// 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;

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

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

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 CreateTriggerTask {
  CreateTriggerExpr create_trigger = 1;
}

message DropTriggerTask {
  DropTriggerExpr drop_trigger = 1;
}

message CommentOnTask {
  CommentOnExpr comment_on = 1;
}

message DdlTaskRequest {
  RequestHeader header = 1;
  // The query context for the ddl procedures.
  QueryContext query_context = 64;
  // The timeout will be passed to the procedure.
  //
  // Note: Each procedure may implement its own timeout handling mechanism.
  bool wait = 65;
  // The flag that controls whether to wait for the procedure to complete.
  //
  // If wait is `true`, the procedure will wait for completion(success or failure) and the result will be returned.
  // Otherwise, the procedure will be submitted and return the [ProcedureId](common_procedure::ProcedureId) immediately.
  //
  // Note: The value of `wait` is independent of the `timeout` option. If a procedure ignores the `timeout` and `wait` is set to true, the operation returns until the procedure completes.
  uint32 timeout_secs = 66;

  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;
    CreateTriggerTask create_trigger_task = 16;
    DropTriggerTask drop_trigger_task = 17;
    CommentOnTask comment_on_task = 18;
  }
}

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

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