From 9c5753065f6eadacd11fefc577d91c06718ab337 Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Sat, 21 Dec 2019 22:26:19 +0000
Subject: [PATCH] Add methods to query /publicRooms API

---
 client.go    | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 responses.go | 20 ++++++++++++++++++++
 2 files changed, 66 insertions(+)

diff --git a/client.go b/client.go
index fc290ed..acd33df 100644
--- a/client.go
+++ b/client.go
@@ -372,6 +372,52 @@ func (cli *Client) Versions() (resp *RespVersions, err error) {
 	return
 }
 
+// PublicRooms returns the list of public rooms on target server. Does not require Auth. See http://matrix.org/speculator/spec/HEAD/client_server/unstable.html#get-matrix-client-unstable-publicrooms
+func (cli *Client) PublicRooms(limit int, since string, server string) (resp *RespPublicRooms, err error) {
+	args := map[string]string{}
+
+	if limit != 0 {
+		args["limit"] = strconv.Itoa(limit)
+	}
+	if since != "" {
+		args["since"] = since
+	}
+	if server != "" {
+		args["server"] = server
+	}
+
+	urlPath := cli.BuildURLWithQuery([]string{"publicRooms"}, args)
+	err = cli.MakeRequest("GET", urlPath, nil, &resp)
+	return
+}
+
+// PublicRoomsFiltered returns a subset of PublicRooms filtered server side. See http://matrix.org/speculator/spec/HEAD/client_server/unstable.html#post-matrix-client-unstable-publicrooms
+func (cli *Client) PublicRoomsFiltered(limit int, since string, server string, filter string) (resp *RespPublicRooms, err error) {
+	content := map[string]string{}
+
+	if limit != 0 {
+		content["limit"] = strconv.Itoa(limit)
+	}
+	if since != "" {
+		content["since"] = since
+	}
+	if filter != "" {
+		content["filter"] = filter
+	}
+
+	var urlPath string
+	if server == "" {
+		urlPath = cli.BuildURL("publicRooms")
+	} else {
+		urlPath = cli.BuildURLWithQuery([]string{"publicRooms"}, map[string]string{
+			"server": server,
+		})
+	}
+
+	err = cli.MakeRequest("POST", urlPath, content, &resp)
+	return
+}
+
 // JoinRoom joins the client to a room ID or alias. See http://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-join-roomidoralias
 //
 // If serverName is specified, this will be added as a query param to instruct the homeserver to join via that server. If content is specified, it will
diff --git a/responses.go b/responses.go
index 7a3a4ce..1c1fd92 100644
--- a/responses.go
+++ b/responses.go
@@ -22,6 +22,26 @@ type RespVersions struct {
 	Versions []string `json:"versions"`
 }
 
+// RespPublicRooms is the JSON response for http://matrix.org/speculator/spec/HEAD/client_server/unstable.html#get-matrix-client-unstable-publicrooms
+type RespPublicRooms struct {
+	TotalRoomCountEstimate int                `json:"total_room_count_estimate"`
+	PrevBatch              string             `json:"prev_batch"`
+	NextBatch              string             `json:"next_batch"`
+	Chunk                  []PublicRoomsChunk `json:"chunk"`
+}
+
+type PublicRoomsChunk struct {
+	CanonicalAlias   string   `json:"canonical_alias"`
+	Name             string   `json:"name"`
+	WorldReadable    bool     `json:"world_readable"`
+	Topic            string   `json:"topic"`
+	NumJoinedMembers int      `json:"num_joined_members"`
+	AvatarUrl        string   `json:"avatar_url"`
+	RoomID           string   `json:"room_id"`
+	GuestCanJoin     bool     `json:"guest_can_join"`
+	Aliases          []string `json:"aliases"`
+}
+
 // RespJoinRoom is the JSON response for http://matrix.org/docs/spec/client_server/r0.2.0.html#post-matrix-client-r0-rooms-roomid-join
 type RespJoinRoom struct {
 	RoomID string `json:"room_id"`