#!/usr/bin/python3
"""
extracteur de données iSpindel JSON entreposées par Little Bock en HTML
"""
import json, pathlib
try:
    import lxml.html as LX
except ModuleNotFoundError:
    import sys
    sys.exit("Le module 'lxml' est nécessaire.\n\thttp://pypi.org/lxml")

def jsproc(data):
    """supprime les données inutiles d'une série"""
    unwanted = ("color","opacity","yAxis","dashStyle", "tooltip",)
    if data.get("data"):
        for u in unwanted:
            if u in data.keys():
                if u == "tooltip":
                    tt = data.get(u)
                    suffix = tt.get("valueSuffix")
                    if suffix: data.update({
                        "name": " ".join([data["name"], suffix])
                    })
                del(data[u])
        return data

def hproc(path_in):
    """traite un document HTML"""
    data1, data2 = None, []
    h = LX.parse(str(path_in))
    x = h.xpath("//*[@id='fermentation_log_chart']")
    if x: data1 = x[0].get('data-chart-options')
    if data1:
        for i in json.loads(data1).pop('series'):
            data = jsproc(i)
            if data: data2.append(data)
    if len(data2) > 0:
        path_out = path_in.with_suffix('.json')
        with open(path_out,'w') as f:
            f.write(json.dumps(data2,
                sort_keys=False, ensure_ascii=False, indent=2))
            print(f"INFO: {path_in.name} >> {path_out.name}")

if __name__ == "__main__":
    here = pathlib.Path.cwd()
    hdocs = tuple(here.rglob("*.html"))
    if len(hdocs) == 0:
        print("Aucun fichier HTML ('.html') trouvé.")
    for i in hdocs:
        if i.exists() and i.stat().st_size > 0:
            hproc(i)