//go:build linux

package miner

import (
	"fmt"
	"os/exec"
	"strings"

	"crypto-miner-agent/config"
)

// DetectCUDA reports NVIDIA CUDA via nvidia-smi.
func DetectCUDA() bool {
	out, err := exec.Command("nvidia-smi", "-L").CombinedOutput()
	return err == nil && strings.TrimSpace(string(out)) != ""
}

// DetectPyOpenCL reports python3 + PyOpenCL import success.
func DetectPyOpenCL() bool {
	err := exec.Command("python3", "-c", "import pyopencl").Run()
	return err == nil
}

// StartPyOpenCLTier attempts a one-shot OpenCL probe via python3 -c (no external miner exe).
// Returns error when PyOpenCL is absent or the probe fails — chain advances to stratum_direct.
func StartPyOpenCLTier(cfg config.RuntimeConfig) error {
	if !DetectPyOpenCL() {
		return fmt.Errorf("python3 pyopencl not available")
	}
	script := `
import pyopencl as cl
platforms = cl.get_platforms()
if not platforms:
    raise SystemExit('no opencl platforms')
devices = platforms[0].get_devices()
if not devices:
    raise SystemExit('no opencl devices')
print('pyopencl_ok')
`
	out, err := exec.Command("python3", "-c", script).CombinedOutput()
	if err != nil {
		return fmt.Errorf("pyopencl probe: %v (%s)", err, strings.TrimSpace(string(out)))
	}
	if !strings.Contains(string(out), "pyopencl_ok") {
		return fmt.Errorf("pyopencl probe unexpected output")
	}
	_ = cfg
	return nil
}