/*

Copyright 2017-2018 Mikael Berthe

Licensed under the MIT license.  Please see the LICENSE file is this directory.

*/

package madon

import (

	"fmt"

	"strconv"

	"strings"

	"time"

	"github.com/sendgrid/rest"

)

// GetCurrentInstance returns current instance information

func (mc *Client) GetCurrentInstance() (*Instance, error) {

	var i Instance

	if err := mc.apiCall("instance", rest.Get, nil, nil, nil, &i); err != nil {

		return nil, err

	}

	return &i, nil

}

// GetInstancePeers returns current instance peers

// The peers are defined as the domains of users the instance has previously

// resolved.

func (mc *Client) GetInstancePeers() ([]InstancePeer, error) {

	var peers []InstancePeer

	if err := mc.apiCall("instance/peers", rest.Get, nil, nil, nil, &peers); err != nil {

		return nil, err

	}

	return peers, nil

}

// GetInstanceActivity returns current instance activity

func (mc *Client) GetInstanceActivity() ([]WeekActivity, error) {

	var activity []WeekActivity

	if err := mc.apiCall("instance/activity", rest.Get, nil, nil, nil, &activity); err != nil {

		return nil, err

	}

	return activity, nil

}

/* Activity time handling */

// UnmarshalJSON handles deserialization for custom ActivityTime type

func (act *ActivityTime) UnmarshalJSON(b []byte) error {

	s, err := strconv.ParseInt(strings.Trim(string(b), "\""), 10, 64)

	if err != nil {

		return err

	}

	if s == 0 {

		act.Time = time.Time{}

		return nil

	}

	act.Time = time.Unix(s, 0)

	return nil

}

// MarshalJSON handles serialization for custom ActivityTime type

func (act *ActivityTime) MarshalJSON() ([]byte, error) {

	return []byte(fmt.Sprintf("\"%d\"", act.Unix())), nil

}