93 lines
3.9 KiB
PHP
93 lines
3.9 KiB
PHP
<?php
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declare(strict_types=1);
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namespace app\adminapi\service;
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/** Repeated JSON keys only: no text summarization, row filtering or value coercion. */
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final class AiLosslessSourceEncoding
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{
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public const VERSION = 'clinical-row-tables-v1';
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public static function encode(array $snapshot): string
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{
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$paths = [];
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$data = self::pack($snapshot, [], $paths);
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return json_encode([
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'encoding' => self::VERSION,
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'reading_rule' => 'table_paths指定的节点使用columns和rows：每行各值按columns的同序字段对应。'
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. '这是完整原始记录的无损表示，不是摘要；所有行、日期、数值、原文、null和空项均保留。'
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. '表外对象照常读取；历史记录不能当成本次查体，空项不能当成患者否认或正常。',
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'table_paths' => $paths,
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'data' => $data,
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], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRESERVE_ZERO_FRACTION
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| JSON_INVALID_UTF8_SUBSTITUTE | JSON_THROW_ON_ERROR);
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}
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/** Reversible verification helper. Table paths also disambiguate literal columns/rows objects. */
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public static function decode(string $encoded): array
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{
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$wire = json_decode($encoded, true, 512, JSON_THROW_ON_ERROR);
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if (($wire['encoding'] ?? null) !== self::VERSION || !is_array($wire['table_paths'] ?? null)
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|| !is_array($wire['data'] ?? null)) {
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throw new \InvalidArgumentException('Invalid clinical row encoding');
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}
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$tables = [];
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foreach ($wire['table_paths'] as $path) {
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if (!is_array($path) || !array_is_list($path)) throw new \InvalidArgumentException('Invalid table path');
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$tables[serialize($path)] = true;
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}
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return self::unpack($wire['data'], [], $tables);
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}
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private static function pack($node, array $path, array &$paths)
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{
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if (!is_array($node)) return $node;
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if (array_is_list($node) && count($node) > 1 && is_array($node[0]) && !array_is_list($node[0])) {
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$columns = array_keys($node[0]);
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$sameShape = true;
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foreach ($node as $row) {
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if (!is_array($row) || array_keys($row) !== $columns) { $sameShape = false; break; }
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}
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if ($sameShape) {
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$paths[] = $path;
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$rows = [];
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foreach ($node as $r => $row) {
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$values = [];
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foreach (array_values($row) as $c => $value) {
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$values[] = self::pack($value, [...$path, 'rows', $r, $c], $paths);
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}
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$rows[] = $values;
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}
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return ['columns' => $columns, 'rows' => $rows];
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}
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}
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$result = [];
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foreach ($node as $key => $value) $result[$key] = self::pack($value, [...$path, $key], $paths);
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return $result;
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}
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private static function unpack($node, array $path, array $tables)
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{
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if (!is_array($node)) return $node;
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if (isset($tables[serialize($path)])) {
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if (!is_array($node['columns'] ?? null) || !is_array($node['rows'] ?? null)) {
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throw new \InvalidArgumentException('Invalid clinical row table');
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}
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$result = [];
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foreach ($node['rows'] as $r => $row) {
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if (!is_array($row) || count($row) !== count($node['columns'])) {
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throw new \InvalidArgumentException('Invalid clinical row width');
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}
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$values = [];
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foreach ($row as $c => $value) $values[] = self::unpack($value, [...$path, 'rows', $r, $c], $tables);
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$result[] = array_combine($node['columns'], $values);
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}
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return $result;
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}
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$result = [];
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foreach ($node as $key => $value) $result[$key] = self::unpack($value, [...$path, $key], $tables);
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return $result;
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}
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}
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