library(RKorAPClient)
library(httr)
library(httpuv)
library(tidyverse)
library(scales)
library(idsThemeR)

icc_base_url = "https://korap.ids-mannheim.de/instance/icc";

connections = list()

icc <- tibble(
  lang = c("eng", "ger", "nor"),
  app_id = c(
    "mTTTnJ6f6hGrPh6dRhbJhJ",
    "TMLPTJfP7rHb93bpFp39mL",
    "TMFtPJnbb7f4MRmd76Rb34"
  )
)


icc_token <- function(lang,  app_id, url = paste0(icc_base_url, '/', lang)) {
  token_key =  paste0("KORAP_ICC_TOKEN_", lang)
  token = Sys.getenv(token_key)
  if (token != "")
    return(token)

  korap_app <- oauth_app("icc-iclc10-contribution", key = app_id, secret = NULL)

  korap_endpoint <- oauth_endpoint(NULL,
                                   "settings/oauth/authorize",
                                   "api/v1.0/oauth2/token",
                                   base_url = url)
  token_bundle = oauth2.0_token(korap_endpoint, korap_app, scope = "search match_info", cache = FALSE)
  token = token_bundle[["credentials"]][["access_token"]]
  do.call(Sys.setenv, as.list(setNames(token, token_key)))
  return(token)
}

icc_con <- function(lang, token = Sys.getenv(paste0("KORAP_ICC_TOKEN_", lang))) {
  if ((! lang %in% names(connections)) || is_empty(connections[[lang]])) {
    url <- paste0(icc_base_url, '/', lang)
    connections[[lang]] <<- new("KorAPConnection", KorAPUrl = url, accessToken = token, cache = F)
  }
  return(connections[[lang]])
}

icc <- icc %>%
  rowwise() %>%
  mutate(token = icc_token(lang, app_id)) %>%
  add_column(tokens=0)


genre <- c("Blog",
             "Creative:Novels_ShortStories",
             "Informational:Learned:Humanities",
             "Informational:Learned:NaturalSciences",
             "Informational:Learned:SocialSciences",
             "Informational:Learned:Technology",
             "Informational:Popular:Humanities",
             "Informational:Popular:NaturalSciences",
             "Informational:Popular:SocialSciences",
             "Informational:Popular:Technology",
             "Informational:Reportage",
             "Instructional:AdministrativeRegulatoryProse",
             "Instructional:Skills_Hobbies",
             "Persuasive"
)

icc_genre <- icc %>%
  expand_grid(genre) %>%
  mutate(vc = paste0("iccGenre=", genre)) %>%
  rowwise() %>%
  mutate(tokens= corpusStats(icc_con(lang, token), vc = vc)@tokens)

icc_genre %>% ggplot(aes(x=lang, fill=genre, y=tokens)) +
  geom_col() + scale_y_continuous(labels = label_number(scale_cut = cut_short_scale())) +
  theme_ids() +
  geom_text(aes(label=if_else(tokens > 0, as.character(tokens), ""), y=tokens), position= position_stack(reverse = F, vjust = 0.5), color="white", size=3.2, family="Fira Sans Condensed")

year <- c(1988:2022)

icc_year <- icc %>%
  expand_grid(year) %>%
  mutate(vc = paste0("pubDate in ", year)) %>%
  rowwise() %>%
  mutate(tokens= corpusStats(icc_con(lang, token), vc = vc)@tokens)

icc_year %>% ggplot(aes(x=year, fill=lang, color=lang, y=tokens)) +
  geom_line() + geom_point() + geom_area() + scale_y_continuous(labels = label_number(scale_cut = cut_short_scale())) +
  theme_ids()