mirror of
https://github.com/dnote/dnote
synced 2026-03-15 23:15:50 +01:00
6acc2936e3* Rename handlers to api * Fix imports * Fix test * Abstract * Fix warning * wip * Split session * Pass db * Fix test * Fix test * Remove payment * Fix state * Fix flow * Check password when changing email * Add test methods * Fix timestamp * Document * Remove clutter * Redirect to login * Fix * Fix
304 lines
8 KiB
Go
304 lines
8 KiB
Go
/* Copyright (C) 2019, 2020 Monomax Software Pty Ltd
|
|
*
|
|
* This file is part of Dnote.
|
|
*
|
|
* Dnote 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, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Dnote 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 Dnote. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
package api
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"net/url"
|
|
"sort"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/dnote/dnote/pkg/server/database"
|
|
"github.com/dnote/dnote/pkg/server/handlers"
|
|
"github.com/dnote/dnote/pkg/server/helpers"
|
|
"github.com/dnote/dnote/pkg/server/log"
|
|
"github.com/pkg/errors"
|
|
)
|
|
|
|
// fullSyncBefore is the system-wide timestamp that represents the point in time
|
|
// before which clients must perform a full-sync rather than incremental sync.
|
|
const fullSyncBefore = 0
|
|
|
|
// SyncFragment contains a piece of information about the server's state.
|
|
// It is used to transfer the server's state to the client gradually without having to
|
|
// transfer the whole state at once.
|
|
type SyncFragment struct {
|
|
FragMaxUSN int `json:"frag_max_usn"`
|
|
UserMaxUSN int `json:"user_max_usn"`
|
|
CurrentTime int64 `json:"current_time"`
|
|
Notes []SyncFragNote `json:"notes"`
|
|
Books []SyncFragBook `json:"books"`
|
|
ExpungedNotes []string `json:"expunged_notes"`
|
|
ExpungedBooks []string `json:"expunged_books"`
|
|
}
|
|
|
|
// SyncFragNote represents a note in a sync fragment and contains only the necessary information
|
|
// for the client to sync the note locally
|
|
type SyncFragNote struct {
|
|
UUID string `json:"uuid"`
|
|
BookUUID string `json:"book_uuid"`
|
|
USN int `json:"usn"`
|
|
CreatedAt time.Time `json:"created_at"`
|
|
UpdatedAt time.Time `json:"updated_at"`
|
|
AddedOn int64 `json:"added_on"`
|
|
EditedOn int64 `json:"edited_on"`
|
|
Body string `json:"content"`
|
|
Public bool `json:"public"`
|
|
Deleted bool `json:"deleted"`
|
|
}
|
|
|
|
// NewFragNote presents the given note as a SyncFragNote
|
|
func NewFragNote(note database.Note) SyncFragNote {
|
|
return SyncFragNote{
|
|
UUID: note.UUID,
|
|
USN: note.USN,
|
|
CreatedAt: note.CreatedAt,
|
|
UpdatedAt: note.UpdatedAt,
|
|
AddedOn: note.AddedOn,
|
|
EditedOn: note.EditedOn,
|
|
Body: note.Body,
|
|
Public: note.Public,
|
|
Deleted: note.Deleted,
|
|
BookUUID: note.BookUUID,
|
|
}
|
|
}
|
|
|
|
// SyncFragBook represents a book in a sync fragment and contains only the necessary information
|
|
// for the client to sync the note locally
|
|
type SyncFragBook struct {
|
|
UUID string `json:"uuid"`
|
|
USN int `json:"usn"`
|
|
CreatedAt time.Time `json:"created_at"`
|
|
UpdatedAt time.Time `json:"updated_at"`
|
|
AddedOn int64 `json:"added_on"`
|
|
Label string `json:"label"`
|
|
Deleted bool `json:"deleted"`
|
|
}
|
|
|
|
// NewFragBook presents the given book as a SyncFragBook
|
|
func NewFragBook(book database.Book) SyncFragBook {
|
|
return SyncFragBook{
|
|
UUID: book.UUID,
|
|
USN: book.USN,
|
|
CreatedAt: book.CreatedAt,
|
|
UpdatedAt: book.UpdatedAt,
|
|
AddedOn: book.AddedOn,
|
|
Label: book.Label,
|
|
Deleted: book.Deleted,
|
|
}
|
|
}
|
|
|
|
type usnItem struct {
|
|
usn int
|
|
val interface{}
|
|
}
|
|
|
|
type queryParamError struct {
|
|
key string
|
|
value string
|
|
message string
|
|
}
|
|
|
|
func (e *queryParamError) Error() string {
|
|
return fmt.Sprintf("invalid query param %s=%s. %s", e.key, e.value, e.message)
|
|
}
|
|
|
|
func (a *API) newFragment(userID, userMaxUSN, afterUSN, limit int) (SyncFragment, error) {
|
|
var notes []database.Note
|
|
if err := a.App.DB.Where("user_id = ? AND usn > ? AND usn <= ?", userID, afterUSN, userMaxUSN).Order("usn ASC").Limit(limit).Find(¬es).Error; err != nil {
|
|
return SyncFragment{}, nil
|
|
}
|
|
var books []database.Book
|
|
if err := a.App.DB.Where("user_id = ? AND usn > ? AND usn <= ?", userID, afterUSN, userMaxUSN).Order("usn ASC").Limit(limit).Find(&books).Error; err != nil {
|
|
return SyncFragment{}, nil
|
|
}
|
|
|
|
var items []usnItem
|
|
for _, note := range notes {
|
|
i := usnItem{
|
|
usn: note.USN,
|
|
val: note,
|
|
}
|
|
items = append(items, i)
|
|
}
|
|
for _, book := range books {
|
|
i := usnItem{
|
|
usn: book.USN,
|
|
val: book,
|
|
}
|
|
items = append(items, i)
|
|
}
|
|
|
|
// order by usn in ascending order
|
|
sort.Slice(items, func(i, j int) bool {
|
|
return items[i].usn < items[j].usn
|
|
})
|
|
|
|
fragNotes := []SyncFragNote{}
|
|
fragBooks := []SyncFragBook{}
|
|
fragExpungedNotes := []string{}
|
|
fragExpungedBooks := []string{}
|
|
|
|
fragMaxUSN := 0
|
|
for i := 0; i < limit; i++ {
|
|
if i > len(items)-1 {
|
|
break
|
|
}
|
|
|
|
item := items[i]
|
|
|
|
fragMaxUSN = item.usn
|
|
|
|
switch v := item.val.(type) {
|
|
case database.Note:
|
|
note := item.val.(database.Note)
|
|
|
|
if note.Deleted {
|
|
fragExpungedNotes = append(fragExpungedNotes, note.UUID)
|
|
} else {
|
|
fragNotes = append(fragNotes, NewFragNote(note))
|
|
}
|
|
case database.Book:
|
|
book := item.val.(database.Book)
|
|
|
|
if book.Deleted {
|
|
fragExpungedBooks = append(fragExpungedBooks, book.UUID)
|
|
} else {
|
|
fragBooks = append(fragBooks, NewFragBook(book))
|
|
}
|
|
default:
|
|
return SyncFragment{}, errors.Errorf("unknown internal item type %s", v)
|
|
}
|
|
}
|
|
|
|
ret := SyncFragment{
|
|
FragMaxUSN: fragMaxUSN,
|
|
UserMaxUSN: userMaxUSN,
|
|
CurrentTime: a.App.Clock.Now().Unix(),
|
|
Notes: fragNotes,
|
|
Books: fragBooks,
|
|
ExpungedNotes: fragExpungedNotes,
|
|
ExpungedBooks: fragExpungedBooks,
|
|
}
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func parseGetSyncFragmentQuery(q url.Values) (afterUSN, limit int, err error) {
|
|
afterUSNStr := q.Get("after_usn")
|
|
limitStr := q.Get("limit")
|
|
|
|
if len(afterUSNStr) > 0 {
|
|
afterUSN, err = strconv.Atoi(afterUSNStr)
|
|
|
|
if err != nil {
|
|
err = errors.Wrap(err, "invalid after_usn")
|
|
return
|
|
}
|
|
} else {
|
|
afterUSN = 0
|
|
}
|
|
|
|
if len(limitStr) > 0 {
|
|
l, e := strconv.Atoi(limitStr)
|
|
|
|
if e != nil {
|
|
err = errors.Wrap(e, "invalid limit")
|
|
return
|
|
}
|
|
|
|
if l > 100 {
|
|
err = &queryParamError{
|
|
key: "limit",
|
|
value: limitStr,
|
|
message: "maximum value is 100",
|
|
}
|
|
return
|
|
}
|
|
|
|
limit = l
|
|
} else {
|
|
limit = 100
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
// GetSyncFragmentResp represents a response from GetSyncFragment handler
|
|
type GetSyncFragmentResp struct {
|
|
Fragment SyncFragment `json:"fragment"`
|
|
}
|
|
|
|
// GetSyncFragment responds with a sync fragment
|
|
func (a *API) GetSyncFragment(w http.ResponseWriter, r *http.Request) {
|
|
user, ok := r.Context().Value(helpers.KeyUser).(database.User)
|
|
if !ok {
|
|
handlers.DoError(w, "No authenticated user found", nil, http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
afterUSN, limit, err := parseGetSyncFragmentQuery(r.URL.Query())
|
|
if err != nil {
|
|
handlers.DoError(w, "parsing query params", err, http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
fragment, err := a.newFragment(user.ID, user.MaxUSN, afterUSN, limit)
|
|
if err != nil {
|
|
handlers.DoError(w, "getting fragment", err, http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
response := GetSyncFragmentResp{
|
|
Fragment: fragment,
|
|
}
|
|
handlers.RespondJSON(w, http.StatusOK, response)
|
|
}
|
|
|
|
// GetSyncStateResp represents a response from GetSyncFragment handler
|
|
type GetSyncStateResp struct {
|
|
FullSyncBefore int `json:"full_sync_before"`
|
|
MaxUSN int `json:"max_usn"`
|
|
CurrentTime int64 `json:"current_time"`
|
|
}
|
|
|
|
// GetSyncState responds with a sync fragment
|
|
func (a *API) GetSyncState(w http.ResponseWriter, r *http.Request) {
|
|
user, ok := r.Context().Value(helpers.KeyUser).(database.User)
|
|
if !ok {
|
|
handlers.DoError(w, "No authenticated user found", nil, http.StatusInternalServerError)
|
|
return
|
|
}
|
|
|
|
response := GetSyncStateResp{
|
|
FullSyncBefore: fullSyncBefore,
|
|
MaxUSN: user.MaxUSN,
|
|
// TODO: exposing server time means we probably shouldn't seed random generator with time?
|
|
CurrentTime: a.App.Clock.Now().Unix(),
|
|
}
|
|
|
|
log.WithFields(log.Fields{
|
|
"user_id": user.ID,
|
|
"resp": response,
|
|
}).Info("getting sync state")
|
|
|
|
handlers.RespondJSON(w, http.StatusOK, response)
|
|
}
|