package mocks

import (
	"context"
	"io"
	"time"

	godigest "github.com/opencontainers/go-digest"
	ispec "github.com/opencontainers/image-spec/specs-go/v1"
	artifactspec "github.com/oras-project/artifacts-spec/specs-go/v1"

	"zotregistry.io/zot/pkg/scheduler"
)

type MockedImageStore struct {
	NameFn              func() string
	DirExistsFn         func(d string) bool
	RootDirFn           func() string
	InitRepoFn          func(name string) error
	ValidateRepoFn      func(name string) (bool, error)
	GetRepositoriesFn   func() ([]string, error)
	GetNextRepositoryFn func(repo string) (string, error)
	GetImageTagsFn      func(repo string) ([]string, error)
	GetImageManifestFn  func(repo string, reference string) ([]byte, godigest.Digest, string, error)
	PutImageManifestFn  func(repo string, reference string, mediaType string, body []byte) (godigest.Digest,
		godigest.Digest, error)
	DeleteImageManifestFn  func(repo string, reference string, detectCollision bool) error
	BlobUploadPathFn       func(repo string, uuid string) string
	NewBlobUploadFn        func(repo string) (string, error)
	GetBlobUploadFn        func(repo string, uuid string) (int64, error)
	BlobUploadInfoFn       func(repo string, uuid string) (int64, error)
	PutBlobChunkStreamedFn func(repo string, uuid string, body io.Reader) (int64, error)
	PutBlobChunkFn         func(repo string, uuid string, from int64, to int64, body io.Reader) (int64, error)
	FinishBlobUploadFn     func(repo string, uuid string, body io.Reader, digest godigest.Digest) error
	FullBlobUploadFn       func(repo string, body io.Reader, digest godigest.Digest) (string, int64, error)
	DedupeBlobFn           func(src string, dstDigest godigest.Digest, dstRepo, dst string) error
	DeleteBlobUploadFn     func(repo string, uuid string) error
	BlobPathFn             func(repo string, digest godigest.Digest) string
	CheckBlobFn            func(repo string, digest godigest.Digest) (bool, int64, error)
	StatBlobFn             func(repo string, digest godigest.Digest) (bool, int64, time.Time, error)
	GetBlobPartialFn       func(repo string, digest godigest.Digest, mediaType string, from, to int64,
	) (io.ReadCloser, int64, int64, error)
	GetBlobFn          func(repo string, digest godigest.Digest, mediaType string) (io.ReadCloser, int64, error)
	DeleteBlobFn       func(repo string, digest godigest.Digest) error
	GetIndexContentFn  func(repo string) ([]byte, error)
	GetBlobContentFn   func(repo string, digest godigest.Digest) ([]byte, error)
	GetReferrersFn     func(repo string, digest godigest.Digest, artifactTypes []string) (ispec.Index, error)
	GetOrasReferrersFn func(repo string, digest godigest.Digest, artifactType string,
	) ([]artifactspec.Descriptor, error)
	URLForPathFn         func(path string) (string, error)
	RunGCRepoFn          func(repo string) error
	RunGCPeriodicallyFn  func(interval time.Duration, sch *scheduler.Scheduler)
	RunDedupeBlobsFn     func(interval time.Duration, sch *scheduler.Scheduler)
	RunDedupeForDigestFn func(ctx context.Context, digest godigest.Digest, dedupe bool,
		duplicateBlobs []string) error
	GetNextDigestWithBlobPathsFn func(repos []string, lastDigests []godigest.Digest) (godigest.Digest, []string, error)
	GetAllBlobsFn                func(repo string) ([]string, error)
	CleanupRepoFn                func(repo string, blobs []godigest.Digest, removeRepo bool) (int, error)
	PutIndexContentFn            func(repo string, index ispec.Index) error
	PopulateStorageMetricsFn     func(interval time.Duration, sch *scheduler.Scheduler)
	StatIndexFn                  func(repo string) (bool, int64, time.Time, error)
}

func (is MockedImageStore) StatIndex(repo string) (bool, int64, time.Time, error) {
	if is.StatIndexFn != nil {
		return is.StatIndexFn(repo)
	}

	return true, 0, time.Time{}, nil
}

func (is MockedImageStore) Lock(t *time.Time) {
}

func (is MockedImageStore) Unlock(t *time.Time) {
}

func (is MockedImageStore) RUnlock(t *time.Time) {
}

func (is MockedImageStore) RLock(t *time.Time) {
}

func (is MockedImageStore) Name() string {
	if is.NameFn != nil {
		return is.NameFn()
	}

	return ""
}

func (is MockedImageStore) DirExists(d string) bool {
	if is.DirExistsFn != nil {
		return is.DirExistsFn(d)
	}

	return true
}

func (is MockedImageStore) RootDir() string {
	if is.RootDirFn != nil {
		return is.RootDirFn()
	}

	return ""
}

func (is MockedImageStore) InitRepo(name string) error {
	if is.InitRepoFn != nil {
		return is.InitRepoFn(name)
	}

	return nil
}

func (is MockedImageStore) ValidateRepo(name string) (bool, error) {
	if is.ValidateRepoFn != nil {
		return is.ValidateRepoFn(name)
	}

	return true, nil
}

func (is MockedImageStore) GetRepositories() ([]string, error) {
	if is.GetRepositoriesFn != nil {
		return is.GetRepositoriesFn()
	}

	return []string{}, nil
}

func (is MockedImageStore) GetNextRepository(repo string) (string, error) {
	if is.GetNextRepositoryFn != nil {
		return is.GetNextRepositoryFn(repo)
	}

	return "", nil
}

func (is MockedImageStore) GetImageManifest(repo string, reference string) ([]byte, godigest.Digest, string, error) {
	if is.GetImageManifestFn != nil {
		return is.GetImageManifestFn(repo, reference)
	}

	return []byte{}, "", "", nil
}

func (is MockedImageStore) PutImageManifest(
	repo string,
	reference string,
	mediaType string,
	body []byte,
) (godigest.Digest, godigest.Digest, error) {
	if is.PutImageManifestFn != nil {
		return is.PutImageManifestFn(repo, reference, mediaType, body)
	}

	return "", "", nil
}

func (is MockedImageStore) GetImageTags(name string) ([]string, error) {
	if is.GetImageTagsFn != nil {
		return is.GetImageTagsFn(name)
	}

	return []string{}, nil
}

func (is MockedImageStore) GetAllBlobs(repo string) ([]string, error) {
	if is.GetAllBlobsFn != nil {
		return is.GetAllBlobsFn(repo)
	}

	return []string{}, nil
}

func (is MockedImageStore) DeleteImageManifest(name string, reference string, detectCollision bool) error {
	if is.DeleteImageManifestFn != nil {
		return is.DeleteImageManifestFn(name, reference, detectCollision)
	}

	return nil
}

func (is MockedImageStore) NewBlobUpload(repo string) (string, error) {
	if is.NewBlobUploadFn != nil {
		return is.NewBlobUploadFn(repo)
	}

	return "", nil
}

func (is MockedImageStore) GetBlobUpload(repo string, uuid string) (int64, error) {
	if is.GetBlobUploadFn != nil {
		return is.GetBlobUploadFn(repo, uuid)
	}

	return 0, nil
}

func (is MockedImageStore) BlobUploadInfo(repo string, uuid string) (int64, error) {
	if is.BlobUploadInfoFn != nil {
		return is.BlobUploadInfoFn(repo, uuid)
	}

	return 0, nil
}

func (is MockedImageStore) BlobUploadPath(repo string, uuid string) string {
	if is.BlobUploadPathFn != nil {
		return is.BlobUploadPathFn(repo, uuid)
	}

	return ""
}

func (is MockedImageStore) PutBlobChunkStreamed(repo string, uuid string, body io.Reader) (int64, error) {
	if is.PutBlobChunkStreamedFn != nil {
		return is.PutBlobChunkStreamedFn(repo, uuid, body)
	}

	return 0, nil
}

func (is MockedImageStore) PutBlobChunk(
	repo string,
	uuid string,
	from int64,
	to int64,
	body io.Reader,
) (int64, error) {
	if is.PutBlobChunkFn != nil {
		return is.PutBlobChunkFn(repo, uuid, from, to, body)
	}

	return 0, nil
}

func (is MockedImageStore) FinishBlobUpload(repo string, uuid string, body io.Reader, digest godigest.Digest) error {
	if is.FinishBlobUploadFn != nil {
		return is.FinishBlobUploadFn(repo, uuid, body, digest)
	}

	return nil
}

func (is MockedImageStore) FullBlobUpload(repo string, body io.Reader, digest godigest.Digest) (string, int64, error) {
	if is.FullBlobUploadFn != nil {
		return is.FullBlobUploadFn(repo, body, digest)
	}

	return "", 0, nil
}

func (is MockedImageStore) DedupeBlob(src string, dstDigest godigest.Digest, dstRepo, dst string) error {
	if is.DedupeBlobFn != nil {
		return is.DedupeBlobFn(src, dstDigest, dstRepo, dst)
	}

	return nil
}

func (is MockedImageStore) DeleteBlob(repo string, digest godigest.Digest) error {
	if is.DeleteBlobFn != nil {
		return is.DeleteBlobFn(repo, digest)
	}

	return nil
}

func (is MockedImageStore) BlobPath(repo string, digest godigest.Digest) string {
	if is.BlobPathFn != nil {
		return is.BlobPathFn(repo, digest)
	}

	return ""
}

func (is MockedImageStore) CheckBlob(repo string, digest godigest.Digest) (bool, int64, error) {
	if is.CheckBlobFn != nil {
		return is.CheckBlobFn(repo, digest)
	}

	return true, 0, nil
}

func (is MockedImageStore) StatBlob(repo string, digest godigest.Digest) (bool, int64, time.Time, error) {
	if is.StatBlobFn != nil {
		return is.StatBlobFn(repo, digest)
	}

	return true, 0, time.Time{}, nil
}

func (is MockedImageStore) GetBlobPartial(repo string, digest godigest.Digest, mediaType string, from, to int64,
) (io.ReadCloser, int64, int64, error) {
	if is.GetBlobPartialFn != nil {
		return is.GetBlobPartialFn(repo, digest, mediaType, from, to)
	}

	return io.NopCloser(&io.LimitedReader{}), 0, 0, nil
}

func (is MockedImageStore) GetBlob(repo string, digest godigest.Digest, mediaType string,
) (io.ReadCloser, int64, error) {
	if is.GetBlobFn != nil {
		return is.GetBlobFn(repo, digest, mediaType)
	}

	return io.NopCloser(&io.LimitedReader{}), 0, nil
}

func (is MockedImageStore) DeleteBlobUpload(repo string, uuid string) error {
	if is.DeleteBlobUploadFn != nil {
		return is.DeleteBlobUploadFn(repo, uuid)
	}

	return nil
}

func (is MockedImageStore) GetIndexContent(repo string) ([]byte, error) {
	if is.GetIndexContentFn != nil {
		return is.GetIndexContentFn(repo)
	}

	return []byte{}, nil
}

func (is MockedImageStore) GetBlobContent(repo string, digest godigest.Digest) ([]byte, error) {
	if is.GetBlobContentFn != nil {
		return is.GetBlobContentFn(repo, digest)
	}

	return []byte{}, nil
}

func (is MockedImageStore) GetReferrers(
	repo string, digest godigest.Digest,
	artifactTypes []string,
) (ispec.Index, error) {
	if is.GetReferrersFn != nil {
		return is.GetReferrersFn(repo, digest, artifactTypes)
	}

	return ispec.Index{}, nil
}

func (is MockedImageStore) GetOrasReferrers(
	repo string,
	digest godigest.Digest,
	artifactType string,
) ([]artifactspec.Descriptor, error) {
	if is.GetOrasReferrersFn != nil {
		return is.GetOrasReferrersFn(repo, digest, artifactType)
	}

	return []artifactspec.Descriptor{}, nil
}

func (is MockedImageStore) URLForPath(path string) (string, error) {
	if is.URLForPathFn != nil {
		return is.URLForPathFn(path)
	}

	return "", nil
}

func (is MockedImageStore) RunGCRepo(repo string) error {
	if is.RunGCRepoFn != nil {
		return is.RunGCRepoFn(repo)
	}

	return nil
}

func (is MockedImageStore) RunGCPeriodically(interval time.Duration, sch *scheduler.Scheduler) {
	if is.RunGCPeriodicallyFn != nil {
		is.RunGCPeriodicallyFn(interval, sch)
	}
}

func (is MockedImageStore) RunDedupeBlobs(interval time.Duration, sch *scheduler.Scheduler) {
	if is.RunDedupeBlobsFn != nil {
		is.RunDedupeBlobsFn(interval, sch)
	}
}

func (is MockedImageStore) RunDedupeForDigest(ctx context.Context, digest godigest.Digest, dedupe bool,
	duplicateBlobs []string,
) error {
	if is.RunDedupeForDigestFn != nil {
		return is.RunDedupeForDigestFn(ctx, digest, dedupe, duplicateBlobs)
	}

	return nil
}

func (is MockedImageStore) GetNextDigestWithBlobPaths(repos []string, lastDigests []godigest.Digest,
) (godigest.Digest, []string, error) {
	if is.GetNextDigestWithBlobPathsFn != nil {
		return is.GetNextDigestWithBlobPathsFn(repos, lastDigests)
	}

	return "", []string{}, nil
}

func (is MockedImageStore) CleanupRepo(repo string, blobs []godigest.Digest, removeRepo bool) (int, error) {
	if is.CleanupRepoFn != nil {
		return is.CleanupRepoFn(repo, blobs, removeRepo)
	}

	return 0, nil
}

func (is MockedImageStore) PutIndexContent(repo string, index ispec.Index) error {
	if is.PutIndexContentFn != nil {
		return is.PutIndexContentFn(repo, index)
	}

	return nil
}

func (is MockedImageStore) PopulateStorageMetrics(interval time.Duration, sch *scheduler.Scheduler) {
	if is.PopulateStorageMetricsFn != nil {
		is.PopulateStorageMetricsFn(interval, sch)
	}
}