syntax = "proto3";
package zed.messages;

import "core.proto";
import "buffer.proto";

message Channel {
    uint64 id = 1;
    string name = 2;
    ChannelVisibility visibility = 3;
    int32 channel_order = 4;
    repeated uint64 parent_path = 5;
}

enum ChannelVisibility {
    Public = 0;
    Members = 1;
}

message UpdateChannels {
    repeated Channel channels = 1;
    repeated uint64 delete_channels = 4;
    repeated Channel channel_invitations = 5;
    repeated uint64 remove_channel_invitations = 6;
    repeated ChannelParticipants channel_participants = 7;
    repeated ChannelBufferVersion latest_channel_buffer_versions = 9;

    reserved 8;
    reserved 10 to 15;
}

message UpdateUserChannels {
    repeated ChannelBufferVersion observed_channel_buffer_version = 2;
    repeated ChannelMembership channel_memberships = 3;

    reserved 1;
}

message ChannelMembership {
    uint64 channel_id = 1;
    ChannelRole role = 2;
}

message ChannelMessageId {
    uint64 channel_id = 1;
    uint64 message_id = 2;
}

message ChannelPermission {
    uint64 channel_id = 1;
    ChannelRole role = 3;
}

message ChannelParticipants {
    uint64 channel_id = 1;
    repeated uint64 participant_user_ids = 2;
}

message JoinChannel {
    uint64 channel_id = 1;
}

message DeleteChannel {
    uint64 channel_id = 1;
}

message GetChannelMembers {
    uint64 channel_id = 1;
    string query = 2;
    uint64 limit = 3;
}

message GetChannelMembersResponse {
    repeated ChannelMember members = 1;
    repeated User users = 2;
}

message ChannelMember {
    uint64 user_id = 1;
    Kind kind = 3;
    ChannelRole role = 4;

    enum Kind {
        Member = 0;
        Invitee = 1;
    }
}

message SubscribeToChannels {}

message CreateChannel {
    string name = 1;
    optional uint64 parent_id = 2;
}

message CreateChannelResponse {
    Channel channel = 1;
    optional uint64 parent_id = 2;
}

message InviteChannelMember {
    uint64 channel_id = 1;
    uint64 user_id = 2;
    ChannelRole role = 4;
}

message RemoveChannelMember {
    uint64 channel_id = 1;
    uint64 user_id = 2;
}

enum ChannelRole {
    Admin = 0;
    Member = 1;
    Guest = 2;
    Banned = 3;
    Talker = 4;
}

message SetChannelMemberRole {
    uint64 channel_id = 1;
    uint64 user_id = 2;
    ChannelRole role = 3;
}

message SetChannelVisibility {
    uint64 channel_id = 1;
    ChannelVisibility visibility = 2;
}

message RenameChannel {
    uint64 channel_id = 1;
    string name = 2;
}

message RenameChannelResponse {
    Channel channel = 1;
}

message JoinChannelChat {
    uint64 channel_id = 1;
}

message JoinChannelChatResponse {
    repeated ChannelMessage messages = 1;
    bool done = 2;
}

message LeaveChannelChat {
    uint64 channel_id = 1;
}

message SendChannelMessage {
    uint64 channel_id = 1;
    string body = 2;
    Nonce nonce = 3;
    repeated ChatMention mentions = 4;
    optional uint64 reply_to_message_id = 5;
}

message RemoveChannelMessage {
    uint64 channel_id = 1;
    uint64 message_id = 2;
}

message UpdateChannelMessage {
    uint64 channel_id = 1;
    uint64 message_id = 2;
    Nonce nonce = 4;
    string body = 5;
    repeated ChatMention mentions = 6;
}

message AckChannelMessage {
    uint64 channel_id = 1;
    uint64 message_id = 2;
}

message SendChannelMessageResponse {
    ChannelMessage message = 1;
}

message ChannelMessageSent {
    uint64 channel_id = 1;
    ChannelMessage message = 2;
}

message ChannelMessageUpdate {
    uint64 channel_id = 1;
    ChannelMessage message = 2;
}

message GetChannelMessages {
    uint64 channel_id = 1;
    uint64 before_message_id = 2;
}

message GetChannelMessagesResponse {
    repeated ChannelMessage messages = 1;
    bool done = 2;
}

message GetChannelMessagesById {
    repeated uint64 message_ids = 1;
}

message MoveChannel {
    uint64 channel_id = 1;
    uint64 to = 2;
}

message ReorderChannel {
    uint64 channel_id = 1;
    enum Direction {
        Up = 0;
        Down = 1;
    }
    Direction direction = 2;
}

message JoinChannelBuffer {
    uint64 channel_id = 1;
}

message ChannelBufferVersion {
    uint64 channel_id = 1;
    repeated VectorClockEntry version = 2;
    uint64 epoch = 3;
}

message UpdateChannelBufferCollaborators {
    uint64 channel_id = 1;
    repeated Collaborator collaborators = 2;
}

message UpdateChannelBuffer {
    uint64 channel_id = 1;
    repeated Operation operations = 2;
}

message ChannelMessage {
    uint64 id = 1;
    string body = 2;
    uint64 timestamp = 3;
    uint64 sender_id = 4;
    Nonce nonce = 5;
    repeated ChatMention mentions = 6;
    optional uint64 reply_to_message_id = 7;
    optional uint64 edited_at = 8;
}

message ChatMention {
    Range range = 1;
    uint64 user_id = 2;
}

message RejoinChannelBuffers {
    repeated ChannelBufferVersion buffers = 1;
}

message RejoinChannelBuffersResponse {
    repeated RejoinedChannelBuffer buffers = 1;
}

message AckBufferOperation {
    uint64 buffer_id = 1;
    uint64 epoch = 2;
    repeated VectorClockEntry version = 3;
}

message JoinChannelBufferResponse {
    uint64 buffer_id = 1;
    uint32 replica_id = 2;
    string base_text = 3;
    repeated Operation operations = 4;
    repeated Collaborator collaborators = 5;
    uint64 epoch = 6;
}

message RejoinedChannelBuffer {
    uint64 channel_id = 1;
    repeated VectorClockEntry version = 2;
    repeated Operation operations = 3;
    repeated Collaborator collaborators = 4;
}

message LeaveChannelBuffer {
    uint64 channel_id = 1;
}

message RespondToChannelInvite {
    uint64 channel_id = 1;
    bool accept = 2;
}