// Copyright 2021 Dolthub, Inc.
//
// 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.

namespace serial;

table Column {
  name:string (required);
  storage_order:uint16;
  schema_order:uint16;

  type:Type (required);
  nullable:bool;
  primary_key:bool;
  auto_increment:bool;
  default:ColumnDefault;
  constraints:[ColumnConstraint] (required);
  comment:string (required);
}

// based on schema_marshalling.go:encodeTypeInfo()
table Type {
  type:string (required);
  param_keys:[string] (required);
  param_values:[string] (required);
}

table ColumnDefault {
  expression:string (required);
}

table ColumnConstraint {
  name:string (required);
  expression:string (required);
  enforced:bool;
}

table TableSchema {
  columns:[Column] (required);
  indexes:[IndexSchema] (required);
}

table IndexSchema {
  name:string (required);
  columns:[string] (required);
  unique:bool;
  system_defined:bool;
  comment:string (required);
}

enum ForeignKeyReferenceOption : uint8 {
  DefaultAction,
  Cascade,
  NoAction,
  Restrict,
  SetNull,
}

table ForeignKey {
  name:string (required);

  child_table:string (required);
  child_columns:[string] (required);
  child_index:string (required);

  parent_table:string (required);
  parent_columns:[string] (required);
  parent_index:string (required);

  on_update:ForeignKeyReferenceOption;
  on_delete:ForeignKeyReferenceOption;

  // todo(andy): "resolved details"
}
