// Copyright © 2016 Abcum Ltd
//
// 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 fncs

import (
	"context"
)

func count(ctx context.Context, args ...interface{}) (interface{}, error) {
	var out float64
	arr, _ := ensureSlice(args[0])
	for _, v := range arr {
		if v != nil {
			out++
		}
	}
	return out, nil
}

func countIf(ctx context.Context, args ...interface{}) (interface{}, error) {
	var out float64
	arr, _ := ensureSlice(args[0])
	for _, v := range arr {
		if v == args[1] {
			out++
		}
	}
	return out, nil
}

func countNot(ctx context.Context, args ...interface{}) (interface{}, error) {
	var out float64
	arr, _ := ensureSlice(args[0])
	for _, v := range arr {
		if v != args[1] {
			out++
		}
	}
	return out, nil
}