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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Celemas\Boiler; |
| 6 | |
| 7 | use Celemas\Boiler\Contract\Wrapper; |
| 8 | use Celemas\Boiler\Exception\RuntimeException; |
| 9 | use Celemas\Boiler\Proxy\ObjectProxy; |
| 10 | use Celemas\Boiler\Proxy\Proxy; |
| 11 | use Celemas\Boiler\Proxy\StringProxy; |
| 12 | use Closure; |
| 13 | use Stringable; |
| 14 | |
| 15 | /** @api */ |
| 16 | abstract class Context |
| 17 | { |
| 18 | /** @var array<array-key, mixed>|null */ |
| 19 | private ?array $wrappedContext = null; |
| 20 | protected readonly Wrapper $wrapper; |
| 21 | private readonly bool $hasTrusted; |
| 22 | |
| 23 | /** |
| 24 | * @param list<class-string> $trusted |
| 25 | */ |
| 26 | public function __construct( |
| 27 | protected readonly BaseTemplate $template, |
| 28 | protected array $context, |
| 29 | public readonly array $trusted, |
| 30 | public readonly bool $autoescape, |
| 31 | ) { |
| 32 | $this->wrapper = $template->engine->wrapper(); |
| 33 | $this->hasTrusted = $trusted !== []; |
| 34 | } |
| 35 | |
| 36 | public function __call(string $name, array $args): mixed |
| 37 | { |
| 38 | $method = $this->template->methods()->get($name); |
| 39 | |
| 40 | /** @var array<array-key, mixed> $args */ |
| 41 | $args = $this->unwrap($args); |
| 42 | |
| 43 | return $this->templateValue(($method->callable)(...$args), safe: $method->safe); |
| 44 | } |
| 45 | |
| 46 | public function get(array $values = []): array |
| 47 | { |
| 48 | if (!$this->autoescape) { |
| 49 | return $values === [] |
| 50 | ? $this->context |
| 51 | : array_merge($this->context, $values); |
| 52 | } |
| 53 | |
| 54 | if ($values === []) { |
| 55 | return $this->wrappedContext(); |
| 56 | } |
| 57 | |
| 58 | return array_merge($this->wrappedContext(), $this->wrapAll($values)); |
| 59 | } |
| 60 | |
| 61 | /** |
| 62 | * @param array<array-key, mixed> $values |
| 63 | * @return array<array-key, mixed> |
| 64 | */ |
| 65 | protected function wrapAll(array $values): array |
| 66 | { |
| 67 | $wrapped = []; |
| 68 | |
| 69 | /** @var mixed $value */ |
| 70 | foreach ($values as $key => $value) { |
| 71 | if ($value instanceof Proxy) { |
| 72 | $wrapped[$key] = $value; |
| 73 | |
| 74 | continue; |
| 75 | } |
| 76 | |
| 77 | if ($this->hasTrusted && is_object($value)) { |
| 78 | foreach ($this->trusted as $trustedClass) { |
| 79 | if (!$value instanceof $trustedClass) { |
| 80 | continue; |
| 81 | } |
| 82 | |
| 83 | $wrapped[$key] = $value; |
| 84 | |
| 85 | continue 2; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /** @psalm-suppress MixedAssignment wrapper returns mixed by design */ |
| 90 | $wrapped[$key] = $this->wrapper->wrap($value); |
| 91 | } |
| 92 | |
| 93 | return $wrapped; |
| 94 | } |
| 95 | |
| 96 | public function unwrap(mixed $value): mixed |
| 97 | { |
| 98 | return $this->wrapper->unwrap($value); |
| 99 | } |
| 100 | |
| 101 | public function add(string $key, mixed $value): mixed |
| 102 | { |
| 103 | $this->context[$key] = $value; |
| 104 | $this->wrappedContext = null; |
| 105 | |
| 106 | return $this->templateValue($value); |
| 107 | } |
| 108 | |
| 109 | public function escape( |
| 110 | StringProxy|ObjectProxy|string|Stringable $value, |
| 111 | ?string $escaper = null, |
| 112 | ): string { |
| 113 | if ($value instanceof StringProxy) { |
| 114 | return $this->wrapper->escape($value->unwrap(), $escaper); |
| 115 | } |
| 116 | |
| 117 | if ($value instanceof ObjectProxy) { |
| 118 | $value = $value->unwrap(); |
| 119 | |
| 120 | if (!$value instanceof Stringable) { |
| 121 | throw new RuntimeException('Value cannot be escaped as string'); |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | return $this->wrapper->escape((string) $value, $escaper); |
| 126 | } |
| 127 | |
| 128 | public function wrap(mixed $value): mixed |
| 129 | { |
| 130 | return $this->wrapper->wrap($value); |
| 131 | } |
| 132 | |
| 133 | /** @return array<array-key, mixed> */ |
| 134 | private function wrappedContext(): array |
| 135 | { |
| 136 | return $this->wrappedContext ??= $this->wrapAll($this->context); |
| 137 | } |
| 138 | |
| 139 | private function templateValue(mixed $value, bool $safe = false): mixed |
| 140 | { |
| 141 | if (!$this->autoescape) { |
| 142 | return $this->wrapper->unwrap($value); |
| 143 | } |
| 144 | |
| 145 | if (!$safe) { |
| 146 | return $this->wrapper->wrap($value); |
| 147 | } |
| 148 | |
| 149 | if ($value instanceof StringProxy) { |
| 150 | return StringProxy::safe($value->unwrap(), $this->wrapper); |
| 151 | } |
| 152 | |
| 153 | if (is_string($value) || $value instanceof Stringable) { |
| 154 | return StringProxy::safe((string) $value, $this->wrapper); |
| 155 | } |
| 156 | |
| 157 | throw new RuntimeException('Safe template methods must return string or Stringable values'); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * @param non-empty-string $path |
| 162 | */ |
| 163 | public function layout(string $path, array $context = []): void |
| 164 | { |
| 165 | $this->template->setLayout(new LayoutSpec($path, $this->location(), $context)); |
| 166 | } |
| 167 | |
| 168 | /** |
| 169 | * Includes another template into the current template. |
| 170 | * |
| 171 | * If no context is passed it shares the context of the calling template. |
| 172 | * |
| 173 | * The optional slot is a block of markup the inserted template can place, |
| 174 | * and repeat, by calling `$this->slot([...])`. A closure receives the per-call |
| 175 | * data as its argument and either echoes or returns markup. A `Slot::template()` |
| 176 | * slot renders another template with the per-call data merged into its context. |
| 177 | * Slot values are raw, so escape them like any other template data. |
| 178 | * |
| 179 | * @param non-empty-string $path |
| 180 | */ |
| 181 | public function insert(string $path, array $context = [], Closure|Slot|null $slot = null): void |
| 182 | { |
| 183 | $path = $this->template->engine->resolve($path); |
| 184 | $template = new Template( |
| 185 | $path, |
| 186 | sections: $this->template->sections, |
| 187 | engine: $this->template->engine, |
| 188 | ); |
| 189 | |
| 190 | $template->setMethods($this->template->methods()); |
| 191 | $template->setSlot($slot, $this, $this->location()); |
| 192 | |
| 193 | echo |
| 194 | $this->autoescape |
| 195 | ? $template->renderEscaped($this->get($context), $this->trusted) |
| 196 | : $template->renderUnescaped($this->get($context), $this->trusted) |
| 197 | ; |
| 198 | } |
| 199 | |
| 200 | /** |
| 201 | * Renders the slot passed to this template via `insert(..., slot: ...)`. |
| 202 | * |
| 203 | * Call it once for a simple slot, or once per row to repeat the block with |
| 204 | * different data. Throws when the template was inserted without a slot; |
| 205 | * guard with `hasSlot()` when a slot is optional. |
| 206 | * |
| 207 | * @param array<array-key, mixed> $data |
| 208 | */ |
| 209 | public function slot(array $data = []): void |
| 210 | { |
| 211 | echo |
| 212 | ($this->template->slot() ?? throw new RuntimeException( |
| 213 | 'No slot was provided for this template', |
| 214 | location: $this->location(), |
| 215 | ))->render($data) |
| 216 | ; |
| 217 | } |
| 218 | |
| 219 | public function hasSlot(): bool |
| 220 | { |
| 221 | return $this->template->slot() !== null; |
| 222 | } |
| 223 | |
| 224 | public function begin(string $name): void |
| 225 | { |
| 226 | $this->template->sections->begin($name, $this->location()); |
| 227 | } |
| 228 | |
| 229 | public function append(string $name): void |
| 230 | { |
| 231 | $this->template->sections->append($name, $this->location()); |
| 232 | } |
| 233 | |
| 234 | public function prepend(string $name): void |
| 235 | { |
| 236 | $this->template->sections->prepend($name, $this->location()); |
| 237 | } |
| 238 | |
| 239 | public function end(): void |
| 240 | { |
| 241 | $this->template->sections->end(); |
| 242 | } |
| 243 | |
| 244 | public function section(string $name, string $default = ''): string |
| 245 | { |
| 246 | if (func_num_args() > 1) { |
| 247 | return $this->template->sections->getOr($name, $default); |
| 248 | } |
| 249 | |
| 250 | return $this->template->sections->get($name); |
| 251 | } |
| 252 | |
| 253 | public function has(string $name): bool |
| 254 | { |
| 255 | return $this->template->sections->has($name); |
| 256 | } |
| 257 | |
| 258 | private function location(): Location |
| 259 | { |
| 260 | return Location::fromBacktrace($this->template->path); |
| 261 | } |
| 262 | } |