move from old repository

Update.php

@@ -0,0 +1,69 @@
+<?php
+namespace DatabaseHelper;
+
+use DatabaseHelper\enums\Type;
+use DatabaseHelper\enums\Operator;
+use InvalidArgumentException;
+
+class Update
+{
+    use Conditionable;
+
+    protected Schema $table;
+    protected array $values = [];
+
+    public function __construct(Schema $table) {
+        $this->table = $table;
+    }
+
+    /**
+     * Sets a new value for a column.
+     * @param string $col Column name.
+     * @param mixed $val Value to set.
+     * @return self Current instance for method chaining.
+     * @throws InvalidArgumentException
+     */
+    public function set(string $col, mixed $val): self {
+        $this->table->requireColumn($col);
+
+        $columnType = $this->table->columnType($col);
+        $castedValue = $columnType->dbCast($val);
+        $this->values[$col] = $castedValue;
+        return $this;
+    }
+
+    /**
+     * Generates the SQL statement.
+     * @return string SQL query.
+     * @throws InvalidArgumentException
+     */
+    public function toSql(): string {
+        if (empty($this->values))
+            throw new InvalidArgumentException("No values have been set for the Update.");
+
+        $table = $this->table->name;
+        $setParts = [];
+        foreach ($this->values as $col => $value)
+            $setParts[] = "$col = $value";
+        $setClause = implode(", ", $setParts);
+
+        // FINAL SQL STATEMENT
+        $sqlStatement = "UPDATE $table SET $setClause";
+        if($this->isConditioned()) {
+            $whereClause = $this->combineConditions();
+            $sqlStatement .= " WHERE $whereClause";
+        }
+        return esc_sql($sqlStatement);
+    }
+
+    /**
+     * Executes the SQL UPDATE query.
+     * @return bool Returns true on success.
+    */
+    public function update(): bool {
+        global $wpdb;
+        $query = $this->toSql();
+        $result = $wpdb->query($query);
+        return boolval($result);
+    }
+}