syntax = "proto3";
package engpad.v1;

option go_package = "git.wntrmute.dev/kyle/eng-pad-server/gen/engpad/v1;engpadv1";
option java_package = "net.metacircular.engpad.proto.v1";
option java_multiple_files = true;

import "google/protobuf/timestamp.proto";

service EngPadSyncService {
    rpc SyncNotebook(SyncNotebookRequest) returns (SyncNotebookResponse);
    rpc GetNotebook(GetNotebookRequest) returns (GetNotebookResponse);
    rpc DeleteNotebook(DeleteNotebookRequest) returns (DeleteNotebookResponse);
    rpc ListNotebooks(ListNotebooksRequest) returns (ListNotebooksResponse);
    rpc CreateShareLink(CreateShareLinkRequest) returns (CreateShareLinkResponse);
    rpc RevokeShareLink(RevokeShareLinkRequest) returns (RevokeShareLinkResponse);
    rpc ListShareLinks(ListShareLinksRequest) returns (ListShareLinksResponse);
}

message SyncNotebookRequest {
    int64 notebook_id = 1;
    string title = 2;
    string page_size = 3;
    repeated PageData pages = 4;
}

message PageData {
    int64 page_id = 1;
    int32 page_number = 2;
    repeated StrokeData strokes = 3;
}

message StrokeData {
    float pen_size = 1;
    int32 color = 2;
    string style = 3;
    bytes point_data = 4;
    int32 stroke_order = 5;
}

message SyncNotebookResponse {
    int64 server_notebook_id = 1;
    google.protobuf.Timestamp synced_at = 2;
}

message GetNotebookRequest {
    int64 notebook_id = 1;             // Server-side notebook ID
}

message GetNotebookResponse {
    int64 server_notebook_id = 1;
    int64 remote_id = 2;
    string title = 3;
    string page_size = 4;
    repeated PageData pages = 5;
    google.protobuf.Timestamp synced_at = 6;
}

message DeleteNotebookRequest {
    int64 notebook_id = 1;
}

message DeleteNotebookResponse {}

message ListNotebooksRequest {}

message ListNotebooksResponse {
    repeated NotebookSummary notebooks = 1;
}

message NotebookSummary {
    int64 server_id = 1;
    int64 remote_id = 2;
    string title = 3;
    string page_size = 4;
    int32 page_count = 5;
    google.protobuf.Timestamp synced_at = 6;
}

message CreateShareLinkRequest {
    int64 notebook_id = 1;
    int64 expires_in_seconds = 2;
}

message CreateShareLinkResponse {
    string token = 1;
    string url = 2;
    google.protobuf.Timestamp expires_at = 3;
}

message RevokeShareLinkRequest {
    string token = 1;
}

message RevokeShareLinkResponse {}

message ListShareLinksRequest {
    int64 notebook_id = 1;
}

message ListShareLinksResponse {
    repeated ShareLinkInfo links = 1;
}

message ShareLinkInfo {
    string token = 1;
    string url = 2;
    google.protobuf.Timestamp created_at = 3;
    google.protobuf.Timestamp expires_at = 4;
}