Initial version upload

models/Vehicle.php

@@ -0,0 +1,70 @@
+<?php
+
+class Vehicle {
+    private PDO $db;
+    
+    public function __construct() {
+        $this->db = Database::getInstance();
+    }
+    
+    public function getAll(): array {
+        $stmt = $this->db->query("
+            SELECT v.*, 
+                   COUNT(m.id) as maintenance_count,
+                   MAX(m.date) as last_maintenance_date
+            FROM vehicles v
+            LEFT JOIN maintenance_items m ON v.id = m.vehicle_id
+            GROUP BY v.id
+            ORDER BY v.name ASC
+        ");
+        return $stmt->fetchAll();
+    }
+    
+    public function getById(int $id): ?array {
+        $stmt = $this->db->prepare("SELECT * FROM vehicles WHERE id = ?");
+        $stmt->execute([$id]);
+        $vehicle = $stmt->fetch();
+        return $vehicle ?: null;
+    }
+    
+    public function create(array $data): int {
+        $stmt = $this->db->prepare("
+            INSERT INTO vehicles (name, year, make, model, color, license_plate)
+            VALUES (?, ?, ?, ?, ?, ?)
+        ");
+        
+        $stmt->execute([
+            $data['name'],
+            $data['year'] ?? null,
+            $data['make'] ?? null,
+            $data['model'] ?? null,
+            $data['color'] ?? null,
+            $data['license_plate'] ?? null
+        ]);
+        
+        return (int)$this->db->lastInsertId();
+    }
+    
+    public function update(int $id, array $data): bool {
+        $stmt = $this->db->prepare("
+            UPDATE vehicles 
+            SET name = ?, year = ?, make = ?, model = ?, color = ?, license_plate = ?, updated_at = CURRENT_TIMESTAMP
+            WHERE id = ?
+        ");
+        
+        return $stmt->execute([
+            $data['name'],
+            $data['year'] ?? null,
+            $data['make'] ?? null,
+            $data['model'] ?? null,
+            $data['color'] ?? null,
+            $data['license_plate'] ?? null,
+            $id
+        ]);
+    }
+    
+    public function delete(int $id): bool {
+        $stmt = $this->db->prepare("DELETE FROM vehicles WHERE id = ?");
+        return $stmt->execute([$id]);
+    }
+}