Added tree.

src/node/utils/Settings.ts

@@ -29,6 +29,7 @@
 
 import {MapArrayType} from "../types/MapType";
 import {SettingsNode, SettingsTree} from "./SettingsTree";
+import {coerce} from "semver";
 
 const absolutePaths = require('./AbsolutePaths');
 const deepEqual = require('fast-deep-equal/es6');
@@ -53,10 +54,12 @@ const nonSettings = [
 
 // This is a function to make it easy to create a new instance. It is important to not reuse a
 // config object after passing it to log4js.configure() because that method mutates the object. :(
-const defaultLogConfig = (level:string) => ({appenders: {console: {type: 'console'}},
+const defaultLogConfig = (level: string) => ({
+    appenders: {console: {type: 'console'}},
     categories: {
         default: {appenders: ['console'], level},
-  }});
+    }
+});
 const defaultLogLevel = 'INFO';
 
 const initLogging = (config: any) => {
@@ -557,11 +560,16 @@ const coerceValue = (stringValue:string) => {
     }
 
     switch (stringValue) {
-    case 'true': return true;
-    case 'false': return false;
-    case 'undefined': return undefined;
-    case 'null': return null;
-    default: return stringValue;
+        case 'true':
+            return true;
+        case 'false':
+            return false;
+        case 'undefined':
+            return undefined;
+        case 'null':
+            return null;
+        default:
+            return stringValue;
     }
 };
 
@@ -715,21 +723,12 @@ const lookupEnvironmentVariables = (obj: MapArrayType<any>) => {
         currentNode.addChild(pathToKey, value!)
     })
 
-  console.log("Root is", JSON.stringify(root, (k,v)=>{
-    if(v instanceof Map) {
-      return {
-        dataType: 'Map',
-        value: Array.from(v.entries()), // or with spread: value: [...value]
-      };
-    } else {
-      return v;
-    }
-  }))
-
+    console.log(root.collectFromLeafsUpwards())
     obj = Object.assign(obj, envVars)
     return obj;
 };
 
+
 /**
  * - reads the JSON configuration file settingsFilename from disk
  * - strips the comments
@@ -864,7 +863,8 @@ exports.reloadSettings = () => {
         try {
             exports.sessionKey = fs.readFileSync(sessionkeyFilename, 'utf8');
             logger.info(`Session key loaded from: ${sessionkeyFilename}`);
-    } catch (err) { /* ignored */ }
+        } catch (err) { /* ignored */
+        }
         const keyRotationEnabled = exports.cookie.keyRotationInterval && exports.cookie.sessionLifetime;
         if (!exports.sessionKey && !keyRotationEnabled) {
             logger.info(

src/node/utils/SettingsTree.ts

@@ -1,3 +1,5 @@
+import {MapArrayType} from "../types/MapType";
+
 export class SettingsTree {
     private children: Map<string, SettingsNode>;
     constructor() {
@@ -24,46 +26,87 @@ export class SettingsTree {
 
 export class SettingsNode {
     private readonly key: string;
-    private value: string|undefined;
-    private children: Map<string, SettingsNode>;
+    private value:  string | number | boolean | null | undefined;
+    private children: MapArrayType<SettingsNode>;
 
-    constructor(key: string, value?: string) {
+    constructor(key: string, value?:  string | number | boolean | null | undefined) {
         this.key = key;
         this.value = value;
-        this.children = new Map();
+        this.children = {}
     }
 
-    public addChild(key: string[], value?: string) {
-        let depth = 0
-
-        while (depth < key.length) {
-            const k = key[depth];
-            const slicedKey = key.slice(depth + 1)
-            depth++;
-            if(this.key === k) {
-                console.log("same key")
+    public addChild(path: string[], value: string) {
+        let currentNode:SettingsNode = this;
+        for (let i = 0; i < path.length; i++) {
+            const key = path[i];
+            /*
+                Skip the current node if the key is the same as the current node's key
+             */
+            if (key === this.key ) {
                 continue
             }
-            if (this.children.has(k)) {
-                console.log("has child", k)
-                this.children.get(k)!.addChild(slicedKey, value);
+            /*
+                If the current node does not have a child with the key, create a new node with the key
+             */
+            if (!currentNode.hasChild(key)) {
+                currentNode = currentNode.children[key] = new SettingsNode(key, this.coerceValue(value));
             } else {
-                const newNode = new SettingsNode(k);
-                this.children.set(k, newNode);
-                if(slicedKey.length > 0)
-                    newNode.addChild(slicedKey, value);
-                else
-                    newNode.value = value;
-                this.children.get(k)!.addChild(slicedKey, undefined);
+                /*
+                 Else move to the child node
+                 */
+                currentNode = currentNode.getChild(key);
             }
         }
     }
 
+
+    public collectFromLeafsUpwards() {
+        let collected:MapArrayType<any> = {};
+        for (const key in this.children) {
+            const child = this.children[key];
+            if (child.hasChildren()) {
+                collected[key] = child.collectFromLeafsUpwards();
+            } else {
+                collected[key] = child.value;
+            }
+        }
+        return collected;
+    }
+
+    coerceValue = (stringValue: string) => {
+        // cooked from https://stackoverflow.com/questions/175739/built-in-way-in-javascript-to-check-if-a-string-is-a-valid-number
+        // @ts-ignore
+        const isNumeric = !isNaN(stringValue) && !isNaN(parseFloat(stringValue) && isFinite(stringValue));
+
+        if (isNumeric) {
+            // detected numeric string. Coerce to a number
+
+            return +stringValue;
+        }
+
+        switch (stringValue) {
+            case 'true':
+                return true;
+            case 'false':
+                return false;
+            case 'undefined':
+                return undefined;
+            case 'null':
+                return null;
+            default:
+                return stringValue;
+        }
+    };
+
+    public hasChildren() {
+        return Object.keys(this.children).length > 0;
+    }
+
     public getChild(key: string) {
-        return this.children.get(key);
+        return this.children[key];
     }
 
     public hasChild(key: string) {
-        return this.children.has(key);
+        return this.children[key] !== undefined;
     }
 }