package store_test

import (
	"context"
	"testing"

	"github.com/syonad/clonepack/internal/store"
)

func newSnapshotStore(t *testing.T) (*store.SQLiteSnapshotStore, int64) {
	t.Helper()
	db := newTestDB(t)
	repoID := insertTestRepo(t, db)
	return store.NewSnapshotStore(db), repoID
}

func TestCreateAndGetSnapshot(t *testing.T) {
	s, repoID := newSnapshotStore(t)
	ctx := context.Background()

	id, err := s.CreateSnapshot(ctx, repoID, "v1.0")
	if err != nil {
		t.Fatalf("CreateSnapshot: %v", err)
	}

	snap, err := s.GetSnapshot(ctx, id)
	if err != nil {
		t.Fatalf("GetSnapshot: %v", err)
	}
	if snap.RepoID != repoID {
		t.Errorf("RepoID: got %d, want %d", snap.RepoID, repoID)
	}
	if snap.Label != "v1.0" {
		t.Errorf("Label: got %q, want v1.0", snap.Label)
	}
}

func TestGetSnapshot_notFound(t *testing.T) {
	s, _ := newSnapshotStore(t)
	_, err := s.GetSnapshot(context.Background(), 9999)
	if err != store.ErrNotFound {
		t.Errorf("expected ErrNotFound, got %v", err)
	}
}

func TestListSnapshots(t *testing.T) {
	s, repoID := newSnapshotStore(t)
	ctx := context.Background()

	snaps, err := s.ListSnapshots(ctx, repoID)
	if err != nil {
		t.Fatalf("ListSnapshots (empty): %v", err)
	}
	if len(snaps) != 0 {
		t.Errorf("expected 0 snapshots, got %d", len(snaps))
	}

	s.CreateSnapshot(ctx, repoID, "snap-1")
	s.CreateSnapshot(ctx, repoID, "snap-2")

	snaps, err = s.ListSnapshots(ctx, repoID)
	if err != nil {
		t.Fatalf("ListSnapshots: %v", err)
	}
	if len(snaps) != 2 {
		t.Fatalf("expected 2 snapshots, got %d", len(snaps))
	}
}

func TestAddAndGetSnapshotPackages(t *testing.T) {
	s, repoID := newSnapshotStore(t)
	ctx := context.Background()

	snapID, _ := s.CreateSnapshot(ctx, repoID, "with-pkgs")

	pkgs := []store.SnapshotPackage{
		{Name: "curl", Version: "7.88", Arch: "amd64", Location: "Packages/curl.rpm", Checksum: "abc", ChecksumType: "sha256", Size: 1000},
		{Name: "wget", Version: "1.21", Arch: "amd64", Location: "Packages/wget.rpm", Checksum: "def", ChecksumType: "sha256", Size: 2000},
	}
	if err := s.AddSnapshotPackages(ctx, snapID, pkgs); err != nil {
		t.Fatalf("AddSnapshotPackages: %v", err)
	}

	got, err := s.GetSnapshotPackages(ctx, snapID)
	if err != nil {
		t.Fatalf("GetSnapshotPackages: %v", err)
	}
	if len(got) != 2 {
		t.Fatalf("expected 2 packages, got %d", len(got))
	}
	if got[0].Name != "curl" {
		t.Errorf("pkg[0].Name: got %q, want curl", got[0].Name)
	}
	if got[1].Size != 2000 {
		t.Errorf("pkg[1].Size: got %d, want 2000", got[1].Size)
	}
}

func TestAddSnapshotPackages_empty(t *testing.T) {
	s, repoID := newSnapshotStore(t)
	ctx := context.Background()

	snapID, _ := s.CreateSnapshot(ctx, repoID, "empty")
	if err := s.AddSnapshotPackages(ctx, snapID, nil); err != nil {
		t.Fatalf("AddSnapshotPackages with nil: %v", err)
	}
	pkgs, _ := s.GetSnapshotPackages(ctx, snapID)
	if len(pkgs) != 0 {
		t.Errorf("expected 0 packages, got %d", len(pkgs))
	}
}

func TestDeleteSnapshot(t *testing.T) {
	s, repoID := newSnapshotStore(t)
	ctx := context.Background()

	snapID, _ := s.CreateSnapshot(ctx, repoID, "to-delete")
	pkgs := []store.SnapshotPackage{
		{Name: "curl", Version: "7.88", Arch: "amd64", Location: "loc", Checksum: "abc", ChecksumType: "sha256", Size: 100},
	}
	s.AddSnapshotPackages(ctx, snapID, pkgs)

	if err := s.DeleteSnapshot(ctx, snapID); err != nil {
		t.Fatalf("DeleteSnapshot: %v", err)
	}
	if _, err := s.GetSnapshot(ctx, snapID); err != store.ErrNotFound {
		t.Errorf("expected ErrNotFound after delete, got %v", err)
	}
	// Cascade: packages should also be gone.
	remaining, _ := s.GetSnapshotPackages(ctx, snapID)
	if len(remaining) != 0 {
		t.Errorf("expected cascade delete of packages, got %d", len(remaining))
	}
}

func TestDeleteSnapshot_notFound(t *testing.T) {
	s, _ := newSnapshotStore(t)
	err := s.DeleteSnapshot(context.Background(), 9999)
	if err != store.ErrNotFound {
		t.Errorf("expected ErrNotFound, got %v", err)
	}
}