JSON to HTML python script.

json2html.py

from typing import Dict, List, Optional, Union


class HTMLTag:
    def __init__(self, name: str, data: Union[List["HTMLTag"], any], params: Optional[Dict] = None):
        self.name = name
        self.data = data
        self.params = params

    def __str_params(self):
        string = "" if self.params is None else " "
        if string:
            for name, value in self.params.items():
                string += f"{name}=\"{value}\""
        return string

    def __str__(self) -> str:
        params = self.__str_params()

        if isinstance(self.data, list):
            string = f"<{self.name}{params}>\n"

            for children in self.data:
                string += str(children)

            string += f"</{self.name}>\n"
            return string

        return f"<{self.name}{params}>{self.data}</{self.name}>\n"


def __parse_tag(tag: Dict) -> List:
    data = []
    for _name, _data in tag.items():
        if isinstance(_data, dict):
            parsed_tag = HTMLTag(_name, __parse_tag(_data))
        elif isinstance(_data, str):
            parsed_tag = HTMLTag(_name, _data)
        else:
            parsed_params, parsed_container = _data[0], _data[1]
            if isinstance(parsed_container, Dict):  # !str
                parsed_container = __parse_tag(parsed_container)
            parsed_tag = HTMLTag(_name, parsed_container, parsed_params)
        data.append(parsed_tag)
    return data


def convert(json: Dict) -> str:
    data = __parse_tag(json)
    return "".join([str(tag) for tag in data])

# SAMPLE JSON for json2html.convert()

#{
#    "html": [{"lang": "en"}, {
#        "head": {
#            "title": "Hello world!"
#        },
#        "body": {
#            "h1": [{"style": "color: red;"}, "Hello world from HTML+CSS!"],
#            "script": [{"type": "text/javascript"}, "alert('Hello world from JS!')"]
#        }
#    }]
#}


# CLI use.
#import sys
#import json
#import json2html
#def cli(argc, argv):
#    if argc <= 2:
#        return print("Please enter both input and output filepaths!")
#    path_input, path_output = argv[1], argv[2]
#    with open(path_input, "r") as input_fp:
#        input_json = json.load(input_fp)
#    output_html = json2html.convert(input_json)
#    with open(path_output, "w") as output_fp:
#        output_fp.write(output_html)
#    return print("Completed!")
#
#if __name__ == "__main__":
#    cli(len(sys.argv), sys.argv)