package application

import (
	"context"
	"errors"
	"testing"
	"time"

	"img_infinite_canvas/internal/domain/design"
	"img_infinite_canvas/internal/infrastructure/memory"
)

func TestUpdateProjectTitlePersistsTrimmedTitle(t *testing.T) {
	ctx := context.Background()
	repo := memory.NewProjectRepository()
	service := NewDesignService(repo, nil, nil, nil, nil)
	createdAt := time.Date(2026, 7, 5, 12, 0, 0, 0, time.UTC)
	service.now = func() time.Time { return createdAt.Add(time.Minute) }
	project := design.Project{
		ID:        "project-title",
		Title:     "Old title",
		Brief:     "brief",
		Status:    design.StatusReady,
		UpdatedAt: createdAt,
	}
	if err := repo.Save(ctx, project); err != nil {
		t.Fatal(err)
	}

	renamed, err := service.UpdateProjectTitle(ctx, project.ID, "  New canvas name  ")
	if err != nil {
		t.Fatal(err)
	}
	if renamed.Title != "New canvas name" {
		t.Fatalf("unexpected title: %s", renamed.Title)
	}
	if !renamed.UpdatedAt.After(createdAt) {
		t.Fatalf("expected updated timestamp to advance, got %s", renamed.UpdatedAt)
	}

	stored, err := repo.Get(ctx, project.ID)
	if err != nil {
		t.Fatal(err)
	}
	if stored.Title != renamed.Title {
		t.Fatalf("stored title mismatch: %s", stored.Title)
	}
}

func TestUpdateProjectTitleRejectsBlankTitle(t *testing.T) {
	ctx := context.Background()
	repo := memory.NewProjectRepository()
	service := NewDesignService(repo, nil, nil, nil, nil)
	if _, err := service.UpdateProjectTitle(ctx, "project-title", "   "); !errors.Is(err, design.ErrInvalidInput) {
		t.Fatalf("expected invalid input, got %v", err)
	}
}