2 files changed, 96 insertions, 0 deletions
diff --git a/development/run-version-bump.js b/development/run-version-bump.js
new file mode 100644
index 000000000..e06c00db3
--- /dev/null
+++ b/development/run-version-bump.js
@@ -0,0 +1,44 @@
+const { promisify } = require('util')
+const fs = require('fs')
+const readFile = promisify(fs.readFile)
+const writeFile = promisify(fs.writeFile)
+const path = require('path')
+const changelogPath = path.join(__dirname, '..', 'CHANGELOG.md')
+const manifestPath = path.join(__dirname, '..', 'app', 'manifest.json')
+const manifest = require('../app/manifest.json')
+const versionBump = require('./version-bump')
+
+const bumpType = normalizeType(process.argv[2])
+
+
+readFile(changelogPath)
+.then(async (changeBuffer) => {
+  const changelog = changeBuffer.toString()
+
+  const newData = await versionBump(bumpType, changelog, manifest)
+
+  const manifestString = JSON.stringify(newData.manifest, null, 2)
+
+  await writeFile(changelogPath, newData.changelog)
+  await writeFile(manifestPath, manifestString)
+
+  return newData.version
+})
+.then((version) => console.log(`Bumped ${bumpType} to version ${version}`))
+.catch(console.error)
+
+
+function normalizeType (userInput) {
+  const err = new Error('First option must be a type (major, minor, or patch)')
+  if (!userInput || typeof userInput !== 'string') {
+    throw err
+  }
+
+  const lower = userInput.toLowerCase()
+
+  if (lower !== 'major' && lower !== 'minor' && lower !== 'patch') {
+    throw err
+  }
+
+  return lower
+}
diff --git a/development/version-bump.js b/development/version-bump.js
new file mode 100644
index 000000000..bedf87c01
--- /dev/null
+++ b/development/version-bump.js
@@ -0,0 +1,52 @@
+const clone = require('clone')
+
+async function versionBump(bumpType, changelog, oldManifest) {
+  const manifest = clone(oldManifest)
+  const newVersion = newVersionFrom(manifest, bumpType)
+
+  manifest.version = newVersion
+  const date = (new Date()).toDateString()
+
+  const logHeader = `\n## ${newVersion} ${date}`
+  const logLines = changelog.split('\n')
+  for (let i = 0; i < logLines.length; i++) {
+    if (logLines[i].includes('Current Master')) {
+      logLines.splice(i + 1, 0, logHeader)
+      break
+    }
+  }
+
+  return {
+    version: newVersion,
+    manifest: manifest,
+    changelog: logLines.join('\n')
+  }
+}
+
+function newVersionFrom (manifest, bumpType) {
+  const string = manifest.version
+  let segments = string.split('.').map((str) => parseInt(str))
+
+  switch (bumpType) {
+    case 'major':
+      segments[0] += 1
+      segments[1] = 0
+      segments[2] = 0
+      break
+    case 'minor':
+      segments[1] += 1
+      segments[2] = 0
+      break
+    case 'patch':
+      segments[2] += 1
+      break
+  }
+
+  return segments.map(String).join('.')
+}
+
+function bumpManifest (manifest, bumpType) {
+
+}
+
+module.exports = versionBump