package utils

// ContainsString is 字符串是否包含在字符串切片里
func ContainsString(array []string, val string) (index int) {
	index = -1
	for i := 0; i < len(array); i++ {
		if array[i] == val {
			index = i
			return
		}
	}
	return
}

//ArrayDiff 模拟PHP array_diff函数
func ArrayDiff(array1 []interface{}, othersParams ...[]interface{}) ([]interface{}, error) {
	if len(array1) == 0 {
		return []interface{}{}, nil
	}
	if len(array1) > 0 && len(othersParams) == 0 {
		return array1, nil
	}
	var tmp = make(map[interface{}]int, len(array1))
	for _, v := range array1 {
		tmp[v] = 1
	}
	for _, param := range othersParams {
		for _, arg := range param {
			if tmp[arg] != 0 {
				tmp[arg]++
			}
		}
	}
	var res = make([]interface{}, 0, len(tmp))
	for k, v := range tmp {
		if v == 1 {
			res = append(res, k)
		}
	}
	return res, nil
}

//ArrayIntersect 模拟PHP array_intersect函数
func ArrayIntersect(array1 []interface{}, othersParams ...[]interface{}) ([]interface{}, error) {
	if len(array1) == 0 {
		return []interface{}{}, nil
	}
	if len(array1) > 0 && len(othersParams) == 0 {
		return array1, nil
	}
	var tmp = make(map[interface{}]int, len(array1))
	for _, v := range array1 {
		tmp[v] = 1
	}
	for _, param := range othersParams {
		for _, arg := range param {
			if tmp[arg] != 0 {
				tmp[arg]++
			}
		}
	}
	var res = make([]interface{}, 0, len(tmp))
	for k, v := range tmp {
		if v > 1 {
			res = append(res, k)
		}
	}
	return res, nil

}