import json
import logging
from typing import List

import matplotlib.pyplot as plt
import numpy as np

from . import Render
from .. import Result, LocomotionActionAnalyzer

log = logging.getLogger(__name__)

def default(item):
	return item
def sort(item):
	return item[0]
def sort_sum(item):
	return sum(item)

def plot(results: [[int]], ylabel: str, title: str, legend: (str,) = ("Locomotion", "Action")):
	size = len(results)
	data = list(zip(*results))
	ind = np.arange(size)
	width = 0.85
	loc = plt.bar(ind, data[0], width=width, color="red")
	act = plt.bar(ind, data[1], width=width, bottom=data[0], color="green")
	# ratio = plt.plot([1,2,3],[raw['locomotion_action_ratio'],raw['locomotion_relative'],raw['action_relative']], label="ratio", marker=".")
	# ratio = plt.plot(ind, data[4], label="ratio", marker=".")
	plt.ylabel(ylabel)
	plt.title(title)
	plt.xlabel("sessions")

	# plt.xticks(ind, log_ids)
	plt.xticks(ind, [""] * size)
	# plt.yticks(np.arange(0,1.1,0.10))
	plt.legend((loc[0], act[0]), legend)
	plt.show()


def plot_line(results: [[int]], ylabel="Ratio", title="Locomotion/Action "):
	size = len(results)
	data = list(zip(*results))
	ind = np.arange(size)
	ratio = plt.plot(ind, data[0], label="ratio", marker=".")
	plt.ylabel(ylabel)
	plt.title(title)
	plt.xticks(ind, [""] * size)
	plt.show()


def filter_results(raw_results: [Result], keys, sort=default) -> [[int]]:
	results = []
	for result in raw_results:
		raw = result.get()
		results.append([raw[k] for k in keys])
	results = sorted(results,key=sort)
	return results


class LocomotionActionRender(Render):
	result_types = [LocomotionActionAnalyzer]


class LocomotionActionAbsoluteRender(LocomotionActionRender):
	def render(self, results: List[Result], name=None):
		results = filter_results(self.filter(results), ['locomotion_sum', 'action_sum'])
		plot(results, "time", "abs loc/action")


class LocomotionActionRelativeRender(LocomotionActionRender):
	def render(self, results: List[Result], name=None):
		results = filter_results(self.filter(results), ['locomotion_relative', 'action_relative'])
		plot(results, "fraction of time", "rel loc/action")


class LocomotionActionRatioRender(LocomotionActionRender):
	def render(self, results: List[Result], name=None):
		results = filter_results(self.filter(results), ['locomotion_action_ratio'])
		plot_line(results, ylabel="Ratio", title="Locomotion/Action Ratio")

class LocomotionActionRatioHistRender(LocomotionActionRender):
	def render(self, results: List[Result]):
		results = filter_results(self.filter(results), ['locomotion_action_ratio'])
		plt.title("locomotion/action")
		plt.xlabel("ratio")
		plt.ylabel("frequency")
		n, bins, patches = plt.hist([results], bins=len(results))
		plt.show()