Fix SQL casing and improve error handling

internal/store/cake.go

@@ -19,7 +19,7 @@ func (s *Store) cakeCount() int {
 	if err != nil {
 		return out
 	}
-	rows.Close()
+	defer rows.Close()
 	_ = rows.Next()
 	_ = rows.Scan(&out)
 	return out
@@ -53,23 +53,19 @@ func (s *Store) searchCakes(id int) (int, error) {
 		}
 		return i, nil
 	}
-	return -1, errors.New("cake not found")
+	return 0, errors.New("cake not found")
 }
 
 func (s *Store) GetCake(id int) (Cake, error) {
 	if id <= 0 {
 		return Cake{}, errors.New("Invalid cake id")
 	}
-	if len(s.cakes) < id {
-		i, err := s.searchCakes(id)
-		return s.cakes[i], err
-	}
-	if s.cakes[id-1].ID != id {
-		i, err := s.searchCakes(id)
-		return s.cakes[i], err
-	}
 
-	return s.cakes[id-1], nil
+	i, err := s.searchCakes(id)
+	if err != nil {
+		return Cake{}, err
+	}
+	return s.cakes[i], err
 }
 
 func (s *Store) GetCakes() ([]Cake, error) {

internal/store/migrations.go

@@ -24,7 +24,7 @@ func (s *Store) loadFile(file string) {
 	query, _ := migrations.ReadFile("migrations/" + file)
 	_, err = s.db.Exec(string(query))
 	if err != nil {
-		log.Fatal("error executing migration: ", file)
+		log.Fatal("error executing migration: ", file, err)
 	}
 }
 

internal/store/migrations/1.sql

@@ -23,4 +23,4 @@ create table ordered_cake (
     primary key (customer_order, cake)
 );
 
-PRAGMA user_version = 1;
+pragma user_version = 1;

internal/store/migrations/2.sql

@@ -5,4 +5,4 @@ create table session (
     lastAccess text
 );
 
-PRAGMA user_version = 2;
+pragma user_version = 2;

internal/store/migrations/3.sql

@@ -4,4 +4,4 @@ add column category text;
 alter table cake
 add column availability text;
 
-PRAGMA user_version = 3;
+pragma user_version = 3;

internal/store/migrations/4.sql

@@ -0,0 +1,9 @@
+update cake
+set
+    category = "common";
+
+update cake
+set
+    availability = "avaiable";
+
+pragma user_version = 4;