name: CodeQL Go

on:
  pull_request:
    types: [opened, synchronize, reopened, ready_for_review]
    paths:
      - "**/*.go"
      - "go.mod"
      - "go.sum"
      - "flake.*"
      - "Makefile"
      - ".github/workflows/codeql-go.yaml"
  push:
    branches: [main]
    paths:
      - "**/*.go"
      - "go.mod"
      - "go.sum"
      - "flake.*"
      - "Makefile"
      - ".github/workflows/codeql-go.yaml"
  schedule:
    - cron: "30 2 * * 1"
  workflow_dispatch:

permissions:
  contents: read
  security-events: write
  packages: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  analyze-go:
    name: Analyze Go
    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.draft }}
    runs-on: depot-ubuntu-latest-16
    timeout-minutes: 60

    steps:
      - name: Checkout repository
        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
        with:
          persist-credentials: false

      - name: Set up Go
        uses: actions/setup-go@924ae3a1cded613372ab5595356fb5720e22ba16 # v6.5.0
        with:
          go-version: "1.26.4"
          cache: true
          cache-dependency-path: |
            go.sum
            collector/go.sum

      - name: Initialize CodeQL
        uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
        with:
          languages: go
          build-mode: manual
          dependency-caching: false

      - name: Build backend for CodeQL (PRs only)
        if: ${{ github.event_name == 'pull_request' }}
        run: |
          make build-server GO_BUILD_FLAGS=

      - name: Full build report for CodeQL (non-PRs only)
        if: ${{ github.event_name != 'pull_request' }}
        run: |
          make build GO_BUILD_FLAGS=

      - name: Perform CodeQL Analysis
        uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4.36.2
        with:
          category: "/language:go"