//go:build linux

package hostexec

import (
	"errors"
	"os"
	"path/filepath"
	"testing"
)

func TestPlan9CheckLocalNeverCreatesMissingLocks(t *testing.T) {
	for _, holdLifetime := range []bool{false, true} {
		cfg, _, clock, _, _ := fixture(t)
		cfg.Binding.ControllerID = "controller"
		if holdLifetime {
			unlock, err := tryAcquire(cfg.LockDir, cfg.Binding.Host)
			if err != nil {
				t.Fatal(err)
			}
			defer unlock()
		}
		before, err := os.ReadDir(cfg.LockDir)
		if err != nil {
			t.Fatal(err)
		}
		if err = CheckLocal(cfg.Guard.DataDir, cfg.Binding, clock, cfg.LockDir); err == nil {
			t.Fatal("missing locks granted authority")
		}
		after, err := os.ReadDir(cfg.LockDir)
		if err != nil {
			t.Fatal(err)
		}
		if len(after) != len(before) {
			t.Fatalf("probe created lock files: before=%v after=%v", before, after)
		}
	}
}
func TestPlan9CheckLocalDoesNotRepairLockModes(t *testing.T) {
	cfg, _, clock, _, _ := fixture(t)
	cfg.Binding.ControllerID = "controller"
	path := filepath.Join(cfg.LockDir, cfg.Binding.Host+".lock")
	if err := os.WriteFile(path, nil, 0600); err != nil {
		t.Fatal(err)
	}
	if err := CheckLocal(cfg.Guard.DataDir, cfg.Binding, clock, cfg.LockDir); !errors.Is(err, ErrLost) {
		t.Fatal(err)
	}
	info, err := os.Stat(path)
	if err != nil {
		t.Fatal(err)
	}
	if info.Mode().Perm() != 0600 {
		t.Fatalf("reader changed lock mode to %o", info.Mode().Perm())
	}
}

func TestPlan9CheckLocalExistingLiveControllerRemainsAdmitted(t *testing.T) {
	cfg, _, clock, _, _ := fixture(t)
	controller, err := Open(t.Context(), cfg)
	if err != nil {
		t.Fatal(err)
	}
	t.Cleanup(func() { closeController(t, controller) })
	state := ready(t, controller)
	if err = cfg.Guard.WithLocal(t.Context(), state.Host, func() error { return CheckLocal(cfg.Guard.DataDir, state.Binding, clock, cfg.LockDir) }); err != nil {
		t.Fatal(err)
	}
}