1 files changed, 84 insertions, 0 deletions

diff --git a/web/assets/js/langs.js b/web/assets/js/langs.js
new file mode 100644
index 00000000..de11aa91
--- /dev/null
+++ b/web/assets/js/langs.js
@@ -0,0 +1,84 @@
+supportLangs = [
+    {
+       name : "English",
+       value : "en-US",
+       icon : "🇺🇸"
+    },
+	{
+        name : "Farsi",
+        value : "fa_IR",
+        icon : "🇮🇷"
+    },
+    {
+        name : "汉语",
+        value : "zh-Hans",
+        icon : "🇨🇳"
+    },
+]
+
+function getLang(){
+    let lang = getCookie('lang')
+
+    if (! lang){
+        if (window.navigator){
+            lang = window.navigator.language || window.navigator.userLanguage;
+
+            if (isSupportLang(lang)){
+                setCookie('lang' , lang , 150)
+            }else{
+                setCookie('lang' , 'en-US' , 150)
+                window.location.reload();
+            }
+        }else{
+            setCookie('lang' , 'en-US' , 150)
+            window.location.reload();
+        }
+    }
+
+    return lang;
+}
+
+function setLang(lang){
+
+    if (!isSupportLang(lang)){
+        lang = 'en-US';
+    }
+
+    setCookie('lang' , lang , 150)
+    window.location.reload();
+}
+
+function isSupportLang(lang){
+    for (l of supportLangs){
+        if (l.value === lang){
+            return true;
+        }
+    }
+
+    return false;
+}
+
+
+
+function getCookie(cname) {
+    let name = cname + "=";
+    let decodedCookie = decodeURIComponent(document.cookie);
+    let ca = decodedCookie.split(';');
+    for(let i = 0; i <ca.length; i++) {
+        let c = ca[i];
+        while (c.charAt(0) == ' ') {
+            c = c.substring(1);
+        }
+        if (c.indexOf(name) == 0) {
+            return c.substring(name.length, c.length);
+        }
+    }
+    return "";
+}
+
+function setCookie(cname, cvalue, exdays) {
+    const d = new Date();
+    d.setTime(d.getTime() + (exdays*24*60*60*1000));
+    let expires = "expires="+ d.toUTCString();
+    document.cookie =  cname + "=" + cvalue + ";" + expires + ";path=/";
+}
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