import datetime
import dbus

from i3pystatus import IntervalModule, formatp


class UPower(IntervalModule):

    settings = (
        ("interval", "Refresh interval"),
        ("battery_ident", "The battery identifier (same as setting)"),
        ("alert_percent", "alert percent"),
        ("format_chr", "format when charging"),
        ("color_chr", "color when charging"),
        ("format_dis", "format when discharging"),
        ("color_dis", "color when discharging"),
        ("format_dis_alert", "format when discharging with alert"),
        ("color_dis_alert", "color when discharging with alert"),
        ("format_full", "format when full"),
        ("color_full", "color when full"),
        ("format_dpl", "format when disable"),
        ("color_dpl", "color when disable"),
    )

    interval = 3
    battery_ident = "BAT0"

    format_chr = "{state} {percentage} {time_to_full}"
    format_dis = "{state} {percentage} {time_to_empty}"
    format_full = "{state} {percentage}"
    format_dpl = "{state}"

    color_chr = "#00FF00"
    color_dis = "#FFFF00"
    color_dis_alert = "#FF0000"
    color_full = "#00FF00"
    color_dpl = "#FF0000"

    alert_percent = 20

    def init(self):
        sess = dbus.SystemBus()
        dev = sess.get_object(
            "org.freedesktop.UPower",
            "/org/freedesktop/UPower/devices/battery_%s" % self.battery_ident)
        self.iface = dbus.Interface(
            dev, dbus_interface="org.freedesktop.DBus.Properties")

    def propertie(self, name):
        return self.iface.Get("org.freedesktop.UPower.Device", name)

    def time_to(self, name):
        seconds = int(self.iface.Get("org.freedesktop.UPower.Device", name))
        return datetime.timedelta(seconds=seconds)

    def run(self):
        status = ["CHR", "DIS", "DPL", "FULL"]
        try:
            statep = self.propertie("State")

            percent = int(self.propertie("Percentage"))
            time_to_empty = self.time_to("TimeToEmpty")
            time_to_full = self.time_to("TimeToFull")
        except Exception:
            percent = 0
            statep = 3
            time_to_empty = datetime.timedelta(seconds=0)
            time_to_full = datetime.timedelta(seconds=0)

        if statep == 1 and not time_to_full:
            statep = 4

        state = status[statep - 1] if statep - 1 < len(status) else status[2]
        format = getattr(self, "format_%s" % state.lower())
        color = getattr(self, "color_%s" % state.lower())
        if statep == 2 and percent < self.alert_percent:
            color = self.color_dis_alert
            format = self.format_dis_alert

        fdict = {
            "battery_ident": self.battery_ident,
            "percentage": percent,
            "time_to_full": time_to_full,
            "time_to_empty": time_to_empty,
            "state": state
        }

        self.output = {
            "full_text": formatp(format, **fdict),
            "urgent": False,
            "color": color
        }