const (
	HeaderAuthorization     = "Authorization"
	HeaderXmsDate           = "x-ms-date"
	HeaderContentLength     = "Content-Length"
	HeaderContentEncoding   = "Content-Encoding"
	HeaderContentLanguage   = "Content-Language"
	HeaderContentType       = "Content-Type"
	HeaderContentMD5        = "Content-MD5"
	HeaderIfModifiedSince   = "If-Modified-Since"
	HeaderIfMatch           = "If-Match"
	HeaderIfNoneMatch       = "If-None-Match"
	HeaderIfUnmodifiedSince = "If-Unmodified-Since"
	HeaderRange             = "Range"
	HeaderXmsVersion        = "x-ms-version"
	HeaderXmsRequestID      = "x-ms-request-id"
)

const (
	AppendBlobClient = "azblob/appendblob.Client"
	BlobClient       = "azblob/blob.Client"
	BlockBlobClient  = "azblob/blockblob.Client"
	ContainerClient  = "azblob/container.Client"
	PageBlobClient   = "azblob/pageblob.Client"
	ServiceClient    = "azblob/service.Client"
)

const (
	DefaultConcurrency = 5
)

const (
	TokenScope = "https://storage.azure.com/.default"
)

var CRC64Table = crc64.MakeTable(crc64Polynomial)

type BatchTransferOptions struct {
	TransferSize  int64
	ChunkSize     int64
	NumChunks     uint16
	Concurrency   uint16
	Operation     func(ctx context.Context, offset int64, chunkSize int64) error
	OperationName string
}

type BufferManager[T ~[]byte] interface {
	// Acquire returns the channel that contains the pool of buffers.
	Acquire() <-chan T

	// Release releases the buffer back to the pool for reuse/cleanup.
	Release(T)

	// Grow grows the number of buffers, up to the predefined max.
	// It returns the total number of buffers or an error.
	// No error is returned if the number of buffers has reached max.
	// This is called only from the reading goroutine.
	Grow() (int, error)

	// Free cleans up all buffers.
	Free()
}

type Mmb []byte

type ParsedConnectionString struct {
	ServiceURL  string
	AccountName string
	AccountKey  string
}

type SectionWriter struct {
	Count    int64
	Offset   int64
	Position int64
	WriterAt io.WriterAt
}