Add Support for Db based migration state persistence.

.gitignore

@@ -2,5 +2,7 @@
 node_modules
 *.sock
 .migrate
+*.iml
+.idea
 
 migrations/

bin/migrate

@@ -1,222 +1,3 @@
 #!/usr/bin/env node
 
-/**
- * Module dependencies.
- */
-
-var migrate = require('../')
-  , join = require('path').join
-  , fs = require('fs')
-  , dateFormat = require('dateformat');
-
-/**
- * Arguments.
- */
-
-var args = process.argv.slice(2);
-
-/**
- * Option defaults.
- */
-
-var options = { args: [] };
-
-/**
- * Current working directory.
- */
-
-var cwd;
-
-/**
- * Usage information.
- */
-
-var usage = [
-    ''
-  , '  Usage: migrate [options] [command]'
-  , ''
-  , '  Options:'
-  , ''
-  , '     -c, --chdir <path>      change the working directory'
-  , '     --state-file <path>     set path to state file (migrations/.migrate)'
-  , '     --template-file <path>  set path to template file to use for new migrations'
-  , '     --date-format <format>  set a date format to use for new migration filenames'
-  , '  Commands:'
-  , ''
-  , '     down   [name]    migrate down till given migration'
-  , '     up     [name]    migrate up till given migration (the default command)'
-  , '     create [title]   create a new migration file with optional [title]'
-  , ''
-].join('\n');
-
-/**
- * Migration template.
- */
-
-var template = [
-    '\'use strict\''
-  , ''
-  , 'exports.up = function(next) {'
-  , '  next();'
-  , '};'
-  , ''
-  , 'exports.down = function(next) {'
-  , '  next();'
-  , '};'
-  , ''
-].join('\n');
-
-// require an argument
-
-function required() {
-  if (args.length) return args.shift();
-  abort(arg + ' requires an argument');
-}
-
-// abort with a message
-
-function abort(msg) {
-  console.error('  %s', msg);
-  process.exit(1);
-}
-
-// parse arguments
-
-var arg;
-while (args.length) {
-  arg = args.shift();
-  switch (arg) {
-    case '-h':
-    case '--help':
-    case 'help':
-      console.log(usage);
-      process.exit();
-      break;
-    case '-c':
-    case '--chdir':
-      process.chdir(cwd = required());
-      break;
-    case '--state-file':
-      options.stateFile = required();
-      break;
-    case '--template-file':
-      template = fs.readFileSync(required());
-      break;
-    case '--date-format':
-      options.dateFormat = required();
-      break;
-    default:
-      if (options.command) {
-        options.args.push(arg);
-      } else {
-        options.command = arg;
-      }
-  }
-}
-
-/**
- * Log a keyed message.
- */
-
-function log(key, msg) {
-  console.log('  \033[90m%s :\033[0m \033[36m%s\033[0m', key, msg);
-}
-
-/**
- * Slugify the given `str`.
- */
-
-function slugify(str) {
-  return str.replace(/\s+/g, '-');
-}
-
-// create ./migrations
-
-try {
-  fs.mkdirSync('migrations', 0774);
-} catch (err) {
-  // ignore
-}
-
-// commands
-
-var commands = {
-
-  /**
-   * up [name]
-   */
-
-  up: function(migrationName){
-    performMigration('up', migrationName);
-  },
-
-  /**
-   * down [name]
-   */
-
-  down: function(migrationName){
-    performMigration('down', migrationName);
-  },
-
-  /**
-   * create [title]
-   */
-
-  create: function(){
-    var curr = Date.now()
-      , title = slugify([].slice.call(arguments).join(' '));
-    if (options.dateFormat) {
-      curr = dateFormat(curr, options.dateFormat);
-    }
-    title = title ? curr + '-' + title : curr;
-    create(title);
-  }
-};
-
-/**
- * Create a migration with the given `name`.
- *
- * @param {String} name
- */
-
-function create(name) {
-  var path = join('migrations', name + '.js');
-  log('create', join(process.cwd(), path));
-  fs.writeFileSync(path, template);
-}
-
-/**
- * Perform a migration in the given `direction`.
- *
- * @param {Number} direction
- */
-
-function performMigration(direction, migrationName) {
-  var state = options.stateFile || join('migrations', '.migrate');
-  var set = migrate.load(state, 'migrations');
-
-  set.on('migration', function(migration, direction){
-    log(direction, migration.title);
-  });
-
-  var migrationPath = migrationName
-    ? join('migrations', migrationName)
-    : migrationName;
-
-  set[direction](migrationName, function (err) {
-    if (err) {
-      log('error', err);
-      process.exit(1);
-    }
-
-    log('migration', 'complete');
-    process.exit(0);
-  });
-}
-
-// invoke command
-
-var command = options.command || 'up';
-if (!(command in commands)) abort('unknown command "' + command + '"');
-command = commands[command];
-command.apply(this, options.args);
+require('./migratecli');