// voxelThing.c (cleaned-up main loop)
#include "raylib.h"
#include "raymath.h"
#include "rlgl.h"
#include "stdio.h"

#include "chunkStructures.h"
#include "chunkRenderer.h"
#include "blockTypes.h"
#include "playerController.h"
#include "chunkGenerator.h"

int main(void) {
    // --- Screen setup ---
    SetConfigFlags(FLAG_WINDOW_RESIZABLE);
    InitWindow(800, 600, "VoxelThing");
    SetExitKey(-1);
    DisableCursor();

    // --- World generation ---
    Chunk chunk;
    if (!LoadChunk(&chunk, "saves/chunk_0_0_0.dat")) {
        // There was no save, gotta generate a fresh chunk to play with.
        printf("--- WORLDGEN--- No save, creating new chunk.\n");
        GenerateFlatChunk(&chunk);
        PlaceTreeAt(&chunk, 8, 64, 8);
        SaveChunk(&chunk, "saves/chunk_0_0_0.dat");
    }
    Mesh chunkMesh = GenerateChunkMesh(&chunk);

    // --- Load textures and materials ---
    Texture2D atlas = LoadTexture("assets/TextureAtlas.png");
    Material mat = LoadMaterialDefault();
    mat.maps[MATERIAL_MAP_DIFFUSE].texture = atlas;

    // --- Player setup ---
    Player player = {
        .mapPosition = (Vector3){ 1.0f, 67.0f, 1.0f },
        .playerOrientation = (Vector2){ 0.0f, 0.0f },
        .moveSpeed = 10.0f
    };

    player.camera.fovy = 90.0f;
    player.camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };
    player.camera.projection = CAMERA_PERSPECTIVE;

    SetTargetFPS(60);

    bool paused = false;
    RaycastHit hit;
    int blockSelection = BLOCK_SAND;

    while (!WindowShouldClose()) {
        int screenWidth = GetScreenWidth();
        int screenHeight = GetScreenHeight();

        // Toggle fullscreen
        if (IsKeyPressed(KEY_F11)) {
            ToggleFullscreen();
            SetMousePosition(screenWidth / 2, screenHeight / 2);
        }

        // Pause toggle
        if (IsKeyPressed(KEY_ESCAPE)) {
            paused = !paused;
            paused ? EnableCursor() : DisableCursor();
        }

        // Temporary block selection hotkeys
        if (IsKeyPressed(KEY_ONE))   blockSelection = BLOCK_STONE;
        if (IsKeyPressed(KEY_TWO))   blockSelection = BLOCK_DIRT;
        if (IsKeyPressed(KEY_THREE)) blockSelection = BLOCK_GRASS;
        if (IsKeyPressed(KEY_FOUR))  blockSelection = BLOCK_SAND;
        if (IsKeyPressed(KEY_FIVE))  blockSelection = BLOCK_GRAVEL;
        if (IsKeyPressed(KEY_SIX))   blockSelection = BLOCK_LOG;
        if (IsKeyPressed(KEY_SEVEN)) blockSelection = BLOCK_LEAF;
        if (IsKeyPressed(KEY_EIGHT)) blockSelection = BLOCK_PLANK;

        if (!paused) {
            UpdatePlayer(&player);
            hit = GetPlayerRaycastHit(&player, &chunk, 10.0f);
            HandleBlockInteraction(&player, &chunk, hit, blockSelection);

            if (hit.hit && (IsMouseButtonPressed(MOUSE_LEFT_BUTTON) || IsMouseButtonPressed(MOUSE_RIGHT_BUTTON))) {
                UnloadMesh(chunkMesh);
                chunkMesh = GenerateChunkMesh(&chunk);
            }
        }

        BeginDrawing();
        ClearBackground(RAYWHITE);

        BeginMode3D(player.camera);
        DrawMesh(chunkMesh, mat, MatrixIdentity());

        if (hit.hit) {
            DrawCubeWires(Vector3Add(hit.position, (Vector3){0.5f, 0.5f, 0.5f}), 1.02f, 1.02f, 1.02f, BLACK);
            //DrawFaceHighlight(hit.position, hit.normal);
        }

        EndMode3D();

        // Draw crosshair
        DrawLine(screenWidth / 2 - 5, screenHeight / 2, screenWidth / 2 + 5, screenHeight / 2, DARKGRAY);
        DrawLine(screenWidth / 2, screenHeight / 2 - 5, screenWidth / 2, screenHeight / 2 + 5, DARKGRAY);

        // Debug info
        DrawText(TextFormat("Yaw: %.1f  Pitch: %.1f", player.playerOrientation.x * RAD2DEG, player.playerOrientation.y * RAD2DEG), 10, 10, 20, DARKGRAY);

        if (paused) {
            DrawRectangle(0, 0, screenWidth, screenHeight, Fade(DARKGRAY, 0.5f));
            DrawText("Paused", screenWidth / 2 - MeasureText("Paused", 40) / 2, screenHeight / 2 - 20, 40, RAYWHITE);
            DrawText("Press ESC to resume", screenWidth / 2 - MeasureText("Press ESC to resume", 20) / 2, screenHeight / 2 + 30, 20, LIGHTGRAY);
        }

        EndDrawing();
    }

    // --- Cleanup ---
    SaveChunk(&chunk, "saves/chunk_0_0_0.dat");
    UnloadTexture(atlas);
    UnloadMesh(chunkMesh);
    UnloadMaterial(mat);
    CloseWindow();
    return 0;
}