syntax = "proto3";
package river;

import "google/protobuf/empty.proto";

message ChannelMessage {
    message Reaction {
        string ref_event_id = 1;
        string reaction = 2;
    }

    message Edit {
        string ref_event_id = 1;
        Post post = 2;
    }

    message Redaction {
        string ref_event_id = 1;
        optional string reason = 2;
    }

    message Post {
        message Mention {
            string user_id = 1;
            string display_name = 2;
            oneof mentionBehavior {
                google.protobuf.Empty at_channel = 100;
                RoleMention at_role = 101;
            }
        }

        message RoleMention {
            int32 role_id = 1;
        }

        message Attachment {
            oneof content {
                Content.Image image = 101;
                ChunkedMedia chunkedMedia = 103;
                Content.EmbeddedMessage embeddedMessage = 104;
                Content.UnfurledURL unfurledUrl = 105;
                Content.Ticker ticker = 106;
                Content.Miniapp miniapp = 107;
            }
        }
        
        message Content {
            message Text {
                string body = 1;
                repeated Mention mentions = 2;
                repeated Attachment attachments = 3;
            }

            message Image {
                message Info {
                    string url = 1;
                    string mimetype = 2;
                    optional int32 size = 3;
                    optional int32 width = 4;
                    optional int32 height = 5;
                }
                string title = 1;
                Info info = 2;
                optional Info thumbnail = 3;
            }

            message GM {
                string type_url = 1;
                optional bytes value = 2;
            }

            message EmbeddedMessage {

                message Info {
                    string userId = 1;
                    int64 createdAtEpochMs = 2;
                    string spaceId = 3;
                    string channelId = 4;
                    string messageId = 5;
                    optional string replyId = 6;
                }
                
                message StaticInfo {
                    optional string userName = 1;
                    optional string displayName = 2;
                    optional string channelName = 3;
                    optional string spaceName = 4;
                    optional string ensName = 5;
                }

                string url = 1;
                ChannelMessage.Post post = 2;
                Info info = 3;
                StaticInfo staticInfo = 4;
            }

            message UnfurledURL {
                message Image {
                    int32 height = 1;
                    int32 width = 2;
                    string url = 3;
                }
                string url = 1;
                string description = 2;
                string title = 3;
                optional UnfurledURL.Image image = 4;
            }

            message Ticker {
                string address = 1;
                string chain_id = 2;
            }

            message Miniapp {
                string url = 1;
            }
        }
        
        optional string thread_id = 1;
        optional string thread_preview = 2;
        optional string reply_id = 3;
        optional string reply_preview = 4;
    
        oneof content {
            Content.Text text = 101;
            Content.Image image = 102;
            Content.GM gm = 103;
        }
    }
    
    oneof payload {
        Post post = 1;
        Reaction reaction = 2;
        Edit edit = 3;
        Redaction redaction = 4;
    }
}

message ChannelProperties {
    string name = 1;
    string topic = 2;
}

message UserMetadataProperties {
    optional string username = 1;
    optional string display_name = 2;
}

message FullyReadMarkers {
    message Content {
        string channel_id = 1;
        optional string thread_parent_id = 2;
        string event_id = 3; // id of the first unread event in the stream
        int64 event_num = 4; // event number of the first unread event in the stream
        int64 begin_unread_window = 5; // begining of the unread window, on marking as read, number is set to end+1
        int64 end_unread_window = 6; // latest event seen by the code
        bool is_unread = 7;
        int64 markedReadAtTs = 8; // timestamp when the event was marked as read
        int32 mentions = 9;
    }
    // map of ThreadId to Content
    map<string, Content> markers = 1;
}

/** 
* UserInboxMessage payload for group session key sharing.
*/
message SessionKeys {
    repeated string keys = 1;
}

message HybridGroupSessionKey {
    bytes session_id = 1;
    bytes stream_id = 2;
    bytes key = 3;
    int64 miniblock_num = 4;
    bytes miniblock_hash = 5;
}

message MediaInfo {
    string mimetype = 1;
    int64 sizeBytes = 2;
    int32 widthPixels = 3;
    int32 heightPixels = 4;
    string filename = 5;
}
                
message EmbeddedMedia {
    MediaInfo info = 1;
    bytes content = 2;
}

message ChunkedMedia {
    message AESGCM {
        bytes iv = 1;
        bytes secretKey = 2;
    }

    MediaInfo info = 1;
    string streamId = 2;
    EmbeddedMedia thumbnail = 3;
    oneof encryption {
        AESGCM aesgcm = 101;
    }
}

message UserBio {
    string bio = 1;
    optional uint64 updated_at_epoch_ms = 2;
}

// a client created with an bearer token cannot make blockchain transactions, but can add events to the river nodes
message BearerToken {
    string delegate_private_key = 1;
    bytes delegate_sig = 2;
    int64 expiry_epoch_ms = 3;
}

message ExportedDevice {
    message GroupSession {
        string session_id = 1;
        string stream_id = 2;
        string session = 3;
    }

    message HybridGroupSession {
        string session_id = 1;
        string stream_id = 2;
        bytes session_key = 3;
        int64 miniblock_num = 4;
    }

    string pickleKey = 1;
    string pickledAccount = 2;
    repeated GroupSession outboundSessions = 3;
    repeated GroupSession inboundSessions = 4;
    repeated HybridGroupSession hybridGroupSessions = 5;
}

message AppPrivateData {
    string private_key = 1;
    ExportedDevice encryption_device = 2;
    string env = 3; // alpha, gamma, delta, omega
    bytes app_address = 4;
}