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functions.R
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functions.R
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import_tweets <- function(
file,
start_date = NULL,
blocklist = NULL,
tz_global = tz_global()
) {
tweets <-
readRDS(file) %>%
mutate(created_at = lubridate::with_tz(created_at, tz_global())) %>%
tweets_since(TWEETS_START_DATE) %>%
tweets_not_hashdump() %>%
arrange(desc(created_at))
if(!"is_quote" %in% names(tweets)) tweets$is_quote <- FALSE
if(!"is_retweet" %in% names(tweets)) tweets$is_retweet <- FALSE
tweets
}
tweets_since <- function(tweets, since = "2019-08-01", tz = NULL) {
if (is.null(since)) return(tweets)
if (is.character(since)) since <- lubridate::ymd_hms(since, truncated = 3, tz = tz_global(tz))
tweets %>%
filter(created_at >= since)
}
tweets_in_last <- function(tweets, d = 0, h = 0, m = 15, s = 0){
tweets %>%
filter(created_at >= lubridate::now() - lubridate::hours(h+d * 24) -
lubridate::minutes(m) - lubridate::seconds(s))
}
tweets_not_hashdump <- function(tweets) {
tweets %>%
mutate(n_hash = map_int(hashtags, length)) %>%
filter(n_hash <= 7) %>%
select(-n_hash)
}
tweets_just <- function(tweets, ...) {
vars <- rlang::enquos(...)
if (!length(vars)) {
tweets %>%
select(user_id, status_id, created_at, screen_name, text, party, riding)
} else {
tweets %>% select(!!!vars)
}
}
tz_global <- function(tz = NULL) {
if (!is.null(tz)) return(tz)
tz <- Sys.getenv("TZ")
if (tz == "") "UTC" else tz
}
library(aws.s3)
#tweets_saved <- readRDS("data/tweets.rds")
#tweets_saved <- readRDS(TWEETS_FILE)
get_user_tweets <- function(n){
library(rtweet)
library(tidyverse)
library(glue)
library(aws.s3)
s3BucketName <- "candidate-tweets-2019"
name <- get_bucket(s3BucketName)[[1]][[1]]
tweets_saved <- s3readRDS(object = name, bucket = s3BucketName)
#since_id() function not working so doing this to get latest tweet saved
since_id <- as.character(tweets_saved %>% top_n(status_id, n = 1) %>% select(status_id))
#thanks - from https://stackoverflow.com/questions/42025979/avoid-rate-limit-with-rtweet-get-timeline
#function to get timelines for each user set at n amount
get_timeline_unlimited <- function(users, n){
if (length(users) ==0){
return(NULL)
}
rl <- rate_limit(query = "get_timeline")
if (length(users) <= rl$remaining){
print(glue("Getting data for {length(users)} users"))
tweets <- get_timeline(users,
n,
check = FALSE,
since_id = since_id)
}else{
if (rl$remaining > 0){
users_first <- users[1:rl$remaining]
users_rest <- users[-(1:rl$remaining)]
print(glue("Getting data for {length(users_first)} users"))
tweets_first <- get_timeline(users_first,
n,
check = FALSE,
parse = FALSE,
since_id = since_id
)
rl <- rate_limit(query = "get_timeline")
}else{
tweets_first <- NULL
users_rest <- users
}
wait <- rl$reset + 0.1
print(glue("Waiting for {round(wait,2)} minutes"))
Sys.sleep(wait * 60)
tweets_rest <- get_timeline_unlimited(users_rest, n)
tweets <- bind_rows(tweets_first, tweets_rest)
}
return(tweets)
}
#load in the handles of the candidates
handles_orig <- read.csv("./data/candidate_twitter_handles.csv",
na.strings = "",
colClasses = "character",
encoding = "UTF-8")
#make sure that the handles are the right char length (some links in the mix)
handles <- handles_orig %>%
filter(!is.na(twitter_handle) & str_length(twitter_handle) <= 15) %>%
mutate(twitter_handle = tolower(twitter_handle)) %>%
pull(twitter_handle)
#convert to char only
#handles <- as.character(handles_only$twitter_handle[1:length(handles_only$twitter_handle)])
#import new tweets using function
tweets <- get_timeline_unlimited(handles, 100)
#clean imported tweets
tweets <- tweets %>%
select(user_id:text, favorite_count, retweet_count, is_retweet, is_quote,
source, hashtags, media_url, media_type, profile_url, profile_image_url) %>%
filter(created_at > lubridate::ymd("2019-08-01")) %>% #min date Aug 1st
mutate(screen_name = tolower(screen_name))
#ensure newly imported tweets don't include doubles
new_tweets_only <- anti_join(tweets, tweets_saved, by = "status_id")
print(paste("There are", nrow(new_tweets_only), "new tweets to add"))
#join updated tweets to party and riding
new_tweets_only <- new_tweets_only %>%
left_join(handles, by = c("screen_name" = "twitter_handle"))
tweets <- bind_rows(tweets_saved, new_tweets_only)
#save to local
saveRDS(tweets, file = TWEETS_FILE)
#also save to s3
s3saveRDS(bucket = s3BucketName,
object = paste0(as.character(substitute(tweets)), ".rds"))
return(tweets)
}
get_tweet_blockquote <- function(screen_name, status_id, ..., null_on_error = TRUE, theme = "light") {
oembed <- list(...)$oembed
if (!is.null(oembed) && !is.na(oembed)) return(unlist(oembed))
oembed_url <- glue::glue("https://publish.twitter.com/oembed?url=https://twitter.com/{screen_name}/status/{status_id}&omit_script=1&dnt=1&theme={theme}")
bq <- possibly(httr::GET, list(status_code = 999))(URLencode(oembed_url))
if (bq$status_code >= 400) {
if (null_on_error) return(NULL)
'<blockquote style="font-size: 90%">Sorry, unable to get tweet ¯\\_(ツ)_/¯</blockquote>'
} else {
httr::content(bq, "parsed")$html
}
}
twemoji <- function(runes, width = "20px") {
runes <- tolower(runes)
runes <- gsub(" ", "-", runes)
runes <- sub("-fe0f$", "", runes) # seems to cause problems with twemoji :shrug:
emojis <- glue::glue("https://cdnjs.cloudflare.com/ajax/libs/twemoji/11.2.0/2/svg/{runes}.svg")
emojis <- glue::glue('<img src="{emojis}" width = "{width}">')
paste(emojis)
}
cache_profile_image <- function(profile_image_url, location = "www", default = "twitter-default-profile.jpg") {
file_serve <- str_replace(profile_image_url, ".+/profile", "profile")
file_local <- fs::path(location, file_serve)
if (fs::file_exists(file_local)) {
x <- list(result = file_serve)
} else {
fs::dir_create(fs::path_dir(file_local))
x <- safely(download.file)(profile_image_url, file_local)
# On fist download, the image won't be ready for the UI, so show default
if (is.null(x$error)) x$result <- default
}
if (is.null(x$error)) x$result else default
}
tz_global <- function(tz = NULL) {
if (!is.null(tz)) return(tz)
tz <- Sys.getenv("TZ")
if(tz == "") "UTC" else tz
}
# Progress Bar
#' Progress Bar
#'
#' From: https://github.com/rstudio/shinydashboard/issues/119
progressBar <- function(
value = 0,
label = FALSE,
color = "aqua",
size = NULL,
striped = FALSE,
active = FALSE,
vertical = FALSE
) {
stopifnot(is.numeric(value))
if (value < 0 || value > 100)
stop("'value' should be in the range from 0 to 100.", call. = FALSE)
# if (!(color %in% shinydashboard:::validColors || color %in% shinydashboard:::validStatuses))
# stop("'color' should be a valid status or color.", call. = FALSE)
if (!is.null(size))
size <- match.arg(size, c("sm", "xs", "xxs"))
text_value <- paste0(value, "%")
if (vertical)
style <- htmltools::css(height = text_value, `min-height` = "2em")
else
style <- htmltools::css(width = text_value, `min-width` = "2em")
tags$div(
class = "progress",
class = if (!is.null(size)) paste0("progress-", size),
class = if (vertical) "vertical",
class = if (active) "active",
tags$div(
class = "progress-bar",
class = paste0("progress-bar-", color),
class = if (striped) "progress-bar-striped",
style = style,
role = "progressbar",
`aria-valuenow` = value,
`aria-valuemin` = 0,
`aria-valuemax` = 100,
tags$span(class = if (!label) "sr-only", text_value)
)
)
}
#' Progress Group
progressGroup <- function(text, value, min = 0, max = value, color = "aqua") {
stopifnot(is.character(text))
stopifnot(is.numeric(value))
if (value < min || value > max)
stop(sprintf("'value' should be in the range from %d to %d.", min, max), call. = FALSE)
tags$div(
class = "progress-group",
tags$span(class = "progress-text", text),
tags$span(class = "progress-number", sprintf("%d / %d", value, max)),
progressBar(round(value / max * 100), color = color, size = "sm")
)
}
progressBar_v <- function(x, colors) {
if (length(colors) > length(x)) {
colors <- rep(colors, ceiling(length(x)/length(colors)))
}
x <- purrr::map2(x, colors[seq_along(x)], ~ progressBar(.x, color = .y))
map_chr(x, paste)
}
masonify_tweets <- function(tweets, id = NULL, class = NULL) {
stopifnot("status_id" %in% names(tweets))
t_embed <-
tweets %>%
pmap(get_tweet_blockquote) %>%
map(HTML) %>%
map(tags$div, class = "tweet-item")
tagList(
tags$div(id = id,
class = paste("masonry text-left", class),
t_embed
)
)
}
get_tweet_blockquote <- function(screen_name, status_id, ..., null_on_error = TRUE, theme = "light") {
oembed <- list(...)$oembed
if (!is.null(oembed) && !is.na(oembed)) return(unlist(oembed))
oembed_url <- glue::glue("https://publish.twitter.com/oembed?url=https://twitter.com/{screen_name}/status/{status_id}&omit_script=1&dnt=1&theme={theme}")
bq <- possibly(httr::GET, list(status_code = 999))(URLencode(oembed_url))
if (bq$status_code >= 400) {
if (null_on_error) return(NULL)
'<blockquote style="font-size: 90%">Sorry, unable to get tweet ¯\\_(ツ)_/¯</blockquote>'
} else {
httr::content(bq, "parsed")$html
}
}
tweet_cache_oembed <- function(tweets, cache = "data/tweets_oembed.rds") {
if (fs::file_exists(cache)) {
oembed <- readRDS(cache)
tweets <- left_join(tweets, oembed, by = "status_id")
} else {
oembed <- tibble(status_id = character(), oembed = character())
}
if (!"oembed" %in% names(tweets)) tweets$oembed <- map(seq_len(nrow(tweets)), ~ NULL)
is_needed <- map_lgl(tweets$oembed, is.null)
if (any(is_needed)) {
tweets$oembed[is_needed] <- if (requireNamespace("furrr", quietly = TRUE)) {
furrr::future_pmap(tweets[is_needed, ], get_tweet_blockquote, null_on_error = FALSE, .progress = TRUE)
} else {
pmap(tweets[is_needed, ], get_tweet_blockquote, null_on_error = FALSE)
}
oembed_new <- tweets %>% select(status_id, oembed)
# oembed may be a superset of the oembed we got from these tweets
# so the following keeps the old oembed not contained in oembed_new
oembed <- bind_rows(
semi_join(oembed_new, oembed, by = "status_id"),
anti_join(oembed_new, oembed, by = "status_id")
)
saveRDS(oembed, cache)
}
return(tweets)
}