package gueststar

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

	"github.com/google/go-querystring/query"
)

type GetGuestStarSessionParams struct {
	// The ID of the broadcaster you want to get guest star settings for.
	BroadcasterID string `url:"broadcaster_id"`

	// The ID of the broadcaster or a user that has permission to moderate the broadcaster’s chat room.
	// This ID must match the user ID in the user access token.
	ModeratorID string `url:"moderator_id"`
}

type GetGuestStarSessionResponse struct {
	// Summary of the session details
	Data []Session `json:"data"`
}

// Gets information about an ongoing Guest Star session for a particular channel.
//
// Requires OAuth Scope: channel:read:guest_star, channel:manage:guest_star, moderator:read:guest_star or moderator:manage:guest_star
// Guests must be either invited or assigned a slot within the session
func (g *GuestStar) GetGuestStarSession(ctx context.Context, params *GetGuestStarSessionParams) (*GetGuestStarSessionResponse, error) {
	v, _ := query.Values(params)
	endpoint := g.baseUrl.ResolveReference(&url.URL{Path: "guest_star/session", RawQuery: v.Encode()})

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

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

	statusOK := res.StatusCode >= 200 && res.StatusCode < 300
	if !statusOK {
		return nil, fmt.Errorf("failed to get guest star session (%d)", res.StatusCode)
	}

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

	return &data, nil
}