Makes a geojson-dashboard config.json file from an input geojson file.

make_config.py

# -*- coding: utf-8 -*-
"""
Makes a geojson-dashboard config.json file from an input geojson file.
Author: Garin Wally; Aug 2017

Use:
    > python make_config.py us_bounds.json
"""

import os
import sys
import json
from collections import OrderedDict


config = """
    var config = {
      geojson: "<file.geojson>",
      title: "<App Title>",
      layerName: "<layer name>",
      hoverProperty: "<hover fieldname>",
      sortProperty: "<inital sorting field>",
      sortOrder: "desc"
    };
    """.strip()

prop_template = """{
  value: "{field_name}",
  label: "{field_name}",
  table: {
      visible: true,
      sortable: true
      },
  filter: {
      type: "{data_type}"//,
      //input: "checkbox",
      //vertical: true,
      //multiple: true,
      //operators: ["in", "not_in", "equal", "not_equal"],
      //values: []
  },
  info: true}"""


types = {
    "int": "integer",
    "float": "float",  # TODO: or real
    }


def map_str_type(s):
    if s is None:
        return "string"
    elif type(s) in [str, unicode]:
        if s.startswith("0") and s.isdigit():
            return "string"
        elif s.isdigit():
            return "integer"
        elif s.replace(".", "").isdigit():
            return "float"  # TODO: or real?
        else:
            return "string"
    else:
        try:
            return types[type(s).__name__]
        except:
            return "string"


def get_json_fields(json_file):
    with open(json_file, "r") as f:
        json_content = json.load(f)

    feature1 = json_content["features"][0]
    fields = OrderedDict()

    for k, v in feature1["properties"].items():
        fields[k] = map_str_type(v)

    return fields.items()


def make_config(geojson):
    """Makes a geojson-dashboard config file."""
    dlist = []
    for fname, dtype in get_json_fields(geojson):
        dlist.append(
            prop_template.replace("{field_name}", fname
                                  ).replace("{data_type}", dtype))

    prop = "var properties = [" + ",\n\n".join(dlist) + "\n];"

    with open("config.json", "w") as f:
        f.write(config)
        f.write("\n\n")
        f.write(prop)
    return


def main():
    if len(sys.argv) > 1:
        geojson = sys.argv[1]
    else:
        geojson = raw_input("Enter geojson filepath: ")
    if os.path.exists(geojson):
        try:
            make_config(geojson)
            print("Complete.\n")
        except Exception as e:
            print(e)
    else:
        print("Failed: Input does not exist.\n")


if __name__ == "__main__":
    main()