package task

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

func TestCreateListAndReload(t *testing.T) {
	dir := t.TempDir()
	t.Setenv("XDG_DATA_HOME", dir)

	s1, err := Open("projkey")
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	created, err := s1.Create("  Ship task sidebar  ")
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	if created.ID == "" || created.Title != "Ship task sidebar" || created.CreatedAt == "" || created.UpdatedAt == "" {
		t.Fatalf("created task incomplete: %+v", created)
	}

	s2, err := Open("projkey")
	if err != nil {
		t.Fatalf("reopen: %v", err)
	}
	got := s2.List()
	if len(got) != 1 {
		t.Fatalf("tasks len = %d, want 1 (%v)", len(got), got)
	}
	if got[0].ID != created.ID || got[0].Title != "Ship task sidebar" {
		t.Fatalf("reload mismatch: got %+v want %+v", got[0], created)
	}
	if _, err := os.Stat(s2.Path()); err != nil {
		t.Fatalf("stat tasks.json: %v", err)
	}
}

func TestCreateRequiresTitle(t *testing.T) {
	t.Setenv("XDG_DATA_HOME", t.TempDir())
	s, err := Open("projkey")
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	if _, err := s.Create("  "); err == nil {
		t.Fatalf("create with empty title should fail")
	}
}

func TestRenameTask(t *testing.T) {
	t.Setenv("XDG_DATA_HOME", t.TempDir())
	s, err := Open("projkey")
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	created, err := s.Create("Old")
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	renamed, err := s.Rename(created.ID, "New")
	if err != nil {
		t.Fatalf("rename: %v", err)
	}
	if renamed.Title != "New" {
		t.Fatalf("title = %q, want New", renamed.Title)
	}
	got, ok := s.Get(created.ID)
	if !ok || got.Title != "New" {
		t.Fatalf("get after rename = %+v, %v", got, ok)
	}
}

func TestRegisterWorktreeDedupesByPath(t *testing.T) {
	t.Setenv("XDG_DATA_HOME", t.TempDir())
	s, err := Open("projkey")
	if err != nil {
		t.Fatalf("open: %v", err)
	}
	task, err := s.Create("Worktree task")
	if err != nil {
		t.Fatalf("create: %v", err)
	}
	path := filepath.Join(t.TempDir(), "repo", "..", "repo")
	updated, err := s.RegisterWorktree(task.ID, Worktree{Path: path, Branch: "one", CreatedByProcessID: "p1"})
	if err != nil {
		t.Fatalf("register: %v", err)
	}
	if len(updated.Worktrees) != 1 {
		t.Fatalf("worktrees len = %d, want 1", len(updated.Worktrees))
	}
	clean := filepath.Clean(path)
	if updated.Worktrees[0].Path != clean {
		t.Fatalf("path = %q, want %q", updated.Worktrees[0].Path, clean)
	}
	updated, err = s.RegisterWorktree(task.ID, Worktree{Path: clean, Branch: "two"})
	if err != nil {
		t.Fatalf("register duplicate: %v", err)
	}
	if len(updated.Worktrees) != 1 {
		t.Fatalf("duplicate should replace, got %+v", updated.Worktrees)
	}
	if got := updated.Worktrees[0]; got.Branch != "two" || got.CreatedByProcessID != "p1" {
		t.Fatalf("duplicate replace mismatch: %+v", got)
	}
}

func TestOpenRequiresProjectKey(t *testing.T) {
	if _, err := Open(""); err == nil {
		t.Fatalf("open with empty project key should fail")
	}
}