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<?php

namespace Greg\Orm;

use Greg\Orm\Query\SelectQuery;

trait TableTrait

{

use QueryBuilderTrait;

protected $name;

protected $alias;

protected $primaryKey;

protected $autoIncrement;

protected $uniqueKeys = [];

public function name(): string

{

if (!$this->name) {

$this->name = (new \ReflectionClass($this))->getShortName();

}

return $this->name;

}

public function alias(): ?string

{

return $this->alias;

}

public function primaryKey(): ?array

{

return $this->primaryKey;

}

public function autoIncrement(): ?string

{

return $this->autoIncrement;

}

public function uniqueKeys(): array

{

$keys = (array) $this->uniqueKeys;

foreach ($keys as &$key) {

$key = (array) $key;

}

unset($key);

return $keys;

}

public function firstUniqueKey(): array

{

if ($primary = $this->primaryKey()) {

return $primary;

}

if ($this->uniqueKeys) {

reset($this->uniqueKeys);

return (array) $this->uniqueKeys[key($this->uniqueKeys)];

}

throw new \Exception('No unique keys found in `' . $this->name() . '`.');

}

public function describe(): array

{

return $this->connection()->describe($this->name());

}

public function fetch(): ?array

{

[$sql, $params] = $this->selectQueryInstanceToSql();

return $this->connection()->sqlFetch($sql, $params);

}

public function fetchOrFail(): array

{

if (!$record = $this->fetch()) {

throw new SqlException('Record not found.');

}

return $record;

}

public function fetchAll(): array

{

[$sql, $params] = $this->selectQueryInstanceToSql();

return $this->connection()->sqlFetchAll($sql, $params);

}

public function generate(?int $chunkSize = null): \Generator

{

if ($chunkSize) {

yield from $this->selectQueryInstance()->selectQuery()->generate($chunkSize);

} else {

[$sql, $params] = $this->selectQueryInstanceToSql();

yield from $this->connection()->sqlGenerate($sql, $params);

}

}

public function generateInChunks(int $chunkSize): \Generator

{

yield from $this->selectQueryInstance()->selectQuery()->generateInChunks($chunkSize);

}

public function fetchColumn(string $column = '0'): string

{

[$sql, $params] = $this->selectQueryInstanceToSql();

return $this->connection()->sqlFetchColumn($sql, $params, $column);

}

public function fetchAllColumn(string $column = '0'): array

{

[$sql, $params] = $this->selectQueryInstanceToSql();

return $this->connection()->sqlFetchAllColumn($sql, $params, $column);

}

public function fetchPairs(string $key = '0', string $value = '1'): array

{

[$sql, $params] = $this->selectQueryInstanceToSql();

return $this->connection()->sqlFetchPairs($sql, $params, $key, $value);

}

public function fetchCount(string $column = '*', string $alias = null): int

{

if ($this->query) {

return $this->clearSelect()->selectCount($column, $alias)->fetchColumn();

}

return $this->connection()->sqlFetchColumn($this->connection()->dialect()->selectCount($column, $alias));

}

public function fetchMax(string $column, string $alias = null): int

{

if ($this->query) {

return $this->clearSelect()->selectMax($column, $alias)->fetchColumn();

}

return $this->connection()->sqlFetchColumn($this->connection()->dialect()->selectMax($column, $alias));

}

public function fetchMin(string $column, string $alias = null): int

{

if ($this->query) {

return $this->clearSelect()->selectMin($column, $alias)->fetchColumn();

}

return $this->connection()->sqlFetchColumn($this->connection()->dialect()->selectMin($column, $alias));

}

public function fetchAvg(string $column, string $alias = null): float

{

if ($this->query) {

return $this->clearSelect()->selectAvg($column, $alias)->fetchColumn();

}

return $this->connection()->sqlFetchColumn($this->connection()->dialect()->selectAvg($column, $alias));

}

public function fetchSum(string $column, string $alias = null): string

{

if ($this->query) {

return $this->clearSelect()->selectSum($column, $alias)->fetchColumn();

}

return $this->connection()->sqlFetchColumn($this->connection()->dialect()->selectSum($column, $alias));

}

public function exists(): bool

{

return (bool) $this->clearSelect()->selectRaw(1)->limit(1)->fetchColumn();

}

public function update(array $columns = []): int

{

[$sql, $params] = $this->setValues($columns)->toSql();

return $this->connection()->sqlExecute($sql, $params);

}

public function insert(array $record): int

{

[$sql, $params] = $this->newInsertQuery()->data($record)->toSql();

return $this->connection()->sqlExecute($sql, $params);

}

public function insertSelect(array $columns, SelectQuery $query): int

{

[$sql, $params] = $this->newInsertQuery()->columns($columns)->select($query)->toSql();

return $this->connection()->sqlExecute($sql, $params);

}

public function insertForEach(string $column, array $values, array $data = []): int

{

$count = 0;

foreach ($values as $value) {

$count += $this->insert([$column => $value] + $data);

}

return $count;

}

public function delete(string ...$tables)

{

$instance = $this->deleteQueryInstance();

if ($tables) {

$instance->rowsFrom(...$tables);

}

[$sql, $params] = $instance->toSql();

return $this->connection()->sqlExecute($sql, $params);

}

public function erase($primary)

{

$query = $this->newDeleteQuery()->whereMultiple($this->combinePrimaryKey($primary));

[$sql, $params] = $query->toSql();

return $this->connection()->sqlExecute($sql, $params);

}

public function truncate()

{

return $this->connection()->truncate($this->name());

}

protected function combinePrimaryKey($value)

{

$value = (array) $value;

$keys = $this->primaryKey();

if (count($keys) !== count($value)) {

throw new \Exception('Unique keys count should be the same as values count.');

}

return array_combine($keys, $value);

}

private function selectQueryInstanceToSql()

{

if ($this->query) {

return $this->selectQueryInstance()->toSql();

}

return [$this->connection()->dialect()->selectAll($this->name()), []];

}

}