package runners_test

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

	"github.com/google/uuid"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"

	"github.com/yan1h/agent-coding-workflow/internal/jobs/runners"
)

type fakeAttachmentRepo struct {
	softDel    []runners.AttachmentRow
	orphan     []runners.AttachmentRow
	deletedIDs []uuid.UUID
}

func (f *fakeAttachmentRepo) ListAttachmentsForSoftDeletedConversations(_ context.Context, _ time.Duration) ([]runners.AttachmentRow, error) {
	return f.softDel, nil
}
func (f *fakeAttachmentRepo) ListExpiredOrphans(_ context.Context, _ time.Duration) ([]runners.AttachmentRow, error) {
	return f.orphan, nil
}
func (f *fakeAttachmentRepo) DeleteAttachments(_ context.Context, ids []uuid.UUID) error {
	f.deletedIDs = append(f.deletedIDs, ids...)
	return nil
}

type fakeStorage struct {
	deleted []string
	err     error
}

func (s *fakeStorage) Delete(_ context.Context, path string) error {
	if s.err != nil {
		return s.err
	}
	s.deleted = append(s.deleted, path)
	return nil
}

func TestAttachmentCleanup_DeletesBothCategories(t *testing.T) {
	t.Parallel()
	a, b, c := uuid.New(), uuid.New(), uuid.New()
	repo := &fakeAttachmentRepo{
		softDel: []runners.AttachmentRow{{ID: a, StoragePath: "a"}, {ID: b, StoragePath: "b"}},
		orphan:  []runners.AttachmentRow{{ID: c, StoragePath: "c"}},
	}
	st := &fakeStorage{}
	r := runners.NewAttachmentCleanup(repo, st, runners.AttachmentCleanupConfig{Retention: 30 * 24 * time.Hour}, discardLogger())
	r.Run(context.Background())
	assert.ElementsMatch(t, []string{"a", "b", "c"}, st.deleted)
	assert.ElementsMatch(t, []uuid.UUID{a, b, c}, repo.deletedIDs)
}

func TestAttachmentCleanup_StorageErrorDoesNotDeleteFromDB(t *testing.T) {
	t.Parallel()
	repo := &fakeAttachmentRepo{
		softDel: []runners.AttachmentRow{
			{ID: uuid.New(), StoragePath: "fail"},
			{ID: uuid.New(), StoragePath: "ok"},
		},
	}
	st := &fakeStorage{err: errors.New("disk full")}
	r := runners.NewAttachmentCleanup(repo, st, runners.AttachmentCleanupConfig{Retention: 30 * 24 * time.Hour}, discardLogger())
	r.Run(context.Background())
	require.Empty(t, st.deleted, "storage error → no path recorded")
	require.Empty(t, repo.deletedIDs, "storage error → no DB delete batch")
}