
+  // TODO: whether this is required ??
+  // Clear previously marked errors
+  clearConfigFormErrors();
+};
+
+
+/**
+ * Set the configuration form to the supplied data, and mark out the fields
+ * with error states as specified in the given errors.
+ *
+ * @param {Object} data - The input configurations data, key-value pairs.
+ * @param {Object} errors - The config options with invalid values.
+ */
+var setConfigForm = function (data, errors) {
+  // Clear previously marked errors
+  clearConfigFormErrors();
+};
+
+
+/**
+ * Reset the server-side configurations to the defaults.
+ *
+ * @param {Object} ws - The opened WebSocket object, through which send
+ *                      the request for configuration defaults.
+ */
+var resetServerConfigs = function (ws) {
+  var msg = {type: "configs", action: "reset"};
+  ws.send(JSON.stringify(msg));
+};
+
+
+/**
+ * Get the configurations from the server.
+ * When the response arrived, the bound function will take appropriate
+ * reactions (e.g., `setConfigForm()`) to update the form contents.
+ *
+ * @param {Array} [keys=null] - List of keys whose values will be requested.
+ *                              If `null` then request all configurations.
+ *
+ */
+var getServerConfigs = function (ws, keys) {
+  keys = typeof keys !== "undefined" ? keys : null;
+  var msg = {type: "configs", action: "get", keys: keys};
+  ws.send(JSON.stringify(msg));
+};
+
+
+/**
+ * Set the server-side configurations using the sent data from the client.
+ *
+ * NOTE: The server will validate the values and further check the whole
+ *       configurations, and response the config options with invalid values.
+ *
+ * @param {Object} [data={}] - Group of key-value pairs that to be sent to
+ *                             the server to update the configurations there.
+ */
+var setServerConfigs = function (ws, data) {
+  data = typeof data !== "undefined" ? data : {};
+  var msg = {type: "configs", action: "set", data: data};
+  ws.send(JSON.stringify(msg));
+};
+
+
+/**
+ * Request the server side configurations with user configuration file merged.
+ * When the response arrived, the bound function will delegate an appropriate
+ * function (i.e., `setConfigForm()`) to update the form contents.
+ */
+var loadServerConfigFile = function (ws) {
+  var workdir = $("input[name=workdir]").val().replace(/[\\\/]$/, "");
+  var configfile = $("input[name=configfile]").val().replace(/^.*[\\\/]/, "");
+  // FIXME: should use the native system path separator!
+  var filepath = workdir + "/" + configfile;
+  var msg = {type: "configs", action: "load", userconfig: filepath};
+  ws.send(JSON.stringify(msg));
+};
+
+
+/**
+ * Request the server side configurations with user configuration file merged.
+ * When the response arrived, the bound function will delegate an appropriate
+ * function (i.e., `setConfigForm()`) to update the form contents.
+ *
+ * @param {Boolean} [clobber=false] - Whether overwrite the existing file.
+ */
+var saveServerConfigFile = function (ws, clobber) {
+  clobber = typeof clobber !== "undefined" ? clobber : false;
+  var workdir = $("input[name=workdir]").val().replace(/[\\\/]$/, "");
+  var configfile = $("input[name=configfile]").val().replace(/^.*[\\\/]/, "");
+  // FIXME: should use the native system path separator!
+  var filepath = workdir + "/" + configfile;
+  var msg = {type: "configs",
+             action: "load",
+             outfile: filepath,
+             clobber: clobber};
+  ws.send(JSON.stringify(msg));
+};
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