#include "game.h"
#include <time.h>
#include <stdlib.h>
#include <string.h>

#define MAX_RAND_TRIES_PER_WORD 10
#define EMPTY_CHAR 0

int createWordSalad(char salad[MAX_SEARCH_FIELD_LEN][MAX_SEARCH_FIELD_LEN], unsigned int gridSize, char words[][100], unsigned int wordCount)
{
    // 1. Spielfeld initialisieren
    memset(salad, EMPTY_CHAR, MAX_SEARCH_FIELD_LEN * MAX_SEARCH_FIELD_LEN);

    int placedWordsCount = 0;

    // 2. Wörter im Spielfeld platzieren
    for (unsigned int i = 0; i < wordCount; i++) {
        int len = (int)strlen(words[i]);
        
        // Wörter überspringen, die leer oder zu lang für das Suchfeld (gridSize) sind
        if (len == 0 || (unsigned int)len > gridSize) continue;

        for (int attempt = 0; attempt < MAX_RAND_TRIES_PER_WORD; attempt++) {
            Direction dir = (rand() % 2 == 0) ? DIR_HORIZONTAL : DIR_VERTICAL;
            
            int dr = (dir == DIR_VERTICAL) ? 1 : 0;   // Zeilensprung
            int dc = (dir == DIR_HORIZONTAL) ? 1 : 0; // Spaltensprung

            // Startkoordinaten innerhalb der gridSize wählen
            int row = rand() % (gridSize - (dir == DIR_VERTICAL ? len - 1 : 0));
            int col = rand() % (gridSize - (dir == DIR_HORIZONTAL ? len - 1 : 0));

            // Kollisionsprüfung
            int canPlace = 1;
            for (int k = 0; k < len; k++) {
                char current = salad[row + k * dr][col + k * dc];
                if (current != EMPTY_CHAR && current != words[i][k]) {
                    canPlace = 0;
                    break;
                }
            }

            // Wort ins Spielfeld eintragen
            if (canPlace) {
                for (int k = 0; k < len; k++) {
                    salad[row + k * dr][col + k * dc] = words[i][k];
                }
                placedWordsCount++;
                break;
            }
        }
    }

    // 3. Verbleibende leere Felder innerhalb der gridSize auffüllen
    for (unsigned int r = 0; r < gridSize; r++) {
        for (unsigned int c = 0; c < gridSize; c++) {
            if (salad[r][c] == EMPTY_CHAR) {
                salad[r][c] = 'A' + (rand() % 26);
            }
        }
    }

    return placedWordsCount;
}