// Copyright 2024 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 binary

import (
	"github.com/dolthub/go-mysql-server/sql"

	"github.com/dolthub/doltgresql/server/functions/framework"
	pgtypes "github.com/dolthub/doltgresql/server/types"
)

// These functions can be gathered using the following query from a Postgres 15 instance:
// SELECT * FROM pg_operator o WHERE o.oprname = '|' ORDER BY o.oprcode::varchar;

// initBinaryBitOr registers the functions to the catalog.
func initBinaryBitOr() {
	framework.RegisterBinaryFunction(framework.Operator_BinaryBitOr, int2or)
	framework.RegisterBinaryFunction(framework.Operator_BinaryBitOr, int4or)
	framework.RegisterBinaryFunction(framework.Operator_BinaryBitOr, int8or)
}

// int2or_callable is the callable logic for the int2or function.
func int2or_callable(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1 any, val2 any) (any, error) {
	return int16(val1.(int16) | val2.(int16)), nil
}

// int2or represents the PostgreSQL function of the same name, taking the same parameters.
var int2or = framework.Function2{
	Name:       "int2or",
	Return:     pgtypes.Int16,
	Parameters: [2]*pgtypes.DoltgresType{pgtypes.Int16, pgtypes.Int16},
	Strict:     true,
	Callable:   int2or_callable,
}

// int4or_callable is the callable logic for the int4or function.
func int4or_callable(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1 any, val2 any) (any, error) {
	return int32(val1.(int32) | val2.(int32)), nil
}

// int4or represents the PostgreSQL function of the same name, taking the same parameters.
var int4or = framework.Function2{
	Name:       "int4or",
	Return:     pgtypes.Int32,
	Parameters: [2]*pgtypes.DoltgresType{pgtypes.Int32, pgtypes.Int32},
	Strict:     true,
	Callable:   int4or_callable,
}

// int8or_callable is the callable logic for the int8or function.
func int8or_callable(ctx *sql.Context, _ [3]*pgtypes.DoltgresType, val1 any, val2 any) (any, error) {
	return int64(val1.(int64) | val2.(int64)), nil
}

// int8or represents the PostgreSQL function of the same name, taking the same parameters.
var int8or = framework.Function2{
	Name:       "int8or",
	Return:     pgtypes.Int64,
	Parameters: [2]*pgtypes.DoltgresType{pgtypes.Int64, pgtypes.Int64},
	Strict:     true,
	Callable:   int8or_callable,
}