import os
import json
import glob

def getpath():
    return os.path.dirname("{}/themes/".format(os.path.dirname(os.path.realpath(__file__))))

def themes():
    d = getpath()
    return [ os.path.basename(f).replace(".json", "") for f in glob.iglob("{}/*.json".format(d)) ]

class Theme:
    # TODO: cycle handling
    def __init__(self, config):
        with open("{}/{}.json".format(getpath(), config.theme())) as f:
            self._data = json.load(f)
        self._defaults = self._data.get("defaults", {})
        self._cycle = {}

    def begin(self):
        pass

    def next_widget(self):
        pass

    def prefix(self, widget):
        pass

    def suffix(self, widget):
        pass

    def color(self, widget):
        result = self._get(widget, "fg")
        if widget.warning():
            result = self._get(widget, "fg-warning")
        if widget.critical():
            result = self._get(widget, "fg-critical")
        return result

    def background(self, widget):
        pass

    def separator(self, widget):
        pass

    def separator_color(self, widget):
        pass

    def separator_background(self, widget):
        pass

    def default_separators(self, widget):
        pass

    def separator_block_width(self, widget):
        pass

    def _get(self, widget, name):
        module = widget.module()
        state = widget.state()
        module_theme = self._data.get(module, {})
        state_theme = module_theme.get("states", {}).get(state, {})

        value = None
        value = self._defaults.get(name, value)
        value = self._cycle.get(name, value)
        value = module_theme.get(name, value)
        value = state_theme.get(name, value)

        if type(value) is list:
            # if the value is a list, cycle through it
            # TODO
            pass

        return value


#class Theme:
#    _cycle_index = 0
#    _cycle = None
#    def __init__(self, config):
#        self._data = None
#        path = os.path.dirname(os.path.realpath(__file__))
#        with open("{}/{}.json".format(getpath(), config.theme())) as f:
#            self._data = json.load(f)
#        self._defaults = self._data.get("defaults", {})
#        self._cycle = self._defaults.get("cycle", [])
#        self._modules = {}
#
#        self.reset()
#
#    def _gettheme(self, obj, key):
#        module = obj.__module__.split(".")[-1]
#        module_theme = self._data.get(module, {})
#
#        value = getattr(obj, key)() if hasattr(obj, key) else None
#        value = self._defaults.get(key, value)
#        if len(self._cycle) > 0:
#            value = self._defaults["cycle"][self._cycle_index].get(key, value)
#        value = module_theme.get(key, value)
#
#        if hasattr(obj, "state"):
#            state = getattr(obj, "state")()
#            state_theme = module_theme.get("states", {}).get(state, {})
#
#            value = state_theme.get(key, value)
#
#        if type(value) is list:
#            # cycle through the values
#            if not obj in self._modules:
#                self._modules[obj] = { "idx": 0 }
#            else:
#                self._modules[obj]["idx"] += 1
#                if self._modules[obj]["idx"] >= len(value):
#                    self._modules[obj]["idx"] = 0
#            value = value[self._modules[obj]["idx"]]
#
#        return value
#
#    def reset(self):
#        self._cycle_index = 0
#        self._previous_background = None
#        self._background = None
#
#    def urgent(self, obj):
#        self._gettheme(obj, "urgent")
#
#    def next(self):
#        self._cycle_index += 1
#        self._previous_background = self._background
#        if self._cycle_index >= len(self._cycle):
#            self._cycle_index = 0
#
#    def color(self, obj):
#        fg = None
#        if obj.warning():
#            fg = self._gettheme(obj, "fg-warning")
#        if obj.critical():
#            fg = self._gettheme(obj, "fg-critical")
#        if fg == None:
#            fg = self._gettheme(obj, "fg")
#        return fg
#
#    def background(self, obj):
#        self._background = None
#        if obj.warning():
#            self._background = self._gettheme(obj, "bg-warning")
#        if obj.critical():
#            self._background = self._gettheme(obj, "bg-critical")
#
#        if self._background == None:
#            self._background = self._gettheme(obj, "bg")
#
#        return self._background
#
#    def previous_background(self):
#        return self._previous_background
#
#    def separator(self, obj):
#        return self._gettheme(obj, "separator")
#
#    def default_separators(self, obj):
#        return self._gettheme(obj, "default_separators")
#
#    def prefix(self, obj):
#        return self._gettheme(obj, "prefix")
#
#    def suffix(self, obj):
#        return self._gettheme(obj, "suffix")

# vim: tabstop=8 expandtab shiftwidth=4 softtabstop=4