Add clear script to empty the database

package.json

@@ -20,6 +20,7 @@
     "get-folder-size": "^2.0.1",
     "netflux-websocket": "^0.1.20",
     "nthen": "0.1.8",
+    "prompt-confirm": "^2.0.4",
     "pull-stream": "^3.6.1",
     "saferphore": "0.0.1",
     "sortify": "^1.0.4",
@@ -51,6 +52,7 @@
     "test-rpc": "cd scripts/tests && node test-rpc",
     "evict-inactive": "node scripts/evict-inactive.js",
     "build": "node scripts/build.js",
+    "clear": "node scripts/clear.js",
     "install": "node scripts/install.js"
   }
 }

scripts/clear.js

@@ -0,0 +1,30 @@
+var prompt = require('prompt-confirm');
+const p = new prompt('Are you sure? This will permanently delete all existing data on your instance.');
+
+const nThen = require("nthen");
+const Fs = require("fs");
+const Path = require("path");
+
+var config = require("../lib/load-config");
+var Hash = require('../www/common/common-hash');
+var Env = require("../lib/env").create(config);
+Env.Log = { error: console.log };
+
+var keyOrDefaultString = function (key, def) {
+    return Path.resolve(typeof(config[key]) === 'string'? config[key]: def);
+};
+var paths = Env.paths;
+p.ask(function (answer) {
+    if (!answer) {
+        console.log('Abort');
+        return;
+    }
+    console.log('Deleting all data...');
+    var n = nThen;
+    Object.values(paths).forEach(function (path) {
+        console.log(`Deleting ${path}`);
+        fs.rmSync(path, { recursive: true, force: true });
+        console.log('Deleted');
+    });
+    console.log('Success');
+});