// Animancer // https://kybernetik.com.au/animancer // Copyright 2018-2023 Kybernetik //

#pragma warning disable CS0649 // Field is never assigned to, and will always have its default value.

#if UNITY_EDITOR

using UnityEngine;

namespace Animancer.Editor
{
    /// <summary>[Editor-Only] A welcome screen for <see cref="Animancer"/>.</summary>
    /// https://kybernetik.com.au/animancer/api/Animancer.Editor/AnimancerReadMe
    /// 
    // [CreateAssetMenu]
    [HelpURL(Strings.DocsURLs.APIDocumentation + "." + nameof(Animancer.Editor) + "/" + nameof(AnimancerReadMe))]
    public class AnimancerReadMe : ReadMe
    {
        /************************************************************************************************************************/

        /// <summary>The release ID of the current version.</summary>
        /// <example><list type="bullet">
        /// <item>[ 1] = v1.0.0: 2018-05-02.</item>
        /// <item>[ 2] = v1.1.0: 2018-05-29.</item>
        /// <item>[ 3] = v1.2.0: 2018-08-14.</item>
        /// <item>[ 4] = v1.3.0: 2018-09-12.</item>
        /// <item>[ 5] = v2.0.0: 2018-10-08.</item>
        /// <item>[ 6] = v3.0.0: 2019-05-27.</item>
        /// <item>[ 7] = v3.1.0: 2019-08-12.</item>
        /// <item>[ 8] = v4.0.0: 2020-01-28.</item>
        /// <item>[ 9] = v4.1.0: 2020-02-21.</item>
        /// <item>[10] = v4.2.0: 2020-03-02.</item>
        /// <item>[11] = v4.3.0: 2020-03-13.</item>
        /// <item>[12] = v4.4.0: 2020-03-27.</item>
        /// <item>[13] = v5.0.0: 2020-07-17.</item>
        /// <item>[14] = v5.1.0: 2020-07-27.</item>
        /// <item>[15] = v5.2.0: 2020-09-16.</item>
        /// <item>[16] = v5.3.0: 2020-10-06.</item>
        /// <item>[17] = v6.0.0: 2020-12-04.</item>
        /// <item>[18] = v6.1.0: 2021-04-13.</item>
        /// <item>[19] = v7.0.0: 2021-07-29.</item>
        /// <item>[20] = v7.1.0: 2021-08-13.</item>
        /// <item>[21] = v7.2.0: 2021-10-17.</item>
        /// <item>[22] = v7.3.0: 2022-07-03.</item>
        /// <item>[23] = v7.4.0: 2023-01-26.</item>
        /// <item>[24] = v7.4.1: 2023-01-28.</item>
        /// <item>[25] = v7.4.2: 2023-01-31.</item>
        /// </list></example>
        protected override int ReleaseNumber => 25;

        /// <inheritdoc/>
        protected override string VersionName => "v7.4.2";

        /// <inheritdoc/>
        protected override string ChangeLogURL => Strings.DocsURLs.ChangeLogPrefix + "v7-4";

        /// <inheritdoc/>
        protected override string PrefKey => nameof(Animancer);

        /// <inheritdoc/>
        protected override string BaseProductName => Strings.ProductName;

        /// <inheritdoc/>
        protected override string ProductName => Strings.ProductName + " Lite";

        /// <inheritdoc/>
        protected override string DocumentationURL => Strings.DocsURLs.Documentation;

        /// <inheritdoc/>
        protected override string ExampleURL => Strings.DocsURLs.Examples;

        /// <inheritdoc/>
        protected override string UpdateURL => Strings.DocsURLs.LatestVersion;

        /************************************************************************************************************************/

        public AnimancerReadMe() : base(
            new LinkSection("Forum",
                "for general discussions, feedback, and news",
                Strings.DocsURLs.Forum),
            new LinkSection("Issues",
                "for questions, suggestions, and bug reports",
                Strings.DocsURLs.Issues),
            new LinkSection("Email",
                "for anything private",
                GetEmailURL(Strings.DocsURLs.DeveloperEmail, Strings.ProductName),
                Strings.DocsURLs.DeveloperEmail))
        {
            ExtraExamples = new LinkSection[]
            {
                new LinkSection(
                    "Platformer Game Kit",
                    null,
                    "https://kybernetik.com.au/platformer"),
            };
        }

        /************************************************************************************************************************/
    }

    /************************************************************************************************************************/
    #region UnityVersionChecker
    // This class isn't in its own file because files don't get removed when upgrading from Animancer Lite to Pro.
    /************************************************************************************************************************/

    /// <summary>[Editor-Only] [Lite-Only]
    /// Validates that the Animancer.Lite.dll is the correct one for this version of Unity.
    /// </summary>
    [UnityEditor.InitializeOnLoad]
    internal static class UnityVersionChecker
    {
        /************************************************************************************************************************/

        const string ExpectedAssemblyTarget =
#if UNITY_2021_2_OR_NEWER
            "2021.2";
#elif UNITY_2021_1_OR_NEWER
            "2021.1";
#elif UNITY_2020_1_OR_NEWER
            "2020.1";
#else
            "2019.4";
#endif

        /************************************************************************************************************************/

        static UnityVersionChecker()
            => UnityEditor.EditorApplication.delayCall += Execute;

        private static void Execute()
        {
            var assembly = typeof(AnimancerEditorUtilities).Assembly;
            var attributes = assembly.GetCustomAttributes(typeof(System.Reflection.AssemblyDescriptionAttribute), false);
            if (attributes.Length != 1)
            {
                Debug.LogWarning($"{assembly.FullName} has {attributes.Length} [AssemblyDescription] attributes.");
                return;
            }

            var attribute = (System.Reflection.AssemblyDescriptionAttribute)attributes[0];
            if (attribute.Description.EndsWith($"Unity {ExpectedAssemblyTarget}+."))
                return;

            var actualAssemblyTarget = attribute.Description.Substring(attribute.Description.Length - 14, 13);
            if (!actualAssemblyTarget.StartsWith("Unity "))
                actualAssemblyTarget = "[Unknown]";

            var message = $"{assembly.GetName().Name}.dll was compiled for {actualAssemblyTarget}" +
                $" but the correct target for this version of Unity would be {ExpectedAssemblyTarget}+." +
                $"\n\nYou should download the appropriate version using the Package Manager" +
                $" or from {Strings.DocsURLs.DownloadLite}" +
                $"\n\nOr you could ignore this warning which may prevent some features from working properly." +
                $" This option will log a message which you can use to find and delete the script showing this warning.";

            var choice = UnityEditor.EditorUtility.DisplayDialogComplex($"{assembly.GetName().Name}.dll Version Mismatch",
                message,
                "Open Package Manager",
                "Ignore Warning",
                "Open Download Page");

            switch (choice)
            {
                case 0:
                    UnityEditor.PackageManager.UI.Window.Open("Animancer Lite");
                    break;

                case 1:
                    // If you just want to disable this message, comment out the [InitializeOnLoad] attribute on this class.
                    Debug.LogWarning($"{message}\n");
                    break;

                case 2:
                    Application.OpenURL(Strings.DocsURLs.DownloadLite);
                    break;
            }
        }

        /************************************************************************************************************************/
    }

    /************************************************************************************************************************/
    #endregion
    /************************************************************************************************************************/
}

#endif