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<?php |
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|
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/** |
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* @copyright © Melograno Venture Studio. All rights reserved. |
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* @licence See COPYING.md for license details. |
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*/ |
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|
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namespace IvyForms\Common\Helpers\McpHelpers; |
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|
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/** |
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* Pure access-rule merge helpers for MCP permission grant/revoke. |
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*/ |
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final class McpAccessRulesMerger |
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{ |
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/** |
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* Add/merge a grant onto a rule that matches the principal and form scope, or append a new rule. |
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* |
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* @param list<array<string, mixed>> $rules |
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* @param 'role'|'user' $type |
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* @param string|int $principal |
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* @param list<string> $permissions |
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* @param list<int>|null $formIds |
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* @return list<array<string, mixed>> |
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*/ |
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public static function upsertGrant( |
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array $rules, |
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string $type, |
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$principal, |
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array $permissions, |
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?array $formIds |
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): array { |
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$scopeKey = self::scopeKey($formIds); |
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foreach ($rules as &$rule) { |
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if (!self::ruleMatches($rule, $type, $principal, $scopeKey)) { |
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continue; |
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} |
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$existing = is_array($rule['permissions'] ?? null) ? $rule['permissions'] : []; |
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$rule['permissions'] = array_values(array_unique(array_merge($existing, $permissions))); |
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$rule['updated_at'] = time(); |
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|
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unset($rule); |
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|
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return $rules; |
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} |
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unset($rule); |
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|
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$rules[] = self::newRule($type, $principal, $permissions, $formIds); |
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|
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return $rules; |
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} |
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|
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/** |
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* Remove permission keys from matching rules, dropping rules that become empty. |
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* |
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* Only rules for the same principal and form scope as {@see upsertGrant()} are modified: |
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* omit formIds to revoke from global rules only; pass formIds to revoke from that scope. |
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* |
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* @param list<array<string, mixed>> $rules |
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* @param 'role'|'user' $type |
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* @param string|int $principal |
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* @param list<string> $permissions |
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* @param list<int>|null $formIds |
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* @return list<array<string, mixed>> |
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*/ |
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public static function applyRevoke( |
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array $rules, |
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string $type, |
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$principal, |
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array $permissions, |
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?array $formIds |
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): array { |
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$scopeKey = self::scopeKey($formIds); |
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$out = []; |
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foreach ($rules as $rule) { |
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if (!self::ruleMatches($rule, $type, $principal, $scopeKey)) { |
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$out[] = $rule; |
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continue; |
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} |
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$existing = is_array($rule['permissions'] ?? null) ? $rule['permissions'] : []; |
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$remaining = array_values(array_diff($existing, $permissions)); |
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if ($remaining === []) { |
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continue; |
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} |
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$rule['permissions'] = $remaining; |
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$rule['updated_at'] = time(); |
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$out[] = $rule; |
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} |
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|
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return $out; |
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} |
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|
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/** |
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* @param array<string, mixed> $rule |
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* @param 'role'|'user' $type |
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* @param string|int $principal |
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*/ |
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private static function ruleMatches(array $rule, string $type, $principal, string $scopeKey): bool |
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{ |
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if (($rule['type'] ?? '') !== $type) { |
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return false; |
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} |
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|
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if (self::scopeKey($rule['form_ids'] ?? null) !== $scopeKey) { |
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return false; |
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} |
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|
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if ($type === 'role') { |
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return strtolower(trim((string) ($rule['role_slug'] ?? ''))) === (string) $principal; |
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} |
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|
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return (int) ($rule['user_id'] ?? 0) === (int) $principal; |
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} |
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|
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/** |
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* @param 'role'|'user' $type |
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* @param string|int $principal |
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* @param list<string> $permissions |
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* @param list<int>|null $formIds |
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* @return array<string, mixed> |
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*/ |
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private static function newRule(string $type, $principal, array $permissions, ?array $formIds): array |
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{ |
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$now = time(); |
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$rule = [ |
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'id' => self::ruleId(), |
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'type' => $type, |
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'permissions' => $permissions, |
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'form_ids' => $formIds, |
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'created_at' => $now, |
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'updated_at' => $now, |
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]; |
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if ($type === 'role') { |
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$rule['role_slug'] = (string) $principal; |
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|
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return $rule; |
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} |
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|
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$rule['user_id'] = (int) $principal; |
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|
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return $rule; |
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} |
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|
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/** |
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* @param list<int>|null $formIds |
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*/ |
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private static function scopeKey(?array $formIds): string |
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{ |
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if ($formIds === null) { |
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return 'global'; |
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} |
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$ids = array_values(array_unique(array_map('intval', $formIds))); |
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sort($ids); |
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|
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return 'forms:' . implode(',', $ids); |
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} |
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|
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private static function ruleId(): string |
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{ |
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if (function_exists('wp_generate_uuid4')) { |
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return 'mcp-' . wp_generate_uuid4(); |
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} |
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|
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return uniqid('mcp-', true); |
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} |
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} |
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|
