/
index.go
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/
index.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 index
import (
"context"
"errors"
"net/http"
"time"
"github.com/labstack/echo/v4"
"github.com/trim21/errgo"
"go.uber.org/zap"
"github.com/bangumi/server/domain/gerr"
"github.com/bangumi/server/internal/model"
"github.com/bangumi/server/web/accessor"
"github.com/bangumi/server/web/internal/cachekey"
"github.com/bangumi/server/web/req"
"github.com/bangumi/server/web/res"
)
func (h Handler) GetIndex(c echo.Context) error {
user := accessor.GetFromCtx(c)
id, err := req.ParseID(c.Param("id"))
if err != nil {
return err
}
r, ok, err := h.getIndexWithCache(c.Request().Context(), id)
if err != nil {
return errgo.Wrap(err, "failed to get index")
}
if !ok || r.NSFW && !user.AllowNSFW() {
return res.NotFound("index not found")
}
return c.JSON(http.StatusOK, r)
}
func (h Handler) getIndexWithCache(c context.Context, id uint32) (res.Index, bool, error) {
var key = cachekey.Index(id)
var r res.Index
ok, err := h.cache.Get(c, key, &r)
if err != nil {
return r, ok, errgo.Wrap(err, "cache.Get")
}
if ok {
return r, ok, nil
}
i, err := h.i.Get(c, id)
if err != nil {
if errors.Is(err, gerr.ErrNotFound) {
return res.Index{}, false, nil
}
return res.Index{}, false, errgo.Wrap(err, "Index.Get")
}
u, err := h.u.GetByID(c, i.CreatorID)
if err != nil {
if errors.Is(err, gerr.ErrNotFound) {
h.log.Error("index missing creator", zap.Uint32("index_id", id), zap.Uint32("creator", i.CreatorID))
}
return res.Index{}, false, errgo.Wrap(err, "failed to get creator: user.GetByID")
}
r = res.IndexModelToResponse(&i, u)
_ = h.cache.Set(c, key, r, time.Hour)
return r, true, nil
}
func (h Handler) GetIndexSubjects(c echo.Context) error {
user := accessor.GetFromCtx(c)
id, err := req.ParseID(c.Param("id"))
if err != nil {
return err
}
subjectType, err := req.ParseSubjectType(c.QueryParam("type"))
if err != nil {
return errgo.Wrap(err, "invalid query `type` for subject type")
}
page, err := req.GetPageQuery(c, req.DefaultPageLimit, req.DefaultMaxPageLimit)
if err != nil {
return err
}
r, ok, err := h.getIndexWithCache(c.Request().Context(), id)
if err != nil {
return errgo.Wrap(err, "failed to get index")
}
if !ok || (r.NSFW && !user.AllowNSFW()) {
return res.ErrNotFound
}
return h.getIndexSubjects(c, id, subjectType, page)
}
func (h Handler) getIndexSubjects(
c echo.Context, id model.IndexID, subjectType uint8, page req.PageQuery,
) error {
count, err := h.i.CountSubjects(c.Request().Context(), id, subjectType)
if err != nil {
return errgo.Wrap(err, "Index.CountSubjects")
}
if count == 0 {
return c.JSON(http.StatusOK, res.Paged{
Data: []int{},
Total: 0,
Limit: page.Limit,
Offset: page.Offset,
})
}
if err = page.Check(count); err != nil {
return err
}
subjects, err := h.i.ListSubjects(c.Request().Context(), id, subjectType, page.Limit, page.Offset)
if err != nil {
return errgo.Wrap(err, "Index.ListSubjects")
}
var data = make([]res.IndexSubjectV0, len(subjects))
for i, s := range subjects {
data[i] = indexSubjectToResp(s)
}
return c.JSON(http.StatusOK, res.Paged{
Data: data,
Total: count,
Limit: page.Limit,
Offset: page.Offset,
})
}
func (h Handler) NewIndex(c echo.Context) error {
var reqData req.IndexBasicInfo
if err := c.Echo().JSONSerializer.Deserialize(c, &reqData); err != nil {
return res.JSONError(c, err)
}
if err := h.ensureValidStrings(reqData.Description, reqData.Title); err != nil {
return err
}
accessor := accessor.GetFromCtx(c)
now := time.Now()
i := &model.Index{
ID: 0,
CreatedAt: now,
UpdatedAt: now,
Title: reqData.Title,
Description: reqData.Description,
CreatorID: accessor.ID,
Total: 0,
Comments: 0,
Collects: 0,
NSFW: false,
}
ctx := c.Request().Context()
if err := h.i.New(ctx, i); err != nil {
return errgo.Wrap(err, "failed to create a new index")
}
u, err := h.u.GetByID(ctx, i.CreatorID)
if err != nil {
return errgo.Wrap(err, "failed to get user info")
}
resp := res.IndexModelToResponse(i, u)
return c.JSON(http.StatusOK, resp)
}
// 确保目录存在, 并且当前请求的用户持有权限.
func (h Handler) ensureIndexPermission(c echo.Context, indexID uint32) (*model.Index, error) {
accessor := accessor.GetFromCtx(c)
index, err := h.i.Get(c.Request().Context(), indexID)
if err != nil {
if errors.Is(err, gerr.ErrNotFound) {
return nil, res.NotFound("index not found")
}
return nil, res.InternalError(c, err, "failed to get index")
}
if index.CreatorID != accessor.ID {
return nil, res.Unauthorized("you are not the creator of this index")
}
return &index, nil
}
func (h Handler) UpdateIndex(c echo.Context) error {
indexID, err := req.ParseID(c.Param("id"))
if err != nil {
return err
}
var reqData req.IndexBasicInfo
if err = c.Echo().JSONSerializer.Deserialize(c, &reqData); err != nil {
return res.JSONError(c, err)
}
if reqData.Title == "" && reqData.Description == "" {
return res.BadRequest("request data is empty")
}
if err = h.ensureValidStrings(reqData.Description, reqData.Title); err != nil {
return err
}
index, err := h.ensureIndexPermission(c, indexID)
if err != nil {
return err
}
if err = h.i.Update(c.Request().Context(), index.ID, reqData.Title, reqData.Description); err != nil {
return errgo.Wrap(err, "update index failed")
}
h.invalidateIndexCache(c.Request().Context(), index.ID)
return nil
}