// Copyright (C) 2014 Jakob Borg and Contributors (see the CONTRIBUTORS file).
// All rights reserved. Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.

package protocol

import "fmt"

type IndexMessage struct {
	Repository string     // max:64
	Files      []FileInfo // max:10000000
}

type FileInfo struct {
	Name     string // max:1024
	Flags    uint32
	Modified int64
	Version  uint64
	Blocks   []BlockInfo // max:1000000
}

func (f FileInfo) String() string {
	return fmt.Sprintf("File{Name:%q, Flags:0%o, Modified:%d, Version:%d, Size:%d, Blocks:%v}",
		f.Name, f.Flags, f.Modified, f.Version, f.Size(), f.Blocks)
}

func (f FileInfo) Size() (bytes int64) {
	for _, b := range f.Blocks {
		bytes += int64(b.Size)
	}
	return
}

func (a FileInfo) Equals(b FileInfo) bool {
	return a.Version == b.Version
}

func (a FileInfo) NewerThan(b FileInfo) bool {
	return a.Version > b.Version
}

type BlockInfo struct {
	Offset int64 // noencode (cache only)
	Size   uint32
	Hash   []byte // max:64
}

func (b BlockInfo) String() string {
	return fmt.Sprintf("Block{%d/%d/%x}", b.Offset, b.Size, b.Hash)
}

type RequestMessage struct {
	Repository string // max:64
	Name       string // max:1024
	Offset     uint64
	Size       uint32
}

type ClusterConfigMessage struct {
	ClientName    string       // max:64
	ClientVersion string       // max:64
	Repositories  []Repository // max:64
	Options       []Option     // max:64
}

type Repository struct {
	ID    string // max:64
	Nodes []Node // max:64
}

type Node struct {
	ID         []byte // max:32
	Flags      uint32
	MaxVersion uint64
}

type Option struct {
	Key   string // max:64
	Value string // max:1024
}