mirror of
https://github.com/hoernschen/dendrite.git
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113 lines
3.5 KiB
Go
113 lines
3.5 KiB
Go
// Copyright 2017 Vector Creations Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package directory
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import (
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"net/http"
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"strconv"
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"github.com/matrix-org/dendrite/clientapi/httputil"
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"github.com/matrix-org/dendrite/clientapi/jsonerror"
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"github.com/matrix-org/dendrite/publicroomsapi/storage"
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"github.com/matrix-org/dendrite/publicroomsapi/types"
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"github.com/matrix-org/util"
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)
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type publicRoomReq struct {
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Since string `json:"since,omitempty"`
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Limit int16 `json:"limit,omitempty"`
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Filter filter `json:"filter,omitempty"`
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}
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type filter struct {
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SearchTerms string `json:"generic_search_term,omitempty"`
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}
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type publicRoomRes struct {
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Chunk []types.PublicRoom `json:"chunk"`
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NextBatch string `json:"next_batch,omitempty"`
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PrevBatch string `json:"prev_batch,omitempty"`
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Estimate int64 `json:"total_room_count_estimate,omitempty"`
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}
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// GetPublicRooms implements GET /publicRooms
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func GetPublicRooms(
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req *http.Request, publicRoomDatabase *storage.PublicRoomsServerDatabase,
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) util.JSONResponse {
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var limit int16
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var offset int64
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var request publicRoomReq
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var response publicRoomRes
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if fillErr := fillPublicRoomsReq(req, &request); fillErr != nil {
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return *fillErr
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}
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limit = request.Limit
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offset, err := strconv.ParseInt(request.Since, 10, 64)
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// ParseInt returns 0 and an error when trying to parse an empty string
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// In that case, we want to assign 0 so we ignore the error
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if err != nil && len(request.Since) > 0 {
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return httputil.LogThenError(req, err)
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}
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if response.Estimate, err = publicRoomDatabase.CountPublicRooms(req.Context()); err != nil {
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return httputil.LogThenError(req, err)
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}
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if offset > 0 {
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response.PrevBatch = strconv.Itoa(int(offset) - 1)
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}
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nextIndex := int(offset) + int(limit)
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if response.Estimate > int64(nextIndex) {
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response.NextBatch = strconv.Itoa(nextIndex)
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}
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if response.Chunk, err = publicRoomDatabase.GetPublicRooms(
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req.Context(), offset, limit, request.Filter.SearchTerms,
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); err != nil {
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return httputil.LogThenError(req, err)
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}
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return util.JSONResponse{
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Code: http.StatusOK,
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JSON: response,
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}
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}
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// fillPublicRoomsReq fills the Limit, Since and Filter attributes of a GET or POST request
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// on /publicRooms by parsing the incoming HTTP request
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// Filter is only filled for POST requests
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func fillPublicRoomsReq(httpReq *http.Request, request *publicRoomReq) *util.JSONResponse {
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if httpReq.Method == http.MethodGet {
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limit, err := strconv.Atoi(httpReq.FormValue("limit"))
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// Atoi returns 0 and an error when trying to parse an empty string
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// In that case, we want to assign 0 so we ignore the error
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if err != nil && len(httpReq.FormValue("limit")) > 0 {
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reqErr := httputil.LogThenError(httpReq, err)
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return &reqErr
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}
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request.Limit = int16(limit)
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request.Since = httpReq.FormValue("since")
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return nil
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} else if httpReq.Method == http.MethodPost {
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return httputil.UnmarshalJSONRequest(httpReq, request)
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}
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return &util.JSONResponse{
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Code: http.StatusMethodNotAllowed,
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JSON: jsonerror.NotFound("Bad method"),
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}
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}
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