package monitoring

import (
	"context"
	"testing"

	"github.com/rcourtman/pulse-go-rewrite/internal/models"
	"github.com/rcourtman/pulse-go-rewrite/pkg/proxmox"
)

type fakeSnapshotClient struct {
	storages map[string][]proxmox.Storage
	contents map[string]map[string][]proxmox.StorageContent
}

func (f fakeSnapshotClient) GetNodes(ctx context.Context) ([]proxmox.Node, error) { return nil, nil }
func (f fakeSnapshotClient) GetNodeStatus(ctx context.Context, node string) (*proxmox.NodeStatus, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetNodeRRDData(ctx context.Context, node string, timeframe string, cf string, ds []string) ([]proxmox.NodeRRDPoint, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetVMs(ctx context.Context, node string) ([]proxmox.VM, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetContainers(ctx context.Context, node string) ([]proxmox.Container, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetStorage(ctx context.Context, node string) ([]proxmox.Storage, error) {
	return f.storages[node], nil
}
func (f fakeSnapshotClient) GetAllStorage(ctx context.Context) ([]proxmox.Storage, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetBackupTasks(ctx context.Context) ([]proxmox.Task, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetReplicationStatus(ctx context.Context) ([]proxmox.ReplicationJob, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetStorageContent(ctx context.Context, node, storage string) ([]proxmox.StorageContent, error) {
	if storageContents, ok := f.contents[node]; ok {
		return storageContents[storage], nil
	}
	return nil, nil
}
func (f fakeSnapshotClient) GetVMSnapshots(ctx context.Context, node string, vmid int) ([]proxmox.Snapshot, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetContainerSnapshots(ctx context.Context, node string, vmid int) ([]proxmox.Snapshot, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetVMStatus(ctx context.Context, node string, vmid int) (*proxmox.VMStatus, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetContainerStatus(ctx context.Context, node string, vmid int) (*proxmox.Container, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetClusterResources(ctx context.Context, resourceType string) ([]proxmox.ClusterResource, error) {
	return nil, nil
}
func (f fakeSnapshotClient) IsClusterMember(ctx context.Context) (bool, error) { return false, nil }
func (f fakeSnapshotClient) GetVMFSInfo(ctx context.Context, node string, vmid int) ([]proxmox.VMFileSystem, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetVMNetworkInterfaces(ctx context.Context, node string, vmid int) ([]proxmox.VMNetworkInterface, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetVMAgentInfo(ctx context.Context, node string, vmid int) (map[string]interface{}, error) {
	return map[string]interface{}{}, nil
}

func (f fakeSnapshotClient) GetVMAgentVersion(ctx context.Context, node string, vmid int) (string, error) {
	return "", nil
}
func (f fakeSnapshotClient) GetZFSPoolStatus(ctx context.Context, node string) ([]proxmox.ZFSPoolStatus, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetZFSPoolsWithDetails(ctx context.Context, node string) ([]proxmox.ZFSPoolInfo, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetDisks(ctx context.Context, node string) ([]proxmox.Disk, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetCephStatus(ctx context.Context) (*proxmox.CephStatus, error) {
	return nil, nil
}
func (f fakeSnapshotClient) GetCephDF(ctx context.Context) (*proxmox.CephDF, error) { return nil, nil }

func TestCollectSnapshotSizes(t *testing.T) {
	m := &Monitor{}
	snapshots := []models.GuestSnapshot{
		{
			ID:       "inst-node1-100-pre",
			Name:     "pre",
			Node:     "node1",
			Instance: "inst",
			Type:     "qemu",
			VMID:     100,
		},
	}

	client := fakeSnapshotClient{
		storages: map[string][]proxmox.Storage{
			"node1": {
				{Storage: "local-zfs", Content: "images"},
			},
		},
		contents: map[string]map[string][]proxmox.StorageContent{
			"node1": {
				"local-zfs": {
					{Volid: "local-zfs:vm-100-disk-0@pre", VMID: 100, Size: 20 << 30},
					// Duplicate entry should be deduped via volid tracking
					{Volid: "local-zfs:vm-100-disk-0@pre", VMID: 100, Size: 20 << 30},
				},
			},
		},
	}

	sizes := m.collectSnapshotSizes(context.Background(), "inst", client, snapshots)
	got, ok := sizes[snapshots[0].ID]
	if !ok {
		t.Fatalf("expected size entry for snapshot")
	}
	want := int64(20 << 30)
	if got != want {
		t.Fatalf("unexpected size: got %d want %d", got, want)
	}
}