init: initial commit

internal/handler/library.go

@@ -0,0 +1,94 @@
+package handler
+
+import (
+	"context"
+
+	"AI-Expert-Sidebar/internal/database"
+	"AI-Expert-Sidebar/internal/service"
+
+	"github.com/wailsapp/wails/v2/pkg/runtime"
+)
+
+// LibraryHandler exposes library management and CSV import via Wails bindings.
+type LibraryHandler struct{ ctx context.Context }
+
+func NewLibraryHandler() *LibraryHandler                 { return &LibraryHandler{} }
+func (h *LibraryHandler) SetContext(ctx context.Context) { h.ctx = ctx }
+
+// ListLibraries returns all registered knowledge libraries.
+func (h *LibraryHandler) ListLibraries() []LibraryInfo {
+	libs, err := service.ListLibraries()
+	if err != nil {
+		return nil
+	}
+	out := make([]LibraryInfo, len(libs))
+	for i, l := range libs {
+		out[i] = LibraryInfo{
+			ID: l.ID, Name: l.Name, Description: l.Description,
+			EntryCount: l.EntryCount, IsActive: l.Name == database.GetActiveLibName(),
+		}
+	}
+	return out
+}
+
+// GetActiveLibrary returns the name of the currently active library.
+func (h *LibraryHandler) GetActiveLibrary() string {
+	return database.GetActiveLibName()
+}
+
+// CreateLibrary registers a new knowledge library.
+func (h *LibraryHandler) CreateLibrary(name, description string) string {
+	if name == "" {
+		return "名称不能为空"
+	}
+	lib, err := service.CreateLibrary(name, description)
+	if err != nil {
+		return err.Error()
+	}
+	// Auto-switch to newly created library
+	service.SwitchLibrary(lib.Name) //nolint
+	return ""
+}
+
+// SwitchLibrary makes the named library active.
+func (h *LibraryHandler) SwitchLibrary(name string) string {
+	if err := service.SwitchLibrary(name); err != nil {
+		return err.Error()
+	}
+	return ""
+}
+
+// DeleteLibrary removes a library from the registry (file is kept).
+func (h *LibraryHandler) DeleteLibrary(name string) string {
+	if name == database.GetActiveLibName() {
+		return "不能删除当前使用中的知识库，请先切换到其他库"
+	}
+	if err := service.DeleteLibrary(name, false); err != nil {
+		return err.Error()
+	}
+	return ""
+}
+
+// ImportCSV opens a native file dialog then imports CSV data into the active library.
+func (h *LibraryHandler) ImportCSV() service.ImportResult {
+	filePath, err := runtime.OpenFileDialog(h.ctx, runtime.OpenDialogOptions{
+		Title: "选择 CSV 文件",
+		Filters: []runtime.FileFilter{
+			{DisplayName: "CSV 文件", Pattern: "*.csv"},
+			{DisplayName: "所有文件", Pattern: "*"},
+		},
+	})
+	if err != nil || filePath == "" {
+		return service.ImportResult{Error: "已取消"}
+	}
+	return service.ImportCSV(filePath)
+}
+
+// LibraryInfo is the frontend-facing representation of a library.
+type LibraryInfo struct {
+	ID          uint   `json:"id"`
+	Name        string `json:"name"`
+	Description string `json:"description"`
+	EntryCount  int    `json:"entry_count"`
+	IsActive    bool   `json:"is_active"`
+}