using System;
using System.Collections.Generic;
using System.Linq;

const int BIRD_X = 17;
const int BIRD_KIND = 9039;
const int PIPE_KIND = 5986;
const int CONTROL_ID = 630985637;

int GetKind(dynamic item) { try { return (int)item.Kind; } catch { return -1; } }
void Flap() { Send(Out["UseFurniture"], CONTROL_ID, 0); }

int GetBirdY()
{
    foreach (var item in FloorItems)
    {
        if (item == null) continue;
        if (GetKind(item) != BIRD_KIND) continue;
        if (item.Location.X == BIRD_X) return item.Location.Y;
    }
    return -1;
}

(int gapMin, int gapMax, int pipeX) FindNextPipe()
{
    var pipesByX = new Dictionary<int, List<int>>();
    foreach (var item in FloorItems)
    {
        if (item == null) continue;
        if (GetKind(item) != PIPE_KIND) continue;
        int x = item.Location.X, y = item.Location.Y;
        if (!pipesByX.ContainsKey(x)) pipesByX[x] = new List<int>();
        pipesByX[x].Add(y);
    }
    
    var ahead = pipesByX.Keys.Where(x => x >= BIRD_X).OrderBy(x => x).ToList();
    if (ahead.Count == 0) return (-1, -1, 99);
    
    int closestX = ahead.First();
    var wallYs = new HashSet<int>(pipesByX[closestX]);
    
    int bestStart = -1, bestEnd = -1, bestSize = 0, gapStart = -1;
    for (int y = 7; y <= 24; y++)
    {
        if (!wallYs.Contains(y)) { if (gapStart < 0) gapStart = y; }
        else
        {
            if (gapStart >= 0)
            {
                int size = (y - 1) - gapStart + 1;
                if (size > bestSize) { bestSize = size; bestStart = gapStart; bestEnd = y - 1; }
            }
            gapStart = -1;
        }
    }
    if (gapStart >= 0)
    {
        int size = 24 - gapStart + 1;
        if (size > bestSize) { bestStart = gapStart; bestEnd = 24; }
    }
    return (bestStart, bestEnd, closestX);
}

Log("═══════════════════════════════════════════");
Log("  FLAPPY BOT V7 - CONSERVATIVE CLOSE");
Log("═══════════════════════════════════════════");

long lastFlap = 0;
int tick = 0;

while (Run)
{
    tick++;
    int birdY = GetBirdY();
    if (birdY < 0) { Delay(30); continue; }
    
    var (gapMin, gapMax, pipeX) = FindNextPipe();
    int dist = pipeX - BIRD_X;
    
    long now = DateTimeOffset.Now.ToUnixTimeMilliseconds();
    
    bool shouldFlap = false;
    string reason = "";
    
    if (gapMin > 0 && dist <= 15)
    {
        int gapCenter = (gapMin + gapMax) / 2;
        
        if (dist <= 4)
        {
            // VERY CLOSE - ONLY flap if about to hit BOTTOM wall!
            // Never flap if above center - let gravity do the work
            if (birdY >= gapMax - 1)
            {
                shouldFlap = true;
                reason = "CLOSE-EMERG";
            }
            else if (birdY <= gapMin + 1)
            {
                // Too high - definitely don't flap!
                shouldFlap = false;
                reason = "CLOSE-HIGH";
            }
            else
            {
                // In gap - DON'T flap, just drift through
                shouldFlap = false;
                reason = "CLOSE-DRIFT";
            }
        }
        else if (dist <= 10)
        {
            // MEDIUM - navigate towards center but carefully
            if (birdY > gapMax - 2)
            {
                shouldFlap = true;
                reason = "MED-LOW";
            }
            else if (birdY < gapMin + 2)
            {
                shouldFlap = false;
                reason = "MED-HIGH";
            }
            else if (birdY > gapCenter + 1)
            {
                shouldFlap = true;
                reason = "MED-ADJ";
            }
            else
            {
                reason = "MED-OK";
            }
        }
        else
        {
            // FAR - gentle approach
            if (birdY > gapCenter + 3)
            {
                shouldFlap = true;
                reason = "FAR-LOW";
            }
            else if (birdY < gapCenter - 3)
            {
                shouldFlap = false;
                reason = "FAR-HIGH";
            }
            else
            {
                reason = "FAR-OK";
            }
        }
    }
    else
    {
        // No pipe - hover
        if (birdY > 16) { shouldFlap = true; reason = "HOVER"; }
    }
    
    // Emergency ground
    if (birdY >= 21) { shouldFlap = true; reason = "EMERG"; }
    
    // Hard ceiling
    if (birdY <= 9) shouldFlap = false;
    
    if (shouldFlap && (now - lastFlap) >= 100)
    {
        Flap();
        lastFlap = now;
    }
    
    if (tick % 15 == 0)
    {
        string g = gapMin > 0 ? $"gap={gapMin}-{gapMax} d={dist}" : "NO PIPE";
        Log($"Y={birdY} | {g} | {reason}");
    }
    
    Delay(30);
}