From 71bbae5cb02a55926150a4cf74d3c333b8127342 Mon Sep 17 00:00:00 2001
From: William Hilton <wmhilton@gmail.com>
Date: Fri, 6 Apr 2018 23:52:50 -0400
Subject: [PATCH] BREAKING CHANGE: Perform 'push' operations on a temporary
 copy of the repo. Add settings 'root' and 'route'. (#4)

---
 README.md     | 13 ++++++++++++-
 middleware.js | 45 ++++++++++++++++++++++++++++++++-------------
 package.json  |  1 +
 3 files changed, 45 insertions(+), 14 deletions(-)

diff --git a/README.md b/README.md
index 8b0530f..9a2ff4e 100644
--- a/README.md
+++ b/README.md
@@ -13,9 +13,13 @@ In your `karma.config.js`, add:
 
 ```
     beforeMiddleware: ['git-http-server'],
+    gitHttpServer: {
+      root: '__tests__/__fixtures__',
+      route: 'git-server'
+    },
 ```
 
-Then in your JS code, you can reference git repos on disk via `http://localhost:9876/path/to/repo.git`.
+Then in your JS code, you can reference git repos on disk via `http://localhost:9876/git-server/name-of-repo.git`.
 
 This is useful for testing `isomorphic-git` and applications built using it.
 
@@ -25,8 +29,15 @@ See <https://github.com/isomorphic-git/isomorphic-git/tree/master/__tests__>
 
 ## Dependencies
 
+- [fixturez](https://github.com/thejameskyle/fixturez): Easily create and maintain test fixtures in the file system
 - [git-http-backend](https://github.com/substack/git-http-backend): serve a git repository over http
 
 ## License
 
 MIT
+
+## Changelog
+
+1.0.0 - Initial release
+
+2.0.0 - Copy repo on push (so repo stays untouched)
diff --git a/middleware.js b/middleware.js
index 32846a0..0bc680f 100644
--- a/middleware.js
+++ b/middleware.js
@@ -2,22 +2,37 @@ var spawn = require('child_process').spawn;
 var path = require('path').posix;
 var url = require('url');
 var backend = require('git-http-backend');
+var fixturez = require('fixturez');
 
-function getGitDir (req) {
-  var u = url.parse(req.url)
-  if (req.method === 'GET' && u.pathname.endsWith('/info/refs')) {
-    return u.pathname.replace(/\/info\/refs$/, '').replace(/^\//, '')
-  }
-  if (req.method === 'POST' && req.headers['content-type'] === 'application/x-git-upload-pack-request') {
-    return u.pathname.replace(/\/git-upload-pack$/, '').replace(/^\//, '')
-  }
-  if (req.method === 'POST' && req.headers['content-type'] === 'application/x-git-receive-pack-request') {
-    return u.pathname.replace(/\/git-receive-pack$/, '').replace(/^\//, '')
+function factory (config) {
+  if (!config.root) throw new Error('Missing required "gitHttpServer.root" config option')
+  if (!config.route) throw new Error('Missing required "gitHttpServer.route" config option')
+  if (!config.route.startsWith('/')) throw new Error('"gitHttpServer.route" must start with a "/"')
+  // TODO: Make this configurable in karma.conf.js
+  var f = fixturez(config.root, {root: process.cwd()})
+
+  function getGitDir (req) {
+    var u = url.parse(req.url)
+    if (u.pathname.startsWith(config.route)) {
+      if (req.method === 'GET' && u.pathname.endsWith('/info/refs')) {
+        let gitdir = u.pathname.replace(config.route, '').replace(/\/info\/refs$/, '').replace(/^\//, '')
+        let fixtureName = path.basename(gitdir)
+        return f.find(fixtureName)
+      }
+      if (req.method === 'POST' && req.headers['content-type'] === 'application/x-git-upload-pack-request') {
+        let gitdir = u.pathname.replace(config.route, '').replace(/\/git-upload-pack$/, '').replace(/^\//, '')
+        let fixtureName = path.basename(gitdir)
+        return f.find(fixtureName)
+      }
+      if (req.method === 'POST' && req.headers['content-type'] === 'application/x-git-receive-pack-request') {
+        let gitdir = u.pathname.replace(config.route, '').replace(/\/git-receive-pack$/, '').replace(/^\//, '')
+        let fixtureName = path.basename(gitdir)
+        return f.copy(fixtureName)
+      }
+    }
+    return null
   }
-  return null
-}
 
-module.exports = function factory() {
   return function middleware (req, res, next) {
     var gitdir = getGitDir(req);
     if (gitdir == null) return next();
@@ -36,3 +51,7 @@ module.exports = function factory() {
     })).pipe(res);
   }
 }
+
+factory.$inject = ['config.gitHttpServer']
+
+module.exports = factory
\ No newline at end of file
diff --git a/package.json b/package.json
index e7225e4..4b69e66 100644
--- a/package.json
+++ b/package.json
@@ -25,6 +25,7 @@
   },
   "homepage": "https://github.com/isomorphic-git/karma-git-http-server-middleware#readme",
   "dependencies": {
+    "fixturez": "^1.1.0",
     "git-http-backend": "^1.0.2"
   },
   "devDependencies": {