/*

Copyright 2017-2018 Mikael Berthe

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

*/

package madon

import (

	"strings"

	"github.com/pkg/errors"

)

// GetTimelines returns a timeline (a list of statuses)

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

// "#hashtag") or a list (use "!N", e.g. "!42" for list ID #42).

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

// local instance.

// Set 'onlyMedia' to true to only get statuses that have media attachments.

// If lopt.All is true, several requests will be made until the API server

// has nothing to return.

// If lopt.Limit is set (and not All), several queries can be made until the

// limit is reached.

func (mc *Client) GetTimelines(timeline string, local, onlyMedia bool, lopt *LimitParams) ([]Status, error) {

	var endPoint string

	switch {

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

		endPoint = "timelines/" + timeline

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

		hashtag := timeline[1:]

		if hashtag == "" {

			return nil, errors.New("timelines API: empty hashtag")

		}

		endPoint = "timelines/tag/" + hashtag

	case len(timeline) > 1 && strings.HasPrefix(timeline, "!"):

		// Check the timeline is a number

		for _, n := range timeline[1:] {

			if n < '0' || n > '9' {

				return nil, errors.New("timelines API: invalid list ID")

			}

		}

		endPoint = "timelines/list/" + timeline[1:]

	default:

		return nil, errors.New("GetTimelines: bad timelines argument")

	}

	params := make(apiCallParams)

	if timeline == "public" && local {

		params["local"] = "true"

	}

	if onlyMedia {

		params["only_media"] = "true"

	}

	return mc.getMultipleStatuses(endPoint, params, lopt)

}