estmap/R/maaamet_kaardiruudud.R

#' Maa-ameti kaardiruudukesed
#'
#' Source: \url{https://geoportaal.maaamet.ee/est/Ruumiandmed/Kaardilehtede-susteemid-p224.html}. Andmed salvestatakse postgisi andmebaasi. Schema = 'maaamet'. Koniguratsiooni muutmiseks muuda konfiguratsiooni. Muutujate vaikeväärtused on sellised, et ei ole vaja midagi muuta.
#' @param conf A list() of configuration variables. Default values \code{\link[ruut]{get_config}}.
#' @return No output.
#' @seealso [ruut::get_config()], [ruut::copy_shp_to_db()]
#' @keywords postgis, maps, ESRI Shpfile, OSM
#' @export
#' @examples
#' \dontrun{
#'
#' conf <- ruut::get_config()
#' maaamet_kaardiruudud(conf = conf)
#' }
maaamet_kaardiruudud <- function(conf = NULL) {
  ans <- utils::askYesNo("Do you want to import maps into database?", default = F)
  if (!ans | is.na(ans)) {
    cat("\n------------------------\n")
    cat("Kaardikihte ei lisatud.")
    cat("\n------------------------\n")
    return()
  }
  if (ans) {
    # Temp directory
    tmp_dir <- sprintf("%s/tmp/%s", system.file(package = "estmap"), "maaamet_epk")
    if (!dir.exists(tmp_dir)) {
      dir.create(tmp_dir)
    }
    # Params
    params <- c("epk2T_SHP", "epk10T_SHP", "epk20T_shp", "epk50T_shp", "epk100T_shp", "epk200T_shp")
    # Export to postgis
    if (is.null(conf)) {
      conf <- ruut::get_config()
      conf$schema <- "maaamet"
    }
    # New schema
    ruut::db_create_new_schema(conf = conf)
    for (j in 1:length(params)) {
      # Shapefile (ZIP archive)
      param_split <- strsplit(params[j], "_")[[1]][1]
      map_shapefile <- sprintf("%s.zip", param_split)
      # Download and save
      saveTo <- sprintf("%s/%s", tmp_dir, map_shapefile)
      if (!file.exists(saveTo)) {
        utils::download.file(
          url = sprintf("https://geoportaal.maaamet.ee/docs/pohikaart/%s.zip", params[j]),
          destfile = saveTo, method = "curl", extra = "-L"
        )
      }
      # Unzip
      utils::unzip(saveTo, overwrite = T, exdir = tmp_dir)
      # List of files
      ls <- list.files(path = tmp_dir, pattern = ".dbf")
      ls_long <- list.files(path = tmp_dir, pattern = ".dbf", full.names = T)
      tbl_names <- unlist(strsplit(x = ls, split = ".dbf"))
      # Multi layer
      for (i in 1:length(tbl_names)) {
        print(tbl_names[i])
        conf$table <- tbl_names[i]
        source <- sprintf('"%s" "%s"', tmp_dir, tbl_names[i])
        ## Export to postgis database.
        ruut::copy_shp_to_db(
          dir = tmp_dir, layer = tbl_names[i], conf = conf,
          id = "fid", crs_source = "EPSG:3301", crs_target = "EPSG:4326",
          geometry_type = "POLYGON"
        )
        cat(sprintf(
          "\nShp fail %s kopeeriti POSTGIS andmebaasi %s.%s\n\n",
          ls[i], conf$schema, conf$table
        ))
      }
      # Delete unnecessary files.
      system(sprintf("find %s -type f -not -name '*.zip' -print0 | xargs -0 rm --", tmp_dir))
    }
  }
}