//go:build !windows

package deploy

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

	"crypto-miner-agent/config"
)


// launchProcessGuard spawns a detached shell loop that watches for the installed
// miner and restarts it on crash (Unix — Linux + macOS).
//
// Uses `pgrep -f` with the full binary path rather than `-x` (exact process-name
// match), which is unreliable on Linux where /proc truncates names to 15 chars.
func launchProcessGuard(cfg config.RuntimeConfig) {
	installDir, err := cfg.InstallDirectory()
	if err != nil {
		return
	}
	bin := filepath.Join(installDir, BinaryName(cfg))

	// Escape single-quotes in path (edge case for unusual install dirs).
	safebin := strings.ReplaceAll(bin, "'", "'\\''")

	// Loop every 60 s. If pgrep can't find any process whose command line
	// contains the full binary path, and the binary still exists, restart it.
	script := fmt.Sprintf(
		`while true; do sleep 60; pgrep -f '%s' >/dev/null 2>&1 || ([ -x '%s' ] && nohup '%s' --run >/dev/null 2>&1 &); done`,
		safebin, safebin, safebin,
	)
	cmd := exec.Command("sh", "-c", script)
	_ = cmd.Start()
}
