functional programming: user-defined function to parse multiple csvs, create variables, and count NA in R

I have about 100 data sets with different variables (and different numbers of variables) but each data set has a household ID (hh_ID) as identifier. Variables represent survey questions. Each csv represents a different type of survey. I want to write a custom function that counts the number of times a household was asked a question and the number of times a question was skipped (NA). The problem I have is changing the name of the variables and counting through csvs.

Let's say two dataframes look like this:

hh_ID <- c(1,1,2,2,2)
question1 <- c(NA,1,0,0,0)
question2 <- c(1,1,NA,0,0)
df1 <- data.frame(hh_ID, question1, question2)

hh_ID <- c(1,1,1,2,2)
question3 <- c(NA,NA,0,0,0)
question4 <- c(1,1,1,NA,NA)
df2 <- data.frame(hh_ID, question3, question4)

I need the final dataframe to make it look like this:

question1_count <- c(2,3)
question1_NAs   <- c(1,0)
question2_count <- c(2,3)
question2_NAs   <- c(0,1)
question3_count <- c(3,2)
question3_NAs   <- c(2,0)
question4_count <- c(3,2)
question4_NAs <- c(0,2)
finaldf <- data.frame(hh_ID,question1_count, question1_NAs,question2_count,question2_NAs,question3_count,question3_NAs, question4_count,question4_NAs) 

This is what I have so far:

# read in each dta file
filenames <- list.files(path=mydirectory, pattern=".*dta")
for (i in 1:length(filenames)){
assign(filenames(i), read_dta(paste("", filenames(i), sep=''))
)}

variable_NA_count <- function(dataset, col_name){
temp <- dataset %>% group_by(hh_ID) %>% summarise(question_count = n()) 
temp1 <- aggregate(col_name ~ hh_ID, data=dataset, function(x) {sum(is.na(x))}, na.action = NULL)
final <- merge(temp, temp1, by = "hh_ID")
return(final)}

frequency <- function(dataset, col_name){
temp <- variable_NA_count(dataset, col_name)
temp <- temp %>% select(question1_count = question_count,
                        question1_NAs = col_name)}

The problem is that I want each variable name to end in "_count" and "_NAs" without explicitly typing "question1_count = question_count". I have hundreds of variables in csvs, so I need a function that reads every csv, reads each column name, count the number of times a household was asked a question and the number of times they did not respond. I have tried various ways such as paste function but still hitting a wall.

Thank you!

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