/*
Copyright 2024 New Vector Ltd.
Copyright 2021 The Matrix.org Foundation C.I.C.

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

import * as React from "react";
import { createRef } from "react";
import { MatrixCall } from "matrix-js-sdk/src/webrtc/call";

import AccessibleButton, { ButtonEvent } from "../elements/AccessibleButton";
import ContextMenu, { IProps as IContextMenuProps } from "../../structures/ContextMenu";
import Field from "../elements/Field";
import DialPad from "../voip/DialPad";

interface IProps extends IContextMenuProps {
    call: MatrixCall;
}

interface IState {
    value: string;
}

export default class DialpadContextMenu extends React.Component<IProps, IState> {
    private numberEntryFieldRef: React.RefObject<Field> = createRef();

    public constructor(props: IProps) {
        super(props);

        this.state = {
            value: "",
        };
    }

    public onDigitPress = (digit: string, ev: ButtonEvent): void => {
        this.props.call.sendDtmfDigit(digit);
        this.setState({ value: this.state.value + digit });

        // Keep the number field focused so that keyboard entry is still available
        // However, don't focus if this wasn't the result of directly clicking on the button,
        // i.e someone using keyboard navigation.
        if (ev.type === "click") {
            this.numberEntryFieldRef.current?.focus();
        }
    };

    public onCancelClick = (): void => {
        this.props.onFinished();
    };

    public onKeyDown = (ev: React.KeyboardEvent): void => {
        // Prevent Backspace and Delete keys from functioning in the entry field
        if (ev.code === "Backspace" || ev.code === "Delete") {
            ev.preventDefault();
        }
    };

    public onChange = (ev: React.ChangeEvent<HTMLInputElement>): void => {
        this.setState({ value: ev.target.value });
    };

    public render(): React.ReactNode {
        return (
            <ContextMenu {...this.props}>
                <div className="mx_DialPadContextMenuWrapper">
                    <div>
                        <AccessibleButton className="mx_DialPadContextMenu_cancel" onClick={this.onCancelClick} />
                    </div>
                    <div className="mx_DialPadContextMenu_header">
                        <Field
                            ref={this.numberEntryFieldRef}
                            className="mx_DialPadContextMenu_dialled"
                            value={this.state.value}
                            autoFocus={true}
                            onKeyDown={this.onKeyDown}
                            onChange={this.onChange}
                        />
                    </div>
                    <div className="mx_DialPadContextMenu_dialPad">
                        <DialPad onDigitPress={this.onDigitPress} hasDial={false} />
                    </div>
                </div>
            </ContextMenu>
        );
    }
}