ruut/R/pk_sellest_alustame_db_loomist.R

#' Piirkonna postgis andmebaasi loomine
#'
#' Funktsioon loob piirkonna geojoonest ja nimest postgis andmebaasi. Samas lisatakse faili piir ja piiri piirkast. Ülejäänud funktsioonid kasutavad selle funktsiooni poolt loodud objekti nime ja piiri ega piirikasti pole vaja enam teiste funktsioonide rakendamisel lisada.
#'
#' @importFrom magrittr %>%
#' @importFrom rlang .data
#' @param pk Piirkonna geomeetriline joon.
#' @param obj str Objekti nimi. Edaspidi on oluline ainult see nimi. Piirkonna geomeetrilist joont ei ole vaja edaspidi lisada.
#' @param conf A list() of configuration variables. Default values \code{\link[ruut]{get_config}}.
#' @return Andmebaasi loomine koos kihtidega 'piir' ja 'bb' (boundary box, piirikast).
#' @seealso [sf::st_read()], [sf::write_sf()],[sf::st_transform()],[ruut::pk_sellest_alustame_db_loomist()],[ruut::pk_lisame_ruudustikud()] ,[ruut::pk_lisame_polygoonid()],[ruut::pk_lisame_jooned()],[ruut::pk_lisame_punktid()],[ruut::pk_teisendame_polygoone()],[ruut::pk_teisendame_jooni()],[ruut::pk_teisendame_punkte()]
#' @keywords postgis, boundary box, EPSG:3301
#' @export
#' @examples
#' \dontrun{
#'
#' # read geojson from string:
#' geojson_txt <- paste('{"type":"MultiPoint","coordinates":[[658300,6474800],
#' [658300,6475000],[658700,6476000],[659600,6475000],[659600,6474800],
#' [658300,6474800]]}')
#' x <- sf::read_sf(geojson_txt) %>% sf::st_cast("POLYGON")
#' sf::st_crs(x) <- 3301
#' x
#' sf::st_geometry(x) %>% graphics::plot()
#'
#' obj <- "marja"
#' pk_sellest_alustame_db_loomist(pk = x, obj = obj)
#'
#' # Layers list.
#' ruut::db_schema_tablenames(conf = conf)
#' }
pk_sellest_alustame_db_loomist <-
  function(pk = NULL,
           obj = NULL,
           conf = NULL) {
    ## ----------- argumentide vastavuse kontroll -----------
    if (is.null(pk) || !sf::st_is_valid(pk)) {
      cat("\nPalun kontrolli geomeetrilise kujundi \u00F%igsust.\n")
      # return(NULL)
    }
    if (is.null(obj)) {
      cat("\nPalun sisesta objekti nimi.\n")
      # return(NULL)
    }
    vars <- ajutised_muutujad(pk, obj, conf)
    obj <- vars$obj
    pk <- vars$pk
    conf <- vars$conf
    # attributes(pk)$names <- attributes(pk)$sf_column <- "geom"


    ## --------------------- programmi osa ------------------------

    ## 1. Piirjoone salvestamine
    pk <- sf::st_transform(pk, 3301)
    # Write to gpkg and check validity
    sf::write_sf(
      pk,
      dsn = vars$tmp_gpkg_file,
      layer = vars$conf$gpkg_table,
      driver = "gpkg",
      fid_column_name = "fid",
      delete_dsn = T
    )
    # Geomeetria parandamine
    # ruut::qgis_algorithm_search_by_word("fix")
    algorithm <- "native:fixgeometries"
    input <- vars$tmp_gpkg_file_input_1 # ajutine fail
    output <- vars$tmp_gpkg_file_output_2 # ajutine fail
    str <-
      sprintf("{ 'INPUT' : '%s', 'OUTPUT' : '%s' }", input, output)
    cmd <-
      ruut::construct_qgis_output_result_to_better_format(str = str, algorithm = algorithm)
    system(cmd)
    ## Multipart to singlepart
    # ruut::qgis_algorithm_search_by_word("singlepart")
    algorithm <- "native:multiparttosingleparts"
    input <- vars$tmp_gpkg_file_input_2 # ajutine fail
    output <- vars$tmp_gpkg_file_output_1 # ajutine fail
    str <-  sprintf("{
  'INPUT' : '%s',
  'OUTPUT' : '%s'
}", input, output)
    cmd <-
      ruut::construct_qgis_output_result_to_better_format(str = str, algorithm = algorithm)
    system(cmd)
    # Write to postgis
    ruut::db_create_new_schema(conf = conf)
    # conn <- ruut::db_connect(conf = conf)
    # DBI::dbDisconnect(conn)
    # Eemaldame üleliigsed veerud
    # ruut::qgis_algorithm_search_by_word("Drop")
    algorithm <- "native:deletecolumn"
    input <- vars$tmp_gpkg_file_input_1
    conf$table <- "a00_piir"
    output <-
      ruut::construct_to_gpkg_output_postgres_str(
        conf = conf,
        geometry_field = "geom",
        geometry_type = "Polygon",
        srid = 3301,
        checkPrimaryKeyUnicity = FALSE,
        key = "id"
      )
    cmd <-
      sprintf(
        "qgis_process run %s --COLUMN='fid' --INPUT='%s' --OUTPUT='%s' ",
        algorithm,
        input,
        output
      )
    system(cmd)

    ## 2. Piirikasti salvestamine
    ## konstrueerime EXTENT, HSPACING ja VSPACING väärtused piirikasti konstrueerimiseks.
    pk_attributes <- attributes(pk$geom)
    extent <-
      sprintf(
        "%s,%s,%s,%s [EPSG:3301]",
        round((pk_attributes$bbox["xmin"] / 100), digits = 0) * 100,
        ceiling((pk_attributes$bbox["xmax"] / 100)) * 100,
        round((pk_attributes$bbox["ymin"] / 100), digits = 0) * 100,
        ceiling((pk_attributes$bbox["ymax"] / 100)) * 100
      )
    hspacing <-
      (ceiling((pk_attributes$bbox["xmax"] / 100)) * 100) - (round((pk_attributes$bbox["xmin"] / 100), digits = 0) * 100)
    vspacing <-
      (ceiling((pk_attributes$bbox["ymax"] / 100)) * 100) - (round((pk_attributes$bbox["ymin"] / 100), digits = 0) * 100)
    conf$table <- "a00_piir_bb"
    output <-
      ruut::construct_to_gpkg_output_postgres_str(
        conf = conf,
        geometry_field = "geom",
        geometry_type = NULL,
        srid = 3301,
        checkPrimaryKeyUnicity = FALSE,
        key = "id"
      )
    # ruut::qgis_algorithm_search_by_word(str = "grid")
    algorithm <- "native:creategrid"
    # cat(ruut::qgis_show_help(algorithm = algorithm))
    cmd <-
      sprintf(
        "qgis_process run %s --CRS=\"EPSG:3301\" --EXTENT=\"%s\" --HOVERLAY=0 --HSPACING=%s --TYPE=2 --VOVERLAY=0 --VSPACING=%s --OUTPUT=\"%s\"",
        algorithm,
        extent,
        hspacing,
        vspacing,
        output
      )
    cat(sprintf("\n%s\n", cmd))
    system(cmd)

    ## 3. epk2t piirikasti konstrueerimine ja salvestamine s.t kuhu mahuvad sisse
    ## meie piirkonna epk2t (1x1km) ruudud.

    ## 3.1 Leiame piirikastiga seotud epk2t ruudud
    # ruut::qgis_algorithm_search_by_word(str = "extract")
    algorithm <- "native:extractbylocation"
    # cat(ruut::qgis_show_help(algorithm = algorithm))
    conf$table <- "epk2t_grid"
    conf$schema <- "maaamet"
    input <- ruut::construct_to_gpkg_output_postgres_str(
      conf = conf,
      geometry_type = "Polygon",
      srid = 3301,
      checkPrimaryKeyUnicity = TRUE,
      key = "id",
      geometry_field = "geom"
    )
    conf$table <- "a00_piir_bb"
    conf$schema <- obj
    intersect <-
      ruut::construct_to_gpkg_output_postgres_str(
        conf = conf,
        geometry_type = "Polygon",
        srid = 3301,
        checkPrimaryKeyUnicity = TRUE,
        key = "id"
      )
    output <- vars$tmp_gpkg_file_output_1 # ajutine fail
    str <-
      sprintf(
        "{ 'INPUT' : '%s', 'INTERSECT' : '%s', 'OUTPUT' : '%s', 'PREDICATE' : [5,6] }",
        input,
        intersect,
        output
      )
    cmd <-
      ruut::construct_qgis_output_result_to_better_format(str, algorithm)
    system(cmd)

    ## 3.2 Ajutise faili abil epk2t piirikasti konstrueerimine
    test_layer_obj <-
      sf::read_sf(dsn = vars$tmp_gpkg_file, layer = "test_layer_1")
    pk_attributes <- attributes(test_layer_obj$geom)
    extent <-
      sprintf(
        "%s,%s,%s,%s [EPSG:3301]",
        round((pk_attributes$bbox["xmin"] / 100), digits = 0) * 100,
        ceiling((pk_attributes$bbox["xmax"] / 100)) * 100,
        round((pk_attributes$bbox["ymin"] / 100), digits = 0) * 100,
        ceiling((pk_attributes$bbox["ymax"] / 100)) * 100
      )
    hspacing <-
      (ceiling((pk_attributes$bbox["xmax"] / 100)) * 100) - (round((pk_attributes$bbox["xmin"] / 100), digits = 0) * 100)
    vspacing <-
      (ceiling((pk_attributes$bbox["ymax"] / 100)) * 100) - (round((pk_attributes$bbox["ymin"] / 100), digits = 0) * 100)
    conf$table <- "a00_bb2"
    output <-
      ruut::construct_to_gpkg_output_postgres_str(
        conf = conf,
        geometry_field = "geom",
        geometry_type = NULL,
        srid = 3301,
        checkPrimaryKeyUnicity = FALSE,
        key = "id"
      )
    # ruut::qgis_algorithm_search_by_word(str = "grid")
    algorithm <- "native:creategrid"
    # cat(ruut::qgis_show_help(algorithm = algorithm))
    cmd <-
      sprintf(
        "qgis_process run %s --CRS=\"EPSG:3301\" --EXTENT=\"%s\" --HOVERLAY=0 --HSPACING=%s --TYPE=2 --VOVERLAY=0 --VSPACING=%s --OUTPUT=\"%s\"",
        algorithm,
        extent,
        hspacing,
        vspacing,
        output
      )
    cat(sprintf("\n%s\n", cmd))
    system(cmd)

    ## Layers list
    conf$schema <- obj
    ruut::db_schema_tablenames(conf = conf)
    sf::st_layers(dsn = vars$tmp_gpkg_file)
  }