fix(web): address sogou search review feedback

pkg/config/config_test.go

@@ -760,6 +760,13 @@ func TestDefaultConfig_WebPreferNativeEnabled(t *testing.T) {
 	}
 }
 
+func TestDefaultConfig_WebProviderIsAuto(t *testing.T) {
+	cfg := DefaultConfig()
+	if cfg.Tools.Web.Provider != "auto" {
+		t.Fatalf("DefaultConfig().Tools.Web.Provider = %q, want auto", cfg.Tools.Web.Provider)
+	}
+}
+
 func TestDefaultConfig_ToolFeedbackDisabled(t *testing.T) {
 	cfg := DefaultConfig()
 	if cfg.Agents.Defaults.ToolFeedback.Enabled {

pkg/config/defaults.go

@@ -278,7 +278,7 @@ func DefaultConfig() *Config {
 				ToolConfig: ToolConfig{
 					Enabled: true,
 				},
-				Provider:        "sogou",
+				Provider:        "auto",
 				PreferNative:    true,
 				Proxy:           "",
 				FetchLimitBytes: 10 * 1024 * 1024, // 10MB by default

pkg/tools/web.go

@@ -117,6 +117,21 @@ func extractSogouURL(href string) string {
 	return decoded
 }
 
+func applySogouRangeHint(query string, rangeCode string) string {
+	switch rangeCode {
+	case "d":
+		return query + " 最近一天"
+	case "w":
+		return query + " 最近一周"
+	case "m":
+		return query + " 最近一个月"
+	case "y":
+		return query + " 最近一年"
+	default:
+		return query
+	}
+}
+
 func normalizeSearchRange(raw string) (string, error) {
 	rangeCode := strings.ToLower(strings.TrimSpace(raw))
 	switch rangeCode {
@@ -244,6 +259,10 @@ func (p *BraveSearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.keyPool == nil || len(p.keyPool.keys) == 0 {
+		return "", errors.New("no API key provided")
+	}
+
 	searchURL := fmt.Sprintf("https://api.search.brave.com/res/v1/web/search?q=%s&count=%d",
 		url.QueryEscape(query), count)
 	if freshness := mapBraveFreshness(rangeCode); freshness != "" {
@@ -343,6 +362,10 @@ func (p *TavilySearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.keyPool == nil || len(p.keyPool.keys) == 0 {
+		return "", errors.New("no API key provided")
+	}
+
 	searchURL := p.baseURL
 	if searchURL == "" {
 		searchURL = "https://api.tavily.com/search"
@@ -462,7 +485,7 @@ func (p *SogouSearchProvider) Search(
 
 	for page := 1; page <= maxPages && len(results) < count; page++ {
 		params := url.Values{}
-		params.Set("keyword", query)
+		params.Set("keyword", applySogouRangeHint(query, rangeCode))
 		params.Set("v", "5")
 		params.Set("p", fmt.Sprintf("%d", page))
 
@@ -656,6 +679,10 @@ func (p *PerplexitySearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.keyPool == nil || len(p.keyPool.keys) == 0 {
+		return "", errors.New("no API key provided")
+	}
+
 	searchURL := "https://api.perplexity.ai/chat/completions"
 
 	var lastErr error
@@ -769,6 +796,10 @@ func (p *SearXNGSearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.baseURL == "" {
+		return "", errors.New("no SearXNG URL provided")
+	}
+
 	searchURL := fmt.Sprintf("%s/search?q=%s&format=json&categories=general",
 		strings.TrimSuffix(p.baseURL, "/"),
 		url.QueryEscape(query))
@@ -843,6 +874,10 @@ func (p *GLMSearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.apiKey == "" {
+		return "", errors.New("no API key provided")
+	}
+
 	searchURL := p.baseURL
 	if searchURL == "" {
 		searchURL = "https://open.bigmodel.cn/api/paas/v4/web_search"
@@ -932,6 +967,10 @@ func (p *BaiduSearchProvider) Search(
 	count int,
 	rangeCode string,
 ) (string, error) {
+	if p.apiKey == "" {
+		return "", errors.New("no API key provided")
+	}
+
 	searchURL := p.baseURL
 	if searchURL == "" {
 		searchURL = "https://qianfan.baidubce.com/v2/ai_search/web_search"
@@ -1065,7 +1104,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			client: client,
 		}, maxResults, nil
 	case "perplexity":
-		if !opts.PerplexityEnabled || len(opts.PerplexityAPIKeys) == 0 {
+		if !opts.PerplexityEnabled {
 			return nil, 0, nil
 		}
 		client, err := utils.CreateHTTPClient(opts.Proxy, perplexityTimeout)
@@ -1082,7 +1121,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			client:  client,
 		}, maxResults, nil
 	case "brave":
-		if !opts.BraveEnabled || len(opts.BraveAPIKeys) == 0 {
+		if !opts.BraveEnabled {
 			return nil, 0, nil
 		}
 		client, err := utils.CreateHTTPClient(opts.Proxy, searchTimeout)
@@ -1099,7 +1138,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			client:  client,
 		}, maxResults, nil
 	case "searxng":
-		if !opts.SearXNGEnabled || opts.SearXNGBaseURL == "" {
+		if !opts.SearXNGEnabled {
 			return nil, 0, nil
 		}
 		maxResults := 10
@@ -1110,7 +1149,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			baseURL: opts.SearXNGBaseURL,
 		}, maxResults, nil
 	case "tavily":
-		if !opts.TavilyEnabled || len(opts.TavilyAPIKeys) == 0 {
+		if !opts.TavilyEnabled {
 			return nil, 0, nil
 		}
 		client, err := utils.CreateHTTPClient(opts.Proxy, searchTimeout)
@@ -1144,7 +1183,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			client: client,
 		}, maxResults, nil
 	case "baidu_search":
-		if !opts.BaiduSearchEnabled || opts.BaiduSearchAPIKey == "" {
+		if !opts.BaiduSearchEnabled {
 			return nil, 0, nil
 		}
 		client, err := utils.CreateHTTPClient(opts.Proxy, perplexityTimeout)
@@ -1162,7 +1201,7 @@ func (opts WebSearchToolOptions) providerByName(name string) (SearchProvider, in
 			client:  client,
 		}, maxResults, nil
 	case "glm_search":
-		if !opts.GLMSearchEnabled || opts.GLMSearchAPIKey == "" {
+		if !opts.GLMSearchEnabled {
 			return nil, 0, nil
 		}
 		client, err := utils.CreateHTTPClient(opts.Proxy, searchTimeout)
@@ -1196,7 +1235,7 @@ func NewWebSearchTool(opts WebSearchToolOptions) (*WebSearchTool, error) {
 	}
 
 	if provider == nil {
-		for _, name := range []string{"sogou", "perplexity", "brave", "searxng", "tavily", "duckduckgo", "baidu_search", "glm_search"} {
+		for _, name := range []string{"perplexity", "brave", "searxng", "tavily", "sogou", "duckduckgo", "baidu_search", "glm_search"} {
 			provider, maxResults, err = opts.providerByName(name)
 			if err != nil {
 				return nil, err

pkg/tools/web_test.go

@@ -385,14 +385,24 @@ func TestWebFetchTool_PayloadTooLarge(t *testing.T) {
 	}
 }
 
-// TestWebTool_WebSearch_NoApiKey verifies that no tool is created when API key is missing
+// TestWebTool_WebSearch_NoApiKey verifies missing credentials are surfaced at execution time.
 func TestWebTool_WebSearch_NoApiKey(t *testing.T) {
 	tool, err := NewWebSearchTool(WebSearchToolOptions{BraveEnabled: true, BraveAPIKeys: nil})
 	if err != nil {
 		t.Fatalf("Unexpected error: %v", err)
 	}
-	if tool != nil {
-		t.Errorf("Expected nil tool when Brave API key is empty")
+	if tool == nil {
+		t.Fatalf("Expected tool when Brave is enabled, even without API keys")
+	}
+
+	result := tool.Execute(context.Background(), map[string]any{
+		"query": "test query",
+	})
+	if !result.IsError {
+		t.Fatalf("Expected missing Brave API key to return error")
+	}
+	if !strings.Contains(result.ForLLM, "no API key provided") {
+		t.Fatalf("Unexpected error message: %s", result.ForLLM)
 	}
 
 	// Also nil when nothing is enabled
@@ -1693,6 +1703,29 @@ func TestWebTool_SogouSearch_Success(t *testing.T) {
 	}
 }
 
+func TestApplySogouRangeHint(t *testing.T) {
+	tests := []struct {
+		name      string
+		query     string
+		rangeCode string
+		want      string
+	}{
+		{name: "empty range", query: "golang", rangeCode: "", want: "golang"},
+		{name: "day", query: "golang", rangeCode: "d", want: "golang 最近一天"},
+		{name: "week", query: "golang", rangeCode: "w", want: "golang 最近一周"},
+		{name: "month", query: "golang", rangeCode: "m", want: "golang 最近一个月"},
+		{name: "year", query: "golang", rangeCode: "y", want: "golang 最近一年"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := applySogouRangeHint(tt.query, tt.rangeCode); got != tt.want {
+				t.Fatalf("applySogouRangeHint(%q, %q) = %q, want %q", tt.query, tt.rangeCode, got, tt.want)
+			}
+		})
+	}
+}
+
 func TestWebTool_SogouPriorityAndExplicitProvider(t *testing.T) {
 	tool, err := NewWebSearchTool(WebSearchToolOptions{
 		SogouEnabled:         true,
@@ -1722,6 +1755,24 @@ func TestWebTool_SogouPriorityAndExplicitProvider(t *testing.T) {
 	}
 }
 
+func TestWebTool_AutoProviderPrefersConfiguredProvidersBeforeSogou(t *testing.T) {
+	tool, err := NewWebSearchTool(WebSearchToolOptions{
+		SogouEnabled:         true,
+		SogouMaxResults:      5,
+		BraveEnabled:         true,
+		BraveAPIKeys:         []string{"brave-key"},
+		BraveMaxResults:      5,
+		DuckDuckGoEnabled:    true,
+		DuckDuckGoMaxResults: 5,
+	})
+	if err != nil {
+		t.Fatalf("NewWebSearchTool() error: %v", err)
+	}
+	if _, ok := tool.provider.(*BraveSearchProvider); !ok {
+		t.Fatalf("expected BraveSearchProvider, got %T", tool.provider)
+	}
+}
+
 type roundTripFunc func(*http.Request) (*http.Response, error)
 
 func (fn roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {

web/backend/api/tools.go

@@ -43,11 +43,12 @@ type webSearchProviderOption struct {
 }
 
 type webSearchProviderConfig struct {
-	Enabled    bool   `json:"enabled"`
-	MaxResults int    `json:"max_results"`
-	BaseURL    string `json:"base_url,omitempty"`
-	APIKey     string `json:"api_key,omitempty"`
-	APIKeySet  bool   `json:"api_key_set,omitempty"`
+	Enabled    bool     `json:"enabled"`
+	MaxResults int      `json:"max_results"`
+	BaseURL    string   `json:"base_url,omitempty"`
+	APIKey     string   `json:"api_key,omitempty"`
+	APIKeys    []string `json:"api_keys,omitempty"`
+	APIKeySet  bool     `json:"api_key_set,omitempty"`
 }
 
 type webSearchConfigResponse struct {
@@ -416,23 +417,23 @@ func (h *Handler) handleUpdateWebSearchConfig(w http.ResponseWriter, r *http.Req
 	if settings, ok := req.Settings["brave"]; ok {
 		cfg.Tools.Web.Brave.Enabled = settings.Enabled
 		cfg.Tools.Web.Brave.MaxResults = settings.MaxResults
-		if key := strings.TrimSpace(settings.APIKey); key != "" {
-			cfg.Tools.Web.Brave.SetAPIKey(key)
+		if keys, ok := normalizeWebSearchAPIKeys(settings.APIKeys, settings.APIKey); ok {
+			cfg.Tools.Web.Brave.SetAPIKeys(keys)
 		}
 	}
 	if settings, ok := req.Settings["tavily"]; ok {
 		cfg.Tools.Web.Tavily.Enabled = settings.Enabled
 		cfg.Tools.Web.Tavily.MaxResults = settings.MaxResults
 		cfg.Tools.Web.Tavily.BaseURL = strings.TrimSpace(settings.BaseURL)
-		if key := strings.TrimSpace(settings.APIKey); key != "" {
-			cfg.Tools.Web.Tavily.SetAPIKey(key)
+		if keys, ok := normalizeWebSearchAPIKeys(settings.APIKeys, settings.APIKey); ok {
+			cfg.Tools.Web.Tavily.SetAPIKeys(keys)
 		}
 	}
 	if settings, ok := req.Settings["perplexity"]; ok {
 		cfg.Tools.Web.Perplexity.Enabled = settings.Enabled
 		cfg.Tools.Web.Perplexity.MaxResults = settings.MaxResults
-		if key := strings.TrimSpace(settings.APIKey); key != "" {
-			cfg.Tools.Web.Perplexity.SetAPIKey(key)
+		if keys, ok := normalizeWebSearchAPIKeys(settings.APIKeys, settings.APIKey); ok {
+			cfg.Tools.Web.Perplexity.APIKeys = config.SimpleSecureStrings(keys...)
 		}
 	}
 	if settings, ok := req.Settings["searxng"]; ok {
@@ -479,6 +480,31 @@ func normalizeWebSearchProvider(provider string) string {
 	}
 }
 
+func normalizeWebSearchAPIKeys(apiKeys []string, apiKey string) ([]string, bool) {
+	if apiKeys != nil {
+		keys := make([]string, 0, len(apiKeys))
+		seen := make(map[string]struct{}, len(apiKeys))
+		for _, key := range apiKeys {
+			trimmed := strings.TrimSpace(key)
+			if trimmed == "" {
+				continue
+			}
+			if _, ok := seen[trimmed]; ok {
+				continue
+			}
+			seen[trimmed] = struct{}{}
+			keys = append(keys, trimmed)
+		}
+		return keys, true
+	}
+
+	if trimmed := strings.TrimSpace(apiKey); trimmed != "" {
+		return []string{trimmed}, true
+	}
+
+	return nil, false
+}
+
 func buildWebSearchConfigResponse(cfg *config.Config) webSearchConfigResponse {
 	current := resolveCurrentWebSearchProvider(cfg)
 	settings := map[string]webSearchProviderConfig{
@@ -614,7 +640,7 @@ func resolveCurrentWebSearchProvider(cfg *config.Config) string {
 	if selected != "" && selected != "auto" && webSearchProviderConfigured(cfg, selected) {
 		return selected
 	}
-	for _, name := range []string{"sogou", "perplexity", "brave", "searxng", "tavily", "duckduckgo", "baidu_search", "glm_search"} {
+	for _, name := range []string{"perplexity", "brave", "searxng", "tavily", "sogou", "duckduckgo", "baidu_search", "glm_search"} {
 		if webSearchProviderConfigured(cfg, name) {
 			return name
 		}

web/backend/api/tools_test.go

@@ -245,6 +245,15 @@ func TestHandleUpdateWebSearchConfig(t *testing.T) {
 	configPath, cleanup := setupOAuthTestEnv(t)
 	defer cleanup()
 
+	cfg, err := config.LoadConfig(configPath)
+	if err != nil {
+		t.Fatalf("LoadConfig() error = %v", err)
+	}
+	cfg.Tools.Web.Brave.SetAPIKeys([]string{"brave-old-1", "brave-old-2"})
+	if err := config.SaveConfig(configPath, cfg); err != nil {
+		t.Fatalf("SaveConfig() error = %v", err)
+	}
+
 	h := NewHandler(configPath)
 	mux := http.NewServeMux()
 	h.RegisterRoutes(mux)
@@ -294,3 +303,89 @@ func TestHandleUpdateWebSearchConfig(t *testing.T) {
 		t.Fatalf("brave api key not updated")
 	}
 }
+
+func TestHandleUpdateWebSearchConfig_PreservesAndReplacesMultiKeys(t *testing.T) {
+	configPath, cleanup := setupOAuthTestEnv(t)
+	defer cleanup()
+
+	cfg, err := config.LoadConfig(configPath)
+	if err != nil {
+		t.Fatalf("LoadConfig() error = %v", err)
+	}
+	cfg.Tools.Web.Brave.SetAPIKeys([]string{"brave-old-1", "brave-old-2"})
+	if err := config.SaveConfig(configPath, cfg); err != nil {
+		t.Fatalf("SaveConfig() error = %v", err)
+	}
+
+	h := NewHandler(configPath)
+	mux := http.NewServeMux()
+	h.RegisterRoutes(mux)
+
+	rec := httptest.NewRecorder()
+	req := httptest.NewRequest(
+		http.MethodPut,
+		"/api/tools/web-search-config",
+		bytes.NewBufferString(`{
+			"provider":"auto",
+			"prefer_native":true,
+			"proxy":"",
+			"settings":{
+				"brave":{"enabled":true,"max_results":7}
+			}
+		}`),
+	)
+	req.Header.Set("Content-Type", "application/json")
+	mux.ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want %d, body=%s", rec.Code, http.StatusOK, rec.Body.String())
+	}
+
+	updated, err := config.LoadConfig(configPath)
+	if err != nil {
+		t.Fatalf("LoadConfig() error = %v", err)
+	}
+	if got := updated.Tools.Web.Brave.APIKeys.Values(); len(got) != 2 || got[0] != "brave-old-1" || got[1] != "brave-old-2" {
+		t.Fatalf("brave api keys should be preserved, got %#v", got)
+	}
+
+	rec = httptest.NewRecorder()
+	req = httptest.NewRequest(
+		http.MethodPut,
+		"/api/tools/web-search-config",
+		bytes.NewBufferString(`{
+			"provider":"auto",
+			"prefer_native":true,
+			"proxy":"",
+			"settings":{
+				"brave":{"enabled":true,"max_results":7,"api_keys":["brave-new-1","brave-new-2","brave-new-1"]}
+			}
+		}`),
+	)
+	req.Header.Set("Content-Type", "application/json")
+	mux.ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status = %d, want %d, body=%s", rec.Code, http.StatusOK, rec.Body.String())
+	}
+
+	updated, err = config.LoadConfig(configPath)
+	if err != nil {
+		t.Fatalf("LoadConfig() error = %v", err)
+	}
+	if got := updated.Tools.Web.Brave.APIKeys.Values(); len(got) != 2 || got[0] != "brave-new-1" || got[1] != "brave-new-2" {
+		t.Fatalf("brave api keys should be replaced by api_keys, got %#v", got)
+	}
+}
+
+func TestResolveCurrentWebSearchProvider_PrefersConfiguredProvidersBeforeSogou(t *testing.T) {
+	cfg := config.DefaultConfig()
+	cfg.Tools.Web.Provider = "auto"
+	cfg.Tools.Web.Sogou.Enabled = true
+	cfg.Tools.Web.Brave.Enabled = true
+	cfg.Tools.Web.Brave.SetAPIKey("brave-test-key")
+
+	if got := resolveCurrentWebSearchProvider(cfg); got != "brave" {
+		t.Fatalf("resolveCurrentWebSearchProvider() = %q, want brave", got)
+	}
+}