feat: show resolve logs

app/src/main/java/sudoku/io/ConsoleInterface.java

@@ -227,7 +227,7 @@ public class ConsoleInterface {
                 saveMultiDoku(doku);
                 break;
             case "solution":
-                solve(doku);
+                solve(doku, listSymbols, width, height);
                 break;
             case "exit":
                 exit();
@@ -238,21 +238,52 @@ public class ConsoleInterface {
         }
     }
 
-    private void solve(MultiDoku doku){
-        System.out.println("Pick a solver to use : random ('random', default), human ('human') or mixed solver ('mixed').");
+    private void applyStep(SolverStep step) {
+        step.getCell().setSymbolIndex(step.getNewValue());
+    }
+
+    private boolean showStep(MultiDoku doku, List<String> listSymbols, int width, int height, SolverStep step) {
+        System.out.println("Here is the step : \n");
+        showMultidoku(doku, listSymbols, width, height);
+        applyStep(step);
+        System.out.println("\nTurns into :\n");
+        showMultidoku(doku, listSymbols, width, height);
+        System.out.println("Do you want to see the next step ? (y/n, default n)");
+        return reader.next().equals("y");
+    }
+
+    private void showSolveSteps(MultiDoku doku, List<String> listSymbols, int width, int height, List<SolverStep> steps) {
+        System.out.println("Would you like to see the steps of the solver ? (y/n, default n)");
+        doku.getStateManager().popState();
         switch (reader.next()) {
-            case "human":
-                new HumanSolver().solve(doku);
-                break;
-            case "mixed":
-                new MixedSolver().solve(doku);
+            case "y":
+                int stepCount = 0;
+                while(stepCount < steps.size() && showStep(doku, listSymbols, width, height, steps.get(stepCount))){stepCount++;}
                 break;
+        
             default:
-                new RandomSolver().solve(doku);
                 break;
         }
     }
 
+    private void solve(MultiDoku doku, List<String> listSymbols, int width, int height){
+        System.out.println("Pick a solver to use : random ('random', default), human ('human') or mixed solver ('mixed').");
+        List<SolverStep> steps = new ArrayList<>();
+        doku.getStateManager().pushState();
+        switch (reader.next()) {
+            case "human":
+                new HumanSolver().solve(doku, steps);
+                break;
+            case "mixed":
+                new MixedSolver().solve(doku, steps);
+                break;
+            default:
+                new RandomSolver().solve(doku, steps);
+                break;
+        }
+        showSolveSteps(doku, listSymbols, width, height, steps);
+    }
+
     private void play(MultiDoku doku, List<String> listSymbols, int width, int height) {
         int x, y;
         RenderableMultidoku rdoku = RenderableMultidoku.fromMultidoku(doku);