1 files changed, 39 insertions, 0 deletions
diff --git a/src/shared/settings/Blacklist.ts b/src/shared/settings/Blacklist.ts
new file mode 100644
index 0000000..a95b606
--- /dev/null
+++ b/src/shared/settings/Blacklist.ts
@@ -0,0 +1,39 @@
+export type BlacklistJSON = string[];
+
+const fromWildcard = (pattern: string): RegExp => {
+  let regexStr = '^' + pattern.replace(/\*/g, '.*') + '$';
+  return new RegExp(regexStr);
+};
+
+export default class Blacklist {
+  constructor(
+    private blacklist: string[],
+  ) {
+  }
+
+  static fromJSON(json: any): Blacklist {
+    if (!Array.isArray(json)) {
+      throw new TypeError(`"blacklist" is not an array of string`);
+    }
+    for (let x of json) {
+      if (typeof x !== 'string') {
+        throw new TypeError(`"blacklist" is not an array of string`);
+      }
+    }
+    return new Blacklist(json);
+  }
+
+  toJSON(): BlacklistJSON {
+    return this.blacklist;
+  }
+
+  includes(url: string): boolean {
+    let u = new URL(url);
+    return this.blacklist.some((item) => {
+      if (!item.includes('/')) {
+        return fromWildcard(item).test(u.host);
+      }
+      return fromWildcard(item).test(u.host + u.pathname);
+    });
+  }
+}