using System;
using System.Globalization;
using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
using UnityEditor.Build;
using UnityEditor.Build.Reporting;
#endif

namespace DanieleMarotta.RiversongCodeShowcase
{
#if UNITY_EDITOR
    public class BuildVersionPreprocessor : IPreprocessBuildWithReport
    {
        private const string AssetPath = "Assets/_Project/Config/BuildVersion.asset";

        public int callbackOrder => 0;

        public void OnPreprocessBuild(BuildReport report)
        {
            var buildVersion = AssetDatabase.LoadAssetAtPath<BuildVersionAsset>(AssetPath);

            if (!buildVersion)
                throw new BuildFailedException($"Missing build version asset at '{AssetPath}'.");

            var today = DateTime.Now;
            var dayKey = today.ToString("yyyyMMdd", CultureInfo.InvariantCulture);

            if (string.Equals(buildVersion.LastBuildDate, dayKey, StringComparison.Ordinal))
                buildVersion.LastBuildCounter++;
            else
            {
                buildVersion.LastBuildDate = dayKey;
                buildVersion.LastBuildCounter = 1;
            }

            buildVersion.CurrentVersion = string.Format(
                CultureInfo.InvariantCulture,
                "{0:00}.{1:00}.{2:0000}.{3}",
                today.Month,
                today.Day,
                today.Year,
                buildVersion.LastBuildCounter);

            EditorUtility.SetDirty(buildVersion);
            AssetDatabase.SaveAssets();
        }
    }
#endif
}