using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

const int SOURCE_MIN_X = 18;
const int SOURCE_MAX_X = 29;
const int SOURCE_MIN_Y = 25;
const int SOURCE_MAX_Y = 36;

const int FIELD_MIN_X = 18;
const int FIELD_MAX_X = 29;
const int FIELD_MIN_Y = 9;
const int FIELD_MAX_Y = 20;

int GetColorNumber(string name)
{
    var match = Regex.Match(name, @"\d+$");
    return match.Success ? int.Parse(match.Value) : -1;
}

Log("=== AUTO DETECTING COLORS ===");

var selectors = new Dictionary<int, int>();
foreach (var item in FloorItems)
{
    string name = item.GetName();
    if (name.Contains("Cylinder Block") || name.Contains("Hemisphere Block"))
    {
        int colorNum = GetColorNumber(name);
        if (colorNum > 0 && !selectors.ContainsKey(colorNum))
        {
            selectors[colorNum] = (int)item.Id;
            Log($"Selector: {name} -> Color {colorNum}");
        }
    }
}
Log($"Total selectors: {selectors.Count}");

var sourcePixels = new Dictionary<(int x, int y), int>();
foreach (var item in FloorItems)
{
    int x = item.Location.X;
    int y = item.Location.Y;
    double z = item.Location.Z;
    if (x < SOURCE_MIN_X || x > SOURCE_MAX_X || y < SOURCE_MIN_Y || y > SOURCE_MAX_Y) continue;
    if (z < 0.7 || z > 1.0) continue;
    int colorNum = GetColorNumber(item.GetName());
    if (colorNum > 0)
        sourcePixels[(x, y)] = colorNum;
}
Log($"Source pixels: {sourcePixels.Count}");

var fieldTiles = new Dictionary<(int x, int y), int>();
foreach (var item in FloorItems)
{
    int x = item.Location.X;
    int y = item.Location.Y;
    double z = item.Location.Z;
    if (x < FIELD_MIN_X || x > FIELD_MAX_X || y < FIELD_MIN_Y || y > FIELD_MAX_Y) continue;
    if (z > 0.5) continue;
    fieldTiles[(x, y)] = (int)item.Id;
}
Log($"Field tiles: {fieldTiles.Count}");

int offsetY = SOURCE_MIN_Y - FIELD_MIN_Y;

var toChange = new List<(int fieldId, int srcColor)>();
foreach (var src in sourcePixels)
{
    int fieldX = src.Key.x;
    int fieldY = src.Key.y - offsetY;
    int srcColor = src.Value;
    
    if (!fieldTiles.TryGetValue((fieldX, fieldY), out int fieldId)) continue;
    if (!selectors.ContainsKey(srcColor)) continue;
    
    toChange.Add((fieldId, srcColor));
}

var sorted = toChange.OrderBy(x => x.srcColor).ToList();
Log($"To change: {sorted.Count}");

int lastColor = -1;
int changed = 0;

foreach (var item in sorted)
{
    if (item.srcColor != lastColor)
    {
        await SendAsync(Out["ClickFurni"], selectors[item.srcColor], 0);
        await Task.Delay(50);
        lastColor = item.srcColor;
    }
    
    await SendAsync(Out["ClickFurni"], item.fieldId, 0);
    await Task.Delay(50);
    changed++;
}

Log($"Done! Changed: {changed}");