增加搜索

main.go

@@ -30,6 +30,9 @@ import (
 const (
 	defaultOpenAIBaseURL = "https://ark.cn-beijing.volces.com/api/v3"
 	defaultOpenAITimeout = 120
+	defaultSearchBaseURL = "https://api.duckduckgo.com/"
+	defaultSearchTimeout = 10
+	defaultSearchCount   = 5
 )
 
 type OpenAIConfig struct {
@@ -43,6 +46,45 @@ type OpenAIConfig struct {
 
 type OpenAIConfigs []OpenAIConfig
 
+type SearchConfig struct {
+	Name     string `yaml:"name" json:"name"`
+	Active   bool   `yaml:"active,omitempty" json:"active"`
+	Enabled  bool   `yaml:"enabled" json:"enabled"`
+	Provider string `yaml:"provider" json:"provider"`
+	APIKey   string `yaml:"api_key" json:"-"`
+	BaseURL  string `yaml:"base_url" json:"base_url"`
+	Count    int    `yaml:"count" json:"count"`
+	Timeout  int    `yaml:"timeout" json:"timeout"`
+}
+
+type SearchConfigs []SearchConfig
+
+func (configs *SearchConfigs) UnmarshalYAML(value *yaml.Node) error {
+	switch value.Kind {
+	case yaml.SequenceNode:
+		var items []SearchConfig
+		if err := value.Decode(&items); err != nil {
+			return err
+		}
+		*configs = items
+	case yaml.MappingNode:
+		var item SearchConfig
+		if err := value.Decode(&item); err != nil {
+			return err
+		}
+		*configs = []SearchConfig{item}
+	case yaml.ScalarNode:
+		if value.Tag == "!!null" {
+			*configs = nil
+			return nil
+		}
+		return fmt.Errorf("search 配置格式无效")
+	default:
+		return fmt.Errorf("search 配置格式无效")
+	}
+	return nil
+}
+
 func (configs *OpenAIConfigs) UnmarshalYAML(value *yaml.Node) error {
 	switch value.Kind {
 	case yaml.SequenceNode:
@@ -75,14 +117,7 @@ type Config struct {
 		Address string `yaml:"address"`
 	} `yaml:"server"`
 	OpenAI OpenAIConfigs `yaml:"openai"`
-	Search struct {
+	Search SearchConfigs `yaml:"search"`
-		Enabled  bool   `yaml:"enabled"`
-		Provider string `yaml:"provider"`
-		APIKey   string `yaml:"api_key"`
-		BaseURL  string `yaml:"base_url"`
-		Count    int    `yaml:"count"`
-		Timeout  int    `yaml:"timeout"`
-	} `yaml:"search"`
 }
 
 func defaultOpenAIConfig() OpenAIConfig {
@@ -94,15 +129,24 @@ func defaultOpenAIConfig() OpenAIConfig {
 	}
 }
 
+func defaultSearchConfig() SearchConfig {
+	return SearchConfig{
+		Name:     "duckduckgo",
+		Active:   true,
+		Enabled:  true,
+		Provider: "duckduckgo",
+		BaseURL:  defaultSearchBaseURL,
+		Count:    defaultSearchCount,
+		Timeout:  defaultSearchTimeout,
+	}
+}
+
 func defaultConfig() Config {
 	var cfg Config
 	cfg.Server.Mode = "tcp"
 	cfg.Server.Address = "0.0.0.0:8080"
 	cfg.OpenAI = OpenAIConfigs{defaultOpenAIConfig()}
-	cfg.Search.Provider = "brave"
+	cfg.Search = SearchConfigs{defaultSearchConfig()}
-	cfg.Search.BaseURL = "https://api.search.brave.com/res/v1/web/search"
-	cfg.Search.Count = 5
-	cfg.Search.Timeout = 10
 	return cfg
 }
 
@@ -128,8 +172,15 @@ func loadConfig(path string) (*Config, error) {
 			cfg.OpenAI[i].APIKey = key
 		}
 	}
+	if _, err := normalizeSearchConfigs(&cfg); err != nil {
+		return nil, err
+	}
 	if key := os.Getenv("BRAVE_SEARCH_API_KEY"); key != "" {
-		cfg.Search.APIKey = key
+		for i := range cfg.Search {
+			if strings.ToLower(cfg.Search[i].Provider) == "brave" {
+				cfg.Search[i].APIKey = key
+			}
+		}
 	}
 	return &cfg, nil
 }
@@ -181,36 +232,14 @@ func ensureConfigFile(path string) error {
 		changed = true
 	}
 
-	search, _ := raw["search"].(map[string]any)
+	if _, ok := raw["search"].([]any); !ok {
-	if search == nil {
-		cfg.Search = defaults.Search
-		changed = true
-	} else {
-		if _, ok := search["enabled"]; !ok {
-			cfg.Search.Enabled = defaults.Search.Enabled
 		changed = true
 	}
-		if _, ok := search["provider"]; !ok {
+	if normalized, err := normalizeSearchConfigs(&cfg); err != nil {
-			cfg.Search.Provider = defaults.Search.Provider
+		return err
+	} else if normalized {
 		changed = true
 	}
-		if _, ok := search["api_key"]; !ok {
-			cfg.Search.APIKey = defaults.Search.APIKey
-			changed = true
-		}
-		if _, ok := search["base_url"]; !ok {
-			cfg.Search.BaseURL = defaults.Search.BaseURL
-			changed = true
-		}
-		if _, ok := search["count"]; !ok {
-			cfg.Search.Count = defaults.Search.Count
-			changed = true
-		}
-		if _, ok := search["timeout"]; !ok {
-			cfg.Search.Timeout = defaults.Search.Timeout
-			changed = true
-		}
-	}
 
 	if !changed {
 		return nil
@@ -270,6 +299,74 @@ func normalizeOpenAIConfigs(cfg *Config) (bool, error) {
 	return changed, nil
 }
 
+func normalizeSearchConfigs(cfg *Config) (bool, error) {
+	changed := false
+	if len(cfg.Search) == 0 {
+		cfg.Search = SearchConfigs{defaultSearchConfig()}
+		changed = true
+	}
+
+	activeIndex := -1
+	seen := map[string]bool{}
+	for i := range cfg.Search {
+		profile := &cfg.Search[i]
+		profile.Provider = strings.ToLower(strings.TrimSpace(profile.Provider))
+		if profile.Provider == "" {
+			profile.Provider = "duckduckgo"
+			changed = true
+		}
+		name := strings.TrimSpace(profile.Name)
+		if name == "" {
+			name = profile.Provider
+			if seen[name] {
+				name = fmt.Sprintf("%s-%d", profile.Provider, i+1)
+			}
+			profile.Name = name
+			changed = true
+		} else if name != profile.Name {
+			profile.Name = name
+			changed = true
+		}
+		if seen[name] {
+			return changed, fmt.Errorf("search 配置名称重复: %s", name)
+		}
+		seen[name] = true
+
+		if strings.TrimSpace(profile.BaseURL) == "" {
+			switch profile.Provider {
+			case "duckduckgo", "ddg":
+				profile.BaseURL = defaultSearchBaseURL
+			case "brave":
+				profile.BaseURL = "https://api.search.brave.com/res/v1/web/search"
+			default:
+				return changed, fmt.Errorf("暂不支持搜索服务: %s", profile.Provider)
+			}
+			changed = true
+		}
+		if profile.Count <= 0 {
+			profile.Count = defaultSearchCount
+			changed = true
+		}
+		if profile.Timeout <= 0 {
+			profile.Timeout = defaultSearchTimeout
+			changed = true
+		}
+		if profile.Active {
+			if activeIndex == -1 {
+				activeIndex = i
+			} else {
+				profile.Active = false
+				changed = true
+			}
+		}
+	}
+	if activeIndex == -1 {
+		cfg.Search[0].Active = true
+		changed = true
+	}
+	return changed, nil
+}
+
 func writeConfig(path string, cfg Config) error {
 	data, err := yaml.Marshal(&cfg)
 	if err != nil {
@@ -323,7 +420,7 @@ type OpenAIState struct {
 	activeName string
 }
 
-type openAIActiveRequest struct {
+type activeProfileRequest struct {
 	Name string `json:"name"`
 }
 
@@ -332,6 +429,11 @@ type openAIListResponse struct {
 	Profiles []OpenAIConfig `json:"profiles"`
 }
 
+type searchListResponse struct {
+	Active   string         `json:"active"`
+	Profiles []SearchConfig `json:"profiles"`
+}
+
 func NewOpenAIState(configs []OpenAIConfig) (*OpenAIState, error) {
 	state := &OpenAIState{
 		profiles: make(map[string]*OpenAIProfile, len(configs)),
@@ -433,11 +535,95 @@ func publicOpenAIConfig(profile *OpenAIProfile, active bool) OpenAIConfig {
 	return config
 }
 
+type SearchState struct {
+	mu         sync.RWMutex
+	profiles   map[string]SearchConfig
+	order      []string
+	activeName string
+}
+
+func NewSearchState(configs []SearchConfig) (*SearchState, error) {
+	state := &SearchState{
+		profiles: make(map[string]SearchConfig, len(configs)),
+		order:    make([]string, 0, len(configs)),
+	}
+	for _, config := range configs {
+		if strings.TrimSpace(config.Name) == "" {
+			return nil, errors.New("search.name 不能为空")
+		}
+		if strings.TrimSpace(config.Provider) == "" {
+			return nil, fmt.Errorf("search.%s.provider 未配置", config.Name)
+		}
+		if strings.TrimSpace(config.BaseURL) == "" {
+			return nil, fmt.Errorf("search.%s.base_url 未配置", config.Name)
+		}
+		if config.Timeout <= 0 {
+			return nil, fmt.Errorf("search.%s.timeout 必须大于 0", config.Name)
+		}
+		if _, ok := state.profiles[config.Name]; ok {
+			return nil, fmt.Errorf("search 配置名称重复: %s", config.Name)
+		}
+		state.profiles[config.Name] = config
+		state.order = append(state.order, config.Name)
+		if config.Active && state.activeName == "" {
+			state.activeName = config.Name
+		}
+	}
+	if len(state.order) == 0 {
+		return nil, errors.New("search 配置不能为空")
+	}
+	if state.activeName == "" {
+		state.activeName = state.order[0]
+	}
+	return state, nil
+}
+
+func (s *SearchState) ActiveProfile() SearchConfig {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	return s.profiles[s.activeName]
+}
+
+func (s *SearchState) SwitchActive(name string) (SearchConfig, error) {
+	name = strings.TrimSpace(name)
+	if name == "" {
+		return SearchConfig{}, errors.New("搜索配置名称不能为空")
+	}
+	s.mu.Lock()
+	defer s.mu.Unlock()
+	profile, ok := s.profiles[name]
+	if !ok {
+		return SearchConfig{}, fmt.Errorf("搜索配置不存在: %s", name)
+	}
+	s.activeName = name
+	return profile, nil
+}
+
+func (s *SearchState) ListProfiles() searchListResponse {
+	s.mu.RLock()
+	defer s.mu.RUnlock()
+	profiles := make([]SearchConfig, 0, len(s.order))
+	for _, name := range s.order {
+		profile := s.profiles[name]
+		profile.APIKey = ""
+		profile.Active = name == s.activeName
+		profiles = append(profiles, profile)
+	}
+	return searchListResponse{Active: s.activeName, Profiles: profiles}
+}
+
+func publicSearchConfig(config SearchConfig, active bool) SearchConfig {
+	config.APIKey = ""
+	config.Active = active
+	return config
+}
+
 // ─── 全局变量 ─────────────────────────────────────────────
 
 var (
 	cfg         *Config
 	aiState     *OpenAIState
+	searchState *SearchState
 	store       *ConvStore
 )
 
@@ -457,7 +643,7 @@ func listOpenAIHandler(c *gin.Context) {
 }
 
 func switchOpenAIHandler(c *gin.Context) {
-	var req openAIActiveRequest
+	var req activeProfileRequest
 	if err := c.ShouldBindJSON(&req); err != nil {
 		c.JSON(http.StatusBadRequest, gin.H{"error": "请求格式错误: " + err.Error()})
 		return
@@ -473,6 +659,27 @@ func switchOpenAIHandler(c *gin.Context) {
 	})
 }
 
+func listSearchHandler(c *gin.Context) {
+	c.JSON(http.StatusOK, searchState.ListProfiles())
+}
+
+func switchSearchHandler(c *gin.Context) {
+	var req activeProfileRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": "请求格式错误: " + err.Error()})
+		return
+	}
+	profile, err := searchState.SwitchActive(req.Name)
+	if err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+	c.JSON(http.StatusOK, gin.H{
+		"active":  profile.Name,
+		"profile": publicSearchConfig(profile, true),
+	})
+}
+
 func listConversationsHandler(c *gin.Context) {
 	convs, err := store.List()
 	if err != nil {
@@ -619,23 +826,39 @@ type braveSearchResponse struct {
 	} `json:"web"`
 }
 
+type duckDuckGoResponse struct {
+	Abstract       string `json:"Abstract"`
+	AbstractSource string `json:"AbstractSource"`
+	AbstractURL    string `json:"AbstractURL"`
+	Heading        string `json:"Heading"`
+	RelatedTopics  []struct {
+		Text     string `json:"Text"`
+		FirstURL string `json:"FirstURL"`
+		Topics   []struct {
+			Text     string `json:"Text"`
+			FirstURL string `json:"FirstURL"`
+		} `json:"Topics"`
+	} `json:"RelatedTopics"`
+	Infobox struct {
+		Content []struct {
+			Label string `json:"label"`
+			Value string `json:"value"`
+		} `json:"content"`
+	} `json:"Infobox"`
+}
+
 func enrichMessagesWithSearch(ctx context.Context, messages []ChatMessage) ([]ChatMessage, error) {
-	if !cfg.Search.Enabled {
+	searchConfig := searchState.ActiveProfile()
+	if !searchConfig.Enabled {
 		return nil, errors.New("联网搜索未启用，请先在 config.yaml 中配置 search.enabled")
 	}
-	if strings.ToLower(cfg.Search.Provider) != "brave" {
-		return nil, fmt.Errorf("暂不支持搜索服务: %s", cfg.Search.Provider)
-	}
-	if cfg.Search.APIKey == "" {
-		return nil, errors.New("联网搜索未配置 API Key，请设置 search.api_key 或环境变量 BRAVE_SEARCH_API_KEY")
-	}
 
 	query := latestUserQuery(messages)
 	if query == "" {
 		return nil, errors.New("联网搜索需要输入文本问题")
 	}
 
-	results, err := braveWebSearch(ctx, query)
+	results, err := webSearch(ctx, searchConfig, query)
 	if err != nil {
 		return nil, err
 	}
@@ -643,7 +866,7 @@ func enrichMessagesWithSearch(ctx context.Context, messages []ChatMessage) ([]Ch
 		return nil, errors.New("未搜索到相关网页结果")
 	}
 
-	searchContext := buildSearchContext(query, results)
+	searchContext := buildSearchContext(searchConfig, query, results)
 	withSearch := make([]ChatMessage, 0, len(messages)+1)
 	withSearch = append(withSearch, ChatMessage{Role: "system", Content: searchContext, Hidden: true})
 	withSearch = append(withSearch, messages...)
@@ -659,17 +882,128 @@ func latestUserQuery(messages []ChatMessage) string {
 	return ""
 }
 
-func braveWebSearch(ctx context.Context, query string) ([]searchResult, error) {
+func webSearch(ctx context.Context, config SearchConfig, query string) ([]searchResult, error) {
-	searchCtx, cancel := context.WithTimeout(ctx, time.Duration(cfg.Search.Timeout)*time.Second)
+	switch strings.ToLower(config.Provider) {
+	case "duckduckgo", "ddg":
+		return duckDuckGoSearch(ctx, config, query)
+	case "brave":
+		return braveWebSearch(ctx, config, query)
+	default:
+		return nil, fmt.Errorf("暂不支持搜索服务: %s", config.Provider)
+	}
+}
+
+func duckDuckGoSearch(ctx context.Context, config SearchConfig, query string) ([]searchResult, error) {
+	searchCtx, cancel := context.WithTimeout(ctx, time.Duration(config.Timeout)*time.Second)
 	defer cancel()
 
-	u, err := url.Parse(cfg.Search.BaseURL)
+	u, err := url.Parse(config.BaseURL)
 	if err != nil {
 		return nil, fmt.Errorf("搜索服务地址无效: %w", err)
 	}
 	q := u.Query()
 	q.Set("q", query)
-	q.Set("count", fmt.Sprintf("%d", cfg.Search.Count))
+	q.Set("format", "json")
+	q.Set("no_html", "1")
+	q.Set("skip_disambig", "1")
+	u.RawQuery = q.Encode()
+
+	req, err := http.NewRequestWithContext(searchCtx, http.MethodGet, u.String(), nil)
+	if err != nil {
+		return nil, fmt.Errorf("创建搜索请求失败: %w", err)
+	}
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("User-Agent", "aichat/1.0")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("联网搜索失败: %w", err)
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(io.LimitReader(resp.Body, 2*1024*1024))
+	if err != nil {
+		return nil, fmt.Errorf("读取搜索响应失败: %w", err)
+	}
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("搜索服务返回错误 %d: %s", resp.StatusCode, strings.TrimSpace(string(body)))
+	}
+
+	var parsed duckDuckGoResponse
+	if err := json.Unmarshal(body, &parsed); err != nil {
+		return nil, fmt.Errorf("解析搜索响应失败: %w", err)
+	}
+
+	limit := config.Count
+	if limit <= 0 {
+		limit = defaultSearchCount
+	}
+	results := make([]searchResult, 0, limit)
+	if strings.TrimSpace(parsed.Abstract) != "" {
+		title := strings.TrimSpace(parsed.Heading)
+		if title == "" {
+			title = strings.TrimSpace(parsed.AbstractSource)
+		}
+		if title == "" {
+			title = "DuckDuckGo 摘要"
+		}
+		results = append(results, searchResult{Title: title, URL: strings.TrimSpace(parsed.AbstractURL), Description: strings.TrimSpace(parsed.Abstract)})
+	}
+	for _, item := range parsed.Infobox.Content {
+		if len(results) >= limit {
+			break
+		}
+		if strings.TrimSpace(item.Label) == "" || strings.TrimSpace(item.Value) == "" {
+			continue
+		}
+		results = append(results, searchResult{Title: item.Label, Description: item.Value})
+	}
+	appendRelated := func(text, firstURL string) {
+		if len(results) >= limit || strings.TrimSpace(text) == "" {
+			return
+		}
+		title, desc := splitDuckDuckGoText(text)
+		results = append(results, searchResult{Title: title, URL: strings.TrimSpace(firstURL), Description: desc})
+	}
+	for _, topic := range parsed.RelatedTopics {
+		appendRelated(topic.Text, topic.FirstURL)
+		for _, nested := range topic.Topics {
+			appendRelated(nested.Text, nested.FirstURL)
+		}
+		if len(results) >= limit {
+			break
+		}
+	}
+	return results, nil
+}
+
+func splitDuckDuckGoText(text string) (string, string) {
+	text = strings.TrimSpace(text)
+	parts := strings.SplitN(text, " - ", 2)
+	if len(parts) == 2 {
+		return strings.TrimSpace(parts[0]), strings.TrimSpace(parts[1])
+	}
+	runes := []rune(text)
+	if len(runes) > 42 {
+		return string(runes[:42]) + "...", text
+	}
+	return text, text
+}
+
+func braveWebSearch(ctx context.Context, config SearchConfig, query string) ([]searchResult, error) {
+	if config.APIKey == "" {
+		return nil, errors.New("Brave 搜索未配置 API Key，请设置 search.api_key 或环境变量 BRAVE_SEARCH_API_KEY")
+	}
+	searchCtx, cancel := context.WithTimeout(ctx, time.Duration(config.Timeout)*time.Second)
+	defer cancel()
+
+	u, err := url.Parse(config.BaseURL)
+	if err != nil {
+		return nil, fmt.Errorf("搜索服务地址无效: %w", err)
+	}
+	q := u.Query()
+	q.Set("q", query)
+	q.Set("count", fmt.Sprintf("%d", config.Count))
 	q.Set("search_lang", "zh-hans")
 	q.Set("country", "CN")
 	u.RawQuery = q.Encode()
@@ -679,7 +1013,7 @@ func braveWebSearch(ctx context.Context, query string) ([]searchResult, error) {
 		return nil, fmt.Errorf("创建搜索请求失败: %w", err)
 	}
 	req.Header.Set("Accept", "application/json")
-	req.Header.Set("X-Subscription-Token", cfg.Search.APIKey)
+	req.Header.Set("X-Subscription-Token", config.APIKey)
 
 	resp, err := http.DefaultClient.Do(req)
 	if err != nil {
@@ -702,15 +1036,20 @@ func braveWebSearch(ctx context.Context, query string) ([]searchResult, error) {
 	return parsed.Web.Results, nil
 }
 
-func buildSearchContext(query string, results []searchResult) string {
+func buildSearchContext(config SearchConfig, query string, results []searchResult) string {
 	var b strings.Builder
-	fmt.Fprintf(&b, "用户开启了联网搜索。请优先根据以下网页搜索结果回答，并在合适位置标注来源链接。\n")
+	fmt.Fprintf(&b, "用户开启了联网搜索。当前搜索源: %s（%s）。请优先根据以下搜索结果回答，并在合适位置标注来源链接。\n", config.Name, config.Provider)
+	if strings.ToLower(config.Provider) == "duckduckgo" || strings.ToLower(config.Provider) == "ddg" {
+		fmt.Fprintln(&b, "注意：DuckDuckGo 即时答案不是全量网页搜索，结果可能较少。")
+	}
 	fmt.Fprintf(&b, "搜索时间: %s\n", time.Now().Format("2006-01-02 15:04:05"))
 	fmt.Fprintf(&b, "搜索词: %s\n\n", query)
 	fmt.Fprintln(&b, "搜索结果:")
 	for i, r := range results {
 		fmt.Fprintf(&b, "%d. 标题: %s\n", i+1, strings.TrimSpace(r.Title))
+		if strings.TrimSpace(r.URL) != "" {
 			fmt.Fprintf(&b, "   链接: %s\n", strings.TrimSpace(r.URL))
+		}
 		if strings.TrimSpace(r.Description) != "" {
 			fmt.Fprintf(&b, "   摘要: %s\n", strings.TrimSpace(r.Description))
 		}
@@ -1019,6 +1358,11 @@ func main() {
 		fmt.Fprintln(os.Stderr, "OpenAI 配置初始化失败:", err)
 		os.Exit(1)
 	}
+	searchState, err = NewSearchState(cfg.Search)
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "搜索配置初始化失败:", err)
+		os.Exit(1)
+	}
 	store = NewConvStore("conversations")
 
 	// Gin 路由
@@ -1030,6 +1374,8 @@ func main() {
 	r.POST("/api/chat", chatHandler)
 	r.GET("/api/openai", listOpenAIHandler)
 	r.POST("/api/openai/active", switchOpenAIHandler)
+	r.GET("/api/search", listSearchHandler)
+	r.POST("/api/search/active", switchSearchHandler)
 	r.GET("/api/conversations", listConversationsHandler)
 	r.POST("/api/conversations", createConversationHandler)
 	r.GET("/api/conversations/:id", getConversationHandler)

templates/chat.html

@@ -144,12 +144,12 @@
       padding: 3px 10px;
       border-radius: 20px;
     }
-    header .model-select {
+    header .profile-select {
       max-width: 260px;
       cursor: pointer;
       outline: none;
     }
-    header .model-select:disabled {
+    header .profile-select:disabled {
       opacity: .65;
       cursor: not-allowed;
     }
@@ -475,9 +475,10 @@
     {{ .Title }}
   </div>
   <div class="header-actions">
-    <select id="modelSelect" class="model-badge model-select" title="切换 OpenAI 配置">
+    <select id="modelSelect" class="model-badge profile-select" title="切换 OpenAI 配置">
       <option value="{{ .OpenAIName }}">{{ .Model }}</option>
     </select>
+    <select id="searchSelect" class="model-badge profile-select" title="切换搜索源"></select>
     <button id="btnSearch" title="开启后，本轮提问会先联网搜索">联网搜索：关</button>
     <button id="btnPreset" title="设置预先提示词">预设</button>
     <button id="btnClear" title="开始新对话">新对话</button>
@@ -544,6 +545,8 @@ let pending  = false;
 let webSearchEnabled = false;
 let openAIProfiles = [];
 let activeOpenAIName = '{{ .OpenAIName }}';
+let searchProfiles = [];
+let activeSearchName = '';
 let imageB64 = '';   // 当前待发送图片的 data URI
 let imageName = '';
 
@@ -556,6 +559,7 @@ const btnClear  = document.getElementById('btnClear');
 const btnPreset = document.getElementById('btnPreset');
 const btnSearch = document.getElementById('btnSearch');
 const modelSelect = document.getElementById('modelSelect');
+const searchSelect = document.getElementById('searchSelect');
 const btnNewChat = document.getElementById('btnNewChat');
 const convList = document.getElementById('convList');
 const presetModal = document.getElementById('presetModal');
@@ -630,6 +634,7 @@ function setInputDisabled(disabled) {
   fileInput.disabled = disabled;
   btnSearch.disabled = disabled;
   modelSelect.disabled = disabled || openAIProfiles.length <= 1;
+  searchSelect.disabled = disabled || searchProfiles.length <= 1;
 }
 
 function updateSearchButton() {
@@ -658,6 +663,27 @@ async function loadOpenAIProfiles() {
   modelSelect.disabled = pending || openAIProfiles.length <= 1;
 }
 
+async function loadSearchProfiles() {
+  const res = await fetch('/api/search');
+  if (!res.ok) {
+    const err = await res.json().catch(() => ({ error: '加载搜索配置失败' }));
+    throw new Error(err.error || '加载搜索配置失败');
+  }
+  const data = await res.json();
+  searchProfiles = Array.isArray(data.profiles) ? data.profiles : [];
+  activeSearchName = data.active || '';
+
+  searchSelect.innerHTML = '';
+  for (const profile of searchProfiles) {
+    const opt = document.createElement('option');
+    opt.value = profile.name;
+    opt.textContent = `${profile.name} · ${profile.provider}`;
+    opt.selected = profile.name === activeSearchName;
+    searchSelect.appendChild(opt);
+  }
+  searchSelect.disabled = pending || searchProfiles.length <= 1;
+}
+
 // ── 对话列表 ──────────────────────────────────────────────
 async function loadConversationList() {
   try {
@@ -1063,6 +1089,31 @@ modelSelect.addEventListener('change', async () => {
     alert(e.message);
   }
 });
+searchSelect.addEventListener('change', async () => {
+  if (pending) {
+    searchSelect.value = activeSearchName;
+    return;
+  }
+  const nextName = searchSelect.value;
+  const prevName = activeSearchName;
+  try {
+    const res = await fetch('/api/search/active', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ name: nextName }),
+    });
+    if (!res.ok) {
+      const err = await res.json().catch(() => ({ error: '切换搜索源失败' }));
+      throw new Error(err.error || '切换搜索源失败');
+    }
+    const data = await res.json();
+    activeSearchName = data.active;
+    searchSelect.value = activeSearchName;
+  } catch (e) {
+    searchSelect.value = prevName;
+    alert(e.message);
+  }
+});
 btnNewChat.addEventListener('click', newConversation);
 btnClear.addEventListener('click', newConversation);
 btnPreset.addEventListener('click', openPresetModal);
@@ -1083,6 +1134,7 @@ presetModal.addEventListener('click', e => {
 // 自动聚焦 & 初始化
 updateSearchButton();
 loadOpenAIProfiles().catch(e => alert(e.message));
+loadSearchProfiles().catch(e => alert(e.message));
 loadConversationList();
 inputBox.focus();
 </script>