Book advanced data, optional series

db.c

@@ -38,22 +38,50 @@ static const char *const stmts[STMT__MAX] = {
   /* STMT_BOOK */
   "SELECT books.id AS id,title,series_index,name as series_name,series.id AS series_id FROM books LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book LEFT OUTER JOIN series ON series.id = books_series_link.series WHERE books.id = ?",
   /* STMT_BOOKS */
-  "SELECT books.id AS id,title FROM books LIMIT ?",
+  "SELECT books.id AS id,title,series_index,name as series_name,series.id AS series_id FROM books LEFT OUTER JOIN books_series_link ON books.id = books_series_link.book LEFT OUTER JOIN series ON series.id = books_series_link.series LIMIT ?",
 };
 
-void
-db_book_free(Book *b)
+static void
+db_series_unfill(Series *p)
 {
-  if (NULL == b)
+  if (NULL == p)
     return;
-  free(b->title);
-  //TODO free series
-  free(b->s.name);
-  free(b);
+  free(p->name);
+}
+
+void
+db_series_free(Series *p)
+{
+  db_series_unfill(p);
+  free(p);
+}
+
+static void
+db_book_unfill(Book *p)
+{
+  if (NULL == p)
+    return;
+  free(p->title);
+  db_series_unfill(&p->s);
+}
+
+void
+db_book_free(Book *p)
+{
+  db_book_unfill(p);
+  free(p);
+}
+
+void
+db_book_adv_free(BookAdv *p)
+{
+  db_book_unfill(&p->b);
+  //TODO free authors
+  free(p);
 }
 
 int
-db_books_load(struct kreq *r, Book **books, int limit)
+db_books_load(struct kreq *r, BookAdv **books, int limit)
 {
   if (limit < 0) {
     return 0;
@@ -65,9 +93,16 @@ db_books_load(struct kreq *r, Book **books, int limit)
             STMT_BOOKS);
   ksql_bind_int(stmt, 0, limit);
   while (KSQL_ROW == ksql_stmt_step(stmt)) {
-    books[i] = kcalloc(1, sizeof(Book));
-    books[i]->id = ksql_stmt_int(stmt, 0);
-    books[i]->title = kstrdup(ksql_stmt_str(stmt, 1));
+    books[i] = kcalloc(1, sizeof(BookAdv));
+    books[i]->b.id = ksql_stmt_int(stmt, 0);
+    books[i]->b.title = kstrdup(ksql_stmt_str(stmt, 1));
+    if ( ksql_stmt_isnull(stmt, 4) ) {
+      books[i]->b.s.id = -1;
+    } else {
+      books[i]->b.s_idx = ksql_stmt_int(stmt, 2);
+      books[i]->b.s.name = kstrdup(ksql_stmt_str(stmt, 3));
+      books[i]->b.s.id = ksql_stmt_int(stmt, 4);
+    }
     i++;
   }
   ksql_stmt_free(stmt);
@@ -91,14 +126,17 @@ db_book_load(struct kreq *r, int64_t id)
   book = kcalloc(1, sizeof(Book));
   book->id = ksql_stmt_int(stmt, 0);
   book->title = kstrdup(ksql_stmt_str(stmt, 1));
-  book->s_idx = ksql_stmt_int(stmt, 2);
-  book->s.name = kstrdup(ksql_stmt_str(stmt, 3));
-  book->s.id = ksql_stmt_int(stmt, 4);
+  if ( ksql_stmt_isnull(stmt, 4) ) {
+    book->s.id = -1;
+  } else {
+    book->s_idx = ksql_stmt_int(stmt, 2);
+    book->s.name = kstrdup(ksql_stmt_str(stmt, 3));
+    book->s.id = ksql_stmt_int(stmt, 4);
+  }
   ksql_stmt_free(stmt);
   return book;
 }
 
-
 /*
  * Open the database and stash the resulting handle in the d
  */

extern.h

@@ -33,7 +33,7 @@ typedef struct
 {
   int64_t   id;
   char     *title;
-  int       s_idx; /* series index */
+  int       s_idx; /* series index */ // FIXME pas un int
   Series    s;
 } Book;
 
@@ -49,19 +49,22 @@ typedef struct
 /*
  * A book. Advanced data: authors, tags.
  */
-struct book_adv
+typedef struct
 {
   Book b;
-  size_t autsize;
-  Author *authors;
+  Author *a;
+  size_t asize;
   // TODO tags
-};
+} BookAdv;
 
 __BEGIN_DECLS
 
 Book *db_book_load(struct kreq *r, int64_t id);
-int db_books_load(struct kreq *r, Book **books, int limit);
-void db_book_free(Book *b); // TODO series
+int db_books_load(struct kreq *r, BookAdv **books, int limit);
+void db_book_free(Book *p);
+void db_book_adv_free(BookAdv *p);
+
+void db_series_free(Series *p);
 
 void		 db_close(struct kreq *);
 int		 db_open(struct kreq *, const char *);

main.c

@@ -100,6 +100,13 @@ putbook(struct kjsonreq *req, Book *b)
   kjson_obj_open(req);
   kjson_putintp(req, "id", b->id);
   kjson_putstringp(req, "title", b->title);
+  if (b->s.id >= 0) {
+    kjson_objp_open(req, "series");
+    kjson_putintp(req, "id", b->s.id);
+    kjson_putstringp(req, "name", b->s.name);
+    kjson_putintp(req, "idx", b->s_idx);
+    kjson_obj_close(req);
+  }
   kjson_obj_close(req);
 }
 
@@ -128,11 +135,12 @@ sendbooks(struct kreq *r)
     db_book_free(b);
   } else {
     kjson_array_open(&req);
-    Book **books = kcalloc(10, sizeof(Book));
+    BookAdv **books = kcalloc(10, sizeof(BookAdv));
     res = db_books_load(r, books, 10);
     while (i < res) {
-      putbook(&req, books[i]);
-      db_book_free(books[i]);
+      Book b = books[i]->b;
+      putbook(&req, &b);
+      db_book_adv_free(books[i]);
       i++;
     }
     free(books);