42 lines
1.2 KiB
PHP
42 lines
1.2 KiB
PHP
<?php
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namespace MintyPHP\App;
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use RuntimeException;
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// Minimal DI container: factories are registered with set() and resolved lazily on first get().
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// Each service is instantiated at most once — get() returns the same instance on every call.
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final class AppContainer
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{
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/** @var array<string, callable(self): mixed> */
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private array $bindings = [];
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/** @var array<string, mixed> */
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private array $instances = [];
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public function set(string $id, callable $factory): void
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{
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$this->bindings[$id] = $factory;
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}
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public function has(string $id): bool
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{
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return array_key_exists($id, $this->instances) || array_key_exists($id, $this->bindings);
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}
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public function get(string $id): mixed
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{
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if (array_key_exists($id, $this->instances)) {
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return $this->instances[$id];
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}
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if (!array_key_exists($id, $this->bindings)) {
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throw new RuntimeException('Service not bound: ' . $id);
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}
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// Resolve, cache, and return — factory receives the container for its own dependencies.
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$this->instances[$id] = ($this->bindings[$id])($this);
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return $this->instances[$id];
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}
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}
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