// <copyright file="InitializationScript.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.Globalization;

namespace OpenQA.Selenium
{
    /// <summary>
    /// Represents a JavaScript script that is loaded and run on every document load.
    /// </summary>
    public class InitializationScript
    {
        internal InitializationScript(string scriptId, string scriptName, string scriptSource)
        {
            this.ScriptId = scriptId ?? throw new ArgumentNullException(nameof(scriptId));
            this.ScriptName = scriptName ?? throw new ArgumentNullException(nameof(scriptName));
            this.ScriptSource = scriptSource ?? throw new ArgumentNullException(nameof(scriptSource));
        }

        /// <summary>
        /// Gets the internal ID of the initialization script.
        /// </summary>
        public string ScriptId { get; }

        /// <summary>
        /// Gets the friendly name of the initialization script.
        /// </summary>
        public string ScriptName { get; }

        /// <summary>
        /// Gets the JavaScript source of the initialization script.
        /// </summary>
        public string ScriptSource { get; }

        /// <summary>
        /// Indicates whether the current <see cref="InitializationScript"/> is equal to another <see cref="InitializationScript"/> of the same type.
        /// </summary>
        /// <param name="obj">An <see cref="InitializationScript"/> to compare with this <see cref="InitializationScript"/>.</param>
        /// <returns><see langword="true"/> if the current <see cref="InitializationScript"/> is equal to the other parameter; otherwise, <see langword="false"/>.</returns>
        public override bool Equals(object? obj)
        {
            return obj is InitializationScript other && this.ScriptId == other.ScriptId && this.ScriptName == other.ScriptName && this.ScriptSource == other.ScriptSource;
        }

        /// <summary>
        /// Serves as a hash function for a particular <see cref="InitializationScript"/>.
        /// </summary>
        /// <returns>A hash code for the current <see cref="InitializationScript"/>.</returns>
        public override int GetHashCode()
        {
            int result = this.ScriptId.GetHashCode();
            result = (31 * result) + this.ScriptName.GetHashCode();
            result = (31 * result) + this.ScriptSource.GetHashCode();
            return result;
        }

        /// <summary>
        /// Returns a string that represents the current object.
        /// </summary>
        /// <returns>A string that represents the current object.</returns>
        public override string ToString()
        {
            return string.Format(CultureInfo.InvariantCulture, "Initialization Script '{0}'\nInternal ID: {1}\nSource:{2}", this.ScriptName, this.ScriptId, this.ScriptSource);
        }
    }
}
