package users

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

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

type UpdateUserExtensionsRequest struct {
	// The extensions to update. The data field is a dictionary of extension types.
	// The dictionary’s possible keys are: panel, overlay, or component.
	// The key’s value is a dictionary of extensions.
	//
	// For the extension’s dictionary, the key is a sequential number beginning with 1.
	// For panel and overlay extensions, the key’s value is an object that contains the following fields:
	// active (true/false), id (the extension’s ID), and version (the extension’s version).
	//
	// For component extensions, the key’s value includes the above fields plus the x and y fields,
	// which identify the coordinate where the extension is placed.
	Data map[string]map[string]interface{} `json:"data"`
}

type UpdateUserExtensionsResponse struct {
	// The extensions that the broadcaster updated.
	Data []ActiveExtension `json:"data"`
}

// Updates an installed extension’s information. You can update the extension’s activation state, ID, and version number.
// The user ID in the access token identifies the broadcaster whose extensions you’re updating.
//
// NOTE: If you try to activate an extension under multiple extension types, the last write wins (and there is no guarantee of write order).
//
// Requires a user access token that includes the user:edit:broadcast scope.
func (u *Users) UpdateUserExtensions(ctx context.Context, body *UpdateUserExtensionsRequest) (*UpdateUserExtensionsResponse, error) {
	r, w := io.Pipe()

	go func() {
		if err := json.NewEncoder(w).Encode(body); err != nil {
			w.CloseWithError(err)
		} else {
			w.Close()
		}
	}()

	req, err := http.NewRequestWithContext(ctx, http.MethodPatch, endpoint.Make(u.baseUrl, "users/extensions"), r)
	if err != nil {
		return nil, err
	}

	res, err := u.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 update user extensions (%d)", res.StatusCode)
	}

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

	return &data, nil
}