import unittest
from munch import Munch

from mosfet.info import items
from mosfet.jobs.grab_supplies import GrabSuppliesStates


class GroundSupplyTests(unittest.TestCase):
    def test_default_needed_supplies_are_configured_by_constructor(self):
        state = GrabSuppliesStates(Munch())
        self.assertEqual(state.supplies, {
            tuple(items.BED_IDS): (1, 1),
            (items.CHEST_ID,): (1, 1),
            tuple(items.FOOD_IDS): (1, 1),
        })

    def test_chest_drop_is_checked_even_when_bed_is_missing(self):
        chest = Munch(entity_id=8, item_id=items.CHEST_ID,
                      x=2.0, y=64.0, z=0.0)

        class FakeWorld:
            @staticmethod
            def find_objects(item_ids):
                return [chest] if items.CHEST_ID in item_ids else []

        class FakeGame:
            @staticmethod
            def count_inventory_slots():
                return 0

            @staticmethod
            def count_items(_item_ids):
                return 0

        state = GrabSuppliesStates(Munch(
            pos=(0.5, 64.0, 0.5), world=FakeWorld(), game=FakeGame(),
            maximum_supply_slots=33))
        state.init()
        state.check_supplies()
        state.find_ground_items()
        self.assertIn(tuple(items.BED_IDS), state.checked_ground_groups)
        state.check_supplies()

        self.assertEqual(state.target_items, (items.CHEST_ID,))
        self.assertIs(state.state.__func__, state.find_ground_items.__func__)

    def test_unreachable_barrel_ends_supply_task_without_trying_more(self):
        class FakeWorld:
            @staticmethod
            def path_to_place_faked(_start, _barrel):
                return None

        state = GrabSuppliesStates(Munch(
            pos=(0.5, 64.0, 0.5), world=FakeWorld(), chunks=Munch()))
        state.barrel = (10, 64, 10)
        state.path_to_barrel()

        self.assertIs(state.state.__func__, state.cleanup.__func__)
        self.assertEqual(state.bad_barrels, [(10, 64, 10)])

    def test_job_walks_to_and_picks_up_dropped_supply_before_barrels(self):
        axe_id = next(iter(items.AXE_IDS))
        dropped_axe = Munch(
            entity_id=7, item_id=axe_id, item_count=1,
            x=3.2, y=64.0, z=0.2)

        class FakeWorld:
            def __init__(self):
                self.path_requests = []

            def find_objects(self, item_ids):
                return ([dropped_axe] if axe_id in item_ids else [])

            def path_to_place(self, start, target):
                self.path_requests.append((start, target))
                return [start, target]

        class FakeGame:
            def __init__(self):
                self.item_count = 0

            def count_inventory_slots(self):
                return 5

            def count_items(self, item_ids):
                return self.item_count if axe_id in item_ids else 0

        world = FakeWorld()
        game = FakeGame()
        g = Munch(
            pos=(0.5, 64.0, 0.5), world=world, game=game,
            chunks=Munch(), objects={7: dropped_axe}, path=[],
            maximum_supply_slots=33,
        )
        state = GrabSuppliesStates(g)
        state.supplies = {tuple(items.AXE_IDS): (1, 9)}

        state.init()
        state.check_supplies()
        state.find_ground_items()
        self.assertIs(state.state.__func__, state.going_to_ground_item.__func__)
        self.assertEqual(g.path[-1], (3, 64, 0))
        self.assertEqual(world.path_requests, [((0, 64, 0), (3, 64, 0))])

        g.pos = (3.5, 64.0, 0.5)
        state.going_to_ground_item()
        self.assertIs(state.state.__func__, state.wait_for_ground_item.__func__)

        game.item_count = 1
        state.wait_for_ground_item()
        self.assertIs(state.state.__func__, state.check_supplies.__func__)
        state.check_supplies()
        self.assertIs(state.state.__func__, state.cleanup.__func__)

        # Nearby dropped tools are collected even when inventory already meets
        # the minimum, so tossing an axe during setup still gets noticed.
        game.item_count = 1
        state.init()
        state.check_supplies()
        self.assertIs(state.state.__func__, state.find_ground_items.__func__)
        state.find_ground_items()
        self.assertEqual(state.ground_required_count, 2)


if __name__ == '__main__':
    unittest.main()