using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
using UnityEditor.Android;

namespace Editor.AndroidBuildSetting
{
    public class AD_BuildAndroidProcess : IPostGenerateGradleAndroidProject
    {
        private static readonly XNamespace AndroidNamespace = "http://schemas.android.com/apk/res/android";
        private static readonly XNamespace ToolsNamespace   = "http://schemas.android.com/tools";


        public void OnPostGenerateGradleAndroidProject (string path)
        {
            ProcessAndroidManifest (path);
        }


        public static void ProcessAndroidManifest (string path)
        {
#if UNITY_2019_3_OR_NEWER
            var manifestPath         = Path.Combine (path, "src/main/AndroidManifest.xml");
            var launcherManifestPath = Path.Combine (path, "../launcher/src/main/AndroidManifest.xml");
#else
            var manifestPath = Path.Combine(path, "unityLibrary/src/main/AndroidManifest.xml");
#endif
            // var manifestPath = Path.Combine(path, "src/main/AndroidManifest.xml");
            XDocument manifest;
            XDocument launcherManifest;
            try
            {
                manifest         = XDocument.Load (manifestPath);
                launcherManifest = XDocument.Load (launcherManifestPath);
            }
#pragma warning disable 0168
            catch (IOException exception)
#pragma warning restore 0168
            {
                return;
            }

            
            
            // Get the `manifest` element.
            var elementManifest = manifest.Element ("manifest");
            if (elementManifest == null)
            {
                return;
            }

            var elementApplication = elementManifest.Element ("application");
            if (elementApplication == null)
            {
                return;
            }
            
            // elementApplication.


            var elementlauncherManifest    = launcherManifest.Element ("manifest");
            var elementlauncherApplication = elementlauncherManifest.Element ("application");
            var xManifestElements          = elementManifest.Descendants ();
            var xApplicationElements       = elementApplication.Descendants ();
        
            var useQueries    = xApplicationElements.Where (element => element.Name.LocalName.Equals ("activity"));
            
            var elementByName = GetElementByName (useQueries , "com.unity3d.player.UnityPlayerActivity");
            
            //开启硬件加速 android:hardwareAccelerated="true"
            XName name = AndroidNamespace + "hardwareAccelerated";
            elementByName.SetAttributeValue (name , "true");

            // Save the updated manifest file.
            manifest.Save (manifestPath);
            launcherManifest.Save (launcherManifestPath);
        }



        public static XElement CreateQueries ()
        {
            var metaData    = new XElement ("queries");
            var packageData = new XElement ("package");
            packageData.Add (new XAttribute (AndroidNamespace + "name", "com.tencent.mm"));
            metaData.Add (packageData);
            return metaData;
        }

        private static XElement GetElementByName (IEnumerable<XElement> elements, string name)
        {
            foreach (var element in elements)
            {
                var attributes = element.Attributes ();
                if (attributes.Any (attribute => attribute.Name.Namespace.Equals (AndroidNamespace)
                                                 && attribute.Name.LocalName.Equals ("name")
                                                 && attribute.Value.Equals (name)))
                {
                    return element;
                }
            }

            return null;
        }
        

        public int callbackOrder { get; }
    }
}