# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
# SPDX-License-Identifier: GPL-3.0-or-later

import unittest

from squirrelbattle.entities.items import Bomb, Heart, Item
from squirrelbattle.entities.monsters import Tiger, Hedgehog, Rabbit, TeddyBear
from squirrelbattle.entities.player import Player
from squirrelbattle.interfaces import Entity, Map
from squirrelbattle.resources import ResourceManager


class TestEntities(unittest.TestCase):
    def setUp(self) -> None:
        """
        Load example map that can be used in tests.
        """
        self.map = Map.load(ResourceManager.get_asset_path("example_map.txt"))
        self.player = Player()
        self.map.add_entity(self.player)
        self.player.move(self.map.start_y, self.map.start_x)

    def test_basic_entities(self) -> None:
        """
        Test some random stuff with basic entities.
        """
        entity = Entity()
        entity.move(42, 64)
        self.assertEqual(entity.y, 42)
        self.assertEqual(entity.x, 64)
        self.assertIsNone(entity.act(self.map))

        other_entity = Entity()
        other_entity.move(45, 68)
        self.assertEqual(entity.distance_squared(other_entity), 25)
        self.assertEqual(entity.distance(other_entity), 5)

    def test_fighting_entities(self) -> None:
        """
        Test some random stuff with fighting entities.
        """
        entity = Tiger()
        self.map.add_entity(entity)
        self.assertEqual(entity.maxhealth, 20)
        self.assertEqual(entity.maxhealth, entity.health)
        self.assertEqual(entity.strength, 2)
        for _ in range(9):
            self.assertEqual(entity.hit(entity),
                             "Tiger hits tiger. Tiger takes 2 damage.")
            self.assertFalse(entity.dead)
        self.assertEqual(entity.hit(entity), "Tiger hits tiger. "
                         + "Tiger takes 2 damage. Tiger dies.")
        self.assertTrue(entity.dead)

        entity = Rabbit()
        self.map.add_entity(entity)
        entity.move(15, 44)
        # Move randomly
        self.map.tick()
        self.assertFalse(entity.y == 15 and entity.x == 44)

        # Move to the player
        entity.move(3, 6)
        self.map.tick()
        self.assertTrue(entity.y == 2 and entity.x == 6)

        # Rabbit should fight
        old_health = self.player.health
        self.map.tick()
        self.assertTrue(entity.y == 2 and entity.x == 6)
        self.assertEqual(old_health - entity.strength, self.player.health)
        self.assertEqual(self.map.logs.messages[-1],
                         f"{entity.name.capitalize()} hits {self.player.name}. \
{self.player.name.capitalize()} takes {entity.strength} damage.")

        # Fight the rabbit
        old_health = entity.health
        self.player.move_down()
        self.assertEqual(entity.health, old_health - self.player.strength)
        self.assertFalse(entity.dead)
        old_health = entity.health
        self.player.move_down()
        self.assertEqual(entity.health, old_health - self.player.strength)
        self.assertFalse(entity.dead)
        old_health = entity.health
        self.player.move_down()
        self.assertEqual(entity.health, old_health - self.player.strength)
        self.assertTrue(entity.dead)
        self.assertGreaterEqual(self.player.current_xp, 3)

    def test_items(self) -> None:
        """
        Test some random stuff with items.
        """
        item = Item()
        self.map.add_entity(item)
        self.assertFalse(item.held)
        item.hold(self.player)
        self.assertTrue(item.held)
        item.drop()
        self.assertEqual(item.y, 1)
        self.assertEqual(item.x, 6)

        # Pick up item
        self.player.move_left()
        self.player.move_right()
        self.assertTrue(item.held)
        self.assertEqual(item.held_by, self.player)
        self.assertIn(item, self.player.inventory)
        self.assertNotIn(item, self.map.entities)

    def test_bombs(self) -> None:
        """
        Test some random stuff with bombs.
        """
        item = Bomb()
        hedgehog = Hedgehog()
        teddy_bear = TeddyBear()
        self.map.add_entity(item)
        self.map.add_entity(hedgehog)
        self.map.add_entity(teddy_bear)
        hedgehog.health = 2
        teddy_bear.health = 2
        hedgehog.move(41, 42)
        teddy_bear.move(42, 41)
        item.act(self.map)
        self.assertFalse(hedgehog.dead)
        self.assertFalse(teddy_bear.dead)
        self.player.move(42, 42)
        item.hold(self.player)
        item.use()
        self.assertEqual(item.y, 42)
        self.assertEqual(item.x, 42)
        # Wait for the explosion
        for ignored in range(5):
            item.act(self.map)
        self.assertTrue(hedgehog.dead)
        self.assertTrue(teddy_bear.dead)
        bomb_state = item.save_state()
        self.assertEqual(bomb_state["damage"], item.damage)

    def test_hearts(self) -> None:
        """
        Test some random stuff with hearts.
        """
        item = Heart()
        self.map.add_entity(item)
        item.move(2, 6)
        self.player.health -= 2 * item.healing
        self.player.move_down()
        self.assertNotIn(item, self.map.entities)
        self.assertEqual(self.player.health,
                         self.player.maxhealth - item.healing)
        heart_state = item.save_state()
        self.assertEqual(heart_state["healing"], item.healing)

    def test_players(self) -> None:
        """
        Test some random stuff with players.
        """
        player = Player()
        self.map.add_entity(player)
        player.move(1, 6)
        self.assertEqual(player.strength, 5)
        self.assertEqual(player.health, player.maxhealth)
        self.assertEqual(player.maxhealth, 20)

        # Test movements and ensure that collisions are working
        self.assertFalse(player.move_up())
        self.assertTrue(player.move_left())
        self.assertFalse(player.move_left())
        for _ in range(8):
            self.assertTrue(player.move_down())
        self.assertFalse(player.move_down())
        self.assertTrue(player.move_right())
        self.assertTrue(player.move_right())
        self.assertTrue(player.move_right())
        self.assertFalse(player.move_right())
        self.assertTrue(player.move_down())
        self.assertTrue(player.move_down())

        player.add_xp(70)
        self.assertEqual(player.current_xp, 10)
        self.assertEqual(player.max_xp, 40)
        self.assertEqual(player.level, 4)

        player_state = player.save_state()
        self.assertEqual(player_state["current_xp"], 10)