// Copyright 2015 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.

// Contains a batch of utility type declarations used by the tests. As the node
// operates on unique types, a lot of them are needed to check various features.

package ipfs

import (
	"context"

	"github.com/ipfs/go-ipfs/core"
	"github.com/ipfs/go-ipfs/repo/fsrepo"
	ipld "gx/ipfs/QmWi2BYBL5gJ3CiAiQchg6rn1A8iBsrWy51EYxvHVjFvLb/go-ipld-format"
)

type Adder interface {
	Add(node ipld.Node) error
}

type adder struct {
	n   *core.IpfsNode
	ctx context.Context
}

func (a adder) Add(node ipld.Node) error {
	return a.n.DAG.Add(a.n.Context(), node) // For some reason DAG.Add method is not being exposed by the ipld.DAGService
}

func NewAdder(repoPath string) (*adder, error) {
	r, err := fsrepo.Open(repoPath)
	if err != nil {
		return nil, err
	}
	ctx := context.Background()
	cfg := &core.BuildCfg{
		Online: false,
		Repo:   r,
	}
	ipfsNode, err := core.NewNode(ctx, cfg)
	if err != nil {
		return nil, err
	}
	return &adder{n: ipfsNode, ctx: ctx}, nil
}