From 243cd29187ff1f48d8c407f2589303808e449b7f Mon Sep 17 00:00:00 2001
From: yhna940 <yhna940@gmail.com>
Date: Sat, 24 Feb 2024 21:56:17 +0900
Subject: [PATCH] Add infracost

---
 .github/workflows/cost.yml | 49 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 .github/workflows/cost.yml

diff --git a/.github/workflows/cost.yml b/.github/workflows/cost.yml
new file mode 100644
index 0000000..b6df588
--- /dev/null
+++ b/.github/workflows/cost.yml
@@ -0,0 +1,49 @@
+name: Cost Estimation
+
+on:
+  pull_request:
+    types: [opened, synchronize, closed]
+
+jobs:
+  infracost-pull-request-checks:
+    name: Infracost Pull Request Checks
+    if: github.event_name == 'pull_request' && (github.event.action == 'opened' || github.event.action == 'synchronize')
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pull-requests: write # Required to post comments
+    steps:
+
+      - name: Setup Infracost
+        uses: infracost/actions/setup@v2
+        with:
+          api-key: ${{ secrets.INFRACOST_API_KEY }}
+
+      - name: Checkout base branch
+        uses: actions/checkout@v4
+        with:
+          ref: '${{ github.event.pull_request.base.ref }}'
+
+      - name: Generate Infracost cost estimate baseline
+        run: |
+          infracost breakdown --path=. \
+                              --format=json \
+                              --out-file=/tmp/infracost-base.json
+
+      - name: Checkout PR branch
+        uses: actions/checkout@v4
+
+      - name: Generate Infracost diff
+        run: |
+          infracost diff --path=. \
+                          --format=json \
+                          --compare-to=/tmp/infracost-base.json \
+                          --out-file=/tmp/infracost.json
+
+      - name: Post Infracost comment
+        run: |
+            infracost comment github --path=/tmp/infracost.json \
+                                     --repo=$GITHUB_REPOSITORY \
+                                     --github-token=${{ github.token }} \
+                                     --pull-request=${{ github.event.pull_request.number }} \
+                                     --behavior=update