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>

.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

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": {

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)