feat: add ny import compatibility with auto port assignment

- Support optional listen_port field for automatic port assignment
- Add alias field mapping (dest/dst/target, listenPort/port, name/forward_name)
- Update help text to document auto port assignment
- Add parser tests for alias fields and missing port handling

Entire-Checkpoint: efae74a1f03c

plans/002-ny-import-tunnel-selection-compat.md

@@ -0,0 +1,7 @@
+- [x] Review current forward import flow and confirm ny import uses tunnel selection
+- [x] Define ny compatibility update with tunnel-first behavior and auto port assignment fallback
+- [x] Update ny parser to accept alias fields and optional `listen_port`
+- [x] Keep import execution bound to selected tunnel and remove entry-selection dependency from ux copy
+- [x] Update ny import help text to document optional port auto assignment
+- [x] Add parser tests for alias-field compatibility and missing-port auto assignment
+- [x] Validate updated import parser tests locally

vite-frontend/src/pages/forward.tsx

@@ -4620,10 +4620,10 @@ export default function ForwardPage() {
             ) : (
               <>
                 <p className="text-small text-default-500">
-                  ny格式：JSON对象，支持多个目标地址（负载均衡）
+                  ny格式：JSON对象，支持多个目标地址（负载均衡），按所选隧道导入
                 </p>
                 <p className="text-small text-default-400">
-                  格式：&#123;&quot;dest&quot;:[&quot;地址:端口&quot;],&quot;listen_port&quot;:端口,&quot;name&quot;:&quot;名称&quot;&#125;
+                  格式：&#123;&quot;dest&quot;:[&quot;地址:端口&quot;],&quot;listen_port&quot;:端口,&quot;name&quot;:&quot;名称&quot;&#125;（listen_port可省略，自动分配端口）
                 </p>
               </>
             )}
@@ -4696,7 +4696,7 @@ export default function ForwardPage() {
                 placeholder={
                   importFormat === "flvx"
                     ? "请输入要导入的转发数据，格式：目标地址|转发名称|入口端口"
-                    : '请输入ny格式数据，每行一个JSON对象，如：{"dest":["1.2.3.4:80"],"listen_port":8080,"name":"转发1"}'
+                    : '请输入ny格式数据，每行一个JSON对象，如：{"dest":["1.2.3.4:80"],"listen_port":8080,"name":"转发1"}；listen_port可省略自动分配'
                 }
                 value={importData}
                 variant="flat"

vite-frontend/src/pages/forward/import-format.test.ts

@@ -46,6 +46,33 @@ test("parseNyFormatData returns validation errors for invalid fields", () => {
   assert.match(result[1].error || "", /目标地址格式错误/);
 });
 
+test("parseNyFormatData allows missing listen_port for auto assignment", () => {
+  const input = '{"dest":["1.1.1.1:1000"],"name":"No Port"}';
+
+  const result = parseNyFormatData(input);
+
+  assert.equal(result.length, 1);
+  assert.equal(result[0].error, undefined);
+  assert.equal(result[0].parsed?.listen_port, null);
+});
+
+test("parseNyFormatData supports ny alias fields", () => {
+  const input =
+    '{"dst":["2.2.2.2:2000"],"listenPort":"3000","forward_name":"Alias A"}\n{"target":"3.3.3.3:4000,4.4.4.4:5000","port":6000,"forwardName":"Alias B"}';
+
+  const result = parseNyFormatData(input);
+
+  assert.equal(result.length, 2);
+  assert.equal(result[0].error, undefined);
+  assert.equal(result[1].error, undefined);
+  assert.deepEqual(result[0].parsed?.dest, ["2.2.2.2:2000"]);
+  assert.equal(result[0].parsed?.listen_port, 3000);
+  assert.equal(result[0].parsed?.name, "Alias A");
+  assert.deepEqual(result[1].parsed?.dest, ["3.3.3.3:4000", "4.4.4.4:5000"]);
+  assert.equal(result[1].parsed?.listen_port, 6000);
+  assert.equal(result[1].parsed?.name, "Alias B");
+});
+
 test("convertNyItemToForwardInput maps ny fields correctly", () => {
   const mapped = convertNyItemToForwardInput({
     dest: ["1.1.1.1:1111", "2.2.2.2:2222"],
@@ -60,3 +87,18 @@ test("convertNyItemToForwardInput maps ny fields correctly", () => {
     strategy: "fifo",
   });
 });
+
+test("convertNyItemToForwardInput keeps null inPort for auto assignment", () => {
+  const mapped = convertNyItemToForwardInput({
+    dest: ["1.1.1.1:1111"],
+    listen_port: null,
+    name: "No Port",
+  });
+
+  assert.deepEqual(mapped, {
+    name: "No Port",
+    inPort: null,
+    remoteAddr: "1.1.1.1:1111",
+    strategy: "fifo",
+  });
+});

vite-frontend/src/pages/forward/import-format.ts

@@ -1,6 +1,6 @@
 export interface NyImportItem {
   dest: string[];
-  listen_port: number;
+  listen_port: number | null;
   name: string;
 }
 
@@ -12,6 +12,70 @@ export interface ParsedNyImportLine {
 
 const ADDRESS_PATTERN = /^[^:]+:\d+$/;
 
+const getAliasField = (
+  item: Record<string, unknown>,
+  aliases: string[],
+): unknown => {
+  for (const alias of aliases) {
+    if (Object.prototype.hasOwnProperty.call(item, alias)) {
+      return item[alias];
+    }
+  }
+
+  return undefined;
+};
+
+const normalizeDestList = (value: unknown): string[] | null => {
+  if (Array.isArray(value)) {
+    const normalized = value.map((itemValue) =>
+      typeof itemValue === "string" ? itemValue.trim() : "",
+    );
+
+    if (normalized.some((itemValue) => itemValue === "")) {
+      return null;
+    }
+
+    return normalized;
+  }
+
+  if (typeof value === "string") {
+    const normalized = value
+      .split(",")
+      .map((itemValue) => itemValue.trim())
+      .filter((itemValue) => itemValue !== "");
+
+    return normalized.length > 0 ? normalized : null;
+  }
+
+  return null;
+};
+
+const normalizeListenPort = (value: unknown): number | null | undefined => {
+  if (value === undefined || value === null || value === "") {
+    return null;
+  }
+
+  if (typeof value === "number") {
+    return Number.isInteger(value) ? value : undefined;
+  }
+
+  if (typeof value === "string") {
+    const trimmed = value.trim();
+
+    if (!trimmed) {
+      return null;
+    }
+
+    if (!/^\d+$/.test(trimmed)) {
+      return undefined;
+    }
+
+    return Number.parseInt(trimmed, 10);
+  }
+
+  return undefined;
+};
+
 const isValidListenPort = (value: unknown): value is number => {
   return (
     typeof value === "number" &&
@@ -27,11 +91,19 @@ const validateNyItem = (line: string, value: unknown): ParsedNyImportLine => {
   }
 
   const item = value as Record<string, unknown>;
-  const dest = item.dest;
-  const listenPort = item.listen_port;
-  const name = item.name;
+  const dest = getAliasField(item, ["dest", "dst", "target", "targets"]);
+  const listenPortRaw = getAliasField(item, [
+    "listen_port",
+    "listenPort",
+    "port",
+    "in_port",
+    "inPort",
+  ]);
+  const name = getAliasField(item, ["name", "forward_name", "forwardName"]);
+  const normalizedDest = normalizeDestList(dest);
+  const normalizedListenPort = normalizeListenPort(listenPortRaw);
 
-  if (!Array.isArray(dest) || dest.length === 0) {
+  if (!normalizedDest || normalizedDest.length === 0) {
     return { line, error: "dest数组为空或格式错误" };
   }
 
@@ -39,16 +111,12 @@ const validateNyItem = (line: string, value: unknown): ParsedNyImportLine => {
     return { line, error: "name不能为空" };
   }
 
-  if (!isValidListenPort(listenPort)) {
-    return { line, error: "listen_port必须为1-65535之间的数字" };
+  if (normalizedListenPort === undefined) {
+    return { line, error: "listen_port格式错误，应为1-65535之间的数字" };
   }
 
-  const normalizedDest = dest.map((itemValue) =>
-    typeof itemValue === "string" ? itemValue.trim() : "",
-  );
-
-  if (normalizedDest.some((itemValue) => itemValue === "")) {
-    return { line, error: "dest中包含空地址" };
+  if (normalizedListenPort !== null && !isValidListenPort(normalizedListenPort)) {
+    return { line, error: "listen_port必须为1-65535之间的数字" };
   }
 
   const invalid = normalizedDest.find(
@@ -63,7 +131,7 @@ const validateNyItem = (line: string, value: unknown): ParsedNyImportLine => {
     line,
     parsed: {
       dest: normalizedDest,
-      listen_port: listenPort,
+      listen_port: normalizedListenPort,
       name: name.trim(),
     },
   };