| 1 | <?php |
| 2 | |
| 3 | require_once __DIR__ . "/ventaEnCapturaAgrega.php"; |
| 4 | |
| 5 | class Bd |
| 6 | { |
| 7 | |
| 8 | private static ?PDO $pdo = null; |
| 9 | |
| 10 | public static function pdo(): PDO |
| 11 | { |
| 12 | if (self::$pdo === null) { |
| 13 | self::$pdo = new PDO( |
| 14 | |
| 15 | "sqlite:srvcompras.db", |
| 16 | |
| 17 | null, |
| 18 | |
| 19 | null, |
| 20 | |
| 21 | [PDO::ATTR_PERSISTENT => false, PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION] |
| 22 | ); |
| 23 | |
| 24 | self::$pdo->exec( |
| 25 | 'CREATE TABLE IF NOT EXISTS VENTA ( |
| 26 | VENT_ID INTEGER, |
| 27 | VENT_EN_CAPTURA INTEGER NOT NULL, |
| 28 | CONSTRAINT VENT_PK |
| 29 | PRIMARY KEY(VENT_ID) |
| 30 | )' |
| 31 | ); |
| 32 | self::$pdo->exec( |
| 33 | 'CREATE TABLE IF NOT EXISTS PRODUCTO ( |
| 34 | PROD_ID INTEGER, |
| 35 | PROD_NOMBRE TEXT NOT NULL, |
| 36 | PROD_EXISTENCIAS REAL NOT NULL, |
| 37 | PROD_PRECIO REAL NOT NULL, |
| 38 | CONSTRAINT PROD_PK |
| 39 | PRIMARY KEY(PROD_ID), |
| 40 | CONSTRAINT PROD_NOM_UNQ |
| 41 | UNIQUE(PROD_NOMBRE), |
| 42 | CONSTRAINT PROD_NOM_NV |
| 43 | CHECK(LENGTH(PROD_NOMBRE) > 0) |
| 44 | )' |
| 45 | ); |
| 46 | self::$pdo->exec( |
| 47 | 'CREATE TABLE IF NOT EXISTS DET_VENTA ( |
| 48 | VENT_ID INTEGER NOT NULL, |
| 49 | PROD_ID INTEGER NOT NULL, |
| 50 | DTV_CANTIDAD REAL NOT NULL, |
| 51 | DTV_PRECIO REAL NOT NULL, |
| 52 | CONSTRAINT DTV_PK |
| 53 | PRIMARY KEY (VENT_ID, PROD_ID), |
| 54 | CONSTRAINT DTV_VENT_FK |
| 55 | FOREIGN KEY (VENT_ID) REFERENCES VENTA(VENT_ID), |
| 56 | CONSTRAINT DTV_PROD_FK |
| 57 | FOREIGN KEY (PROD_ID) REFERENCES PRODUCTO(PROD_ID) |
| 58 | )' |
| 59 | ); |
| 60 | |
| 61 | $cantidadDeProductos = |
| 62 | self::$pdo->query("SELECT COUNT(PROD_ID) FROM PRODUCTO")->fetchColumn(); |
| 63 | |
| 64 | if ($cantidadDeProductos === 0) { |
| 65 | self::$pdo->exec( |
| 66 | "INSERT INTO PRODUCTO |
| 67 | (PROD_NOMBRE, PROD_EXISTENCIAS, PROD_PRECIO) |
| 68 | VALUES |
| 69 | ('Sandwich', 50, 15), |
| 70 | ('Hot dog', 40, 30), |
| 71 | ('Hamburguesa', 30, 40)" |
| 72 | ); |
| 73 | } |
| 74 | |
| 75 | $cantidadDeVentas = |
| 76 | self::$pdo->query("SELECT COUNT(VENT_ID) FROM VENTA")->fetchColumn(); |
| 77 | |
| 78 | if ($cantidadDeVentas === 0) { |
| 79 | ventaEnCapturaAgrega(self::$pdo); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | return self::$pdo; |
| 84 | } |
| 85 | } |
| 86 | |