From d6f353d7bcfcc0f7dd5972f556dba310ecc1af22 Mon Sep 17 00:00:00 2001
From: Yakko Majuri <38760734+yakkomajuri@users.noreply.github.com>
Date: Tue, 16 Mar 2021 18:08:32 +0000
Subject: [PATCH] Add auto redirect for changed file names (#1094)

* rename

* rename 2

* Add auto redirect for changed file names

* convert into one action

* fixes

* attempted fix

* Add redirects

* minor fixes

* updates

* Revert "rename"

This reverts commit 147ea3eab1b20af48267e521fa52cc4ac91aa4ba.

* Revert "rename 2"

This reverts commit 69c6c4a4be2051cc6db37eca441f72a5abfb44eb.

* update netlify config

* update script

Co-authored-by: PostHog <hey@posthog.com>
---
 .../workflows/{spellcheck.yml => checks.yml}  | 12 +++++--
 package.json                                  |  2 +-
 contributors.py => scripts/contributors.py    |  0
 mdxImportGen.js => scripts/mdxImportGen.js    |  0
 scripts/safe_rename.py                        | 31 +++++++++++++++++++
 5 files changed, 42 insertions(+), 3 deletions(-)
 rename .github/workflows/{spellcheck.yml => checks.yml} (72%)
 rename contributors.py => scripts/contributors.py (100%)
 rename mdxImportGen.js => scripts/mdxImportGen.js (100%)
 create mode 100644 scripts/safe_rename.py

diff --git a/.github/workflows/spellcheck.yml b/.github/workflows/checks.yml
similarity index 72%
rename from .github/workflows/spellcheck.yml
rename to .github/workflows/checks.yml
index 6f16e465a..c26ac179c 100644
--- a/.github/workflows/spellcheck.yml
+++ b/.github/workflows/checks.yml
@@ -1,11 +1,11 @@
-name: Spell Checker
+name: Standard Checks
 
 on:
     - pull_request
 
 jobs:
     spell-check:
-        name: Spell Checker
+        name: Standard Checks
         runs-on: ubuntu-latest
         if: github.event.pull_request.head.repo.full_name == github.repository
 
@@ -31,3 +31,11 @@ jobs:
                   git config user.email hey@posthog.com
                   git add .
                   [ "$(git status -s)" = "" ] && exit 0 || git commit -m "Fix typos" && git push
+
+            - name: Add safe redirects
+              run: |
+                  git fetch origin master:master
+                  export PR_DIFF=$(git diff master)
+                  python3 ./scripts/safe_rename.py
+                  git add .
+                  [ "$(git status -s)" = "" ] && exit 0 || git commit -m "Add redirects" && git push
diff --git a/package.json b/package.json
index 7cf42365b..d54407832 100644
--- a/package.json
+++ b/package.json
@@ -86,7 +86,7 @@
     },
     "husky": {
         "hooks": {
-            "pre-commit": "node mdxImportGen && git add src/mdxGlobalComponents.js && lint-staged"
+            "pre-commit": "node ./scripts/mdxImportGen && git add src/mdxGlobalComponents.js && lint-staged"
         }
     },
     "lint-staged": {
diff --git a/contributors.py b/scripts/contributors.py
similarity index 100%
rename from contributors.py
rename to scripts/contributors.py
diff --git a/mdxImportGen.js b/scripts/mdxImportGen.js
similarity index 100%
rename from mdxImportGen.js
rename to scripts/mdxImportGen.js
diff --git a/scripts/safe_rename.py b/scripts/safe_rename.py
new file mode 100644
index 000000000..db87d7391
--- /dev/null
+++ b/scripts/safe_rename.py
@@ -0,0 +1,31 @@
+import re
+import os
+
+git_diff = os.environ['PR_DIFF']
+
+rename_from_regex = r'rename from contents(.*).md'
+rename_to_regex = r'rename to contents(.*).md'
+
+
+from_paths = re.findall(rename_from_regex, git_diff)
+to_paths = re.findall(rename_to_regex, git_diff)
+
+redirect_text = '''
+
+[[redirects]]
+    from = "{}"
+    to = "{}"
+'''
+
+if len(from_paths) > 0 and len(from_paths) == len(to_paths):
+    with open("./netlify.toml", "r") as netlify_config:
+        netlify_config_text = netlify_config.read()
+    
+    new_redirects = ''
+
+    for i in range(len(from_paths)-1):
+        if from_paths[i] not in netlify_config_text:
+            new_redirects += redirect_text.format(from_paths[i], to_paths[i])
+    
+    with open("./netlify.toml", "a") as netlify_config:
+        netlify_config.write(new_redirects)
\ No newline at end of file