Passed
Pull Request — 2.x (#72)
by Maxim
14:18
created

ShowChanges::describeIndexes()   A

Complexity

Conditions 4
Paths 8

Size

Total Lines 16
Code Lines 10

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 4
eloc 10
c 1
b 0
f 0
nc 8
nop 1
dl 0
loc 16
rs 9.9332
1
<?php
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declare(strict_types=1);
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namespace Cycle\Schema\Generator;
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use Cycle\Database\Schema\ComparatorInterface;
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use Cycle\Schema\GeneratorInterface;
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use Cycle\Schema\Registry;
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use Cycle\Database\Schema\AbstractTable;
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use Symfony\Component\Console\Output\OutputInterface;
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final class ShowChanges implements GeneratorInterface
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{
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    private array $changes = [];
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    public function __construct(
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        private OutputInterface $output,
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    ) {
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    }
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    public function run(Registry $registry): Registry
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    {
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        $this->changes = [];
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        foreach ($registry->getIterator() as $e) {
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            if ($registry->hasTable($e)) {
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                $table = $registry->getTableSchema($e);
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                if ($this->hasTableChanges($table)) {
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                    $key = $registry->getDatabase($e) . ':' . $registry->getTable($e);
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                    $this->changes[$key] = [
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                        'database' => $registry->getDatabase($e),
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                        'table' => $registry->getTable($e),
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                        'schema' => $table,
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                    ];
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                }
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            }
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        }
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        if (!$this->hasChanges()) {
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            $this->output->writeln('<fg=yellow>No database changes has been detected</fg=yellow>');
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            return $registry;
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        }
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        $this->output->writeln('<info>Schema changes:</info>');
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        foreach ($this->changes as $change) {
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            $this->output->write(\sprintf('• <fg=cyan>%s.%s</fg=cyan>', $change['database'], $change['table']));
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            $this->describeChanges($change['schema']);
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        }
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        return $registry;
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    }
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    public function hasChanges(): bool
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    {
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        return $this->changes !== [];
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    }
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    private function describeChanges(AbstractTable $table): void
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    {
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        if (!$table->exists()) {
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            $this->output->writeln('    - create table');
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            return;
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        }
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        if ($table->getStatus() === AbstractTable::STATUS_DECLARED_DROPPED) {
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            $this->output->writeln('    - drop table');
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            return;
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        }
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        if (!$this->output->isVerbose()) {
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            $this->output->writeln(
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                \sprintf(
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                    ': <fg=green>%s</fg=green> change(s) detected',
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                    $this->numChanges($table),
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                ),
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            );
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            return;
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        }
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        $this->output->write("\n");
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        $cmp = $table->getComparator();
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        $this->describeColumns($cmp);
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        $this->describeIndexes($cmp);
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        $this->describeFKs($cmp);
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    }
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    private function describeColumns(ComparatorInterface $cmp): void
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    {
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        foreach ($cmp->addedColumns() as $column) {
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            $this->output->writeln("    - add column <fg=yellow>[{$column->getName()}]</fg=yellow>");
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        }
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        foreach ($cmp->droppedColumns() as $column) {
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            $this->output->writeln("    - drop column <fg=yellow>[{$column->getName()}]</fg=yellow>");
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        }
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        foreach ($cmp->alteredColumns() as $column) {
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            $column = $column[0];
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            $this->output->writeln("    - alter column <fg=yellow>[{$column->getName()}]</fg=yellow>");
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        }
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    }
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    private function describeIndexes(ComparatorInterface $cmp): void
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    {
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        foreach ($cmp->addedIndexes() as $index) {
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            $index = \implode(', ', $index->getColumns());
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            $this->output->writeln("    - add index on <fg=yellow>[{$index}]</fg=yellow>");
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        }
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        foreach ($cmp->droppedIndexes() as $index) {
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            $index = \implode(', ', $index->getColumns());
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            $this->output->writeln("    - drop index on <fg=yellow>[{$index}]</fg=yellow>");
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        }
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        foreach ($cmp->alteredIndexes() as $index) {
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            $index = $index[0];
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            $index = \implode(', ', $index->getColumns());
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            $this->output->writeln("    - alter index on <fg=yellow>[{$index}]</fg=yellow>");
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        }
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    }
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    private function describeFKs(ComparatorInterface $cmp): void
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    {
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        foreach ($cmp->addedForeignKeys() as $fk) {
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            $fkColumns = \implode(', ', $fk->getColumns());
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            $this->output->writeln("    - add foreign key on <fg=yellow>[{$fkColumns}]</fg=yellow>");
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        }
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        foreach ($cmp->droppedForeignKeys() as $fk) {
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            $fkColumns = \implode(', ', $fk->getColumns());
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            $this->output->writeln("    - drop foreign key on <fg=yellow>[{$fkColumns}]</fg=yellow>");
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        }
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        foreach ($cmp->alteredForeignKeys() as $fk) {
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            $fk = $fk[0];
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            $fkColumns = \implode(', ', $fk->getColumns());
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            $this->output->writeln("    - alter foreign key on <fg=yellow>[{$fkColumns}]</fg=yellow>");
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        }
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    }
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    private function numChanges(AbstractTable $table): int
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    {
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        $cmp = $table->getComparator();
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        return \count($cmp->addedColumns())
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            + \count($cmp->droppedColumns())
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            + \count($cmp->alteredColumns())
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            + \count($cmp->addedIndexes())
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            + \count($cmp->droppedIndexes())
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            + \count($cmp->alteredIndexes())
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            + \count($cmp->addedForeignKeys())
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            + \count($cmp->droppedForeignKeys())
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            + \count($cmp->alteredForeignKeys());
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    }
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    private function hasTableChanges(AbstractTable $table): bool
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    {
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        return $table->getComparator()->hasChanges()
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            || !$table->exists()
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            || $table->getStatus() === AbstractTable::STATUS_DECLARED_DROPPED;
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    }
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}
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