package gondole

import (

	"encoding/json"

	"fmt"

	"strings"

	"github.com/sendgrid/rest"

)

// GetTimelines returns a timeline (a list of statuses

// timeline can be "home", "public", or a hashtag (":hashtag")

func (g *Client) GetTimelines(timeline string) ([]Status, error) {

	var endPoint string

	var tl []Status

	if timeline == "home" || timeline == "public" {

		endPoint = "timelines/" + timeline

	} else if strings.HasPrefix(timeline, ":") {

	} else {

		return tl, fmt.Errorf("GetTimelines: bad timelines argument")

	}

	req := g.prepareRequest(endPoint)

	r, err := rest.API(req)

	if err != nil {

		return tl, fmt.Errorf("timelines API query: %s", err.Error())

	}

	err = json.Unmarshal([]byte(r.Body), &tl)

	if err != nil {

		var res struct {

			Error string `json:"error"`

		}

		err2 := json.Unmarshal([]byte(r.Body), &res)

		if err2 == nil {

			return tl, fmt.Errorf("%s", res.Error)

		}

		return tl, fmt.Errorf("timelines API: %s", err.Error())

	}

	return tl, nil

}