package gondole

import (

	"fmt"

	"strings"

	"github.com/sendgrid/rest"

)

// GetTimelines returns a timeline (a list of statuses

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

// For the public timelines, you can set 'local' to true to get only the

// local instance.

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

	var endPoint string

	switch {

	case timeline == "home", timeline == "public":

		endPoint = "timelines/" + timeline

	case strings.HasPrefix(timeline, ":"):

		hashtag := timeline[1:]

		if hashtag == "" {

			return nil, fmt.Errorf("timelines API: empty hashtag")

		}

		endPoint = "timelines/tag/" + hashtag

	default:

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

	}

	params := make(apiCallParams)

	if timeline == "public" && local {

		params["local"] = "true"

	}

	var tl []Status

	if err := g.apiCall(endPoint, rest.Get, params, &tl); err != nil {

		return nil, err

	}

	return tl, nil

}