package app

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

func TestProductionCompositionHasNoHookRegistration(t *testing.T) {
	root := findGoMod(t)
	files := []string{
		filepath.Join(root, "internal", "app", "app.go"),
		filepath.Join(root, "internal", "server", "workflow_approval_hook.go"),
		filepath.Join(root, "internal", "server", "server.go"),
	}
	for _, f := range files {
		b, err := os.ReadFile(f)
		if err != nil {
			t.Fatal(err)
		}
		src := string(b)
		if strings.Contains(src, "OnOutbox =") {
			t.Fatalf("%s still assigns OnOutbox", f)
		}
		if strings.Contains(src, "AddOnApprovedHook(") {
			t.Fatalf("%s still registers AddOnApprovedHook", f)
		}
	}
}

func findGoMod(t *testing.T) string {
	t.Helper()
	dir, err := os.Getwd()
	if err != nil {
		t.Fatal(err)
	}
	for {
		if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
			return dir
		}
		parent := filepath.Dir(dir)
		if parent == dir {
			t.Fatal("go.mod not found")
		}
		dir = parent
	}
}