Fixing several bugs and adding very basic rule support

src/database/rules.ts

@@ -57,7 +57,7 @@ export class Rules {
       this.rules = analyze(parsed);
    }
 
-   hasPermission(path: string[], session: Session) {
+   hasPermission(path: string[], session: Session): { read: boolean, write: boolean } {
       let read = this.rules[".read"] || false;
       let write = this.rules[".write"] || false;
 
@@ -65,7 +65,7 @@ export class Rules {
 
       for (let segment of path) {
          rules = rules[segment];
-         if (rules[segment]) {
+         if (rules) {
             if (rules[".read"]) {
                read = rules[".read"]
             }
@@ -79,8 +79,8 @@ export class Rules {
       }
 
       return {
-         read,
-         write
+         read: read as boolean,
+         write: write as boolean
       }
    }