// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.

package repairer

import (
	"context"
	"time"

	"storj.io/storj/internal/memory"
	"storj.io/storj/pkg/overlay"
	"storj.io/storj/pkg/pointerdb/pdbclient"
	ecclient "storj.io/storj/pkg/storage/ec"
	"storj.io/storj/pkg/storage/segments"
	"storj.io/storj/pkg/transport"
)

// Config contains configurable values for repairer
type Config struct {
	MaxRepair     int           `help:"maximum segments that can be repaired concurrently" default:"100"`
	Interval      time.Duration `help:"how frequently checker should audit segments" default:"3600s"`
	OverlayAddr   string        `help:"Address to contact overlay server through"`
	PointerDBAddr string        `help:"Address to contact pointerdb server through"`
	MaxBufferMem  memory.Size   `help:"maximum buffer memory (in bytes) to be allocated for read buffers" default:"4M"`
	APIKey        string        `help:"repairer-specific pointerdb access credential"`
}

// GetSegmentRepairer creates a new segment repairer from storeConfig values
func (c Config) GetSegmentRepairer(ctx context.Context, tc transport.Client) (ss SegmentRepairer, err error) {
	defer mon.Task()(&ctx)(&err)

	var oc overlay.Client
	oc, err = overlay.NewClientContext(ctx, tc, c.OverlayAddr)
	if err != nil {
		return nil, err
	}

	pdb, err := pdbclient.NewClientContext(ctx, tc, c.PointerDBAddr, c.APIKey)
	if err != nil {
		return nil, err
	}

	ec := ecclient.NewClient(tc, c.MaxBufferMem.Int())
	return segments.NewSegmentRepairer(oc, ec, pdb), nil
}