package schedule

import (
	"context"
	"encoding/json"
	"net/http"
	"net/url"
	"time"

	"github.com/google/go-querystring/query"
	"go.fifitido.net/twitch/api/types"
)

type GetChannelStreamScheduleParams struct {
	// The ID of the broadcaster that owns the streaming schedule you want to get.
	BroadcasterId string `url:"broadcaster_id"`

	// The ID of the scheduled segment to return.
	// To specify more than one segment, include the ID of each segment you want to get. For example, id=1234&id=5678.
	// You may specify a maximum of 100 IDs.
	IDs []string `url:"id,omitempty"`

	// The UTC date and time that identifies when in the broadcaster’s schedule to start returning segments.
	// If not specified, the request returns segments starting after the current UTC date and time.
	// Specify the date and time in RFC3339 format (for example, 2022-09-01T00:00:00Z).
	StartTime *time.Time `url:"start_time,omitempty"`

	// Not supported.
	UTCOffset *string `url:"utc_offset,omitempty"`

	// The maximum number of items to return per page in the response.
	// The minimum page size is 1 item per page and the maximum is 25 items per page.
	// The default is 20.
	First int `url:"first,omitempty"`

	// The cursor used to get the next page of results.
	// The Pagination object in the response contains the cursor’s value.
	// Read More: https://dev.twitch.tv/docs/api/guide#pagination
	After *types.Cursor `url:"after,omitempty"`
}

type GetChannelStreamScheduleResponse struct {
	// The broadcaster’s streaming schedule.
	Data ChannelStreamSchedule `json:"data"`
}

// Gets the broadcaster’s streaming schedule. You can get the entire schedule or specific segments of the schedule.
// Learn More: https://help.twitch.tv/s/article/channel-page-setup#Schedule
//
// Requires an app access token or user access token.
func (s *Schedule) GetChannelStreamSchedule(ctx context.Context, params *GetChannelStreamScheduleParams) (*GetChannelStreamScheduleResponse, error) {
	v, _ := query.Values(params)
	endpoint := s.baseUrl.ResolveReference(&url.URL{Path: "schedule", RawQuery: v.Encode()})

	req, err := http.NewRequestWithContext(ctx, http.MethodGet, endpoint.String(), nil)
	if err != nil {
		return nil, err
	}

	res, err := s.client.Do(req)
	if err != nil {
		return nil, err
	}
	defer res.Body.Close()

	var data GetChannelStreamScheduleResponse
	if err := json.NewDecoder(res.Body).Decode(&data); err != nil {
		return nil, err
	}

	return &data, nil
}