#include "tree.h"

  void cons_tree(struct node ** ptr_tree, int val)

  {

    *ptr_tree = malloc(sizeof(struct node));
    (*ptr_tree)->val = val;
    (*ptr_tree)->fin = 0;
    (*ptr_tree)->nbr_fils=0;
    (*ptr_tree)->fils = malloc(sizeof(struct node*));
    (*ptr_tree)->fils[0]=NULL;

  }
  

  void mk_empty_tree(struct node **ptr_tree)
  {
    *ptr_tree = NULL;
  }

  int is_leaf(struct node *tree)
  {
    return tree->fin||tree->fils[0]==NULL;
  }

  void add(struct node **tab_ptr_tree, char val[],int taille, int fl)
  {
    if(tab_ptr_tree[fl]==NULL)cons_tree(&(tab_ptr_tree[fl]),val[0]+97);
    Node* noeudtest = tab_ptr_tree[fl];
    for(int i = 1;i<taille;i++)
      {
        int trouve = -1;
        for(int j=0;j<noeudtest->nbr_fils;j++)
  	{
  	  if(noeudtest->fils[j]->val==val[i])trouve=j;
  	}
        if(trouve==-1)
  	{	  
  	  //ajouter lettre
  	   noeudtest->nbr_fils++;
  	   noeudtest->fils = realloc(noeudtest->fils,(noeudtest->nbr_fils)*sizeof(struct node*));
  	   cons_tree(&(noeudtest->fils[(noeudtest->nbr_fils)-1]),val[i]);
  	   trouve = 0;
  	}
        
        noeudtest = noeudtest->fils[trouve];//on jump au noeud suivant
      }
    noeudtest->fin = 1;
  

  }

  int size(char val[])
  {
    int cpt = 0;
    while(val[cpt]!='\0')
      {
        cpt++;
      }
    return cpt;
  }
  
  

  void load_tree(FILE *fp, struct node **tab_ptr_tree)

  {
    //fl (first letter)

    char val[50];
    
    while(fscanf(fp, "%s",val)==1)
      {

        int taille = size(val);

        if(val[0]<97)val[0]+=32;
        val[0]-=97;

        add(tab_ptr_tree,val,taille,(int)val[0]);

      }
  
      //On peut tester la bonne ou mauvaise terminaison de la lecture
      if(feof(fp))    printf("Fin normal de lecture\n");
      if(ferror(fp))  printf("ERREUR de lecture\n");

  }

  void free_tree(struct node *ptr_tree)

  {

    for(int i=0;i<ptr_tree->nbr_fils;i++)
    {
      if(ptr_tree->fils[i]->nbr_fils!=0)free_tree(ptr_tree->fils[i]);
      free(ptr_tree->fils[i]);
    }
    //free(ptr_tree);
  }
  
  void free_dico(struct node **tab_ptr_tree)
  {
    for(int i=0;i<26;i++)
    {
      if(tab_ptr_tree[i]!=NULL)
      {
        free_tree(tab_ptr_tree[i]);
      }
    }

  }