package service

import (
	"context"
	"encoding/json"
	"io"
	"net/http"
	"net/http/httptest"
	"strings"
	"sync"
	"sync/atomic"
	"testing"
	"time"

	"github.com/Wei-Shaw/sub2api/internal/config"
	"github.com/gin-gonic/gin"
	"github.com/gorilla/websocket"
	"github.com/stretchr/testify/require"
	"github.com/tidwall/gjson"
)

func TestOpenAIGatewayService_Forward_PreservePreviousResponseIDWhenWSEnabled(t *testing.T) {
	gin.SetMode(gin.TestMode)
	wsFallbackServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.NotFound(w, r)
	}))
	defer wsFallbackServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":1,"output_tokens":2,"input_tokens_details":{"cached_tokens":0}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          1,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsFallbackServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_123","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 模式下失败时不应回退 HTTP")
}

func TestOpenAIGatewayService_Forward_HTTPIngressStaysHTTPWhenWSEnabled(t *testing.T) {
	gin.SetMode(gin.TestMode)
	wsFallbackServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.NotFound(w, r)
	}))
	defer wsFallbackServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")
	SetOpenAIClientTransport(c, OpenAIClientTransportHTTP)

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":1,"output_tokens":2,"input_tokens_details":{"cached_tokens":0}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          101,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsFallbackServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_http_keep","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.NoError(t, err)
	require.NotNil(t, result)
	require.False(t, result.OpenAIWSMode, "HTTP 入站应保持 HTTP 转发")
	require.NotNil(t, upstream.lastReq, "HTTP 入站应命中 HTTP 上游")
	require.False(t, gjson.GetBytes(upstream.lastBody, "previous_response_id").Exists(), "HTTP 路径应沿用原逻辑移除 previous_response_id")

	decision, _ := c.Get("openai_ws_transport_decision")
	reason, _ := c.Get("openai_ws_transport_reason")
	require.Equal(t, string(OpenAIUpstreamTransportHTTPSSE), decision)
	require.Equal(t, "client_protocol_http", reason)
}

func TestOpenAIGatewayService_Forward_RemovePreviousResponseIDWhenWSDisabled(t *testing.T) {
	gin.SetMode(gin.TestMode)
	wsFallbackServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.NotFound(w, r)
	}))
	defer wsFallbackServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":1,"output_tokens":2,"input_tokens_details":{"cached_tokens":0}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = false
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          1,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsFallbackServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_123","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.NoError(t, err)
	require.NotNil(t, result)
	require.False(t, gjson.GetBytes(upstream.lastBody, "previous_response_id").Exists())
}

func TestOpenAIGatewayService_Forward_WSv2Dial426FallbackHTTP(t *testing.T) {
	gin.SetMode(gin.TestMode)
	ws426Server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusUpgradeRequired)
		_, _ = w.Write([]byte(`upgrade required`))
	}))
	defer ws426Server.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":8,"output_tokens":9,"input_tokens_details":{"cached_tokens":1}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          12,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": ws426Server.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_426","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Contains(t, err.Error(), "upgrade_required")
	require.Nil(t, upstream.lastReq, "WS 模式下不应再回退 HTTP")
	require.Equal(t, http.StatusUpgradeRequired, rec.Code)
	require.Contains(t, rec.Body.String(), "426")
}

func TestOpenAIGatewayService_Forward_WSv2FallbackCoolingSkipWS(t *testing.T) {
	gin.SetMode(gin.TestMode)
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		http.NotFound(w, r)
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":2,"output_tokens":3,"input_tokens_details":{"cached_tokens":0}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 30

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          21,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	svc.markOpenAIWSFallbackCooling(account.ID, "upgrade_required")
	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_cooling","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 模式下不应再回退 HTTP")

	_, ok := c.Get("openai_ws_fallback_cooling")
	require.False(t, ok, "已移除 fallback cooling 快捷回退路径")
}

func TestOpenAIGatewayService_Forward_ReturnErrorWhenOnlyWSv1Enabled(t *testing.T) {
	gin.SetMode(gin.TestMode)

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body: io.NopCloser(strings.NewReader(
				`{"usage":{"input_tokens":1,"output_tokens":2,"input_tokens_details":{"cached_tokens":0}}}`,
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsockets = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = false

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          31,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": "https://api.openai.com/v1/responses",
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"previous_response_id":"resp_v1","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Contains(t, err.Error(), "ws v1")
	require.Equal(t, http.StatusBadRequest, rec.Code)
	require.Contains(t, rec.Body.String(), "WSv1")
	require.Nil(t, upstream.lastReq, "WSv1 不支持时不应触发 HTTP 上游请求")
}

func TestNewOpenAIGatewayService_InitializesOpenAIWSResolver(t *testing.T) {
	cfg := &config.Config{}
	svc := NewOpenAIGatewayService(
		nil,
		nil,
		nil,
		nil,
		nil,
		cfg,
		nil,
		nil,
		nil,
		nil,
		nil,
		nil,
		nil,
		nil,
	)

	decision := svc.getOpenAIWSProtocolResolver().Resolve(nil)
	require.Equal(t, OpenAIUpstreamTransportHTTPSSE, decision.Transport)
	require.Equal(t, "account_missing", decision.Reason)
}

func TestOpenAIGatewayService_Forward_WSv2FallbackWhenResponseAlreadyWrittenReturnsWSError(t *testing.T) {
	gin.SetMode(gin.TestMode)
	ws426Server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusUpgradeRequired)
		_, _ = w.Write([]byte(`upgrade required`))
	}))
	defer ws426Server.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")
	c.String(http.StatusAccepted, "already-written")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
	}

	account := &Account{
		ID:          41,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": ws426Server.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.1","stream":false,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Contains(t, err.Error(), "ws fallback")
	require.Nil(t, upstream.lastReq, "已写下游响应时，不应再回退 HTTP")
}

func TestOpenAIGatewayService_Forward_WSv2StreamEarlyCloseFallbackHTTP(t *testing.T) {
	gin.SetMode(gin.TestMode)

	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}

		// 仅发送 response.created（非 token 事件）后立即关闭，
		// 模拟线上“上游早期内部错误断连”的场景。
		if err := conn.WriteJSON(map[string]any{
			"type": "response.created",
			"response": map[string]any{
				"id":    "resp_ws_created_only",
				"model": "gpt-5.3-codex",
			},
		}); err != nil {
			t.Errorf("write response.created failed: %v", err)
			return
		}
		closePayload := websocket.FormatCloseMessage(websocket.CloseInternalServerErr, "")
		_ = conn.WriteControl(websocket.CloseMessage, closePayload, time.Now().Add(time.Second))
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"text/event-stream"}},
			Body: io.NopCloser(strings.NewReader(
				"data: {\"type\":\"response.output_text.delta\",\"delta\":\"ok\"}\n\n" +
					"data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_http_fallback\",\"usage\":{\"input_tokens\":2,\"output_tokens\":1}}}\n\n" +
					"data: [DONE]\n\n",
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          88,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":true,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 早期断连后不应再回退 HTTP")
	require.Empty(t, rec.Body.String(), "未产出 token 前上游断连时不应写入下游半截流")
}

func TestOpenAIGatewayService_Forward_WSv2RetryFiveTimesThenFallbackHTTP(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		closePayload := websocket.FormatCloseMessage(websocket.CloseInternalServerErr, "")
		_ = conn.WriteControl(websocket.CloseMessage, closePayload, time.Now().Add(time.Second))
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"text/event-stream"}},
			Body: io.NopCloser(strings.NewReader(
				"data: {\"type\":\"response.output_text.delta\",\"delta\":\"ok\"}\n\n" +
					"data: {\"type\":\"response.completed\",\"response\":{\"id\":\"resp_retry_http_fallback\",\"usage\":{\"input_tokens\":2,\"output_tokens\":1}}}\n\n" +
					"data: [DONE]\n\n",
			)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          89,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":true,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 重连耗尽后不应再回退 HTTP")
	require.Equal(t, int32(openAIWSReconnectRetryLimit+1), wsAttempts.Load())
}

func TestOpenAIGatewayService_Forward_WSv2PolicyViolationFastFallbackHTTP(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		closePayload := websocket.FormatCloseMessage(websocket.ClosePolicyViolation, "")
		_ = conn.WriteControl(websocket.CloseMessage, closePayload, time.Now().Add(time.Second))
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_policy_fallback","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1
	cfg.Gateway.OpenAIWS.RetryBackoffInitialMS = 1
	cfg.Gateway.OpenAIWS.RetryBackoffMaxMS = 2
	cfg.Gateway.OpenAIWS.RetryJitterRatio = 0

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          8901,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "策略违规关闭后不应回退 HTTP")
	require.Equal(t, int32(1), wsAttempts.Load(), "策略违规不应进行 WS 重试")
}

func TestOpenAIGatewayService_Forward_WSv2ConnectionLimitReachedRetryThenFallbackHTTP(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		_ = conn.WriteJSON(map[string]any{
			"type": "error",
			"error": map[string]any{
				"code":    "websocket_connection_limit_reached",
				"type":    "server_error",
				"message": "websocket connection limit reached",
			},
		})
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_http_retry_limit","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          90,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "触发 websocket_connection_limit_reached 后不应回退 HTTP")
	require.Equal(t, int32(openAIWSReconnectRetryLimit+1), wsAttempts.Load())
}

func TestOpenAIGatewayService_Forward_WSv2PreviousResponseNotFoundRecoversByDroppingPreviousResponseID(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	var wsRequestPayloads [][]byte
	var wsRequestMu sync.Mutex
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		attempt := wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		reqRaw, _ := json.Marshal(req)
		wsRequestMu.Lock()
		wsRequestPayloads = append(wsRequestPayloads, reqRaw)
		wsRequestMu.Unlock()
		if attempt == 1 {
			_ = conn.WriteJSON(map[string]any{
				"type": "error",
				"error": map[string]any{
					"code":    "previous_response_not_found",
					"type":    "invalid_request_error",
					"message": "previous response not found",
				},
			})
			return
		}
		_ = conn.WriteJSON(map[string]any{
			"type": "response.completed",
			"response": map[string]any{
				"id":    "resp_ws_prev_recover_ok",
				"model": "gpt-5.3-codex",
				"usage": map[string]any{
					"input_tokens":  1,
					"output_tokens": 1,
					"input_tokens_details": map[string]any{
						"cached_tokens": 0,
					},
				},
			},
		})
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_http_drop_prev","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          91,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"previous_response_id":"resp_prev_missing","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.NoError(t, err)
	require.NotNil(t, result)
	require.Equal(t, "resp_ws_prev_recover_ok", result.RequestID)
	require.Nil(t, upstream.lastReq, "previous_response_not_found 不应回退 HTTP")
	require.Equal(t, int32(2), wsAttempts.Load(), "previous_response_not_found 应触发一次去掉 previous_response_id 的恢复重试")
	require.Equal(t, http.StatusOK, rec.Code)
	require.Equal(t, "resp_ws_prev_recover_ok", gjson.Get(rec.Body.String(), "id").String())

	wsRequestMu.Lock()
	requests := append([][]byte(nil), wsRequestPayloads...)
	wsRequestMu.Unlock()
	require.Len(t, requests, 2)
	require.True(t, gjson.GetBytes(requests[0], "previous_response_id").Exists(), "首轮请求应保留 previous_response_id")
	require.False(t, gjson.GetBytes(requests[1], "previous_response_id").Exists(), "恢复重试应移除 previous_response_id")
}

func TestOpenAIGatewayService_Forward_WSv2PreviousResponseNotFoundSkipsRecoveryForFunctionCallOutput(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	var wsRequestPayloads [][]byte
	var wsRequestMu sync.Mutex
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		reqRaw, _ := json.Marshal(req)
		wsRequestMu.Lock()
		wsRequestPayloads = append(wsRequestPayloads, reqRaw)
		wsRequestMu.Unlock()
		_ = conn.WriteJSON(map[string]any{
			"type": "error",
			"error": map[string]any{
				"code":    "previous_response_not_found",
				"type":    "invalid_request_error",
				"message": "previous response not found",
			},
		})
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_http_drop_prev","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          92,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"previous_response_id":"resp_prev_missing","input":[{"type":"function_call_output","call_id":"call_1","output":"ok"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "previous_response_not_found 不应回退 HTTP")
	require.Equal(t, int32(1), wsAttempts.Load(), "function_call_output 场景应跳过 previous_response_not_found 自动恢复")
	require.Equal(t, http.StatusBadRequest, rec.Code)
	require.Contains(t, strings.ToLower(rec.Body.String()), "previous response not found")

	wsRequestMu.Lock()
	requests := append([][]byte(nil), wsRequestPayloads...)
	wsRequestMu.Unlock()
	require.Len(t, requests, 1)
	require.True(t, gjson.GetBytes(requests[0], "previous_response_id").Exists())
}

func TestOpenAIGatewayService_Forward_WSv2PreviousResponseNotFoundSkipsRecoveryWithoutPreviousResponseID(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	var wsRequestPayloads [][]byte
	var wsRequestMu sync.Mutex
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		reqRaw, _ := json.Marshal(req)
		wsRequestMu.Lock()
		wsRequestPayloads = append(wsRequestPayloads, reqRaw)
		wsRequestMu.Unlock()
		_ = conn.WriteJSON(map[string]any{
			"type": "error",
			"error": map[string]any{
				"code":    "previous_response_not_found",
				"type":    "invalid_request_error",
				"message": "previous response not found",
			},
		})
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_http_drop_prev","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          93,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 模式下 previous_response_not_found 不应回退 HTTP")
	require.Equal(t, int32(1), wsAttempts.Load(), "缺少 previous_response_id 时应跳过自动恢复重试")
	require.Equal(t, http.StatusBadRequest, rec.Code)

	wsRequestMu.Lock()
	requests := append([][]byte(nil), wsRequestPayloads...)
	wsRequestMu.Unlock()
	require.Len(t, requests, 1)
	require.False(t, gjson.GetBytes(requests[0], "previous_response_id").Exists())
}

func TestOpenAIGatewayService_Forward_WSv2PreviousResponseNotFoundOnlyRecoversOnce(t *testing.T) {
	gin.SetMode(gin.TestMode)

	var wsAttempts atomic.Int32
	var wsRequestPayloads [][]byte
	var wsRequestMu sync.Mutex
	upgrader := websocket.Upgrader{CheckOrigin: func(r *http.Request) bool { return true }}
	wsServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		wsAttempts.Add(1)
		conn, err := upgrader.Upgrade(w, r, nil)
		if err != nil {
			t.Errorf("upgrade websocket failed: %v", err)
			return
		}
		defer func() {
			_ = conn.Close()
		}()

		var req map[string]any
		if err := conn.ReadJSON(&req); err != nil {
			t.Errorf("read ws request failed: %v", err)
			return
		}
		reqRaw, _ := json.Marshal(req)
		wsRequestMu.Lock()
		wsRequestPayloads = append(wsRequestPayloads, reqRaw)
		wsRequestMu.Unlock()
		_ = conn.WriteJSON(map[string]any{
			"type": "error",
			"error": map[string]any{
				"code":    "previous_response_not_found",
				"type":    "invalid_request_error",
				"message": "previous response not found",
			},
		})
	}))
	defer wsServer.Close()

	rec := httptest.NewRecorder()
	c, _ := gin.CreateTestContext(rec)
	c.Request = httptest.NewRequest(http.MethodPost, "/openai/v1/responses", nil)
	c.Request.Header.Set("User-Agent", "custom-client/1.0")

	upstream := &httpUpstreamRecorder{
		resp: &http.Response{
			StatusCode: http.StatusOK,
			Header:     http.Header{"Content-Type": []string{"application/json"}},
			Body:       io.NopCloser(strings.NewReader(`{"id":"resp_http_drop_prev","usage":{"input_tokens":1,"output_tokens":1}}`)),
		},
	}

	cfg := &config.Config{}
	cfg.Security.URLAllowlist.Enabled = false
	cfg.Security.URLAllowlist.AllowInsecureHTTP = true
	cfg.Gateway.OpenAIWS.Enabled = true
	cfg.Gateway.OpenAIWS.OAuthEnabled = true
	cfg.Gateway.OpenAIWS.APIKeyEnabled = true
	cfg.Gateway.OpenAIWS.ResponsesWebsocketsV2 = true
	cfg.Gateway.OpenAIWS.FallbackCooldownSeconds = 1

	svc := &OpenAIGatewayService{
		cfg:              cfg,
		httpUpstream:     upstream,
		openaiWSResolver: NewOpenAIWSProtocolResolver(cfg),
		toolCorrector:    NewCodexToolCorrector(),
	}

	account := &Account{
		ID:          94,
		Name:        "openai-apikey",
		Platform:    PlatformOpenAI,
		Type:        AccountTypeAPIKey,
		Concurrency: 1,
		Credentials: map[string]any{
			"api_key":  "sk-test",
			"base_url": wsServer.URL,
		},
		Extra: map[string]any{
			"responses_websockets_v2_enabled": true,
		},
	}

	body := []byte(`{"model":"gpt-5.3-codex","stream":false,"previous_response_id":"resp_prev_missing","input":[{"type":"input_text","text":"hello"}]}`)
	result, err := svc.Forward(context.Background(), c, account, body)
	require.Error(t, err)
	require.Nil(t, result)
	require.Nil(t, upstream.lastReq, "WS 模式下 previous_response_not_found 不应回退 HTTP")
	require.Equal(t, int32(2), wsAttempts.Load(), "应只允许一次自动恢复重试")
	require.Equal(t, http.StatusBadRequest, rec.Code)

	wsRequestMu.Lock()
	requests := append([][]byte(nil), wsRequestPayloads...)
	wsRequestMu.Unlock()
	require.Len(t, requests, 2)
	require.True(t, gjson.GetBytes(requests[0], "previous_response_id").Exists(), "首轮请求应包含 previous_response_id")
	require.False(t, gjson.GetBytes(requests[1], "previous_response_id").Exists(), "恢复重试应移除 previous_response_id")
}