package app

import (
	"context"
	"encoding/json"
	"fmt"
	"io"
	"net/http"
	"strings"
	"testing"
	"time"

	"ccLoad/internal/model"
	"ccLoad/internal/testutil"
	"ccLoad/internal/util"

	"github.com/gin-gonic/gin"
)

// TestHandleChannelTest 测试渠道测试功能
func TestHandleChannelTest(t *testing.T) {
	tests := []struct {
		name           string
		channelID      string
		requestBody    map[string]any
		setupData      bool
		expectedStatus int
		expectSuccess  bool
	}{
		{
			name:      "无效的渠道ID",
			channelID: "invalid",
			requestBody: map[string]any{
				"model":        "test-model",
				"channel_type": "anthropic",
			},
			setupData:      false,
			expectedStatus: http.StatusBadRequest,
			expectSuccess:  false,
		},
		{
			name:      "渠道不存在",
			channelID: "999",
			requestBody: map[string]any{
				"model":        "test-model",
				"channel_type": "anthropic",
			},
			setupData:      false,
			expectedStatus: http.StatusNotFound,
			expectSuccess:  false,
		},
		{
			name:      "无效的请求体",
			channelID: "1",
			requestBody: map[string]any{
				"invalid_field": "value",
			},
			setupData:      false,
			expectedStatus: http.StatusBadRequest,
			expectSuccess:  false,
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			// 创建测试服务器
			srv := newInMemoryServer(t)

			ctx := context.Background()

			// 设置测试数据(如果需要)
			if tt.setupData {
				cfg := &model.Config{
					ID:           1,
					Name:         "test-channel",
					URL:          "http://test.example.com",
					Priority:     1,
					ModelEntries: []model.ModelEntry{{Model: "test-model", RedirectModel: ""}},
					Enabled:      true,
				}
				_, err := srv.store.CreateConfig(ctx, cfg)
				if err != nil {
					t.Fatalf("创建测试渠道失败: %v", err)
				}
			}

			c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+tt.channelID+"/test", tt.requestBody))
			c.Params = gin.Params{{Key: "id", Value: tt.channelID}}

			// 调用处理函数
			srv.HandleChannelTest(c)

			// 验证响应状态码
			if w.Code != tt.expectedStatus {
				t.Errorf("期望状态码 %d, 实际 %d, 响应: %s", tt.expectedStatus, w.Code, w.Body.String())
			}

			resp := mustParseAPIResponse[json.RawMessage](t, w.Body.Bytes())
			if resp.Success != tt.expectSuccess {
				t.Errorf("期望 success=%v, 实际=%v, error=%q", tt.expectSuccess, resp.Success, resp.Error)
			}
		})
	}
}

func TestTestChannelAPI_MultiURLFallbackAndSelectorFeedback(t *testing.T) {
	failCalls := 0
	okCalls := 0

	failUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		failCalls++
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		_, _ = w.Write([]byte(`{"error":{"type":"server_error","message":"upstream fail"}}`))
	}))
	defer failUpstream.Close()

	okUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		okCalls++
		time.Sleep(15 * time.Millisecond)
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}],"usage":{"prompt_tokens":10,"completion_tokens":5}}`))
	}))
	defer okUpstream.Close()

	srv := newInMemoryServer(t)

	cfg := &model.Config{
		ID:           9527,
		Name:         "multi-url-test",
		URL:          failUpstream.URL + "\n" + okUpstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}

	// 强制第一跳命中失败URL，验证是否会回退到第二个URL。
	srv.urlSelector.CooldownURL(cfg.ID, okUpstream.URL)

	req := &testutil.TestChannelRequest{
		Model:       "gpt-4o-mini",
		ChannelType: "openai",
		Content:     "hello",
	}

	result := srv.testChannelAPI(context.Background(), cfg, "sk-test", req)
	success, _ := result["success"].(bool)
	if !success {
		t.Fatalf("expected fallback success, got result=%+v", result)
	}
	if failCalls < 1 || okCalls < 1 {
		t.Fatalf("expected both URLs attempted, failCalls=%d okCalls=%d", failCalls, okCalls)
	}
	if !srv.urlSelector.IsCooledDown(cfg.ID, failUpstream.URL) {
		t.Fatalf("expected failed URL to be cooled down, url=%s", failUpstream.URL)
	}
	if lat, ok := srv.urlSelector.latencies[urlKey{channelID: cfg.ID, url: okUpstream.URL}]; !ok || lat == nil || lat.value <= 0 {
		t.Fatalf("expected success URL latency recorded, got=%v", lat)
	}
}

func TestExecuteChannelTestWithCooldown_RespectsRPMLimitWithoutCooldown(t *testing.T) {
	hits := 0
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		hits++
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}],"usage":{"prompt_tokens":1,"completion_tokens":1}}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)

	cfg := &model.Config{
		ID:           9528,
		Name:         "rpm-limited-test",
		URL:          upstream.URL,
		Priority:     1,
		RPMLimit:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}
	req := &testutil.TestChannelRequest{
		Model:       "gpt-4o-mini",
		ChannelType: "openai",
		Content:     "hello",
	}

	first := srv.executeChannelTestWithCooldown(context.Background(), cfg, 0, "sk-test", req, true)
	if success, _ := first["success"].(bool); !success {
		t.Fatalf("first test should succeed, got result=%+v", first)
	}

	second := srv.executeChannelTestWithCooldown(context.Background(), cfg, 0, "sk-test", req, true)
	if success, _ := second["success"].(bool); success {
		t.Fatalf("second test should be RPM limited, got result=%+v", second)
	}
	if limited, _ := second["rpm_limited"].(bool); !limited {
		t.Fatalf("expected rpm_limited marker, got result=%+v", second)
	}
	if action, _ := second["cooldown_action"].(string); action != "rpm_limited_no_cooldown" {
		t.Fatalf("cooldown_action=%q, want rpm_limited_no_cooldown, result=%+v", action, second)
	}
	if retryAfterMs, _ := getResultInt(second["retry_after_ms"]); retryAfterMs <= 0 {
		t.Fatalf("retry_after_ms=%d, want positive value, result=%+v", retryAfterMs, second)
	}
	if hits != 1 {
		t.Fatalf("upstream hits=%d, want 1", hits)
	}
}

func TestTestChannelAPI_MultiURLFallbackOnPlainText502(t *testing.T) {
	failCalls := 0
	okCalls := 0

	failUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		failCalls++
		w.Header().Set("Content-Type", "text/plain; charset=UTF-8")
		w.WriteHeader(http.StatusBadGateway)
		_, _ = w.Write([]byte("error code: 502"))
	}))
	defer failUpstream.Close()

	okUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		okCalls++
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}],"usage":{"prompt_tokens":10,"completion_tokens":5}}`))
	}))
	defer okUpstream.Close()

	srv := newInMemoryServer(t)

	cfg := &model.Config{
		ID:           9528,
		Name:         "multi-url-plain-502-test",
		URL:          failUpstream.URL + "\n" + okUpstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}

	// 强制第一跳命中 502 的坏 URL，验证 text/plain 错误体也会继续回退。
	srv.urlSelector.CooldownURL(cfg.ID, okUpstream.URL)

	req := &testutil.TestChannelRequest{
		Model:       "gpt-4o-mini",
		ChannelType: "openai",
		Content:     "hello",
	}

	result := srv.testChannelAPI(context.Background(), cfg, "sk-test", req)
	success, _ := result["success"].(bool)
	if !success {
		t.Fatalf("expected fallback success on plain 502, got result=%+v", result)
	}
	if failCalls < 1 || okCalls < 1 {
		t.Fatalf("expected both URLs attempted, failCalls=%d okCalls=%d", failCalls, okCalls)
	}
	if !srv.urlSelector.IsCooledDown(cfg.ID, failUpstream.URL) {
		t.Fatalf("expected failed URL to be cooled down, url=%s", failUpstream.URL)
	}
	if got, ok := result["response_text"].(string); !ok || got != "ok" {
		t.Fatalf("expected second URL success response_text=ok, got=%+v", result)
	}
}

func TestTestChannelAPI_NonStreamUsesConfiguredTimeout(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		select {
		case <-r.Context().Done():
			return
		case <-time.After(160 * time.Millisecond):
		}

		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"late"}}],"usage":{"prompt_tokens":1,"completion_tokens":1}}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.nonStreamTimeout = 25 * time.Millisecond

	cfg := &model.Config{
		ID:           9530,
		Name:         "non-stream-timeout-test",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}
	req := &testutil.TestChannelRequest{
		Model:       "gpt-4o-mini",
		ChannelType: "openai",
		Content:     "hello",
		Stream:      false,
	}

	start := time.Now()
	result := srv.testChannelAPI(context.Background(), cfg, "sk-test", req)
	elapsed := time.Since(start)

	if success, _ := result["success"].(bool); success {
		t.Fatalf("expected timeout failure, got result=%+v", result)
	}
	if elapsed >= 120*time.Millisecond {
		t.Fatalf("expected configured timeout before delayed upstream response, elapsed=%v result=%+v", elapsed, result)
	}
	if statusCode, _ := getResultInt(result["status_code"]); statusCode != http.StatusGatewayTimeout {
		t.Fatalf("status_code=%d, want %d, result=%+v", statusCode, http.StatusGatewayTimeout, result)
	}
}

func TestTestChannelAPI_StreamFirstValidContentTimeoutIgnoresHeartbeats(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/event-stream")
		w.WriteHeader(http.StatusOK)

		flusher, _ := w.(http.Flusher)
		ticker := time.NewTicker(10 * time.Millisecond)
		defer ticker.Stop()
		lateContent := time.NewTimer(160 * time.Millisecond)
		defer lateContent.Stop()

		for {
			select {
			case <-r.Context().Done():
				return
			case <-ticker.C:
				_, _ = w.Write([]byte(": keep-alive\n\n"))
				flusher.Flush()
			case <-lateContent.C:
				_, _ = w.Write([]byte("data: {\"choices\":[{\"delta\":{\"content\":\"late\"}}]}\n\n"))
				_, _ = w.Write([]byte("data: [DONE]\n\n"))
				flusher.Flush()
				return
			}
		}
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.firstByteTimeout = 30 * time.Millisecond

	cfg := &model.Config{
		ID:           9531,
		Name:         "stream-first-content-timeout-test",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}
	req := &testutil.TestChannelRequest{
		Model:       "gpt-4o-mini",
		ChannelType: "openai",
		Content:     "hello",
		Stream:      true,
	}

	start := time.Now()
	result := srv.testChannelAPI(context.Background(), cfg, "sk-test", req)
	elapsed := time.Since(start)

	if success, _ := result["success"].(bool); success {
		t.Fatalf("expected first valid stream content timeout, got result=%+v", result)
	}
	if elapsed >= 120*time.Millisecond {
		t.Fatalf("expected timeout before late content, elapsed=%v result=%+v", elapsed, result)
	}
	if statusCode, _ := getResultInt(result["status_code"]); statusCode != util.StatusFirstByteTimeout {
		t.Fatalf("status_code=%d, want %d, result=%+v", statusCode, util.StatusFirstByteTimeout, result)
	}
	if _, ok := result["first_byte_duration_ms"]; ok {
		t.Fatalf("heartbeat must not set first_byte_duration_ms, result=%+v", result)
	}
}

func TestHandleChannelTest_RejectsBaseURL(t *testing.T) {
	failCalls := 0
	failUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		failCalls++
		w.WriteHeader(http.StatusServiceUnavailable)
	}))
	defer failUpstream.Close()

	okCalls := 0
	okUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		okCalls++
		w.WriteHeader(http.StatusOK)
	}))
	defer okUpstream.Close()

	srv := newInMemoryServer(t)
	ctx := context.Background()

	cfg := &model.Config{
		Name:         "channel-test-reject-base-url",
		URL:          failUpstream.URL + "\n" + okUpstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+fmt.Sprintf("%d", created.ID)+"/test", map[string]any{
		"model":        "gpt-4o-mini",
		"channel_type": "openai",
		"base_url":     okUpstream.URL,
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)
	if w.Code != http.StatusBadRequest {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusBadRequest, w.Body.String())
	}

	resp := mustParseAPIResponse[json.RawMessage](t, w.Body.Bytes())
	if resp.Success {
		t.Fatalf("expected success=false, resp=%+v", resp)
	}
	if !strings.Contains(resp.Error, "/test-url") {
		t.Fatalf("expected error to guide /test-url, got %q", resp.Error)
	}
	if failCalls != 0 || okCalls != 0 {
		t.Fatalf("expected no upstream request, failCalls=%d okCalls=%d", failCalls, okCalls)
	}
}

func TestHandleChannelURLTest_UsesForcedURL(t *testing.T) {
	failCalls := 0
	failUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		failCalls++
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusServiceUnavailable)
		_, _ = w.Write([]byte(`{"error":{"type":"server_error","message":"should not hit this url"}}`))
	}))
	defer failUpstream.Close()

	okCalls := 0
	okUpstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		okCalls++
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}],"usage":{"prompt_tokens":10,"completion_tokens":5}}`))
	}))
	defer okUpstream.Close()

	srv := newInMemoryServer(t)
	ctx := context.Background()

	cfg := &model.Config{
		Name:         "single-url-test",
		URL:          failUpstream.URL + "\n" + okUpstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4o-mini"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}
	// selector 和多 URL 顺序都不该影响显式单 URL 测试。
	srv.urlSelector.CooldownURL(created.ID, okUpstream.URL)

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+fmt.Sprintf("%d", created.ID)+"/test-url", map[string]any{
		"model":        "gpt-4o-mini",
		"channel_type": "openai",
		"base_url":     okUpstream.URL,
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelURLTest(c)
	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("expected success=true, data=%+v", resp.Data)
	}
	if failCalls != 0 {
		t.Fatalf("expected forced base_url to skip fail url, failCalls=%d", failCalls)
	}
	if okCalls != 1 {
		t.Fatalf("expected forced base_url called once, okCalls=%d", okCalls)
	}
}

// TestHandleChannelTest_NoAPIKey 渠道存在但无 API key
func TestHandleChannelTest_NoAPIKey(t *testing.T) {
	srv := newInMemoryServer(t)
	ctx := context.Background()

	// 创建渠道但不添加 API key
	cfg := &model.Config{
		Name:         "no-key-channel",
		URL:          "http://test.example.com",
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "test-model"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "test-model",
		"channel_type": "anthropic",
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	// 状态码 200，但 data 中 success=false
	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	// RespondJSON 包装 success=true (外层), data 内部有 success: false
	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	if !resp.Success {
		t.Fatalf("外层 APIResponse.Success 应为 true, error=%q", resp.Error)
	}

	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatal("data.success 应为 false（渠道无 API key）")
	}

	dataError, _ := resp.Data["error"].(string)
	if dataError == "" {
		t.Fatal("data.error 不应为空")
	}
}

// TestHandleChannelTest_UnsupportedModel 渠道存在、有 Key，但模型不支持
func TestHandleChannelTest_UnsupportedModel(t *testing.T) {
	srv := newInMemoryServer(t)
	ctx := context.Background()

	cfg := &model.Config{
		Name:         "limited-model-channel",
		URL:          "http://test.example.com",
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	// 添加 API key
	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "test-key-001"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "gpt-4-not-supported",
		"channel_type": "anthropic",
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatal("data.success 应为 false（模型不支持）")
	}
}

func TestHandleChannelTest_DefaultsProtocolTransformToChannelType(t *testing.T) {
	var gotPath string

	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotPath = r.URL.Path
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}],"usage":{"prompt_tokens":10,"completion_tokens":5}}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "default-protocol-transform-openai",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4.1"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, fmt.Sprintf("/admin/channels/%d/test", created.ID), map[string]any{
		"model": "gpt-4.1",
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("expected data.success=true, data=%+v", resp.Data)
	}
	if gotPath != "/v1/chat/completions" {
		t.Fatalf("path=%q, want %q", gotPath, "/v1/chat/completions")
	}
}

func TestHandleChannelTest_RejectsUnknownProtocolTransform(t *testing.T) {
	failCalls := 0
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		failCalls++
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{"id":"chatcmpl-test","choices":[{"message":{"content":"ok"}}]}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "unsupported-protocol-transform-openai",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-4.1"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, fmt.Sprintf("/admin/channels/%d/test", created.ID), map[string]any{
		"model":              "gpt-4.1",
		"protocol_transform": "unknown",
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("expected data.success=false, data=%+v", resp.Data)
	}
	dataError, _ := resp.Data["error"].(string)
	if !strings.Contains(dataError, "协议") {
		t.Fatalf("expected protocol error, got %q", dataError)
	}
	if failCalls != 0 {
		t.Fatalf("expected no upstream request, failCalls=%d", failCalls)
	}
}

func TestHandleChannelTest_UsesProtocolTransformForTranslatedRequest(t *testing.T) {
	var gotPath string
	var gotBody string

	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		body, err := io.ReadAll(r.Body)
		if err != nil {
			t.Fatalf("ReadAll failed: %v", err)
		}
		gotPath = r.URL.Path
		gotBody = string(body)

		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id": "msg_test",
			"type": "message",
			"role": "assistant",
			"content": [{"type": "text", "text": "translated ok"}],
			"model": "claude-3-5-sonnet",
			"usage": {"input_tokens": 10, "output_tokens": 5}
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:                  "anthropic-with-runtime-openai-transform",
		URL:                   upstream.URL,
		Priority:              1,
		ChannelType:           "anthropic",
		ProtocolTransformMode: model.ProtocolTransformModeLocal,
		ModelEntries:          []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:               true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, fmt.Sprintf("/admin/channels/%d/test", created.ID), map[string]any{
		"model":              "claude-3-5-sonnet",
		"protocol_transform": "openai",
		"content":            "hello",
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("expected data.success=true, data=%+v", resp.Data)
	}
	if gotPath != "/v1/messages" {
		t.Fatalf("path=%q, want %q", gotPath, "/v1/messages")
	}
	if !strings.Contains(gotBody, `"messages"`) {
		t.Fatalf("expected anthropic request body, body=%s", gotBody)
	}

	apiResp, ok := resp.Data["api_response"].(map[string]any)
	if !ok {
		t.Fatalf("expected translated api_response map, data=%+v", resp.Data)
	}
	if _, ok := apiResp["choices"]; !ok {
		t.Fatalf("expected openai-compatible api_response, got=%+v", apiResp)
	}
}

func TestHandleChannelTest_UsesCodexProtocolTransformWithBasePathPrefix(t *testing.T) {
	var gotPath string
	var gotBody string

	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		body, err := io.ReadAll(r.Body)
		if err != nil {
			t.Fatalf("ReadAll failed: %v", err)
		}
		gotPath = r.URL.Path
		gotBody = string(body)

		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id": "msg_test",
			"type": "message",
			"role": "assistant",
			"content": [{"type": "text", "text": "translated codex ok"}],
			"model": "claude-3-5-sonnet",
			"usage": {"input_tokens": 10, "output_tokens": 5}
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:                  "anthropic-with-prefixed-base-path",
		URL:                   upstream.URL + "/anthropic",
		Priority:              1,
		ChannelType:           "anthropic",
		ProtocolTransformMode: model.ProtocolTransformModeLocal,
		ModelEntries:          []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:               true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, fmt.Sprintf("/admin/channels/%d/test", created.ID), map[string]any{
		"model":              "claude-3-5-sonnet",
		"protocol_transform": "codex",
		"content":            "hello",
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("expected data.success=true, data=%+v", resp.Data)
	}
	if gotPath != "/anthropic/v1/messages" {
		t.Fatalf("path=%q, want %q", gotPath, "/anthropic/v1/messages")
	}
	if !strings.Contains(gotBody, `"messages"`) {
		t.Fatalf("expected anthropic request body, body=%s", gotBody)
	}

	apiResp, ok := resp.Data["api_response"].(map[string]any)
	if !ok {
		t.Fatalf("expected translated api_response map, data=%+v", resp.Data)
	}
	if _, ok := apiResp["object"]; !ok {
		t.Fatalf("expected codex-compatible api_response, got=%+v", apiResp)
	}
}

// TestHandleChannelTest_UpstreamModeBypassesLocalTransform 验证 mode=upstream 时
// 即使客户端选择的协议与渠道原生协议不同，也直接以客户端协议构造上游请求，不触发本地翻译。
func TestHandleChannelTest_UpstreamModeBypassesLocalTransform(t *testing.T) {
	var gotPath string
	var gotBody string

	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		body, err := io.ReadAll(r.Body)
		if err != nil {
			t.Fatalf("ReadAll failed: %v", err)
		}
		gotPath = r.URL.Path
		gotBody = string(body)

		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id": "chatcmpl_test",
			"object": "chat.completion",
			"model": "claude-3-5-sonnet",
			"choices": [{"index": 0, "message": {"role": "assistant", "content": "hello"}, "finish_reason": "stop"}],
			"usage": {"prompt_tokens": 10, "completion_tokens": 5, "total_tokens": 15}
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:                  "anthropic-upstream-passthrough",
		URL:                   upstream.URL,
		Priority:              1,
		ChannelType:           "anthropic",
		ProtocolTransformMode: model.ProtocolTransformModeUpstream,
		ModelEntries:          []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:               true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, fmt.Sprintf("/admin/channels/%d/test", created.ID), map[string]any{
		"model":              "claude-3-5-sonnet",
		"protocol_transform": "openai",
		"content":            "hello",
	}))
	c.Params = gin.Params{{Key: "id", Value: fmt.Sprintf("%d", created.ID)}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("expected data.success=true, data=%+v", resp.Data)
	}
	if gotPath != "/v1/chat/completions" {
		t.Fatalf("path=%q, want %q (mode=upstream 应直通 client 协议)", gotPath, "/v1/chat/completions")
	}
	if !strings.Contains(gotBody, `"messages"`) {
		t.Fatalf("expected openai chat request body, body=%s", gotBody)
	}
	if strings.Contains(gotBody, `"max_tokens"`) {
		t.Fatalf("body should be openai shape (no anthropic max_tokens), body=%s", gotBody)
	}

	apiResp, ok := resp.Data["api_response"].(map[string]any)
	if !ok {
		t.Fatalf("expected raw api_response map, data=%+v", resp.Data)
	}
	if _, ok := apiResp["choices"]; !ok {
		t.Fatalf("expected openai-style api_response (choices), got=%+v", apiResp)
	}
}

// TestHandleChannelTest_SuccessfulAPI 使用 mock server 模拟成功的 API 调用
func TestHandleChannelTest_SuccessfulAPI(t *testing.T) {
	// 创建 mock 上游服务器，返回成功的 Anthropic 响应
	mockResp := `{
		"id": "msg_test",
		"type": "message",
		"role": "assistant",
		"content": [{"type": "text", "text": "Hello"}],
		"model": "claude-3-5-sonnet",
		"usage": {"input_tokens": 10, "output_tokens": 5}
	}`
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(mockResp))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	// 替换 HTTP client 以使用 mock server
	srv.client = upstream.Client()

	ctx := context.Background()

	cfg := &model.Config{
		Name:         "test-success-channel",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	if !resp.Success {
		t.Fatalf("外层 APIResponse.Success 应为 true, error=%q", resp.Error)
	}

	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("data.success 应为 true（API 调用成功）, data=%+v", resp.Data)
	}
}

func TestHandleChannelTest_OpenAIRequestIncludesSessionID(t *testing.T) {
	var gotSessionID string
	var gotBody []byte

	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotSessionID = r.Header.Get("Session_id")
		if got := r.Header.Get("Session-Id"); got != "" {
			t.Fatalf("Session-Id header should be omitted, got %q", got)
		}
		gotBody, _ = io.ReadAll(r.Body)
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id": "chatcmpl_test",
			"object": "chat.completion",
			"model": "gpt-test",
			"choices": [{"index": 0, "message": {"role": "assistant", "content": "ok"}, "finish_reason": "stop"}],
			"usage": {"prompt_tokens": 1, "completion_tokens": 1, "total_tokens": 2}
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "openai-test-session-id",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "openai",
		ModelEntries: []model.ModelEntry{{Model: "gpt-test"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"}}); err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", map[string]any{
		"model":        "gpt-test",
		"channel_type": "openai",
	}))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}
	if !uuidPattern.MatchString(gotSessionID) {
		t.Fatalf("Session_id header missing or invalid: %q", gotSessionID)
	}
	var upstreamBody map[string]any
	if err := json.Unmarshal(gotBody, &upstreamBody); err != nil {
		t.Fatalf("unmarshal upstream body failed: %v; body=%s", err, gotBody)
	}
	if got, _ := upstreamBody["user"].(string); got != gotSessionID {
		t.Fatalf("body user = %q, want session id %q; body=%s", got, gotSessionID, gotBody)
	}
	if got, _ := upstreamBody["prompt_cache_key"].(string); got != gotSessionID {
		t.Fatalf("body prompt_cache_key = %q, want session id %q; body=%s", got, gotSessionID, gotBody)
	}
	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("data.success 应为 true, data=%+v", resp.Data)
	}
}

// TestHandleChannelTest_FailedAPI 使用 mock server 模拟失败的 API 调用
func TestHandleChannelTest_FailedAPI(t *testing.T) {
	// 创建 mock 上游服务器，返回 401 错误
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusUnauthorized)
		_, _ = w.Write([]byte(`{"error":{"type":"authentication_error","message":"invalid api key"}}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()

	cfg := &model.Config{
		Name:         "test-fail-channel",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-invalid-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatal("data.success 应为 false（API 调用失败 401）")
	}

	// 验证冷却决策被记录
	if action, ok := resp.Data["cooldown_action"].(string); ok {
		if action == "" {
			t.Fatal("失败时应有冷却决策记录")
		}
		t.Logf("冷却决策: %s", action)
	}
}

func TestHandleChannelTest_HonorsRequestedKeyIndexEvenIfCooled(t *testing.T) {
	mockResp := `{
		"id": "msg_test",
		"type": "message",
		"role": "assistant",
		"content": [{"type": "text", "text": "Hello"}],
		"model": "claude-3-5-sonnet",
		"usage": {"input_tokens": 10, "output_tokens": 5}
	}`
	var gotAuth string
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotAuth = r.Header.Get("Authorization")
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(mockResp))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "test-honor-cooled-key-channel",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "anthropic",
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-cooled"},
		{ChannelID: created.ID, KeyIndex: 1, APIKey: "sk-fresh"},
	}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}
	if err := srv.store.SetKeyCooldown(ctx, created.ID, 0, time.Now().Add(10*time.Minute)); err != nil {
		t.Fatalf("SetKeyCooldown failed: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
		"key_index":    0,
	}))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}
	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	if dataSuccess, _ := resp.Data["success"].(bool); !dataSuccess {
		t.Fatalf("data.success=false, data=%+v", resp.Data)
	}
	if gotAuth != "Bearer sk-cooled" {
		t.Fatalf("Authorization=%q, want Bearer sk-cooled (requested key must be honored even if cooled)", gotAuth)
	}
	if gotIndex, _ := resp.Data["tested_key_index"].(float64); gotIndex != 0 {
		t.Fatalf("tested_key_index=%v, want 0", resp.Data["tested_key_index"])
	}
}

// TestHandleChannelTest_RejectsUnknownKeyIndex 验证：请求一个不存在的 key_index 时直接报错，
// 不再静默回退到其他可用 Key（既往会调用 SelectAvailableKey）。配合 HonorsRequestedKeyIndexEvenIfCooled
// 共同保证"显式 key_index 即真"语义。
func TestHandleChannelTest_RejectsUnknownKeyIndex(t *testing.T) {
	srv := newInMemoryServer(t)
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "test-reject-unknown-key-channel",
		URL:          "http://test.example.com",
		Priority:     1,
		ChannelType:  "anthropic",
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-only"},
	}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
		"key_index":    99, // 不存在
	}))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}
	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("data.success=true, want false; data=%+v", resp.Data)
	}
	dataError, _ := resp.Data["error"].(string)
	if !strings.Contains(dataError, "Key #99") {
		t.Fatalf("data.error=%q, want mention of Key #99", dataError)
	}
}

func TestHandleChannelTest_UsesRequestAPIKeyWithoutTouchingSavedCooldown(t *testing.T) {
	mockResp := `{
		"id": "msg_test",
		"type": "message",
		"role": "assistant",
		"content": [{"type": "text", "text": "Hello"}],
		"model": "claude-3-5-sonnet",
		"usage": {"input_tokens": 10, "output_tokens": 5}
	}`
	var gotAuth string
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		gotAuth = r.Header.Get("Authorization")
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(mockResp))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "test-request-key-channel",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "anthropic",
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-saved-key"},
	}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}
	coolUntil := time.Now().Add(10 * time.Minute)
	if err := srv.store.SetKeyCooldown(ctx, created.ID, 0, coolUntil); err != nil {
		t.Fatalf("SetKeyCooldown failed: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
		"key_index":    1,
		"api_key":      "sk-unsaved-key",
	}))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}
	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	if dataSuccess, _ := resp.Data["success"].(bool); !dataSuccess {
		t.Fatalf("data.success=false, data=%+v", resp.Data)
	}
	if gotAuth != "Bearer sk-unsaved-key" {
		t.Fatalf("Authorization=%q, want request api key", gotAuth)
	}

	keys, err := srv.store.GetAPIKeys(ctx, created.ID)
	if err != nil {
		t.Fatalf("GetAPIKeys failed: %v", err)
	}
	if len(keys) != 1 {
		t.Fatalf("keys len=%d, want 1", len(keys))
	}
	if keys[0].CooldownUntil == 0 {
		t.Fatalf("saved key cooldown was reset for an unsaved request key")
	}
}

func TestHandleChannelTest_WritesManualTestLog(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusUnauthorized)
		_, _ = w.Write([]byte(`{"error":{"type":"authentication_error","message":"invalid api key"}}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()
	ctx := context.Background()
	now := time.Now().Add(-time.Minute)

	created, err := srv.store.CreateConfig(ctx, &model.Config{
		Name:         "manual-test-log-channel",
		URL:          upstream.URL,
		Priority:     1,
		ChannelType:  "anthropic",
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	})
	if err != nil {
		t.Fatalf("CreateConfig failed: %v", err)
	}
	if err := srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-invalid-key"}}); err != nil {
		t.Fatalf("CreateAPIKeysBatch failed: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
	}))
	c.Request.RemoteAddr = "198.51.100.10:12345"
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("status=%d, want %d, body=%s", w.Code, http.StatusOK, w.Body.String())
	}

	logs, err := srv.store.ListLogs(ctx, now, 10, 0, &model.LogFilter{LogSource: model.LogSourceManualTest})
	if err != nil {
		t.Fatalf("ListLogs failed: %v", err)
	}
	if len(logs) != 1 {
		t.Fatalf("expected 1 manual test log, got %d", len(logs))
	}
	entry := logs[0]
	if entry.LogSource != model.LogSourceManualTest {
		t.Fatalf("LogSource=%q, want %q", entry.LogSource, model.LogSourceManualTest)
	}
	if entry.StatusCode != http.StatusUnauthorized {
		t.Fatalf("StatusCode=%d, want %d", entry.StatusCode, http.StatusUnauthorized)
	}
	if entry.ClientIP != "198.51.100.10" {
		t.Fatalf("ClientIP=%q, want %q", entry.ClientIP, "198.51.100.10")
	}
	if entry.AuthTokenID != 0 {
		t.Fatalf("AuthTokenID=%d, want 0", entry.AuthTokenID)
	}
	if entry.BaseURL != upstream.URL {
		t.Fatalf("BaseURL=%q, want %q", entry.BaseURL, upstream.URL)
	}
}

func TestHandleChannelTest_SSESoftErrorTriggersCooldown(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/event-stream")
		w.WriteHeader(http.StatusOK)
		_, _ = fmt.Fprint(w, "event: \n")
		_, _ = fmt.Fprint(w, "data: {\"error\":{\"code\":\"1113\",\"message\":\"Insufficient balance or no resource package. Please recharge.\"},\"request_id\":\"req_1113\"}\n\n")
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()
	cfg := &model.Config{
		Name:         "test-sse-soft-error",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "claude-3-5-sonnet"}},
		Enabled:      true,
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-soft-error"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "claude-3-5-sonnet",
		"channel_type": "anthropic",
		"stream":       true,
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	if !resp.Success {
		t.Fatalf("外层 APIResponse.Success 应为 true, error=%q", resp.Error)
	}

	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("data.success 应为 false, data=%+v", resp.Data)
	}

	if got, _ := resp.Data["error"].(string); got != "Insufficient balance or no resource package. Please recharge." {
		t.Fatalf("错误信息不对，got=%q data=%+v", got, resp.Data)
	}

	if got, _ := resp.Data["cooldown_action"].(string); got != "channel_cooldown_applied" {
		t.Fatalf("1113 软错误在单 Key 渠道应升级为渠道冷却，got=%q data=%+v", got, resp.Data)
	}
}

func TestHandleChannelTest_EventStreamHeaderWithJSONBodyFallback(t *testing.T) {
	// 模拟“Content-Type=event-stream，但实际返回完整JSON”场景
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/event-stream")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id":"resp_test",
			"status":"completed",
			"output":[
				{
					"type":"message",
					"content":[{"type":"output_text","text":"fallback text"}]
				}
			],
			"usage":{"input_tokens":12,"output_tokens":8}
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()
	cfg := &model.Config{
		Name:         "test-codex-json-fallback",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "gpt-5.2"}},
		Enabled:      true,
		ChannelType:  "codex",
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "gpt-5.2",
		"channel_type": "codex",
		"stream":       false,
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if !dataSuccess {
		t.Fatalf("data.success 应为 true, data=%+v", resp.Data)
	}

	responseText, _ := resp.Data["response_text"].(string)
	if responseText == "" {
		t.Fatalf("应解析出 response_text, data=%+v", resp.Data)
	}
	if responseText != "fallback text" {
		t.Fatalf("response_text 解析错误: %q", responseText)
	}

	message, _ := resp.Data["message"].(string)
	if message != "API测试成功" {
		t.Fatalf("应按非流式成功文案返回，实际: %q", message)
	}
}

func TestHandleChannelTest_CodexJSONFailedResponseShouldBeFailure(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`{
			"id":"resp_failed",
			"object":"response",
			"status":"failed",
			"error":{
				"code":"server_error",
				"message":"upstream failed"
			},
			"output":[]
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()
	cfg := &model.Config{
		Name:         "test-codex-json-failed",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "gpt-5.4"}},
		Enabled:      true,
		ChannelType:  "codex",
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "gpt-5.4",
		"channel_type": "codex",
		"stream":       false,
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("data.success 应为 false, data=%+v", resp.Data)
	}

	errorMsg, _ := resp.Data["error"].(string)
	if errorMsg != "upstream failed" {
		t.Fatalf("应返回上游错误信息，实际: %q, data=%+v", errorMsg, resp.Data)
	}

	if message, _ := resp.Data["message"].(string); message != "" {
		t.Fatalf("失败响应不应返回成功文案，实际: %q", message)
	}
}

func TestHandleChannelTest_StringAPIErrorShouldExposeUpstreamMessage(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/json; charset=utf-8")
		w.WriteHeader(http.StatusTooManyRequests)
		_, _ = w.Write([]byte(`{
			"error":"由于负载过高，为了尽量保证用户体验，本站已开启限流，当前用户本周无法使用，请下周重试",
			"type":"error"
		}`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()
	cfg := &model.Config{
		Name:         "test-string-api-error",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "gpt-5.4"}},
		Enabled:      true,
		ChannelType:  "openai",
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "gpt-5.4",
		"channel_type": "openai",
		"stream":       false,
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("data.success 应为 false, data=%+v", resp.Data)
	}

	errorMsg, _ := resp.Data["error"].(string)
	expected := "由于负载过高，为了尽量保证用户体验，本站已开启限流，当前用户本周无法使用，请下周重试"
	if errorMsg != expected {
		t.Fatalf("应返回上游字符串错误信息，实际: %q, data=%+v", errorMsg, resp.Data)
	}
}

func TestHandleChannelTest_HTMLBlockPageShouldBeFailure(t *testing.T) {
	upstream := newTestHTTPServer(t, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "text/html; charset=utf-8")
		w.WriteHeader(http.StatusOK)
		_, _ = w.Write([]byte(`<!DOCTYPE html>
<html lang="zh-CN">
<head>
	<meta charset="UTF-8">
	<title>您的IP已被封锁</title>
</head>
<body>
	<div class="container">
		<h1>当前 IP 已被封锁</h1>
		<p>暂时无法访问本站内容。</p>
	</div>
</body>
</html>`))
	}))
	defer upstream.Close()

	srv := newInMemoryServer(t)
	srv.client = upstream.Client()

	ctx := context.Background()
	cfg := &model.Config{
		Name:         "test-html-block-page",
		URL:          upstream.URL,
		Priority:     1,
		ModelEntries: []model.ModelEntry{{Model: "gpt-5.4"}},
		Enabled:      true,
		ChannelType:  "openai",
	}
	created, err := srv.store.CreateConfig(ctx, cfg)
	if err != nil {
		t.Fatalf("创建测试渠道失败: %v", err)
	}

	err = srv.store.CreateAPIKeysBatch(ctx, []*model.APIKey{
		{ChannelID: created.ID, KeyIndex: 0, APIKey: "sk-test-key"},
	})
	if err != nil {
		t.Fatalf("添加 API key 失败: %v", err)
	}

	channelID := fmt.Sprintf("%d", created.ID)
	reqBody := map[string]any{
		"model":        "gpt-5.4",
		"channel_type": "openai",
		"stream":       false,
	}

	c, w := newTestContext(t, newJSONRequest(t, http.MethodPost, "/admin/channels/"+channelID+"/test", reqBody))
	c.Params = gin.Params{{Key: "id", Value: channelID}}

	srv.HandleChannelTest(c)

	if w.Code != http.StatusOK {
		t.Fatalf("期望 200, 实际 %d, 响应: %s", w.Code, w.Body.String())
	}

	resp := mustParseAPIResponse[map[string]any](t, w.Body.Bytes())
	dataSuccess, _ := resp.Data["success"].(bool)
	if dataSuccess {
		t.Fatalf("HTML 封禁页必须判定为失败, data=%+v", resp.Data)
	}

	errorMsg, _ := resp.Data["error"].(string)
	if !strings.Contains(errorMsg, "IP") || !strings.Contains(errorMsg, "封锁") {
		t.Fatalf("应提炼出上游封禁信息，实际: %q, data=%+v", errorMsg, resp.Data)
	}

	rawResp, _ := resp.Data["raw_response"].(string)
	if !strings.Contains(rawResp, "<title>您的IP已被封锁</title>") {
		t.Fatalf("应保留原始 HTML 响应，实际: %q", rawResp)
	}

	if message, _ := resp.Data["message"].(string); message != "" {
		t.Fatalf("失败响应不应返回成功文案，实际: %q", message)
	}
}

func TestShouldFallbackToNextURL_StructuredSoftErrors(t *testing.T) {
	t.Run("key_level_soft_error_should_not_fallback_or_cooldown_url", func(t *testing.T) {
		result := map[string]any{
			"success":     false,
			"status_code": http.StatusOK,
			"api_error": map[string]any{
				"error": map[string]any{
					"code":    "1113",
					"message": "Insufficient balance or no resource package. Please recharge.",
				},
			},
			"response_headers": map[string]string{
				"Content-Type": "text/event-stream",
			},
		}

		continueFallback, shouldCooldown := shouldFallbackToNextURL(result)
		if continueFallback || shouldCooldown {
			t.Fatalf("Key级软错误不应继续切URL或冷却URL，got fallback=%v cooldown=%v", continueFallback, shouldCooldown)
		}
	})

	t.Run("channel_level_soft_error_should_fallback_and_cooldown_url", func(t *testing.T) {
		result := map[string]any{
			"success":     false,
			"status_code": http.StatusOK,
			"api_error": map[string]any{
				"type": "error",
				"error": map[string]any{
					"type":    "api_error",
					"message": "upstream overloaded",
				},
			},
		}

		continueFallback, shouldCooldown := shouldFallbackToNextURL(result)
		if !continueFallback || !shouldCooldown {
			t.Fatalf("渠道级软错误应继续切URL并冷却当前URL，got fallback=%v cooldown=%v", continueFallback, shouldCooldown)
		}
	})
}