syntax = "proto3";

package smartbotic.proto;

option cc_enable_arenas = true;

// Common timestamp message
message Timestamp {
    int64 milliseconds = 1;
}

// Error details
message Error {
    int32 code = 1;
    string message = 2;
    string details = 3;  // JSON string for additional info
}

// Pagination request
message PaginationRequest {
    int32 page = 1;
    int32 page_size = 2;
    string cursor = 3;  // Alternative to offset pagination
}

// Pagination response
message PaginationResponse {
    int32 total_count = 1;
    int32 page = 2;
    int32 page_size = 3;
    bool has_more = 4;
    string next_cursor = 5;
}

// Generic key-value pair
message KeyValue {
    string key = 1;
    string value = 2;
}

// Request metadata
message RequestMeta {
    string request_id = 1;
    string user_id = 2;
    map<string, string> headers = 3;
}

// Empty message for void returns
message Empty {}