import csv
import json
import os


_root = os.path.dirname(__file__)


def _main():
    dingbats = _read_dingbats()

    _write_java_fragment(dingbats)
    _write_javascript_module(dingbats)
    _write_python_module(dingbats)


def _read_dingbats():
    with open(os.path.join(_root, "dingbats.csv")) as dingbats_file:
        dingbat_reader = csv.DictReader(dingbats_file)

        return list(dingbat_reader)


def _write_java_fragment(dingbats):
    with _open_text_file("java/dingbats.java") as java_file:
        java_file.write("// Generated by https://github.com/mwilliamson/dingbat-to-unicode\n")
        java_file.write("private static final Map<String, Integer> dingbats = new Map<>();\n")
        java_file.write("static {\n")

        for dingbat in dingbats:
            java_file.write("    dingbats.put(")
            java_file.write(json.dumps(dingbat["Typeface name"] + "_" + dingbat["Dingbat dec"]))
            java_file.write(", ")
            java_file.write(str(int(dingbat["Unicode dec"])))
            java_file.write(");\n")

        java_file.write("}\n")



def _write_javascript_module(dingbats):
    dingbats_by_typeface_name = {}

    for dingbat in dingbats:
        typeface_name = dingbat["Typeface name"]
        dingbat_code_point = int(dingbat["Dingbat dec"])
        unicode_code_point = int(dingbat["Unicode dec"])
        dingbats_by_typeface_name.setdefault(typeface_name, {})[dingbat_code_point] = unicode_code_point

    with _open_text_file("js/src/dingbats.ts") as typescript_file:
        typescript_file.write("const dingbats: {[typefaceName: string]: {[dingbatCodePoint: string]: number}} = {\n")

        for typeface_name, dingbat_to_unicode in dingbats_by_typeface_name.items():
            typescript_file.write(" " * 4)
            json.dump(typeface_name.upper(), typescript_file)
            typescript_file.write(": {\n")

            for dingbat_code_point, unicode_code_point in dingbat_to_unicode.items():
                typescript_file.write(" " * 8)
                typescript_file.write(str(dingbat_code_point))
                typescript_file.write(": ")
                typescript_file.write(str(unicode_code_point))
                typescript_file.write(",\n")

            typescript_file.write(" " * 4)
            typescript_file.write("},\n")

        typescript_file.write("};\n")
        typescript_file.write("export default dingbats;\n");


def _write_python_module(dingbats):
    with _open_text_file("python/dingbats.py") as python_file:
        python_file.write("# Generated by https://github.com/mwilliamson/dingbat-to-unicode\n\n")
        python_file.write("dingbats = {\n")

        for dingbat in dingbats:
            python_file.write("    ")
            python_file.write(repr((dingbat["Typeface name"], int(dingbat["Dingbat dec"]))))
            python_file.write(": ")
            python_file.write(repr(int(dingbat["Unicode dec"])))
            python_file.write(",\n")

        python_file.write("}\n")


def _open_text_file(path):
    full_path = os.path.join(_root, path)
    os.makedirs(os.path.dirname(full_path), exist_ok=True)
    return open(full_path, "wt", encoding="utf-8")


if __name__ == "__main__":
    _main()