#!/usr/bin/env python3

import json
import os


def graph_all(recipes: dict) -> None:
    print("digraph G {")
    for result, method in recipes.items():
        for i in method[0]["input"]:
            print(f"{i} -> {result}")
    print("}")


def load_recipes(recipe_root: str) -> dict:
    recipes = dict()

    for dirname, dirs, files in os.walk(recipe_root):
        for f in files:
            path = os.path.join(dirname, f)
            name, _ = os.path.splitext(f)
            with open(path, 'r') as src:
                variations = json.load(src)

            recipes[name] = variations

    return recipes


if __name__ == '__main__':
    root = os.path.dirname(__file__)
    recipe_root = os.path.join(root, 'data', 'recipes')
    graph_all(load_recipes(recipe_root))