package gueststar

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

	"go.fifitido.net/twitch/api/endpoint"
)

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

// Programmatically creates a Guest Star session on behalf of the broadcaster. Requires the broadcaster to be present in the call interface, or the call will be ended automatically.
//
// Query parameter broadcaster_id must match the user_id in the User-Access token
// Requires OAuth Scope: channel:manage:guest_star
func (g *GuestStar) CreateGuestStarSession(ctx context.Context, broadcasterID string) (*CreateGuestStarSessionResponse, error) {
	v := url.Values{"broadcaster_id": {broadcasterID}}

	req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint.Make(g.baseUrl, "guest_star/session", v), 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 create guest star session (%d)", res.StatusCode)
	}

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

	return &data, nil
}