use bson::{doc, Document};

use crate::context::CommandContext;
use crate::error::CommandResult;

/// Handle `hello`, `ismaster`, and `isMaster` commands.
///
/// Returns server capabilities matching wire protocol expectations.
pub async fn handle(
    _cmd: &Document,
    _db: &str,
    _ctx: &CommandContext,
) -> CommandResult<Document> {
    Ok(doc! {
        "ismaster": true,
        "isWritablePrimary": true,
        "maxBsonObjectSize": 16_777_216_i32,
        "maxMessageSizeBytes": 48_000_000_i32,
        "maxWriteBatchSize": 100_000_i32,
        "localTime": bson::DateTime::now(),
        "logicalSessionTimeoutMinutes": 30_i32,
        "connectionId": 1_i32,
        "minWireVersion": 0_i32,
        "maxWireVersion": 21_i32,
        "readOnly": false,
        "ok": 1.0,
    })
}