"""SC Controller - Profile

Handles mapping profile stored in json file
"""
import json
import logging

from scc.actions import NoAction
from scc.constants import CPAD, DPAD, GYRO, LEFT, RIGHT, RSTICK, STICK, WHOLE, HapticPos, SCButtons
from scc.lib.jsonencoder import JSONEncoder
from scc.menu_data import MenuData
from scc.modifiers import HoldModifier
from scc.parser import TalkingActionParser
from scc.special_actions import MenuAction

log = logging.getLogger("profile")


class Profile:
	# Current profile version. When loading profile file with version lower than this, auto-conversion may happen
	VERSION = 1.4

	LEFT  = LEFT
	RIGHT = RIGHT
	LPAD = SCButtons.LPAD.name
	RPAD = SCButtons.RPAD.name
	CPAD = CPAD
	DPAD = DPAD
	WHOLE = WHOLE
	STICK = STICK
	RSTICK = RSTICK
	GYRO  = GYRO
	X, Y, Z = "X", "Y", "Z"
	STICK_AXES = { X : "lpad_x", Y : "lpad_y" }
	LPAD_AXES  = STICK_AXES
	RPAD_AXES  = { X : "rpad_x", Y : "rpad_y" }
	TRIGGERS   = [ LEFT, RIGHT ]

	def __init__(self, parser):
		self.parser = parser
		self.clear()
		self.filename = None
		# UI-only values
		self.is_template = False
		self.description = ""


	def save(self, filename):
		""" Saves profile into file. Returns self """
		fileobj = open(filename, "w")
		self.save_fileobj(fileobj)
		fileobj.close()
		return self


	def save_fileobj(self, fileobj):
		""" Saves profile into file-like object. Returns self """
		data = {
			"_"				: (self.description if "\n" not in self.description
								else self.description.strip("\n").split("\n")),
			'buttons'		: {},
			'stick'			: self.stick,
			'rstick'		: self.rstick,
			'gyro'			: self.gyro,
			'trigger_left'	: self.triggers[Profile.LEFT],
			'trigger_right'	: self.triggers[Profile.RIGHT],
			"pad_left"		: self.pads[Profile.LEFT],
			"pad_right"		: self.pads[Profile.RIGHT],
			"cpad"			: self.pads[Profile.CPAD],
			"dpad"			: self.pads[Profile.DPAD],
			"menus"			: { id : self.menus[id].encode() for id in self.menus },
			"is_template"	: self.is_template,
			"version"		: Profile.VERSION,
		}

		for i in self.buttons:
			if self.buttons[i]:
				data['buttons'][i.name] = self.buttons[i]

		# Generate & save json
		jstr = Encoder(sort_keys=True, indent=4).encode(data)
		fileobj.write(jstr)
		return self


	def load(self, filename):
		""" Loads profile from file. Returns self """
		fileobj = open(filename, "r")
		self.load_fileobj(fileobj)
		self.filename = filename
		return self


	def load_fileobj(self, fileobj):
		"""
		Loads profile from file-like object.
		Filename attribute is not set, what may cause some trouble if used in GUI.

		Returns self.
		"""
		data = json.loads(fileobj.read())
		# Version
		try:
			version = float(data["version"])
		except:
			version = 0

		# Settings - Description
		# (stored in key "_", so it's serialized on top of JSON file)
		if "_" not in data:
			self.description = ""
		elif type(data["_"]) == list:
			self.description = "\n".join(data["_"])
		else:
			self.description = data["_"]
		# Settings - Template
		self.is_template = bool(data["is_template"]) if "is_template" in data else False

		# Buttons
		self.buttons = {}
		for x in SCButtons:
			self.buttons[x] = self.parser.from_json_data(data["buttons"], x.name)
		# Pressing stick is interpreted as STICKPRESS button,
		# formely called just STICK
		if "STICK" in data["buttons"] and "STICKPRESS" not in data["buttons"]:
			self.buttons[SCButtons.STICKPRESS] = self.parser.from_json_data(
					data["buttons"], "STICK")

		# Stick & gyro
		self.stick = self.parser.from_json_data(data, "stick")
		self.gyro = self.parser.from_json_data(data, "gyro")

		if "triggers" in data:
			# Old format
			# Triggers
			self.triggers = ({
				x : self.parser.from_json_data(data["triggers"], x) for x in Profile.TRIGGERS
			})

			# Pads
			self.pads = {
				Profile.LEFT	: self.parser.from_json_data(data, "left_pad"),
				Profile.RIGHT	: self.parser.from_json_data(data, "right_pad"),
				Profile.CPAD	: NoAction(),
				Profile.DPAD	: NoAction(),
			}

			# Rigth stick
			self.rstick = NoAction()
		else:
			# New format
			# Triggers
			self.triggers = {
				Profile.LEFT	: self.parser.from_json_data(data, "trigger_left"),
				Profile.RIGHT	: self.parser.from_json_data(data, "trigger_right"),
			}

			# Pads
			self.pads = {
				Profile.LEFT	: self.parser.from_json_data(data, "pad_left"),
				Profile.RIGHT	: self.parser.from_json_data(data, "pad_right"),
				Profile.CPAD	: self.parser.from_json_data(data, "cpad"),
				Profile.DPAD	: self.parser.from_json_data(data, "dpad"),
			}

			# Rigth stick
			self.rstick = self.parser.from_json_data(data, "rstick")

		# Menus
		self.menus = {}
		if "menus" in data:
			for id in data["menus"]:
				for invalid_char in ".:/":
					if invalid_char in id:
						raise ValueError("Invalid character '%s' in menu id '%s'" % (invalid_char, id))
				self.menus[id] = MenuData.from_json_data(data["menus"][id], self.parser)

		# Conversion
		self.original_version = version		# TODO: This is temporary
		if version < Profile.VERSION:
			self._convert(version)

		return self


	def clear(self):
		""" Clears all actions and adds default menu action on center button """
		self.buttons = { x : NoAction() for x in SCButtons }
		self.buttons[SCButtons.C] = HoldModifier(
			MenuAction("Default.menu"),
			normalaction = MenuAction("Default.menu")
		)
		self.menus = {}
		self.stick = NoAction()
		self.rstick = NoAction()
		self.is_template = False
		self.triggers = { Profile.LEFT: NoAction(), Profile.RIGHT: NoAction() }
		self.pads = {
			Profile.LEFT: NoAction(),
			Profile.RIGHT: NoAction(),
			Profile.CPAD: NoAction(),
			Profile.DPAD: NoAction(),
		}
		self.gyro = NoAction()


	def get_all_actions(self):
		"""
		Returns generator with every action defined in this profile,
		including actions in menus.
		Recursively walks into macros, dpads and everything else that can have
		nested actions, so both parent and all child actions are yielded.

		May yield NoAction, but shouldn't yield None.

		Used for checks when profile is exported or imported.
		"""
		for action in self.get_actions():
			for i in action.get_all_actions():
				yield i
		for id in self.menus:
			for i in self.menus[id].get_all_actions():
				yield i


	def get_actions(self):
		"""
		As get_all_actions, but returns only root actions, without children,
		and ignores menus.
		"""
		for dct in (self.buttons, self.triggers, self.pads):
			for k in dct:
				yield dct[k]
		for action in (self.stick, self.rstick, self.gyro):
			yield action


	def get_filename(self):
		"""
		Returns filename of last loaded file or None.
		"""
		return self.filename


	def compress(self):
		"""
		Calls compress on every action to throw out some redundant stuff.
		Note that calling save() after compress() will cause data loss.
		"""
		for dct in (self.buttons, self.triggers, self.pads):
			for x in dct:
				dct[x] = dct[x].compress()
		self.rstick = self.rstick.compress()
		self.stick = self.stick.compress()
		self.gyro = self.gyro.compress()
		for menu in self.menus.values():
			menu.compress()


	def _convert(self, from_version):
		""" Performs conversion from older profile version """
		if from_version < 1:
			from scc.modifiers import ModeModifier
			# Add 'display Default.menu if center button is held' for old profiles
			c = self.buttons[SCButtons.C]
			if not c:
				# Nothing set to C button
				self.buttons[SCButtons.C] = HoldModifier(
					MenuAction("Default.menu"),
					normalaction = MenuAction("Default.menu")
				)
			elif hasattr(c, "holdaction") and c.holdaction:
				# Already set to something, don't overwrite it
				pass
			elif c.to_string().startswith("OSK."):
				# Special case, don't touch this either
				pass
			else:
				self.buttons[SCButtons.C] = HoldModifier(
					MenuAction("Default.menu"),
					normalaction = self.buttons[SCButtons.C]
				)
		if from_version < 1.1:
			# Convert old scrolling wheel to new representation
			from scc.modifiers import FeedbackModifier, BallModifier
			from scc.actions import MouseAction, XYAction
			from scc.uinput import Rels
			iswheelaction = ( lambda x : isinstance(x, MouseAction) and
					x.parameters[0] in (Rels.REL_HWHEEL, Rels.REL_WHEEL) )
			for p in (Profile.LEFT, Profile.RIGHT):
				a, feedback = self.pads[p], None
				if isinstance(a, FeedbackModifier):
					feedback = a.haptic.get_position()
					a = a.action
				if isinstance(a, XYAction):
					if iswheelaction(a.x) or iswheelaction(a.y):
						n = BallModifier(XYAction(a.x, a.y))
						if feedback is not None:
							n = FeedbackModifier(feedback, 4096, 16, n)
						self.pads[p] = n
						log.info("Converted %s to %s", a.to_string(), n.to_string())
		if from_version < 1.2:
			# Convert old trigger settings that were done with ButtonAction
			# to new TriggerAction
			from scc.constants import TRIGGER_HALF, TRIGGER_MAX, TRIGGER_CLICK
			from scc.actions import ButtonAction, TriggerAction, MultiAction
			from scc.uinput import Keys
			for p in (Profile.LEFT, Profile.RIGHT):
				if isinstance(self.triggers[p], ButtonAction):
					buttons, numbers = [], []
					n = None
					# There were one or two keys and zero to two numeric
					# parameters for old button action
					for param in self.triggers[p].parameters:
						if param in Keys:
							buttons.append(param)
						elif type(param) in (int, float):
							numbers.append(int(param))
					if len(numbers) == 0:
						# Trigger range was not specified, assume defaults
						numbers = ( TRIGGER_HALF, TRIGGER_CLICK )
					elif len(numbers) == 1:
						# Only lower range was specified, add default upper range
						numbers.append(TRIGGER_CLICK)
					if len(buttons) == 1:
						# If only one button was set, trigger should work like
						# one big button
						n = TriggerAction(numbers[0], ButtonAction(buttons[0]))
					elif len(buttons) == 2:
						# Both buttons were set
						n = MultiAction(
							TriggerAction(numbers[0], numbers[1], ButtonAction(buttons[0])),
							TriggerAction(numbers[1], TRIGGER_MAX, ButtonAction(buttons[1])),
						)

					if n:
						log.info("Converted %s to %s",
							self.triggers[p].to_string(), n.to_string())
						self.triggers[p] = n
		if from_version < 1.3:
			# Action format completly changed in v0.4, but profile format is same.
			pass

class Encoder(JSONEncoder):
	def default(self, obj):
		#if type(obj) in (list, tuple):
		#	return basestring("[" + ", ".join(self.encode(x) for x in obj) + " ]")
		if hasattr(obj, "encode"):
			return obj.encode()
		return JSONEncoder.default(self, obj)
