Binary Size Compare workflow (SurgeDM/Surge)

name: Binary Size Compare
 
on:
  pull_request:
    branches:
      - main
    paths-ignore:
      - "extension/**"
 
permissions:
  contents: read
 
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true
 
jobs:
  compare:
    timeout-minutes: 30
    name: Compare Binary Size
    runs-on: latchkey-small
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
 
      - name: Set up Go
        uses: actions/setup-go@v5
        with:
          go-version: "1.25.0"
          check-latest: false
 
      - name: Build and Compare
        id: compare
        shell: bash
        run: |
          set -euo pipefail
 
          # Build PR version (using stripped flags to get true production size)
          go build -ldflags="-s -w" -o /tmp/binary-pr .
          size_pr=$(stat -c%s /tmp/binary-pr)
 
          # Fetch and build Main version
          git fetch origin main:refs/remotes/origin/main
          git checkout --detach origin/main
          
          go build -ldflags="-s -w" -o /tmp/binary-main .
          size_main=$(stat -c%s /tmp/binary-main)
 
          diff=$((size_pr - size_main))
          
          echo "$size_pr" > size_pr.txt
          echo "$size_main" > size_main.txt
          echo "$diff" > diff.txt
          
          if [ "$size_pr" -gt "$size_main" ]; then
            echo "true" > exceeds.txt
          else
            echo "false" > exceeds.txt
          fi
          
          echo "${{ github.event.pull_request.number }}" > pr_number.txt
 
      - name: Upload artifact
        uses: actions/upload-artifact@v4
        with:
          name: binary-size-data
          path: |
            size_pr.txt
            size_main.txt
            diff.txt
            exceeds.txt
            pr_number.txt