初始化项目框架，完成部分接口开发

internal/logic/book/book.go

@@ -0,0 +1,138 @@
+package book
+
+import (
+	"context"
+	"server/internal/dao"
+	"server/internal/model"
+	"server/internal/model/do"
+	"server/internal/service"
+	"server/utility/ecode"
+)
+
+type sBook struct{}
+
+func New() service.IBook {
+	return &sBook{}
+}
+
+func init() {
+	service.RegisterBook(New())
+}
+
+// List retrieves a paginated list of books
+func (s *sBook) List(ctx context.Context, in *model.BookListIn) (out *model.BookListOut, err error) {
+	out = &model.BookListOut{}
+	m := dao.Books.Ctx(ctx)
+	if in.Title != "" {
+		m = m.Where(dao.Books.Columns().Title+" like ?", "%"+in.Title+"%")
+	}
+	if in.CategoryId != 0 {
+		m = m.Where(dao.Books.Columns().CategoryId, in.CategoryId)
+	}
+	if in.AuthorId != 0 {
+		m = m.Where(dao.Books.Columns().AuthorId, in.AuthorId)
+	}
+	if in.Status != 0 {
+		m = m.Where(dao.Books.Columns().Status, in.Status)
+	}
+	if in.IsRecommended != 0 {
+		m = m.Where(dao.Books.Columns().IsRecommended, in.IsRecommended)
+	}
+	if err = m.Page(in.Page, in.Size).ScanAndCount(&out.List, &out.Total, false); err != nil {
+		return
+	}
+	return
+}
+
+func (s *sBook) Create(ctx context.Context, in *model.BookAddIn) (out *model.BookCRUDOut, err error) {
+	exist, err := dao.Books.Ctx(ctx).
+		Where(dao.Books.Columns().Title, in.Title).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_query_failed")
+	}
+	if exist {
+		return nil, ecode.Params.Sub("book_exists")
+	}
+
+	if _, err := dao.Books.Ctx(ctx).Data(do.Books{
+		AuthorId:      in.AuthorId,
+		CategoryId:    in.CategoryId,
+		Title:         in.Title,
+		CoverUrl:      in.CoverUrl,
+		Description:   in.Description,
+		Status:        in.Status,
+		Tags:          in.Tags,
+		IsRecommended: in.IsRecommended,
+	}).Insert(); err != nil {
+		return nil, ecode.Fail.Sub("book_create_failed")
+	}
+
+	return &model.BookCRUDOut{
+		Success: true,
+	}, nil
+}
+
+func (s *sBook) Update(ctx context.Context, in *model.BookEditIn) (out *model.BookCRUDOut, err error) {
+	exist, err := dao.Books.Ctx(ctx).
+		WherePri(in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_query_failed")
+	}
+	if !exist {
+		return nil, ecode.NotFound.Sub("book_not_found")
+	}
+
+	exist, err = dao.Books.Ctx(ctx).
+		Where(dao.Books.Columns().Title, in.Title).
+		Where("id != ?", in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_query_failed")
+	}
+	if exist {
+		return nil, ecode.Params.Sub("book_exists")
+	}
+
+	_, err = dao.Books.Ctx(ctx).
+		WherePri(in.Id).
+		Data(do.Books{
+			AuthorId:      in.AuthorId,
+			CategoryId:    in.CategoryId,
+			Title:         in.Title,
+			CoverUrl:      in.CoverUrl,
+			Description:   in.Description,
+			Status:        in.Status,
+			Tags:          in.Tags,
+			IsRecommended: in.IsRecommended,
+		}).Update()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_update_failed")
+	}
+
+	return &model.BookCRUDOut{
+		Success: true,
+	}, nil
+}
+
+func (s *sBook) Delete(ctx context.Context, in *model.BookDelIn) (out *model.BookCRUDOut, err error) {
+	exist, err := dao.Books.Ctx(ctx).
+		WherePri(in.Id).
+		Exist()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_query_failed")
+	}
+	if !exist {
+		return nil, ecode.NotFound.Sub("book_not_found")
+	}
+
+	_, err = dao.Books.Ctx(ctx).WherePri(in.Id).Delete()
+	if err != nil {
+		return nil, ecode.Fail.Sub("book_delete_failed")
+	}
+
+	return &model.BookCRUDOut{
+		Success: true,
+	}, nil
+}