using System.IO;
using UnityEditor;

using Ubisoft.Hotel.Package.Editor;

namespace Ubisoft.Hotel.PackageManager.Sample
{
    public class UseCasesSampleManager
    {
        private const string SAMPLE_NAME = "properties_use_cases";
        private static string m_unitySrcSampleRootPath;

        [MenuItem("Hotel/PackageManagement/PackageManager/Install sample")]
        public static void Menu_PreProcess()
        {
            OnLoad();
        }

        [InitializeOnLoadMethod]
        private static void OnLoad()
        {
            // Install the sample in consumer's project
            string unitySrcPath = $"{UnitySrcSampleRootPath}/Hotel/Editor/Scripts";
            string unityDstPath = "Assets/Hotel/Editor/Scripts";

            string platformSrcPath = HtAssetDatabase.UnityPathToPlatformPath(unitySrcPath, true);
            if (Directory.Exists(platformSrcPath))
            {
                string msg = "Installing this sample will rearrange some assets in the host project. It is strongly recommended to install it in a fresh new project.\n\n";
                msg += $"Do you want to continue with the installation?";

                bool confirmation = EditorUtility.DisplayDialog("Hotel PackageManager properties use cases sample", msg, "Yes", "No");
                if (confirmation)
                {
                    InstallSample(unitySrcPath, unityDstPath);
                }
                else
                {
                    // If the user declines the installation then the whole sample folder is deleted
                    HtAssetDatabase.DeleteFolder(UnitySrcSampleRootPath, true);
                }
            }
        }

        private static string UnitySrcSampleRootPath
        {
            get
            {
                if (m_unitySrcSampleRootPath == null)
                {
                    string packageJson = File.ReadAllText(HtAssetUtility.GetAssetInPackagePath(Editor.PackageManager.PACKAGE_NAME, "package.json"));
                    CustomPackageInfo packageInfo = CustomPackageInfo.Parse(packageJson);

                    m_unitySrcSampleRootPath = $"Assets/Samples/{packageInfo.displayName}/{packageInfo.version}/properties_use_cases";
                }

                return m_unitySrcSampleRootPath;
            }
        }

        private static void InstallSample(string unitySrcRootPath, string unityDstRootPath)
        {
            Debug.Log("InstallSample");

            string platformSrcPath = HtAssetDatabase.UnityPathToPlatformPath(unitySrcRootPath, true);
            string platformDstPath = HtAssetDatabase.UnityPathToPlatformPath(unityDstRootPath, true);

            // Delete Assets/Hotel/Editor/Scripts
            if (Directory.Exists(platformDstPath))
            {
                Directory.Delete(platformDstPath, true);
            }

            // Move from sample to Assets/Hotel/Editor/Scripts
            Directory.Move(platformSrcPath, platformDstPath);

            // Delete Scripts folder in sample so there will be no more attempts to install it again
            HtAssetDatabase.DeleteFolder(unitySrcRootPath);

            // Rename from .txt to .cs
            string unitySrcPath = $"{unityDstRootPath}/{Editor.AppSpaceBuildSuiteProvider.CONSUMER_PACKAGE_SUITE_PROVIDER_FILENAME_NO_EXT}.txt";
            string unityDstPath = $"{unityDstRootPath}/{Editor.AppSpaceBuildSuiteProvider.CONSUMER_PACKAGE_SUITE_PROVIDER_FILENAME_NO_EXT}.cs";
            File.Move(HtAssetDatabase.UnityPathToPlatformPath(unitySrcPath), HtAssetDatabase.UnityPathToPlatformPath(unityDstPath));

            unitySrcPath = $"{unityDstRootPath}/{Editor.AppSpaceBuildSuiteProvider.CONSUMER_ASMDEF_FILENAME_NO_EXT}.txt";
            unityDstPath = $"{unityDstRootPath}/{Editor.AppSpaceBuildSuiteProvider.CONSUMER_ASMDEF_FILENAME_NO_EXT}.asmdef";
            File.Move(HtAssetDatabase.UnityPathToPlatformPath(unitySrcPath), HtAssetDatabase.UnityPathToPlatformPath(unityDstPath));

            // Delete current hotelSettings.asset so it's regenerated with the new ConsumerPackageSuiteProvider.cs
            Editor.PackageManager.DeleteHotelSettings();

            // Copy scenes to Assets
            unitySrcPath = $"{UnitySrcSampleRootPath}/Scenes";
            unityDstPath = $"Assets/{SAMPLE_NAME}";
            HtAssetDatabase.DeleteFolder(unityDstPath);
            HtAssetDatabase.CreateFolder(unityDstPath);

            unityDstPath += $"/Scenes";
            platformSrcPath = HtAssetDatabase.UnityPathToPlatformPath(unitySrcPath, true);
            platformDstPath = HtAssetDatabase.UnityPathToPlatformPath(unityDstPath, true);
            Directory.Move(platformSrcPath, platformDstPath);

            AssetDatabase.Refresh();
        }
    }
}