def _prepare_tiles()

in python-package/lets_plot/plot/geom_livemap_.py [0:0]

• 65 lines of code
• 19 McCabe index (conditional complexity)

def _prepare_tiles(tiles: Optional[Union[str, dict]]) -> Optional[dict]:
    if isinstance(tiles, str):
        return {
            OPTIONS_MAPTILES_KIND: TILES_RASTER_ZXY,
            OPTIONS_MAPTILES_URL: tiles
        }

    if isinstance(tiles, dict):
        if tiles.get(MAPTILES_KIND) == TILES_RASTER_ZXY:
            _warn_deprecated_tiles(tiles)
            return {
                OPTIONS_MAPTILES_KIND: TILES_RASTER_ZXY,
                OPTIONS_MAPTILES_URL: tiles[MAPTILES_URL],
                OPTIONS_MAPTILES_ATTRIBUTION: tiles[MAPTILES_ATTRIBUTION],
                OPTIONS_MAPTILES_MIN_ZOOM: tiles[MAPTILES_MIN_ZOOM],
                OPTIONS_MAPTILES_MAX_ZOOM: tiles[MAPTILES_MAX_ZOOM],
            }
        elif tiles.get(MAPTILES_KIND) == TILES_VECTOR_LETS_PLOT:
            return {
                OPTIONS_MAPTILES_KIND: TILES_VECTOR_LETS_PLOT,
                OPTIONS_MAPTILES_URL: tiles[MAPTILES_URL],
                OPTIONS_MAPTILES_THEME: tiles[MAPTILES_THEME],
                OPTIONS_MAPTILES_ATTRIBUTION: tiles[MAPTILES_ATTRIBUTION],
            }
        elif tiles.get(MAPTILES_KIND) == TILES_SOLID:
            return {
                OPTIONS_MAPTILES_KIND: TILES_SOLID,
                OPTIONS_MAPTILES_FILL_COLOR: tiles[MAPTILES_SOLID_FILL_COLOR]
            }
        elif tiles.get(MAPTILES_KIND) == TILES_CHESSBOARD:
            return {
                OPTIONS_MAPTILES_KIND: TILES_CHESSBOARD
            }
        else:
            raise ValueError("Unsupported 'tiles' kind: " + tiles.get(MAPTILES_KIND))

    if tiles is not None:
        raise ValueError("Unsupported 'tiles' parameter type: " + type(tiles))

    # tiles are not set for this livemap - try to get global tiles config
    if has_global_value(MAPTILES_KIND):
        if not has_global_value(MAPTILES_URL):
            raise ValueError('URL for tiles service is not set')

        if get_global_val(MAPTILES_KIND) == TILES_RASTER_ZXY:
            _warn_deprecated_tiles(None)
            return {
                OPTIONS_MAPTILES_KIND: TILES_RASTER_ZXY,
                OPTIONS_MAPTILES_URL: get_global_val(MAPTILES_URL),
                OPTIONS_MAPTILES_ATTRIBUTION: get_global_val(MAPTILES_ATTRIBUTION) if has_global_value(
                    MAPTILES_ATTRIBUTION) else None,
                OPTIONS_MAPTILES_MIN_ZOOM: get_global_val(MAPTILES_MIN_ZOOM) if has_global_value(
                    MAPTILES_MIN_ZOOM) else None,
                OPTIONS_MAPTILES_MAX_ZOOM: get_global_val(MAPTILES_MAX_ZOOM) if has_global_value(
                    MAPTILES_MAX_ZOOM) else None,
            }

        if get_global_val(MAPTILES_KIND) == TILES_VECTOR_LETS_PLOT:
            return {
                OPTIONS_MAPTILES_KIND: TILES_VECTOR_LETS_PLOT,
                OPTIONS_MAPTILES_URL: get_global_val(MAPTILES_URL),
                OPTIONS_MAPTILES_THEME: get_global_val(MAPTILES_THEME) if has_global_value(MAPTILES_THEME) else None,
                OPTIONS_MAPTILES_ATTRIBUTION: get_global_val(MAPTILES_ATTRIBUTION) if has_global_value(
                    MAPTILES_ATTRIBUTION) else None,
            }

        if get_global_val(MAPTILES_KIND) == TILES_SOLID:
            return {
                OPTIONS_MAPTILES_KIND: TILES_SOLID,
                OPTIONS_MAPTILES_FILL_COLOR: get_global_val(MAPTILES_SOLID_FILL_COLOR),
            }

    raise ValueError('Tile provider is not set.')