add migrations

migrations/004-transactions-reload.js

@@ -0,0 +1,46 @@
+'use strict';
+
+var db = require('./db');
+
+exports.up = function(next){
+  var sqls = [
+    'ALTER TABLE transactions DROP IF EXISTS completed',
+    'ALTER TABLE transactions DROP CONSTRAINT transactions_pkey',
+    'ALTER TABLE transactions RENAME id TO session_id',
+    'ALTER TABLE transactions ADD COLUMN id SERIAL',
+    'UPDATE transactions SET id = DEFAULT',
+    'ALTER TABLE transactions ADD PRIMARY KEY (id)',
+    'CREATE INDEX ON transactions (session_id)',
+    'ALTER TABLE transactions ADD CONSTRAINT transactions_session_status UNIQUE (session_id,status)',
+
+    'CREATE TABLE digital_transactions ( ' +
+    'id serial PRIMARY KEY, ' +
+    'transaction_id integer REFERENCES transactions(id), ' +
+    'status text, ' +
+    'incoming boolean, ' +
+    'tx_hash text NULL, ' +
+    'error text NULL, ' +
+    'created timestamp NOT NULL DEFAULT now(), ' +
+    'CONSTRAINT digital_transactions_status_txid UNIQUE (status, transaction_id) ' +
+    ')',
+
+    'CREATE TABLE dispenses ( ' +
+    'id serial PRIMARY KEY, ' +
+    'transaction_id integer UNIQUE REFERENCES transactions(id), ' +
+    'dispense1 integer NOT NULL, ' +
+    'reject1 integer NOT NULL, ' +
+    'count1 integer NOT NULL, ' +
+    'dispense2 integer NOT NULL, ' +
+    'reject2 integer NOT NULL, ' +
+    'count2 integer NOT NULL, ' +
+    'refill boolean NOT NULL, ' +
+    'error text NULL, ' +
+    'created timestamp NOT NULL DEFAULT now() ' +
+    ')'
+  ];
+  db.multi(sqls, next);
+};
+
+exports.down = function(next){
+  next();
+};