第一版完成
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355
internal/service/news.go
Normal file
355
internal/service/news.go
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@@ -0,0 +1,355 @@
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package service
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import (
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"context"
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"cms-api/internal/dao"
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"cms-api/internal/model"
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"strings"
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"github.com/gogf/gf/v2/errors/gerror"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/os/gtime"
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)
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type sNews struct{}
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func News() *sNews {
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return &sNews{}
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}
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// GetById 根据ID获取新闻信息
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func (s *sNews) GetById(ctx context.Context, id int) (*model.News, error) {
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news, err := dao.News.GetById(ctx, id)
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if err != nil {
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return nil, err
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}
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if news != nil {
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// 增加浏览次数
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go func() {
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dao.News.IncrementViewCount(context.Background(), id)
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}()
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}
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return news, nil
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}
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// GetBySlug 根据URL别名获取新闻
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func (s *sNews) GetBySlug(ctx context.Context, slug string) (*model.News, error) {
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news, err := dao.News.GetBySlug(ctx, slug)
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if err != nil {
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return nil, err
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}
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if news != nil {
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// 增加浏览次数
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go func() {
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dao.News.IncrementViewCount(context.Background(), news.Id)
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}()
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}
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return news, nil
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}
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// List 获取新闻列表
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func (s *sNews) List(ctx context.Context, req *model.NewsListRequest) (*model.PageResponse, error) {
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var (
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page = req.Page
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pageSize = req.PageSize
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)
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if page <= 0 {
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page = 1
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}
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if pageSize <= 0 {
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pageSize = 10
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}
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// 设置分页参数
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req.Page = page
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req.PageSize = pageSize
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// 获取列表
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newsList, total, err := dao.News.List(ctx, req)
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if err != nil {
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return nil, err
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}
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return &model.PageResponse{
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List: newsList,
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Total: total,
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Page: page,
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PageSize: pageSize,
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TotalPages: (total + pageSize - 1) / pageSize,
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}, nil
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}
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// Create 创建新闻
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func (s *sNews) Create(ctx context.Context, req *model.CreateNewsRequest) error {
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// 检查URL别名是否存在
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if req.Slug != "" {
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existNews, err := dao.News.GetBySlug(ctx, req.Slug)
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if err != nil {
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return err
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}
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if existNews != nil {
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return gerror.New("URL别名已存在")
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}
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} else {
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// 如果没有提供slug，则根据标题生成
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req.Slug = s.generateSlug(req.Title)
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}
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// 创建新闻
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news := &model.News{
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Title: req.Title,
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Slug: req.Slug,
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Summary: req.Summary,
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Content: req.Content,
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CoverImage: req.CoverImage,
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Category: req.Category,
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Source: req.Source,
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Author: req.Author,
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IsPublished: req.IsPublished,
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IsFeatured: req.IsFeatured,
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IsTop: req.IsTop,
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CreatedAt: gtime.Now(),
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UpdatedAt: gtime.Now(),
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}
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if req.IsPublished == 1 {
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news.PublishedAt = gtime.Now()
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}
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_, err := dao.News.Create(ctx, news)
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return err
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}
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// Update 更新新闻
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func (s *sNews) Update(ctx context.Context, id int, req *model.UpdateNewsRequest) error {
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// 检查新闻是否存在
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news, err := s.GetById(ctx, id)
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if err != nil {
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return err
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}
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if news == nil {
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return gerror.New("新闻不存在")
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}
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// 检查URL别名是否被其他新闻使用
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if req.Slug != "" && req.Slug != news.Slug {
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existNews, err := dao.News.GetBySlug(ctx, req.Slug)
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if err != nil {
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return err
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}
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if existNews != nil && existNews.Id != id {
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return gerror.New("URL别名已被使用")
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}
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}
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// 更新新闻
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updateData := g.Map{
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"title": req.Title,
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"slug": req.Slug,
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"summary": req.Summary,
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"content": req.Content,
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"cover_image": req.CoverImage,
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"category": req.Category,
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"source": req.Source,
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"author": req.Author,
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"is_published": req.IsPublished,
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"is_featured": req.IsFeatured,
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"is_top": req.IsTop,
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"updated_at": gtime.Now(),
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}
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// 如果从草稿变为发布状态，设置发布时间
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if req.IsPublished == 1 && news.IsPublished == 0 {
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updateData["published_at"] = gtime.Now()
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}
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return dao.News.Update(ctx, id, updateData)
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}
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// Delete 删除新闻
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func (s *sNews) Delete(ctx context.Context, id int) error {
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// 检查新闻是否存在
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news, err := s.GetById(ctx, id)
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if err != nil {
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return err
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}
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if news == nil {
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return gerror.New("新闻不存在")
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}
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return dao.News.Delete(ctx, id)
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}
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// UpdateStatus 更新新闻状态
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func (s *sNews) UpdateStatus(ctx context.Context, id int, isPublished int) error {
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// 检查新闻是否存在
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news, err := s.GetById(ctx, id)
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if err != nil {
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return err
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}
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if news == nil {
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return gerror.New("新闻不存在")
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}
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updateData := g.Map{
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"is_published": isPublished,
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"updated_at": gtime.Now(),
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}
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// 如果是发布状态，设置发布时间
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if isPublished == 1 && news.IsPublished == 0 {
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updateData["published_at"] = gtime.Now()
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}
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return dao.News.Update(ctx, id, updateData)
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}
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// SetFeatured 设置推荐状态
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func (s *sNews) SetFeatured(ctx context.Context, id int, isFeatured int) error {
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// 检查新闻是否存在
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news, err := s.GetById(ctx, id)
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if err != nil {
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return err
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}
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if news == nil {
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return gerror.New("新闻不存在")
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}
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return dao.News.Update(ctx, id, g.Map{
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"is_featured": isFeatured,
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"updated_at": gtime.Now(),
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})
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}
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// SetTop 设置置顶状态
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func (s *sNews) SetTop(ctx context.Context, id int, isTop int) error {
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// 检查新闻是否存在
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news, err := s.GetById(ctx, id)
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if err != nil {
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return err
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}
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if news == nil {
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return gerror.New("新闻不存在")
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}
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return dao.News.Update(ctx, id, g.Map{
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"is_top": isTop,
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"updated_at": gtime.Now(),
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})
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}
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// GetStats 获取新闻统计信息
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func (s *sNews) GetStats(ctx context.Context) (map[string]interface{}, error) {
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// 获取总新闻数
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totalCount, err := dao.News.GetCount(ctx)
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if err != nil {
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return nil, err
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}
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// 获取已发布新闻数
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publishedCount, err := dao.News.GetPublishedCount(ctx)
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if err != nil {
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return nil, err
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}
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// 获取草稿数
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draftCount := totalCount - publishedCount
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// 获取推荐新闻数
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featuredCount, err := dao.News.GetFeaturedCount(ctx)
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if err != nil {
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return nil, err
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}
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// 获取各分类新闻数
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companyNewsCount, err := dao.News.GetCountByCategory(ctx, "company_news")
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if err != nil {
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return nil, err
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}
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industryNewsCount, err := dao.News.GetCountByCategory(ctx, "industry_news")
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if err != nil {
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return nil, err
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}
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return map[string]interface{}{
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"total_count": totalCount,
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"published_count": publishedCount,
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"draft_count": draftCount,
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"featured_count": featuredCount,
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"company_news_count": companyNewsCount,
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"industry_news_count": industryNewsCount,
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}, nil
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}
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// GetFeatured 获取推荐新闻
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func (s *sNews) GetFeatured(ctx context.Context, limit int) ([]*model.News, error) {
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if limit <= 0 {
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limit = 5
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}
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return dao.News.GetFeatured(ctx, limit)
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}
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// GetLatest 获取最新新闻
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func (s *sNews) GetLatest(ctx context.Context, limit int) ([]*model.News, error) {
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if limit <= 0 {
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limit = 10
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}
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return dao.News.GetLatest(ctx, limit)
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}
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// GetByCategory 根据分类获取新闻
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func (s *sNews) GetByCategory(ctx context.Context, category string, page, pageSize int) (*model.PageResponse, error) {
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if page <= 0 {
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page = 1
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}
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if pageSize <= 0 {
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pageSize = 10
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}
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newsList, total, err := dao.News.GetByCategory(ctx, category, page, pageSize)
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if err != nil {
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return nil, err
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}
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return &model.PageResponse{
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List: newsList,
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Total: total,
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Page: page,
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PageSize: pageSize,
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TotalPages: (total + pageSize - 1) / pageSize,
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}, nil
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}
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// generateSlug 生成URL别名
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func (s *sNews) generateSlug(title string) string {
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// 简单的slug生成逻辑
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slug := strings.ToLower(title)
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slug = strings.ReplaceAll(slug, " ", "-")
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slug = strings.ReplaceAll(slug, " ", "-") // 全角空格
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return slug
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}
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// Search 搜索新闻
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func (s *sNews) Search(ctx context.Context, keyword string, page, pageSize int) (*model.PageResponse, error) {
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if page <= 0 {
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page = 1
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}
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if pageSize <= 0 {
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pageSize = 10
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}
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newsList, total, err := dao.News.Search(ctx, keyword, page, pageSize)
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if err != nil {
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return nil, err
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}
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return &model.PageResponse{
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List: newsList,
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Total: total,
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Page: page,
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PageSize: pageSize,
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TotalPages: (total + pageSize - 1) / pageSize,
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}, nil
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}
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