package library

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

	"github.com/arnef/toni-sync/internal/tonieapi"
)

type fakeScaffoldClient struct {
	households    []tonieapi.Household
	toniesByHouse map[string][]tonieapi.CreativeTonie
}

func (f *fakeScaffoldClient) GetHouseholds() ([]tonieapi.Household, error) {
	return f.households, nil
}

func (f *fakeScaffoldClient) GetCreativeTonies(householdID string) ([]tonieapi.CreativeTonie, error) {
	return f.toniesByHouse[householdID], nil
}

func TestScaffoldCreatesFolders(t *testing.T) {
	root := t.TempDir()
	client := &fakeScaffoldClient{
		households: []tonieapi.Household{{ID: "h1", Name: "Family"}},
		toniesByHouse: map[string][]tonieapi.CreativeTonie{
			"h1": {{ID: "t1", HouseholdID: "h1", Name: "Peppa Wutz"}},
		},
	}

	results, err := Scaffold(client, root)
	if err != nil {
		t.Fatal(err)
	}
	if len(results) != 1 || !results[0].Created {
		t.Fatalf("expected 1 created result, got %+v", results)
	}

	expected := filepath.Join(root, "h1", "Peppa Wutz [id=t1]")
	if info, err := os.Stat(expected); err != nil || !info.IsDir() {
		t.Fatalf("expected folder %s to exist: %v", expected, err)
	}
}

func TestScaffoldLeavesExistingFolderUntouched(t *testing.T) {
	root := t.TempDir()
	// Simulate an existing folder that was renamed locally but keeps the id suffix.
	existing := filepath.Join(root, "h1", "My Custom Name [id=t1]")
	if err := os.MkdirAll(existing, 0o755); err != nil {
		t.Fatal(err)
	}
	// Put a marker file inside to make sure Scaffold doesn't touch it.
	marker := filepath.Join(existing, "song.mp3")
	if err := os.WriteFile(marker, []byte("data"), 0o644); err != nil {
		t.Fatal(err)
	}

	client := &fakeScaffoldClient{
		households: []tonieapi.Household{{ID: "h1", Name: "Family"}},
		toniesByHouse: map[string][]tonieapi.CreativeTonie{
			"h1": {{ID: "t1", HouseholdID: "h1", Name: "Peppa Wutz (renamed in cloud)"}},
		},
	}

	results, err := Scaffold(client, root)
	if err != nil {
		t.Fatal(err)
	}
	if len(results) != 1 || results[0].Created {
		t.Fatalf("expected existing folder to be reported as not created, got %+v", results)
	}
	if results[0].Folder != existing {
		t.Fatalf("expected folder %s, got %s", existing, results[0].Folder)
	}
	if _, err := os.Stat(marker); err != nil {
		t.Fatalf("expected local file to remain untouched: %v", err)
	}
}