using System.Runtime.CompilerServices;
using UnityEngine;

namespace CLre.Fixes
{
    [Bugfix(name = "MiniScreenEmbiggener",
        more = "https://trello.com/c/NAls3XaE/17-game-starts-minimized-and-wont-restore",
        description = "Go into fullscreen when Unity does dumb display stuff",
        component = BugfixType.Initialiser, id = 6)]
    public static class MiniScreenHelper
    {
        private const int WIDTH_MINIMUM = 200;
        private const int HEIGHT_MINIMUM = 200;
        
        [MethodImpl(MethodImplOptions.AggressiveInlining)]
        public static void Init()
        {
            if (Screen.width < WIDTH_MINIMUM || Screen.height < HEIGHT_MINIMUM)
            {
                // fix screen that's too small
                API.Utility.Logging.LogWarning($"Window is too small! (detected: {Screen.width}x{Screen.height})");
                if (Screen.resolutions.Length > 0)
                {
                    Resolution r = Screen.resolutions[Screen.resolutions.Length - 1];
                    Screen.SetResolution(r.width, r.height, true);
                    API.Utility.Logging.MetaLog($"Set screen resolution to {r.width}x{r.height} (fullscreen)");
                }
                else
                {
                    // no resolutions, try some stuff to fix this (this is basically a bunch of random guesses)
                    API.Utility.Logging.LogError("No screen resolutions available, hopefully it'll be ok eventually...");
                    Screen.fullScreen = true;
                    Display.onDisplaysUpdated += () => // hope displays update fixes things
                    {
                        API.Utility.Logging.MetaLog("Displays updated");
                        if (Screen.resolutions.Length > 0)
                        {
                            Resolution r = Screen.resolutions[Screen.resolutions.Length - 1];
                            Screen.SetResolution(r.width, r.height, true);
                            API.Utility.Logging.MetaLog($"Set screen resolution to {r.width}x{r.height} (fullscreen)");
                        }
                    };
                    // log displays to help debug this issue
                    foreach (var display in Display.displays)
                    {
                        API.Utility.Logging.MetaLog($"Display: {display.renderingWidth}x{display.renderingHeight} (sys: {display.systemWidth}x{display.systemHeight}) Active? {display.active}");
                    }
                }
            }
        }
    }
}