close #62 Add command to create a new migration file

bin/migrate_make.js

@@ -0,0 +1,37 @@
+#!/usr/bin/env node
+
+let debug
+try {
+  debug = require('debug')('migrate:make')
+} catch (e) {
+  debug = console.log
+}
+
+const fs = require('fs')
+const path = require('path')
+
+let file = process.argv[2]
+if (!file) {
+  debug('name for the migration needs to be given as argument')
+  process.exit(1)
+}
+if (!file.includes('.')) {
+  file += '.sql'
+}
+if (!file.endsWith('.js') && !file.endsWith('.sql')) {
+  debug('file ending needs to be ".js" or ".sql" (default if no file ending is given)')
+  process.exit(1)
+}
+
+const currentUnixTimestamp = Math.floor(Date.now() / 1000)
+file = `${currentUnixTimestamp}_${file}`
+
+const directory = path.join(process.cwd(), 'migrations')
+if (file.endsWith('.js')) {
+  fs.copyFileSync(path.join(__dirname, 'templates/migration.js'), path.join(directory, file))
+}
+if (file.endsWith('.sql')) {
+  fs.copyFileSync(path.join(__dirname, 'templates/migration.sql'), path.join(directory, file))
+}
+
+debug(`file "${file}" is created in the migrations directory`)

bin/templates/migration.js

@@ -0,0 +1,3 @@
+module.exports = async sql => sql.query(
+  sql``
+)

package.json

@@ -16,7 +16,8 @@
     "access": "public"
   },
   "bin": {
-    "migrate": "./bin/migrate.js"
+    "migrate": "./bin/migrate.js",
+    "migrate:make": "./bin/migrate_make.js"
   },
   "scripts": {
     "lint": "standard",
@@ -71,6 +72,9 @@
       "bin/",
       "src/"
     ],
+    "exclude": [
+      "bin/templates/"
+    ],
     "all": true,
     "reporter": [
       "text",