first commit

plugins/sqlite/scanner.js

@@ -0,0 +1,64 @@
+const _ = require('lodash');
+const async = require('async');
+const fs = require('fs');
+
+const util = require('../../core/util.js');
+const config = util.getConfig();
+const dirs = util.dirs();
+
+const sqlite3 = require('sqlite3');
+
+// todo: rewrite with generators or async/await..
+module.exports = done => {
+  const dbDirectory = dirs.gekko + config.sqlite.dataDirectory
+
+  if(!fs.existsSync(dbDirectory))
+    return done(null, []);
+
+  const files = fs.readdirSync(dbDirectory);
+
+  const dbs = files
+    .filter(f => {
+      let parts = f.split('.');
+      if(_.last(parts) === 'db')
+        return true;
+    })
+
+  if(!_.size(dbs))
+    return done(null, []);
+
+  let markets = [];
+
+  async.each(dbs, (db, next) => {
+
+    const exchange = _.first(db.split('_'));
+    const handle = new sqlite3.Database(dbDirectory + '/' + db, sqlite3.OPEN_READONLY, err => {
+      if(err)
+        return next(err);
+
+      handle.all(`SELECT name FROM sqlite_master WHERE type='table'`, (err, tables) => {
+        if(err)
+          return next(err);
+        
+        _.each(tables, table => {
+          let parts = table.name.split('_');
+          let first = parts.shift();
+          if(first === 'candles') 
+            markets.push({
+              exchange: exchange,
+              currency: _.first(parts),
+              asset: _.last(parts)
+            });
+        });
+
+        next();
+      });
+    });
+
+
+  },
+  // got all tables!
+  err => {
+    done(err, markets);
+  });
+}