import re
import time
import importlib
import random
from itertools import count
from math import hypot, floor

from minecraft.networking.types import BlockFace

from protocol.managers import ChunkNotLoadedException

import utils
importlib.reload(utils)
import path
importlib.reload(path)
import blocks
importlib.reload(blocks)
import items
importlib.reload(items)
import mcdata
importlib.reload(mcdata)
import mobs
importlib.reload(mobs)

class CacheItemsStates:
    def idle(self):
        return None

    def init(self):
        self.skip_slots = []
        self.skip_items = []

        num_stacks = self.g.game.count_inventory_slots()
        print('Inventory amount:', num_stacks)
        if num_stacks >= self.g.minimum_cache_slots:
            self.state = self.find_trapped_chests
        else:
            print('Aborting caching, not full')
            self.state = self.cleanup

    def find_trapped_chests(self):
        print('Finding trapped chests...')
        w = self.g.world
        p = utils.pint(self.g.pos)

        self.trapped_chests = w.find_blocks_indexed(p, blocks.TRAPPED_CHEST_IDS)
        print('Found:', self.trapped_chests)
        self.state = self.choose_trapped_chest

    def choose_trapped_chest(self):
        print('Choosing a trapped chest...')
        w = self.g.world
        p = utils.pint(self.g.pos)
        c = self.g.chunks

        if not len(self.trapped_chests):
            print('No trapped chests')
            self.state = self.select_chest
            return

        chest = self.trapped_chests[0]

        tmp = c.get_block_at(*chest)
        c.set_block_at(*chest, blocks.AIR)
        navpath = w.path_to_place(p, chest)
        c.set_block_at(*chest, tmp)

        print('navpath:', navpath)

        if navpath:
            self.g.path = navpath[:-1]
            self.opening = self.g.path[-1]
            self.area = chest
            self.state = self.going_to_trapped_chest
            return
        else:
            self.trapped_chests.pop(0)

    def going_to_trapped_chest(self):
        if utils.pint(self.g.pos) == self.opening:
            self.g.look_at = self.area
            self.state = self.open_chest

    def select_chest(self):
        if self.g.game.select_item([items.CHEST_ID]):
            self.state = self.find_cache_spot
        else:
            print('No chest, aborting')
            self.state = self.cleanup

    def find_cache_spot(self):
        print('Finding a chest spot...')
        w = self.g.world
        p = utils.pint(self.g.pos)

        for area in w.find_cache_areas(p, 100):
            print('Found area:', area)
            if area not in self.bad_areas:
                break
        else: # for
            print('Unable to find area')
            self.state = self.cleanup
            return

        self.area = area
        openings = w.find_cache_openings(self.area)

        for o in openings:
            navpath = w.path_to_place(p, o)
            self.opening = o
            if navpath: break
        else: # for
            print('Unable to get to cache area', self.area)
            self.bad_areas.append(self.area)
            self.state = self.cleanup
            return

        self.g.path = navpath
        self.state = self.going_to_area

    def going_to_area(self):
        if utils.pint(self.g.pos) == self.opening:
            self.g.look_at = self.area
            self.state = self.place_chest

    def place_chest(self):
        self.g.game.place_block(self.area, BlockFace.TOP)
        self.state = self.open_chest

    def open_chest(self):
        print('Opening chest')
        self.g.game.open_container(self.area)
        self.wait_time = 1
        self.state = self.wait

    def wait(self):
        # wait for server to send us chest contents
        if self.wait_time > 0:
            self.wait_time -= utils.TICK
        else:
            self.state = self.move_items

    def move_items(self):
        if self.g.item_lock: return
        w = self.g.window

        if not w:
            print('Didnt get a window, aborting')
            self.state = self.cleanup
            return
        if w.data.window_type != mcdata.SINGLE_CHEST:
            print('Got wrong window, aborting')
            self.state = self.cleanup
            return

        w_info = mcdata.WINDOWS[w.data.window_type]
        w_inventory_slots = w_info.inventory
        w_container_slots = w_info.container

        used_slots = self.g.game.count_window_slots()
        print('used:', used_slots, 'total:', len(w_container_slots))
        if used_slots >= len(w_container_slots):
            print('Container is too full, aborting')
            self.g.game.close_window()
            self.g.look_at = None
            self.state = self.cleanup
            return

        slot_list = []

        for slot_num in w_inventory_slots:
            if slot_num not in w.contents:
                continue

            slot = w.contents[slot_num]

            if not slot.present:
                continue

            if slot.item_id in items.NEEDED_ITEMS:
                continue

            if slot_num in self.skip_slots:
                continue

            slot_list.append((slot_num, slot))

        slot_list.sort(key=lambda x: x[1].item_count, reverse=True)

        for slot_num, slot in slot_list:
            if slot.item_id in items.WANTED_ITEMS and slot.item_id not in self.skip_items:
                print('skipping wanted item', slot)
                self.skip_slots.append(slot_num)
                self.skip_items.append(slot.item_id)
                continue

            print('moving', slot)

            self.g.item_lock = True
            self.g.game.click_window(slot_num, 0, 1, slot)
            return

        print('nothing left to move')
        self.state = self.close_chest

    def close_chest(self):
        print('closing chest')
        self.g.game.close_window()
        if not self.silent:
            self.g.chat.send('cache at ' + str(self.area)[1:-1])
        self.state = self.cleanup

    def cleanup(self):
        self.g.look_at = None
        self.state = self.done

    def done(self):
        # never gets ran, placeholder
        return None

    def __init__(self, global_state):
        self.g = global_state
        self.state = self.idle

        self.silent = False

        self.skip_slots = []
        self.skip_items = []

        self.area = None
        self.opening = None
        self.trapped_chests = []
        self.bad_areas = []
        self.wait_time = 0

    def run(self):
        self.state()