// Copyright 2023 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.

package ast

import (
	vitess "github.com/dolthub/vitess/go/vt/sqlparser"

	"github.com/dolthub/doltgresql/server/auth"

	"github.com/dolthub/doltgresql/postgres/parser/sem/tree"
)

// nodeCreateSchema handles *tree.CreateSchema nodes.
func nodeCreateSchema(ctx *Context, node *tree.CreateSchema) (vitess.Statement, error) {
	if node == nil {
		return nil, nil
	}

	// CREATE SCHEMA AUTHORIZATION s1 creates a schema of the same name
	schemaName := node.Schema
	if schemaName == "" {
		schemaName = node.AuthRole
	}

	return &vitess.DBDDL{
		Action:           "CREATE",
		SchemaOrDatabase: "schema",
		DBName:           schemaName,
		IfNotExists:      node.IfNotExists,
		CharsetCollate:   nil, // TODO
		Auth: vitess.AuthInformation{
			AuthType:    auth.AuthType_CREATE,
			TargetType:  auth.AuthTargetType_DatabaseIdentifiers,
			TargetNames: []string{""},
		},
	}, nil
}