//
// Created by bruno on 6.9.2025.
//

#include "turret.h"
#include "tile.h"
#include "../util/audio.h"
#include "../entity/entity.h"

const uint16_t AmmoDamages[ITEMREGISTRY_SIZE] = {
        [IRON_INGOT] = 2,
        [GOLD_INGOT] = 1,
        [SILVER_INGOT] = 3,
        [PLATINUM_INGOT] = 5,
        [IRON_BULLET] = 20,
        [GOLD_BULLET] = 10,
        [SILVER_BULLET] = 30,
        [PLATINUM_BULLET] = 50,
};

void updateTurret(Tile *tile) {
    ItemOnBelt *inItem = &tile->items[TURRET_AMMO_INPUT_SLOT];
    Item inItemType = ItemRegistry[inItem->type];

    uint16_t damage = AmmoDamages[inItem->type];

    // Reduce cooldown (miscVal) if above 0
    if (tile->miscVal > 0) {
        tile->miscVal--;
    }

    // If there's no ammo or it's invalid, stop the sound and return
    if (damage == 0) {
        if (tile->audioCh < NUM_SYNTH_VOICES) {
            audioData.synthVoices[tile->audioCh].volume = 0;
        }
        if (animationStep % (TileRegistry[tile->type].animation.frameCount - 1) == 0) {
            tile->fixedFrame = 1;
        }
        return;
    }

    // Search for a target entity
    bool foundEnt = false;
    for (int i = 0; i < entities.activeCount; i++) {
        Entity *ent = &entities.entities[i];
        int dx = abs(ent->renderRect.x - (tile->rect.x * TILE_SIZE));
        int dy = abs(ent->renderRect.y - (tile->rect.y * TILE_SIZE));
        int d = sqrt(dx * dx + dy * dy);

        if (d <= (TILE_SIZE * 8)) {
            foundEnt = true;

            if (tile->miscVal == 0) {
                // Do damage and consume ammo
                ent->health -= damage;
                inItem->type = 0;

                // Get or reuse audio channel
                if (tile->audioCh >= NUM_SYNTH_VOICES) {
                    tile->audioCh = getAvailableChannel();
                }

                if (tile->audioCh < NUM_SYNTH_VOICES) {
                    SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
                    voice->volume = 255;
                    voice->phase = 0;
                    voice->sourceRect.x = tile->rect.x * TILE_SIZE;
                    voice->sourceRect.y = tile->rect.y * TILE_SIZE;
                    voice->waveform = WAVE_TRIANGLE;
                    voice->frequency = 400;
                }

                tile->fixedFrame = 0;
                tile->miscVal = 20; // Cooldown (ticks) until next fire
            }

            break; // Only shoot one entity
        }
    }

    // No entity found? Fade sound out
    if (!foundEnt && tile->audioCh < NUM_SYNTH_VOICES) {
        SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
        if (voice->volume > 0) {
            voice->volume--;
        }
        if (animationStep % (TileRegistry[tile->type].animation.frameCount - 1) == 0) {
            tile->fixedFrame = 1;
        }
    }

    // Lower frequency for pitch effect if it's still playing
    if (tile->audioCh < NUM_SYNTH_VOICES) {
        SynthVoice *voice = &audioData.synthVoices[tile->audioCh];
        if (voice->frequency > 80) {
            voice->frequency--;
        }
    }
}