From d8486a3bd71dd69f6f45b8fd2344ddeea05939e2 Mon Sep 17 00:00:00 2001
From: Morph01 <thibaut6969delastreet@gmail.com>
Date: Sun, 5 Jan 2025 11:13:19 +0100
Subject: [PATCH] feat: implement constraint classes for Sudoku (row, column,
 block)

---
 app/src/main/java/sudoku/Contrainte.java      |  5 ++++
 app/src/main/java/sudoku/ContrainteBloc.java  | 24 +++++++++++++++++++
 .../main/java/sudoku/ContrainteColonne.java   | 19 +++++++++++++++
 app/src/main/java/sudoku/ContrainteLigne.java | 19 +++++++++++++++
 4 files changed, 67 insertions(+)
 create mode 100644 app/src/main/java/sudoku/Contrainte.java
 create mode 100644 app/src/main/java/sudoku/ContrainteBloc.java
 create mode 100644 app/src/main/java/sudoku/ContrainteColonne.java
 create mode 100644 app/src/main/java/sudoku/ContrainteLigne.java

diff --git a/app/src/main/java/sudoku/Contrainte.java b/app/src/main/java/sudoku/Contrainte.java
new file mode 100644
index 0000000..141263b
--- /dev/null
+++ b/app/src/main/java/sudoku/Contrainte.java
@@ -0,0 +1,5 @@
+package sudoku;
+
+public interface Contrainte {
+    boolean estRespectee(Grille grille, Case c);
+}
diff --git a/app/src/main/java/sudoku/ContrainteBloc.java b/app/src/main/java/sudoku/ContrainteBloc.java
new file mode 100644
index 0000000..a0c27f9
--- /dev/null
+++ b/app/src/main/java/sudoku/ContrainteBloc.java
@@ -0,0 +1,24 @@
+package sudoku;
+
+import sudoku.core.Console;
+
+public class ContrainteBloc implements Contrainte {
+    @Override
+    public boolean estRespectee(Grille grille, Case c) {
+        int blocSize = (int) Math.sqrt(grille.getTaille());
+        int startRow = (c.getLigne() / blocSize) * blocSize;
+        int startCol = (c.getColonne() / blocSize) * blocSize;
+        Symbole symbole = c.getSymbole();
+        
+        for (int i = 0; i < blocSize; i++) {
+            for (int j = 0; j < blocSize; j++) {
+                Case currentCase = grille.getCase(startRow + i, startCol + j);
+                if (currentCase != c && currentCase.getSymbole() != null && currentCase.getSymbole().equals(symbole)) {
+                    Console.errorln("La contrainte de bloc n'est pas respectee: ligne=" + (startRow + i) + ", col=" + (startCol + j) + ", symbole=" + symbole);
+                    return false;
+                }
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/sudoku/ContrainteColonne.java b/app/src/main/java/sudoku/ContrainteColonne.java
new file mode 100644
index 0000000..c0744cd
--- /dev/null
+++ b/app/src/main/java/sudoku/ContrainteColonne.java
@@ -0,0 +1,19 @@
+package sudoku;
+
+import sudoku.core.Console;
+
+public class ContrainteColonne implements Contrainte {
+    @Override
+    public boolean estRespectee(Grille grille, Case c) {
+        int colonne = c.getColonne();
+        Symbole symbole = c.getSymbole();
+        for (int ligne = 0; ligne < grille.getTaille(); ligne++) {
+            Case currentCase = grille.getCase(ligne, colonne);
+            if (currentCase != c && currentCase.getSymbole() != null && currentCase.getSymbole().equals(symbole)) {
+                Console.errorln("La contrainte de colonne n'est pas respectee: ligne=" + ligne + ", col=" + colonne + ", symbole=" + symbole);
+                return false;
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/sudoku/ContrainteLigne.java b/app/src/main/java/sudoku/ContrainteLigne.java
new file mode 100644
index 0000000..4a3ca55
--- /dev/null
+++ b/app/src/main/java/sudoku/ContrainteLigne.java
@@ -0,0 +1,19 @@
+package sudoku;
+
+import sudoku.core.Console;
+
+public class ContrainteLigne implements Contrainte {
+    @Override
+    public boolean estRespectee(Grille grille, Case c) {
+        int ligne = c.getLigne();
+        Symbole symbole = c.getSymbole();
+        for (int col = 0; col < grille.getTaille(); col++) {
+            Case currentCase = grille.getCase(ligne, col);
+            if (currentCase != c && currentCase.getSymbole() != null && currentCase.getSymbole().equals(symbole)) {
+                Console.errorln("La contrainte de ligne n'est pas respectee: ligne=" + ligne + ", col=" + col + ", symbole=" + symbole);
+                return false;
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file