#!/usr/bin/python3
"""
exportation de données iSpindel JSON vers données CSV
"""
import json, pathlib, csv

class Frame(object):
    """"""

    def __init__(self,fname):
        """"""
        with open(fname,'r') as f:
            self._json = json.load(f)
        self.names = tuple(self._names())
        self.keys = tuple(self._keys())
        self.rows = tuple(self._rows())
    
    def _names(self):
        """"""
        for group in self._json:
            yield group["name"]
    
    def _keys(self):
        """"""
        for i in self._json[0]["data"]:
            yield i["x"]
    
    def _rows(self):
        """"""
        
        def row(key):
            """"""
            for name in self.names:
                yield self.get(name,key)
        
        for k in self.keys:
            yield tuple(row(k))
    
    def get(self,name,key):
        """"""
        for group in self._json:
            if group["name"] == name:
                for value in group["data"]:
                    if value.get("x") == key:
                        return value.get("y")

if __name__ == "__main__":
    here = pathlib.Path.cwd()
    docs = tuple(here.rglob("2.json"))
    if len(docs) == 0:
        print("Aucun fichier JSON ('.json') trouvé.")
    for doc in docs:
        frame = None
        if doc.exists() and doc.stat().st_size > 0:
            frame = Frame(doc)
            with open(doc.with_suffix(".csv"),'w', newline='') as f:
                writer = csv.writer(f,dialect='unix')
                writer.writerow(frame.names)
                writer.writerows(frame.rows)