feat: create action

action.yml

@@ -0,0 +1,86 @@
+---
+name: 'Flake Input Updater'
+inputs:
+  base:
+    default: 'main'
+    required: false
+  name:
+    default: 'flake bump bot'
+    required: false
+  email:
+    default: 'bot@nix.flake'
+    required: false
+  title:
+    default: '[bot]: flake bump'
+    required: false
+
+runs:
+  using: "composite"
+  steps:
+    - name: "Configure git"
+      shell: bash
+      run: |
+        echo "Configuring git"
+        git config user.name "${{ inputs.name }}" >> $GITHUB_OUTPUT
+        git config user.email "${{ inputs.email }}" >> $GITHUB_OUTPUT
+    - name: "Create branch"
+      id: clone
+      shell: bash
+      run: |
+        BRANCH="flake-update-$(date +%s)"
+        echo "Creating branch $BRANCH"
+        # git fetch --all
+        git checkout -b "$BRANCH"
+        echo branch=$BRANCH >> $GITHUB_OUTPUT
+    - name: "Check for updates"
+      id: changes
+      shell: bash
+      run: |
+        echo "Checking for flake updates"
+        cp flake.lock test.lock
+        nix flake update --output-lock-file test.lock
+        if ! (diff -q flake.lock test.lock); then
+          echo change=true >> $GITHUB_OUTPUT
+        else
+          echo change=false >> $GITHUB_OUTPUT
+        fi
+    - name: "Push + create PR"
+      shell: bash
+      id: push
+      if: steps.changes.outputs.change == 'true'
+      run: |
+        echo "Creating PR for branch ${{ steps.clone.outputs.branch }}"
+        mv test.lock flake.lock
+        git add flake.lock
+        git commit -m "${{ inputs.title }}"
+        git push --force-with-lease origin "${{ steps.clone.outputs.branch }}"
+
+        RESPONSE=$(curl -X 'POST' \
+          "$GITHUB_SERVER_URL/api/v1/repos/$GITHUB_REPOSITORY/pulls" \
+          -H 'accept: application/json' \
+          -H "Authorization: token $GITHUB_TOKEN" \
+          -H 'Content-type: application/json' \
+          -d '{
+            "base": "${{ inputs.base }}",
+            "head": "${{ steps.clone.outputs.branch }}",
+            "title": "automated flake update"
+          }')
+
+        NUMBER=$(echo $RESPONSE | jq -r '.number')
+        echo "Created PR $NUMBER."
+        echo NUMBER=$NUMBER >> $GITHUB_OUTPUT
+    - name: "Set automerge on PR"
+      shell: bash
+      if: steps.changes.outputs.change == 'true' && steps.push.outputs.number != 'null'
+      run: |
+        RESPONSE=$(curl -X 'POST' \
+          "$GITHUB_SERVER_URL/api/v1/repos/$GITHUB_REPOSITORY/pulls/${{ steps.push.outputs.number }}/merge" \
+          -H 'accept: application/json' \
+          -H "Authorization: token $GITHUB_TOKEN" \
+          -H 'Content-Type: application/json' \
+          -d '{
+            "Do": "merge",
+            "merge_when_checks_succeed": true,
+            "delete_branch_after_merge": true
+          }')
+        echo $RESPONSE