init: initial commit

internal/handler/settings.go

@@ -0,0 +1,45 @@
+package handler
+
+import (
+	"context"
+
+	"AI-Expert-Sidebar/internal/service"
+)
+
+// SettingsHandler exposes AI settings CRUD via Wails bindings.
+type SettingsHandler struct{ ctx context.Context }
+
+func NewSettingsHandler() *SettingsHandler                { return &SettingsHandler{} }
+func (s *SettingsHandler) SetContext(ctx context.Context) { s.ctx = ctx }
+
+// GetSettings returns the current local AI settings.
+func (s *SettingsHandler) GetSettings() *service.SettingsDTO {
+	return service.GetSettings()
+}
+
+// SaveSettings persists AI config to local settings.db.
+// Returns empty string on success, error message on failure.
+func (s *SettingsHandler) SaveSettings(dto service.SettingsDTO) string {
+	if err := service.SaveSettings(dto); err != nil {
+		return err.Error()
+	}
+	return ""
+}
+
+// GetProviders returns built-in AI provider presets for the frontend dropdown.
+func (s *SettingsHandler) GetProviders() []ProviderPreset {
+	return []ProviderPreset{
+		{ID: "deepseek", Label: "DeepSeek", BaseURL: "https://api.deepseek.com/chat/completions", DefaultModel: "deepseek-chat"},
+		{ID: "openai", Label: "OpenAI", BaseURL: "https://api.openai.com/v1/chat/completions", DefaultModel: "gpt-4o"},
+		{ID: "grok", Label: "Grok (xAI)", BaseURL: "https://api.x.ai/v1/chat/completions", DefaultModel: "grok-3"},
+		{ID: "custom", Label: "自定义", BaseURL: "", DefaultModel: ""},
+	}
+}
+
+// ProviderPreset describes a known AI provider with preset URL and model.
+type ProviderPreset struct {
+	ID           string `json:"id"`
+	Label        string `json:"label"`
+	BaseURL      string `json:"base_url"`
+	DefaultModel string `json:"default_model"`
+}