From 864e73cdc75a2fb0e4fad500f649dae2343c10a8 Mon Sep 17 00:00:00 2001
From: Evgeny Zinoviev <me@ch1p.io>
Date: Mon, 11 Jul 2022 02:59:35 +0300
Subject: rewrite css and js assets building

---
 htdocs/js/common/02-ajax.js | 118 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 htdocs/js/common/02-ajax.js

(limited to 'htdocs/js/common/02-ajax.js')

diff --git a/htdocs/js/common/02-ajax.js b/htdocs/js/common/02-ajax.js
new file mode 100644
index 0000000..c432a51
--- /dev/null
+++ b/htdocs/js/common/02-ajax.js
@@ -0,0 +1,118 @@
+//
+// AJAX
+//
+(function() {
+
+    var defaultOpts = {
+        json: true
+    };
+
+    function createXMLHttpRequest() {
+        if (window.XMLHttpRequest) {
+            return new XMLHttpRequest();
+        }
+
+        var xhr;
+        try {
+            xhr = new ActiveXObject('Msxml2.XMLHTTP');
+        } catch (e) {
+            try {
+                xhr = new ActiveXObject('Microsoft.XMLHTTP');
+            } catch (e) {}
+        }
+        if (!xhr) {
+            console.error('Your browser doesn\'t support XMLHttpRequest.');
+        }
+        return xhr;
+    }
+
+    function request(method, url, data, optarg1, optarg2) {
+        data = data || null;
+
+        var opts, callback;
+        if (optarg2 !== undefined) {
+            opts = optarg1;
+            callback = optarg2;
+        } else {
+            callback = optarg1;
+        }
+
+        opts = opts || {};
+
+        if (typeof callback != 'function') {
+            throw new Error('callback must be a function');
+        }
+
+        if (!url) {
+            throw new Error('no url specified');
+        }
+
+        switch (method) {
+            case 'GET':
+                if (isObject(data)) {
+                    for (var k in data) {
+                        if (data.hasOwnProperty(k)) {
+                            url += (url.indexOf('?') == -1 ? '?' : '&')+encodeURIComponent(k)+'='+encodeURIComponent(data[k])
+                        }
+                    }
+                }
+                break;
+
+            case 'POST':
+                if (isObject(data)) {
+                    var sdata = [];
+                    for (var k in data) {
+                        if (data.hasOwnProperty(k)) {
+                            sdata.push(encodeURIComponent(k)+'='+encodeURIComponent(data[k]));
+                        }
+                    }
+                    data = sdata.join('&');
+                }
+                break;
+        }
+
+        opts = Object.assign({}, defaultOpts, opts);
+
+        var xhr = createXMLHttpRequest();
+        xhr.open(method, url);
+
+        xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+        if (method == 'POST') {
+            xhr.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
+        }
+
+        xhr.onreadystatechange = function() {
+            if (xhr.readyState == 4) {
+                if ('status' in xhr && !/^2|1223/.test(xhr.status)) {
+                    throw new Error('http code '+xhr.status)
+                }
+                if (opts.json) {
+                    var resp = JSON.parse(xhr.responseText)
+                    if (!isObject(resp)) {
+                        throw new Error('ajax: object expected')
+                    }
+                    if (resp.error) {
+                        throw new Error(resp.error)
+                    }
+                    callback(null, resp.response);
+                } else {
+                    callback(null, xhr.responseText);
+                }
+            }
+        };
+
+        xhr.onerror = function(e) {
+            callback(e);
+        };
+
+        xhr.send(method == 'GET' ? null : data);
+
+        return xhr;
+    }
+
+    window.ajax = {
+        get: request.bind(request, 'GET'),
+        post: request.bind(request, 'POST')
+    }
+
+})();
-- 
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