Рефакторинг + добавлено формирование и парсинг параметров в URL

client/share/diffUtils.js

@@ -0,0 +1,143 @@
+const _ = require('lodash');
+
+function getObjDiff(oldObj, newObj, opts = {}) {
+    const {
+        exclude = [],
+        excludeAdd = [],
+        excludeDel = [],
+    } = opts;
+
+    const ex = new Set(exclude);
+    const exAdd = new Set(excludeAdd);
+    const exDel = new Set(excludeDel);
+
+    const makeObjDiff = (oldObj, newObj, keyPath) => {
+        const result = {__isDiff: true, change: {}, add: {}, del: []};
+
+        keyPath = `${keyPath}${keyPath ? '/' : ''}`;
+
+        for (const key of Object.keys(oldObj)) {
+            const kp = `${keyPath}${key}`;
+
+            if (newObj.hasOwnProperty(key)) {
+                if (ex.has(kp))
+                    continue;
+
+                if (!_.isEqual(oldObj[key], newObj[key])) {
+                    if (_.isObject(oldObj[key]) && _.isObject(newObj[key])) {
+                        result.change[key] = makeObjDiff(oldObj[key], newObj[key], kp);
+                    } else {
+                        result.change[key] = _.cloneDeep(newObj[key]);
+                    }
+                }
+            } else {
+                if (exDel.has(kp))
+                    continue;
+                result.del.push(key);
+            }
+        }
+
+        for (const key of Object.keys(newObj)) {
+            const kp = `${keyPath}${key}`;
+            if (exAdd.has(kp))
+                continue;
+
+            if (!oldObj.hasOwnProperty(key)) {
+                result.add[key] = _.cloneDeep(newObj[key]);
+            }
+        }
+
+        return result;
+    }
+
+    return makeObjDiff(oldObj, newObj, '');
+}
+
+function isObjDiff(diff) {
+    return (_.isObject(diff) && diff.__isDiff && diff.change && diff.add && diff.del);
+}
+
+function isEmptyObjDiff(diff) {
+    return (!isObjDiff(diff) ||
+        !(Object.keys(diff.change).length ||
+          Object.keys(diff.add).length ||
+          diff.del.length
+        )
+    );
+}
+
+function isEmptyObjDiffDeep(diff, opts = {}) {
+    if (!isObjDiff(diff))
+        return true;
+
+    const {
+        isApplyChange = true,
+        isApplyAdd = true,
+        isApplyDel = true,
+    } = opts;
+
+    let notEmptyDeep = false;
+    const change = diff.change;
+    for (const key of Object.keys(change)) {
+        if (_.isObject(change[key]))
+            notEmptyDeep |= !isEmptyObjDiffDeep(change[key], opts);
+        else if (isApplyChange)
+            notEmptyDeep = true;
+    }
+
+    return !(
+        notEmptyDeep ||
+        (isApplyAdd && Object.keys(diff.add).length) ||
+        (isApplyDel && diff.del.length)
+    );
+}
+
+function applyObjDiff(obj, diff, opts = {}) {
+    const {
+        isAddChanged = false,
+        isApplyChange = true,
+        isApplyAdd = true,
+        isApplyDel = true,
+    } = opts;
+
+    let result = _.cloneDeep(obj);
+    if (!diff.__isDiff)
+        return result;
+
+    const change = diff.change;
+    for (const key of Object.keys(change)) {
+        if (result.hasOwnProperty(key)) {
+            if (_.isObject(change[key])) {
+                result[key] = applyObjDiff(result[key], change[key], opts);
+            } else {
+                if (isApplyChange)
+                    result[key] = _.cloneDeep(change[key]);
+            }
+        } else if (isAddChanged) {
+            result[key] = _.cloneDeep(change[key]);
+        }
+    }
+
+    if (isApplyAdd) {
+        for (const key of Object.keys(diff.add)) {
+            result[key] = _.cloneDeep(diff.add[key]);
+        }
+    }
+
+    if (isApplyDel && diff.del.length) {
+        for (const key of diff.del) {
+            delete result[key];
+        }
+        if (_.isArray(result))
+            result = result.filter(v => v);
+    }
+
+    return result;
+}
+
+module.exports = {
+    getObjDiff,
+    isObjDiff,
+    isEmptyObjDiff,
+    applyObjDiff,
+}