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topic.go
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topic.go
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// SPDX-License-Identifier: AGPL-3.0-only
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>
package handler
import (
"context"
"errors"
"github.com/gofiber/fiber/v2"
"github.com/bangumi/server/internal/domain"
"github.com/bangumi/server/internal/model"
"github.com/bangumi/server/internal/pkg/errgo"
"github.com/bangumi/server/internal/pkg/generic/gmap"
"github.com/bangumi/server/internal/pkg/generic/slice"
"github.com/bangumi/server/internal/web/req"
"github.com/bangumi/server/internal/web/res"
)
func (h Handler) listTopics(c *fiber.Ctx, topicType domain.TopicType, id uint32) error {
u := h.GetHTTPAccessor(c)
page, err := req.GetPageQuery(c, req.DefaultPageLimit, req.DefaultMaxPageLimit)
if err != nil {
return err
}
topics, count, err := h.ctrl.ListTopics(c.UserContext(), u.Auth, topicType, id, page.Limit, page.Offset)
if err != nil {
return errgo.Wrap(err, "ctrl.ListTopics")
}
if count == 0 {
return res.JSON(c, res.Paged{
Data: res.EmptySlice(),
Total: count,
Limit: page.Limit,
Offset: page.Offset,
})
}
if err = page.Check(count); err != nil {
return err
}
userIDs := slice.Map(topics, func(item model.Topic) model.UserID {
return item.CreatorID
})
userMap, err := h.ctrl.GetUsersByIDs(c.UserContext(), slice.Unique(userIDs))
if err != nil {
return errgo.Wrap(err, "user.GetByIDs")
}
var data = make([]res.PrivateTopic, len(topics))
for i, topic := range topics {
data[i] = res.PrivateTopic{
ID: topic.ID,
Title: topic.Title,
CreatedAt: topic.CreatedAt,
UpdatedAt: topic.UpdatedAt,
Creator: res.ConvertModelUser(userMap[topic.CreatorID]),
ReplyCount: topic.Replies,
}
}
return res.JSON(c, res.Paged{
Data: data,
Total: count,
Limit: page.Limit,
Offset: page.Offset,
})
}
func (h Handler) getResTopicWithComments(
c *fiber.Ctx, topicType domain.TopicType, topicID model.TopicID,
) (*res.PrivateTopicDetail, error) {
a := h.GetHTTPAccessor(c)
t, err := h.ctrl.GetTopic(context.TODO(), a.Auth, topicType, topicID, 0, 0)
if err != nil {
if errors.Is(err, domain.ErrNotFound) {
return nil, res.ErrNotFound
}
return nil, errgo.Wrap(err, "failed to get topic")
}
var userIDs = make(map[model.UserID]struct{}, len(t.Replies))
for _, reply := range t.Replies {
userIDs[reply.CreatorID] = struct{}{}
for _, comment := range reply.SubComments {
userIDs[comment.CreatorID] = struct{}{}
}
}
userIDs[t.CreatorID] = struct{}{}
users, err := h.ctrl.GetUsersByIDs(context.TODO(), gmap.Keys(userIDs))
if err != nil {
return nil, errgo.Wrap(err, "ctrl.GetUsersByIDs")
}
var friends map[model.UserID]domain.FriendItem
if a.Login {
friends, err = h.ctrl.GetFriends(context.TODO(), a.ID)
if err != nil {
return nil, errgo.Wrap(err, "userRepo.GetFriends")
}
}
return &res.PrivateTopicDetail{
ParentID: t.ParentID,
ID: t.ID,
Title: t.Title,
IsFriend: gmap.Has(friends, t.CreatorID),
CreatedAt: t.CreatedAt,
UpdatedAt: t.UpdatedAt,
Creator: res.ConvertModelUser(users[t.CreatorID]),
State: t.State,
Comments: fromModelComments(t.Replies, users, friends),
Text: t.Content,
}, nil
}
func fromModelComments(
replies []model.Comment,
users map[model.UserID]model.User,
friends map[model.UserID]domain.FriendItem,
) []res.PrivateComment {
var comments = make([]res.PrivateComment, 0, len(replies))
for _, reply := range replies {
var subComments = make([]res.PrivateSubComment, 0, len(reply.SubComments))
for _, comment := range reply.SubComments {
_, f := friends[comment.CreatorID]
subComments = append(subComments, res.PrivateSubComment{
CreatedAt: comment.CreatedAt,
Text: comment.Content,
Creator: res.ConvertModelUser(users[comment.CreatorID]),
IsFriend: f,
State: comment.State,
ID: comment.ID,
})
}
_, f := friends[reply.CreatorID]
comments = append(comments, res.PrivateComment{
CreatedAt: reply.CreatedAt,
Text: reply.Content,
Creator: res.ConvertModelUser(users[reply.CreatorID]),
Replies: subComments,
ID: reply.ID,
IsFriend: f,
State: reply.State,
})
}
return comments
}