From d15de42a75ee0f722e8779af1ecff8b51e59c56d Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Sat, 25 Nov 2017 22:14:28 +0900
Subject: settings helpers

---
 src/shared/settings/values.js | 95 ++++++++++++++++++++++++++++++++++++-------
 1 file changed, 80 insertions(+), 15 deletions(-)

(limited to 'src/shared')

diff --git a/src/shared/settings/values.js b/src/shared/settings/values.js
index d86cfdc..4482fbb 100644
--- a/src/shared/settings/values.js
+++ b/src/shared/settings/values.js
@@ -1,4 +1,6 @@
-const operationFromName = (name) => {
+import DefaultSettings from './default';
+
+const operationFromFormName = (name) => {
   let [type, argStr] = name.split('?');
   let args = {};
   if (argStr) {
@@ -7,29 +9,92 @@ const operationFromName = (name) => {
   return Object.assign({ type }, args);
 };
 
-const fromJson = (json) => {
+const operationToFormName = (op) => {
+  let type = op.type;
+  let args = Object.assign({}, op);
+  delete args.type;
+
+  if (Object.keys(args).length === 0) {
+    return type;
+  }
+  return op.type + '?' + JSON.stringify(args);
+};
+
+const valueFromJson = (json) => {
   return JSON.parse(json);
 };
 
-const fromForm = (form) => {
-  let keymaps = {};
-  for (let name of Object.keys(form.keymaps)) {
-    let keys = form.keymaps[name];
-    keymaps[keys] = operationFromName(name);
+const valueFromForm = (form) => {
+  let keymaps = undefined;
+  if (form.keymaps) {
+    keymaps = {};
+    for (let name of Object.keys(form.keymaps)) {
+      let keys = form.keymaps[name];
+      keymaps[keys] = operationFromFormName(name);
+    }
   }
 
-  let engines = {};
-  for (let { name, url } of form.search.engines) {
-    engines[name] = url;
+  let search = undefined;
+  if (form.search) {
+    search = { default: form.search.default };
+
+    if (form.search.engines) {
+      search.engines = {};
+      for (let [name, url] of form.search.engines) {
+        search.engines[name] = url;
+      }
+    }
   }
-  let search = {
-    default: form.search.default,
-    engines,
-  };
 
   let blacklist = form.blacklist;
 
   return { keymaps, search, blacklist };
 };
 
-export { fromJson, fromForm };
+const jsonFromValue = (value) => {
+  return JSON.stringify(value, undefined, 2);
+};
+
+const formFromValue = (value) => {
+
+  let keymaps = undefined;
+  if (value.keymaps) {
+    let allowedOps = new Set(Object.keys(DefaultSettings.form.keymaps));
+
+    keymaps = {};
+    for (let keys of Object.keys(value.keymaps)) {
+      let op = operationToFormName(value.keymaps[keys]);
+      if (allowedOps.has(op)) {
+        keymaps[op] = keys;
+      }
+    }
+  }
+
+  let search = undefined;
+  if (value.search) {
+    search = { default: value.search.default };
+    if (value.search.engines) {
+      search.engines = Object.keys(value.search.engines).map((name) => {
+        return [name, value.search.engines[name]];
+      });
+    }
+  }
+
+  let blacklist = value.blacklist;
+
+  return { keymaps, search, blacklist };
+};
+
+const jsonFromForm = (form) => {
+  return jsonFromValue(valueFromForm(form));
+};
+
+const formFromJson = (json) => {
+  let value = valueFromJson(json);
+  return formFromValue(value);
+};
+
+export {
+  valueFromJson, valueFromForm, jsonFromValue, formFromValue,
+  jsonFromForm, formFromJson
+};
-- 
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