Initial commit

backend/app/Models/BaseModel.php

@@ -0,0 +1,90 @@
+<?php
+
+namespace App\Models;
+
+use App\Core\Database;
+
+/**
+ * Base database model implementing generic active-record CRUD routines.
+ */
+abstract class BaseModel
+{
+    protected static string $table = '';
+    protected static string $primaryKey = 'id';
+
+    /**
+     * Retrieve all records
+     */
+    public static function all(): array
+    {
+        $table = static::$table;
+        return Database::select("SELECT * FROM {$table}");
+    }
+
+    /**
+     * Find a record by its primary key
+     *
+     * @param mixed $id
+     * @return array|null
+     */
+    public static function find($id): ?array
+    {
+        $table = static::$table;
+        $primaryKey = static::$primaryKey;
+        return Database::selectOne("SELECT * FROM {$table} WHERE {$primaryKey} = :id LIMIT 1", ['id' => $id]);
+    }
+
+    /**
+     * Insert a new record
+     *
+     * @param array $data Assocation array of columns and values
+     * @return string Last inserted primary key ID
+     */
+    public static function create(array $data): string
+    {
+        $table = static::$table;
+        $columns = implode(', ', array_keys($data));
+        $placeholders = ':' . implode(', :', array_keys($data));
+
+        $sql = "INSERT INTO {$table} ({$columns}) VALUES ({$placeholders})";
+        return Database::insert($sql, $data);
+    }
+
+    /**
+     * Update an existing record
+     *
+     * @param mixed $id Primary key ID
+     * @param array $data Associative array of changes
+     * @return int Affected rows count
+     */
+    public static function update($id, array $data): int
+    {
+        $table = static::$table;
+        $primaryKey = static::$primaryKey;
+
+        $sets = [];
+        foreach (array_keys($data) as $column) {
+            $sets[] = "{$column} = :{$column}";
+        }
+        $setSql = implode(', ', $sets);
+
+        $sql = "UPDATE {$table} SET {$setSql} WHERE {$primaryKey} = :_id";
+        
+        $params = $data;
+        $params['_id'] = $id;
+
+        return Database::execute($sql, $params);
+    }
+
+    /**
+     * Delete record by ID
+     */
+    public static function delete($id): int
+    {
+        $table = static::$table;
+        $primaryKey = static::$primaryKey;
+
+        $sql = "DELETE FROM {$table} WHERE {$primaryKey} = :id";
+        return Database::execute($sql, ['id' => $id]);
+    }
+}