#' Teeregistri WFS kihid
#'
#' Eesti avaandmete \url{https://avaandmed.eesti.ee/datasets?emsId=35} teabevärava kaudu teederegistri WFS (Web Feature Service) andmete eksportimine postgisandmebaasi. WFS andmestiku kirjeldus: \url{https://teeregister-api.mnt.ee/teenus/wfs?request=GetCapabilities&service=WFS}
#'
#' @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, WFS, OSM
#' @export
#' @examples
#' \dontrun{
#'
#' conf <- ruut::get_config()
#' teeregister_wfs(conf = conf)
#' }
teeregister_wfs <- 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) {
    # Export to postgis
    if (is.null(conf)) {
      conf <- ruut::get_config()
      conf$schema <- "teeregister_wfs"
    }
    # New schema
    ruut::db_create_new_schema(conf = conf)
    ## Teeregistri avaandmete kihtide lugemine
    wfs_list <- loe_teeregistri_wfs_kihid()
    layer_list <- wfs_list[, "layer"]
    ## Loe instaleeritud tabelid andmebaasis
    installed_tables <- ruut::db_schema_tablenames(conf = conf)
    pg <- ruut::construct_ogr2ogr_PG_connect_str(conf = conf)
    ## WFS andmekogu
    wfs <- "\"WFS:https://teeregister-api.mnt.ee/teenus/wfs\""
    # Andmete kopeerimine andmebaasi
    for (i in 1:length(layer_list)) {
      wfs_layer <- layer_list[i]
      conf$table <- tolower(gsub("ms:", "", wfs_layer))
      if (!conf$table %in% installed_tables) {
        cat(sprintf("\n-----------------\nKihi \"%s\" kopeerimine andmebaasi.\n", wfs_layer))
        q <- sprintf(
          "ogr2ogr -progress --config PG_USE_COPY YES -f PostgreSQL %s -lco DIM=2 %s %s -overwrite -nlt GEOMETRY -lco GEOMETRY_NAME=geom -lco FID=id -nln %s.%s -a_srs EPSG:3301 -nlt PROMOTE_TO_MULTI ",
          pg, wfs, wfs_layer, conf$schema, conf$table
        ) #-s_srs EPSG:3301 -t_srs EPSG:3301
        cat(sprintf("\n%s\n", q))
        system(q)
        cat(sprintf("\n%s\n-------------\n", "Kopeerimine l\U00F5petati"))
      }
    }
  }
}