add meta.locale in jsoncv schema, use it when rendering the theme

sample.cv.json

@@ -280,6 +280,8 @@
     }
   ],
   "meta": {
+    "name": "JSONCV Sample Resume",
+    "locale": "en",
     "canonical": "https://raw.githubusercontent.com/reorx/jsoncv/master/schema/jsoncv.schema.json",
     "version": "v2.0.0",
     "lastModified": "2023-02-12T22:26:00"

schema/jsoncv.schema.json

@@ -509,6 +509,10 @@
           "type": "string",
           "description": "The name of this JSONCV data, will be used as part of the filename when downloading."
         },
+        "locale": {
+          "type": "string",
+          "description": "Locale of the CV, used by the theme to localize the CV. The value must be a valid IETF language tag. Default to 'en' if not specified. A full list of locale tag can be found at: https://cdn.jsdelivr.net/npm/dayjs@1/locale.json"
+        },
         "canonical": {
           "type": "string",
           "description": "URL (as per RFC 3986) to latest version of this document",

src/editor/main.js

@@ -25,7 +25,7 @@ import { getCVTitle } from '../themes/data';
 import { registerIconLib } from './je-iconlib';
 import { registerTheme } from './je-theme';
 
-const propertiesInOrder = ['basics', 'education', 'work', 'projects', 'sideProjects', 'skills', 'languages', 'interests', 'references', 'awards', 'publications', 'volunteer', 'certificates', 'meta']
+const propertiesInOrder = ['meta', 'basics', 'education', 'work', 'projects', 'sideProjects', 'skills', 'languages', 'interests', 'references', 'awards', 'publications', 'volunteer', 'certificates']
 const basicsPropertiesInOrder = ['name', 'label', 'email', 'phone', 'url', 'summary', 'image', 'location', 'profiles']
 
 // toc elements

src/themes/index.js

@@ -40,9 +40,15 @@ export function getTheme(name) {
   return themes[name]
 }
 
-export function renderTheme(theme, cvData, locale, options) {
+export function renderTheme(theme, cvData, options) {
+  const locale = cvData.meta.locale || 'en'
+  const messages = theme.index.localeMessages[locale]
+  if (!messages) {
+    return `Error: locale '${locale}' is not supported, please use one of: ${theme.index.locales}`
+  }
   const polyglot = new Polyglot({
-    phrases: theme.index.localeMessages[locale],
+    phrases: messages,
+    locale,
   })
   dayjs.locale(locale)
   return ejs.render(theme.template, getRenderData(cvData, locale, polyglot), options)
@@ -52,7 +58,7 @@ const cvStyleId = 'cv-style'
 
 export function renderThemeOn(name, el, data, primaryColor) {
   const theme = getTheme(name)
-  el.innerHTML = renderTheme(theme, data, 'zh-cn')
+  el.innerHTML = renderTheme(theme, data)
 
   upsertStyleTag(cvStyleId, theme.style)