biot-core/lib/sqlite_migrations.js

```sh $ npm install $ cd examples $ node balance.js ```

const libToEs6 = require('./toEs6');

const CURRENT_VERSION = 2;

async function migrateDb() {
	let arrTables = ['channels', 'address_passes', 'biot_peer_addresses', 'biot_params'];
	let rows = await libToEs6.dbQuery("SELECT name FROM sqlite_master WHERE type='table' AND name IN (?)", [arrTables]);
	
	if (rows.length !== arrTables.length) {
		let arrTableNames = rows.map(row => row.name);
		if (arrTableNames.indexOf('channels') === -1) {
			await libToEs6.dbQuery("CREATE TABLE channels (id CHAR(44) NOT NULL, walletId CHAR(44) NOT NULL, address CHAR(32) NULL, peerDeviceAddress CHAR(33) NOT NULL,\n\
				peerAddress CHAR(32) NULL, myAmount BIGINT NOT NULL, peerAmount BIGINT NOT NULL, age SMALLINT NOT NULL, step VARCHAR(255) NOT NULL,\n\
				myAddress CHAR(32) NULL, objMyContract TEXT NULL, objPeerContract TEXT NULL, waitingUnit CHAR(44) NULL, \n\
				myUnilateralAddress CHAR(32) NULL, peerUnilateralAddress CHAR(32) NULL, \n\
				myDestinationAddress CHAR(32) NULL, peerDestinationAddress CHAR(32) NULL, \n\
				joint TEXT NULL, creation_date TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, change_date TIMESTAMP DEFAULT NULL, PRIMARY KEY(id))");
			await libToEs6.dbQuery("CREATE UNIQUE INDEX IF NOT EXISTS channel_id ON channels (id)");
			console.error('Create table channels and index');
		}
		if (arrTableNames.indexOf('address_passes') === -1) {
			await libToEs6.dbQuery("CREATE TABLE address_passes(id CHAR(44) NOT NULL, address CHAR(32) NOT NULL, pass CHAR(20) NULL, hash CHAR(44),\n\
				PRIMARY KEY(id, address))");
			await libToEs6.dbQuery("CREATE UNIQUE INDEX IF NOT EXISTS _address_pass ON address_passes (id, address)");
			console.error('Create table address_passes');
		}
		if (arrTableNames.indexOf('biot_peer_addresses') === -1) {
			await libToEs6.dbQuery("CREATE TABLE biot_peer_addresses(address CHAR(32) NOT NULL, device_address CHAR(33) NOT NULL, definition TEXT NOT NULL,\n\
				PRIMARY KEY(address, device_address))");
			await libToEs6.dbQuery("CREATE UNIQUE INDEX IF NOT EXISTS _peer_addresses ON biot_peer_addresses (address)");
			console.error('Create table biot_peer_addresses');
		}
		if (arrTableNames.indexOf('biot_params') === -1) {
			await libToEs6.dbQuery("CREATE TABLE biot_params (version INT DEFAULT 0, PRIMARY KEY(version))");
			await libToEs6.dbQuery("INSERT INTO biot_params (version) VALUES (0)");
			console.error('Create table biot_params');
		}
	}
	
	let rowsParams = await libToEs6.dbQuery("SELECT version FROM biot_params");
	let version = rowsParams[0].version;
	
	if (version < CURRENT_VERSION) {
		if (version < 1) {
			await libToEs6.dbQuery("CREATE TABLE oneSideChannels (id CHAR(44) NOT NULL, walletId CHAR(44) NOT NULL, channelAddress CHAR(32) NULL,\n\ \
				peerDeviceAddress CHAR(33) NOT NULL, iInitiator SMALLINT NOT NULL,\n\
				peerAddress CHAR(32) NULL, amount BIGINT NOT NULL, peerAmount BIGINT NOT NULL, age SMALLINT NOT NULL, step VARCHAR(255) NOT NULL,\n\
				myAddress CHAR(32) NULL, objMyContract TEXT NULL, objPeerContract TEXT NULL, waitingUnit CHAR(44) NULL, \n\
				myUnilateralAddress CHAR(32) NULL, peerUnilateralAddress CHAR(32) NULL, \n\
				myDestinationAddress CHAR(32) NULL, peerDestinationAddress CHAR(32) NULL, \n\
				joint TEXT NULL, creation_date TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP, change_date TIMESTAMP DEFAULT NULL, PRIMARY KEY(id))");
			await libToEs6.dbQuery("CREATE UNIQUE INDEX IF NOT EXISTS oneSideChannel_id ON oneSideChannels (id)");
			console.error('Create table oneSideChannels');
		}
		
		if (version < 2) {
			await libToEs6.dbQuery("CREATE TABLE profiles (\n\
				attester CHAR(32) NOT NULL,\n\n\
				address CHAR(32) NOT NULL,\n\
				unit CHAR(44) NOT NULL,\n\
				object TEXT NOT NULL,\n\
				PRIMARY KEY(attester,address))");
			console.error('Create table profiles');
		}
		
		await libToEs6.dbQuery("UPDATE biot_params SET version = ?", [CURRENT_VERSION]);
	}
	
	return true;
}

exports.migrateDb = migrateDb;