package main

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

func TestRepoRootsFollowConsolidatedWorkspaceContainingCWD(t *testing.T) {
	workspace := scaffoldConsolidatedWorkspace(t)
	t.Chdir(filepath.Join(workspace, "check-safety"))

	if got, want := blockNinjaRepoRoot(), filepath.Join(workspace, "cms"); got != want {
		t.Fatalf("blockNinjaRepoRoot() = %q, want %q", got, want)
	}
	if got, want := orchestratorRepoRoot(), filepath.Join(workspace, "orchestrator"); got != want {
		t.Fatalf("orchestratorRepoRoot() = %q, want %q", got, want)
	}

	orchestratorBackend := filepath.Join(workspace, "orchestrator", "backend")
	if got := inferAllowedPackagePrefixes(filepath.Join(workspace, "orchestrator"), orchestratorBackend); !slices.Equal(got, []string{"orchestrator."}) {
		t.Fatalf("orchestrator prefixes = %v, want [orchestrator.]", got)
	}
}

func TestSamePathRecognizesFilesystemAliases(t *testing.T) {
	realDir := filepath.Join(t.TempDir(), "real")
	if err := os.Mkdir(realDir, 0755); err != nil {
		t.Fatalf("mkdir real directory: %v", err)
	}
	aliasDir := filepath.Join(t.TempDir(), "alias")
	if err := os.Symlink(realDir, aliasDir); err != nil {
		t.Fatalf("symlink alias: %v", err)
	}

	if !samePath(realDir, aliasDir) {
		t.Fatalf("samePath(%q, %q) = false, want true", realDir, aliasDir)
	}
}

func scaffoldConsolidatedWorkspace(t *testing.T) string {
	t.Helper()
	workspace := t.TempDir()
	for _, dir := range []string{
		filepath.Join(workspace, "cms", "backend"),
		filepath.Join(workspace, "orchestrator", "backend"),
		filepath.Join(workspace, "check-safety"),
	} {
		if err := os.MkdirAll(dir, 0755); err != nil {
			t.Fatalf("mkdir %s: %v", dir, err)
		}
	}
	for _, path := range []string{
		filepath.Join(workspace, "cms", "backend", "go.mod"),
		filepath.Join(workspace, "orchestrator", "backend", "go.mod"),
		filepath.Join(workspace, "check-safety", "go.mod"),
	} {
		if err := os.WriteFile(path, []byte("module example.com/test\n"), 0644); err != nil {
			t.Fatalf("write %s: %v", path, err)
		}
	}
	return workspace
}