79 lines
2.5 KiB
PHP
79 lines
2.5 KiB
PHP
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<?php
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namespace DatabaseHelper\classes;
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use DatabaseHelper\enums\ColumnTypes;
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use DatabaseHelper\interfaces\QueryBuilder;
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use DatabaseHelper\interfaces\TableBlueprint;
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use InvalidArgumentException;
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class Query implements QueryBuilder
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{
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private TableBlueprint $table;
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private array $columns = ['*'];
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private array $conditions = [];
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/**
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* @var ColumnTypes[]
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*/
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private array $columnTypes = [];
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public function __construct(TableBlueprint $table) {
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$this->columnTypes = array_map(fn($col) => $col['colType'], $table->columns);
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$this->table = $table;
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}
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public function select(string ...$cols): QueryBuilder {
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if (!empty($cols))
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$this->columns = $cols;
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return $this;
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}
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public function where(string $col, string $operator, mixed $val): QueryBuilder {
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return $this->addCondition($col, $operator, $val, "AND");
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}
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public function andWhere(string $col, string $operator, mixed $val): QueryBuilder {
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return $this->addCondition($col, $operator, $val, "AND");
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}
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public function orWhere(string $col, string $operator, mixed $val): QueryBuilder {
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return $this->addCondition($col, $operator, $val, "OR");
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}
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private function addCondition(string $colName, string $operator, mixed $val, string $prefix): QueryBuilder {
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if (!isset($this->columnTypes[$colName]))
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throw new InvalidArgumentException("Unknown column: $colName");
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$columnType = $this->columnTypes[$colName];
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$castedValue = $columnType->dbCast($val);
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if (!empty($this->conditions))
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$this->conditions[] = $prefix;
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$this->conditions[] = "$colName $operator $castedValue";
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return $this;
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}
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public function toSql(): string {
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$columns = implode(", ", $this->columns);
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$table = $this->table->tableName;
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$whereClause = !empty($this->conditions) ? " WHERE " . implode(" ", $this->conditions) : "";
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return esc_sql("SELECT $columns FROM $table$whereClause");
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}
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public function query(): array {
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global $wpdb;
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$query = $this->toSql();
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$results = $wpdb->get_results($wpdb->prepare($query), ARRAY_A);
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return $this->castResults($results);
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}
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private function castResults(array $results): array {
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foreach ($results as &$row)
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foreach ($row as $column => &$value)
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if (isset($this->columnTypes[$column]))
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$value = $this->columnTypes[$column]->valCast($value);
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return $results;
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}
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}
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