//go:build linux

package preflight

import (
	"os"
	"syscall"

	"server-deploy/internal/inspect"
)

func Collect() Report {
	return Probe(inspect.Collect(), os.DirFS("/"), os.Geteuid(), diskAvailable("/var/lib"))
}

func diskAvailable(path string) Disk {
	var stat syscall.Statfs_t
	if syscall.Statfs(path, &stat) != nil || stat.Bsize <= 0 || stat.Bavail > ^uint64(0)/uint64(stat.Bsize) {
		return Disk{State: "unknown"}
	}
	return Disk{State: "observed", AvailableBytes: stat.Bavail * uint64(stat.Bsize)}
}