// Copyright 2023 Greptime Team
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use std::sync::Arc;

use async_trait::async_trait;
use session::context::QueryContextRef;
use table::requests::{DeleteRequest, InsertRequest};

use crate::error::Result;

pub type AffectedRows = usize;

/// A trait for handling table mutations in `QueryEngine`.
#[async_trait]
pub trait TableMutationHandler: Send + Sync {
    /// Inserts rows into the table.
    async fn insert(&self, request: InsertRequest, ctx: QueryContextRef) -> Result<AffectedRows>;

    /// Delete rows from the table.
    async fn delete(&self, request: DeleteRequest, ctx: QueryContextRef) -> Result<AffectedRows>;
}

pub type TableMutationHandlerRef = Arc<dyn TableMutationHandler>;
