import jsonlines
import os
from twisted.python import log
from pprint import pprint


class GameData(object):
    def __init__(self, usergame):
        # Construct the GameData storage object
        self.usergame = usergame
        self.warps = {}
        self.ports = {}

    def storage_filename(self):
        user, game = self.usergame
        return "{0}_{1}.json".format(user.lower(), game.upper())

    def display(self):
        pprint(self.warps)
        pprint(self.ports)

    def save(self, *_):
        filename = self.storage_filename()

        with jsonlines.open(filename, mode="w") as writer:
            for warp, sectors in self.warps.items():
                log.msg("save:", warp, sectors)
                sects = list(sectors)  # make a list
                w = {"warp": {warp: sects}}
                log.msg(w)
                writer.write(w)
                yield
            for sector, port in self.ports.items():
                p = {"port": {sector: port}}
                writer.write(p)
                yield

    def load(self):
        filename = self.storage_filename()

        self.warps = {}
        self.ports = {}
        if os.path.exists(filename):
            # Load it
            with jsonlines.open(filename) as reader:
                for obj in reader:
                    if "warp" in obj:
                        for s, w in obj["warp"].items():
                            log.msg(s, w)
                            self.warps[int(s)] = set(w)
                        # self.warps.update(obj["warp"])
                    if "port" in obj:
                        for s, p in obj["port"].items():
                            self.ports[int(s)] = p
                        # self.ports.update(obj["port"])
                    yield
        log.msg("Loaded {0} {1}/{2}".format(filename, len(self.ports), len(self.warps)))

    def warp_to(self, source, *dest):
        """ connect sector source to destination. 
        
        Note:  There's a "bug" with json, keys must be strings!
        """
        if source not in self.warps:
            self.warps[source] = set()

        for d in dest:
            if d not in self.warps[source]:
                self.warps[source].add(d)