From 7a39bb778193df1ffebc553260c7ae7619b05bfd Mon Sep 17 00:00:00 2001
From: Mikeal Rogers <mikeal.rogers@gmail.com>
Date: Thu, 23 May 2019 18:43:01 +0000
Subject: [PATCH] feat: get full diff between releases

---
 merge-release-run.js | 59 ++++++++++++++++++++++++++++++++------------
 package.json         |  2 ++
 2 files changed, 45 insertions(+), 16 deletions(-)

diff --git a/merge-release-run.js b/merge-release-run.js
index 02c38d4..da7e23a 100644
--- a/merge-release-run.js
+++ b/merge-release-run.js
@@ -1,27 +1,54 @@
 #!/usr/bin/env node
 const fs = require('fs')
 const path = require('path')
+const bent = require('bent')
+const git = require('simple-git')()
 const { execSync } = require('child_process')
+const { promisify } = require('util')
+
+const getlog = promisify(git.log.bind(git))
+
+const get = bent('json', 'https://registry.npmjs.org/')
 
 const event = JSON.parse(fs.readFileSync('/github/workflow/event.json').toString())
 
-let messages = event.commits.map(commit => commit.message)
-
-let version = 'patch'
-if (messages.map(message => message.includes('BREAKING CHANGE')).includes(true)) {
-  version = 'major'
-} else if (messages.map(message => message.toLowerCase().startsWith('feat')).includes(true)) {
-  version = 'minor'
-}
-
 let pkg = require(path.join(process.cwd(), 'package.json'))
 
-pkg.gitsha = process.env.GITHUB_SHA
+const run = async () => {
+  let latest
+  try {
+    latest = await get(pkg.name + '/latest')
+  } catch (e) {
+    // unpublished
+  }
 
-fs.writeFileSync(path.join(process.cwd(), 'package.json'), Buffer.from(JSON.stringify(pkg)))
+  let messages
 
-let current = execSync(`npm view ${pkg.name} version`).toString()
-process.stdout.write(execSync(`npm version --allow-same-version=true --git-tag-version=false ${current} `))
-let newVersion = execSync(`npm version --git-tag-version=false ${version}`).toString()
-console.log(newVersion)
-process.stdout.write(execSync(`npm publish --access=public`))
+  if (latest) {
+    if (latest.gitHead === process.env.GITHUB_SHA) return console.log('SHA matches latest release, skipping.')
+    if (latest.gitHead) {
+      let logs = await getlog({ from: latest.gitHead, to: process.env.GITHUB_SHA })
+      messages = logs.all.map(r => r.message + '\n' + r.body)
+      // g.log({from: 'f0002b6c9710f818b9385aafeb1bde994fe3b370', to: '53a92ca2d1ea3c55977f44d93e48e31e37d0bc69'}, (err, l) => console.log(l.all.map(r => r.message + '\n' + r.body)))
+    } else {
+      latest = null
+    }
+  }
+  if (!latest) {
+    messages = event.commits.map(commit => commit.message + '\n' + commit.body)
+  }
+
+  let version = 'patch'
+  if (messages.map(message => message.includes('BREAKING CHANGE')).includes(true)) {
+    version = 'major'
+  } else if (messages.map(message => message.toLowerCase().startsWith('feat')).includes(true)) {
+    version = 'minor'
+  }
+
+  let current = execSync(`npm view ${pkg.name} version`).toString()
+  process.stdout.write(execSync(`npm version --allow-same-version=true --git-tag-version=false ${current} `))
+  let newVersion = execSync(`npm version --git-tag-version=false ${version}`).toString()
+  console.log(newVersion)
+  process.stdout.write(execSync(`npm publish --access=public`))
+}
+run()
diff --git a/package.json b/package.json
index 22c1495..daec242 100644
--- a/package.json
+++ b/package.json
@@ -20,6 +20,8 @@
   },
   "homepage": "https://github.com/mikeal/auto-release#readme",
   "dependencies": {
+    "bent": "^1.5.13",
+    "simple-git": "^1.113.0",
     "yargs": "^12.0.5"
   },
   "devDependencies": {