初始化版本

api/save_text.php

@@ -0,0 +1,63 @@
+<?php
+// 保存讨论区文案到本地（避免重复），不进行过期清理
+header('Content-Type: application/json; charset=utf-8');
+
+function respond($ok, $message = '', $path = '') {
+    echo json_encode(['success' => $ok, 'message' => $message, 'path' => $path], JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+    exit;
+}
+
+$raw = file_get_contents('php://input');
+$data = json_decode($raw, true);
+$text = trim($data['text'] ?? '');
+$source = trim($data['source'] ?? '');
+if ($text === '') { respond(false, '文本为空'); }
+
+// 根目录
+$textsRoot = __DIR__ . '/../texts';
+if (!is_dir($textsRoot)) { @mkdir($textsRoot, 0777, true); }
+// 按来源（/后缀，即 yiyan/dujitang/renjian 等）创建子目录
+$safeSource = preg_replace('/[^A-Za-z0-9._-]+/u', '_', $source ?: 'unknown');
+$safeSource = trim($safeSource, '._-');
+if ($safeSource === '') { $safeSource = 'unknown'; }
+
+// 日期目录
+$today = (new DateTime('now'))->format('Y-m-d');
+$targetDir = $textsRoot . '/' . $safeSource . '/' . $today;
+if (!is_dir($targetDir)) { @mkdir($targetDir, 0777, true); }
+
+// 改为保存到同一天的单个文件 all.json
+$targetPath = $targetDir . '/all.json';
+
+// 读取已有数据
+$entries = [];
+if (file_exists($targetPath)) {
+    $rawJson = @file_get_contents($targetPath);
+    $decoded = json_decode($rawJson, true);
+    if (is_array($decoded)) { $entries = $decoded; }
+}
+
+// 重复检查：文本完全相同则认为重复
+foreach ($entries as $e) {
+    if (isset($e['text']) && trim((string)$e['text']) === $text) {
+        respond(true, '文本已存在，跳过保存', str_replace($_SERVER['DOCUMENT_ROOT'], '', $targetPath));
+    }
+}
+
+$entries[] = [
+    'text' => $text,
+    'source' => $source,
+    'created_at' => (new DateTime('now'))->format(DateTime::ATOM),
+];
+
+try {
+    $json = json_encode($entries, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+    if (@file_put_contents($targetPath, $json, LOCK_EX) === false) {
+        respond(false, '无法写入文件');
+    }
+} catch (Throwable $e) {
+    respond(false, '保存失败: ' . $e->getMessage());
+}
+
+respond(true, '保存成功', str_replace($_SERVER['DOCUMENT_ROOT'], '', $targetPath));
+