// 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.

syntax = "proto3";

package greptime.v1.meta;

option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta";

import "greptime/v1/meta/common.proto";
import "greptime/v1/meta/route.proto";
import "greptime/v1/ddl.proto";
import "greptime/v1/common.proto";

enum DdlTaskType {
    Create = 0;
    Drop = 1;
}

message CreateDatabaseTask {
    CreateDatabaseExpr create_database = 1;
}

message CreateTableTask {
    CreateTableExpr create_table = 1;
    repeated Partition partitions = 2;
    bytes table_info = 3;
}

message CreateTableTasks { repeated CreateTableTask tasks = 1; }

message DropTableTask{
    DropTableExpr drop_table = 1;
}

message DropTableTasks { repeated DropTableTask tasks = 1; }

message AlterTableTask{
    AlterTableExpr alter_table = 1;
}

message AlterTableTasks { repeated AlterTableTask tasks = 1; }

message TruncateTableTask {
    TruncateTableExpr truncate_table = 1;
}

message DropDatabaseTask {
    DropDatabaseExpr drop_database = 1;
}

message CreateFlowTask {
    CreateFlowExpr create_flow = 1;
}

message DropFlowTask {
    DropFlowExpr drop_flow = 1;
}

// Create a view task
message CreateViewTask {
    CreateViewExpr create_view = 1;
    bytes view_info = 2;
}

// Drop a view task
message DropViewTask {
    DropViewExpr drop_view = 1;
}

// Alter database tasks
message AlterDatabaseTask {
    AlterDatabaseExpr task = 1;
}

message DdlTaskRequest {
    RequestHeader header = 1;
    QueryContext query_context = 64;

    oneof task {
        CreateTableTask create_table_task = 2;
        DropTableTask drop_table_task = 3;
        AlterTableTask alter_table_task = 4;
        TruncateTableTask truncate_table_task = 5;
        CreateTableTasks create_table_tasks = 6;
        DropTableTasks drop_table_tasks = 7;
        AlterTableTasks alter_table_tasks = 8;
        DropDatabaseTask drop_database_task = 9;
        CreateDatabaseTask create_database_task = 10;
        CreateFlowTask create_flow_task = 11;
        DropFlowTask drop_flow_task = 12;
        CreateViewTask create_view_task = 13;
        DropViewTask drop_view_task = 14;
        AlterDatabaseTask alter_database_task = 15;
     }
}

message DdlTaskResponse {
    ResponseHeader header = 1;
    ProcedureId pid = 2;

    // Returns if the tables created.
    repeated TableId table_ids = 5;
}
