package command_test

import (
	"testing"
	"time"

	"task/internal/command"
	"task/internal/ticket"
)

func TestUpdateTimeEntryUndo(t *testing.T) {
	dir := t.TempDir()
	store := ticket.NewJSONTimeStore(dir)
	h := command.NewHistory()

	created, err := store.Create(ticket.TimeEntry{
		TicketID:  "t1",
		ProjectID: "inbox",
		Start:     time.Now().UTC().Add(-time.Hour),
		Duration:  time.Hour,
		Source:    ticket.SourceManual,
	})
	if err != nil {
		t.Fatal(err)
	}

	after := created
	after.Duration = 30 * time.Minute
	after.End = after.Start.Add(after.Duration)
	if err := h.Do(&command.UpdateTimeEntry{Store: store, Before: created, After: after}); err != nil {
		t.Fatal(err)
	}
	list, _ := store.ListByTicket("t1")
	if len(list) != 1 || list[0].Duration != 30*time.Minute {
		t.Fatalf("after update: %+v", list)
	}
	if err := h.Undo(); err != nil {
		t.Fatal(err)
	}
	list, _ = store.ListByTicket("t1")
	if len(list) != 1 || list[0].Duration != time.Hour {
		t.Fatalf("after undo: %+v", list)
	}
}

func TestRemoveTimeEntryUndo(t *testing.T) {
	dir := t.TempDir()
	store := ticket.NewJSONTimeStore(dir)
	h := command.NewHistory()

	created, err := store.Create(ticket.TimeEntry{
		TicketID:  "t1",
		ProjectID: "inbox",
		Start:     time.Now().UTC(),
		Duration:  15 * time.Minute,
		Source:    ticket.SourceTimer,
	})
	if err != nil {
		t.Fatal(err)
	}
	if err := h.Do(&command.RemoveTimeEntry{Store: store, Snapshot: created}); err != nil {
		t.Fatal(err)
	}
	list, _ := store.List()
	if len(list) != 0 {
		t.Fatalf("expected empty after remove, got %d", len(list))
	}
	if err := h.Undo(); err != nil {
		t.Fatal(err)
	}
	list, _ = store.List()
	if len(list) != 1 || list[0].ID != created.ID {
		t.Fatalf("after undo: %+v", list)
	}
}