// <copyright file="KeyInputDevice.cs" company="Selenium Committers">
// Licensed to the Software Freedom Conservancy (SFC) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The SFC licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.
// </copyright>

using System;
using System.Collections.Generic;
using System.Globalization;

namespace OpenQA.Selenium.Interactions;

/// <summary>
/// Represents a key input device, such as a keyboard.
/// </summary>
public class KeyInputDevice : InputDevice
{
    /// <summary>
    /// Initializes a new instance of the <see cref="KeyInputDevice"/> class.
    /// </summary>
    public KeyInputDevice()
        : this(Guid.NewGuid().ToString())
    {
    }

    /// <summary>
    /// Initializes a new instance of the <see cref="KeyInputDevice"/> class, given the device's name.
    /// </summary>
    /// <param name="deviceName">The unique name of this input device.</param>
    /// <exception cref="ArgumentException">If <paramref name="deviceName"/> is <see langword="null"/> or <see cref="string.Empty"/>.</exception>
    public KeyInputDevice(string deviceName)
        : base(deviceName)
    {
    }

    /// <summary>
    /// Gets the type of device for this input device.
    /// </summary>
    public override InputDeviceKind DeviceKind => InputDeviceKind.Key;

    /// <summary>
    /// Converts this input device into an object suitable for serializing across the wire.
    /// </summary>
    /// <returns>A <see cref="Dictionary{TKey, TValue}"/> representing this input device.</returns>
    public override Dictionary<string, object> ToDictionary()
    {
        Dictionary<string, object> toReturn = new Dictionary<string, object>();

        toReturn["type"] = "key";
        toReturn["id"] = this.DeviceName;

        return toReturn;
    }

    /// <summary>
    /// Creates a key-down action for simulating a press of a key.
    /// </summary>
    /// <param name="codePoint">The unicode character to be sent.</param>
    /// <returns>The <see cref="Interaction"/> representing the action.</returns>
    public Interaction CreateKeyDown(char codePoint)
    {
        return new KeyDownInteraction(this, codePoint);
    }

    /// <summary>
    /// Creates a key-up action for simulating a release of a key.
    /// </summary>
    /// <param name="codePoint">The unicode character to be sent.</param>
    /// <returns>The <see cref="Interaction"/> representing the action.</returns>
    public Interaction CreateKeyUp(char codePoint)
    {
        return new KeyUpInteraction(this, codePoint);
    }

    private class KeyDownInteraction : TypingInteraction
    {
        public KeyDownInteraction(InputDevice sourceDevice, char codePoint)
            : base(sourceDevice, "keyDown", codePoint)
        {
        }

        public override string ToString()
        {
            return string.Format(CultureInfo.InvariantCulture, "Key down [key: {0}]", Keys.GetDescription(this.Value));
        }
    }

    private class KeyUpInteraction : TypingInteraction
    {
        public KeyUpInteraction(InputDevice sourceDevice, char codePoint)
            : base(sourceDevice, "keyUp", codePoint)
        {
        }

        public override string ToString()
        {
            return string.Format(CultureInfo.InvariantCulture, "Key up [key: {0}]", Keys.GetDescription(this.Value));
        }
    }

    private class TypingInteraction : Interaction
    {
        private readonly string type;

        public TypingInteraction(InputDevice sourceDevice, string type, char codePoint)
            : base(sourceDevice)
        {
            this.type = type;
            this.Value = codePoint.ToString();
        }

        protected string Value { get; }

        public override Dictionary<string, object> ToDictionary()
        {
            Dictionary<string, object> toReturn = new Dictionary<string, object>();

            toReturn["type"] = this.type;
            toReturn["value"] = this.Value;

            return toReturn;
        }
    }
}
