name: Test Self-Hosted Runner

on:
  workflow_dispatch:
  schedule:
    - cron: "30 2 * * *"

permissions:
  contents: read

jobs:
  runner-health:
    name: Runner Health / self-hosted aws-india
    runs-on: [self-hosted, Linux, X64, aws-india, blacksmith-2vcpu-ubuntu-2404, hetzner]
    timeout-minutes: 10
    steps:
      - name: Check runner info
        run: |
          echo "Runner: $(hostname)"
          echo "OS: $(uname -a)"
          echo "User: $(whoami)"
          if command -v rustc >/dev/null 2>&1; then
            echo "Rust: $(rustc --version)"
          else
            echo "Rust: <not installed>"
          fi
          if command -v cargo >/dev/null 2>&1; then
            echo "Cargo: $(cargo --version)"
          else
            echo "Cargo: <not installed>"
          fi
          if command -v cc >/dev/null 2>&1; then
            echo "CC: $(cc --version | head -n1)"
          else
            echo "CC: <not installed>"
          fi
          if command -v gcc >/dev/null 2>&1; then
            echo "GCC: $(gcc --version | head -n1)"
          else
            echo "GCC: <not installed>"
          fi
          if command -v clang >/dev/null 2>&1; then
            echo "Clang: $(clang --version | head -n1)"
          else
            echo "Clang: <not installed>"
          fi
          if command -v docker >/dev/null 2>&1; then
            echo "Docker: $(docker --version)"
          else
            echo "Docker: <not installed>"
          fi
      - name: Verify compiler + disk prerequisites
        shell: bash
        run: |
          set -euo pipefail
          failed=0

          if ! command -v cc >/dev/null 2>&1; then
            echo "::error::Missing 'cc'. Install build-essential (or gcc/clang + symlink)."
            failed=1
          fi

          free_kb="$(df -Pk . | awk 'NR==2 {print $4}')"
          min_kb=$((10 * 1024 * 1024))
          if [ "${free_kb}" -lt "${min_kb}" ]; then
            echo "::error::Disk free below 10 GiB; clean runner workspace/cache."
            df -h .
            failed=1
          fi

          inode_used_pct="$(df -Pi . | awk 'NR==2 {gsub(/%/, "", $5); print $5}')"
          if [ "${inode_used_pct}" -ge 95 ]; then
            echo "::error::Inode usage >=95%; clean files to avoid ENOSPC."
            df -i .
            failed=1
          fi

          if [ "${failed}" -ne 0 ]; then
            exit 1
          fi
      - name: Test Docker
        shell: bash
        run: |
          set -euo pipefail
          if ! command -v docker >/dev/null 2>&1; then
            echo "::notice::Docker is not installed on this self-hosted runner. Skipping docker smoke test."
            exit 0
          fi

          docker run --rm hello-world