/*
Copyright 2024 New Vector Ltd.
Copyright 2020-2023 The Matrix.org Foundation C.I.C.
Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
Copyright 2018 New Vector Ltd
Copyright 2015, 2016 OpenMarket Ltd

SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/

import { EventType, type MatrixClient } from "matrix-js-sdk/src/matrix";

import { SDKContextClass } from "../contexts/SDKContextClass";
import { isLocalRoom } from "../utils/localRoom/isLocalRoom";
import Modal from "../Modal";
import UploadConfirmDialog from "../components/views/dialogs/UploadConfirmDialog";
import { type RunResult } from "./interface";

export function reject(error?: any): RunResult {
    return { error };
}

export function success(promise: Promise<any> = Promise.resolve()): RunResult {
    return { promise };
}

export function successSync(value: any): RunResult {
    return success(Promise.resolve(value));
}

/**
 * Check whether the user can affect power levels in the given room
 * @param cli - The Matrix client
 * @param roomId - The room ID
 * @returns True if the user can affect power levels, false otherwise
 */
export const canAffectPowerlevels = (cli: MatrixClient | null, roomId: string | null): boolean => {
    if (!cli || !roomId) return false;
    const room = cli?.getRoom(roomId);
    return !!room?.currentState.maySendStateEvent(EventType.RoomPowerLevels, cli.getSafeUserId()) && !isLocalRoom(room);
};

// XXX: workaround for https://github.com/microsoft/TypeScript/issues/31816
interface HTMLInputEvent extends Event {
    target: HTMLInputElement & EventTarget;
}

export const singleMxcUpload = async (cli: MatrixClient): Promise<string | null> => {
    return new Promise((resolve) => {
        const fileSelector = document.createElement("input");
        fileSelector.setAttribute("type", "file");
        fileSelector.onchange = (ev: Event) => {
            const file = (ev as HTMLInputEvent).target.files?.[0];
            if (!file) return;

            const { finished } = Modal.createDialog(UploadConfirmDialog, { file });
            finished.then(async ([shouldContinue]) => {
                if (shouldContinue) {
                    const { content_uri: uri } = await cli.uploadContent(file);
                    resolve(uri);
                } else {
                    resolve(null);
                }
            });
        };

        fileSelector.click();
    });
};

export const isCurrentLocalRoom = (cli: MatrixClient | null): boolean => {
    const roomId = SDKContextClass.instance.roomViewStore.getRoomId();
    if (!roomId) return false;
    const room = cli?.getRoom(roomId);
    if (!room) return false;
    return isLocalRoom(room);
};

/**
 * Split the supplied string into one or two strings separated by the first
 * region of white space we can find.
 */
export function splitAtFirstSpace(args: string): [string, string?] {
    const trimmedArgs = args.trim();
    const i = trimmedArgs.search(/\s+/);
    if (i === -1) {
        return [trimmedArgs];
    } else {
        const first = trimmedArgs.slice(0, i);
        const second = trimmedArgs.slice(i + 1).trimStart();
        if (second === "") {
            return [first];
        } else {
            return [first, second];
        }
    }
}
