package cz.davza.studentadventure.commands;

import cz.davza.studentadventure.Items.Book;
import cz.davza.studentadventure.TestHelpers;
import cz.davza.studentadventure.enums.CommandState;
import cz.davza.studentadventure.objects.CommandResult;
import cz.davza.studentadventure.objects.GameData;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import static cz.davza.studentadventure.TestHelpers.execute;
import static org.junit.jupiter.api.Assertions.*;

class WalkCommandTest {

    private GameData context;

    @BeforeEach
    void setUp() {
        context = TestHelpers.buildGameData();
        // starts in Bedroom
    }

    @Test
    void walkToValidExitSetsNextRoom() {
        execute("walk hallway", context);
        assertTrue(context.getMap().hasPendingRoomChange());
    }

    @Test
    void walkToValidExitReturnsRoomChanged() {
        CommandResult result = execute("walk hallway", context);
        assertEquals(CommandState.ROOM_CHANGED, result.getResultState());
    }

    @Test
    void walkAdvancesTimeByTwoHours() {
        int before = context.getTime().getHour();
        execute("walk hallway", context);
        assertEquals(before + 2, context.getTime().getHour());
    }

    @Test
    void walkAdvancesHoursAwake() {
        execute("walk hallway", context);
        // 1 hour awake — still NORMAL
        assertEquals(cz.davza.studentadventure.enums.DeprivationState.NORMAL,
                context.getPlayer().getDeprivationState());
    }

    @Test
    void walkToInvalidExitReturnsFailed() {
        CommandResult result = execute("walk narnia", context);
        assertEquals(CommandState.FAILED, result.getResultState());
    }

    @Test
    void walkWithNoParamsReturnsInvalidParams() {
        CommandResult result = execute("walk", context);
        assertEquals(CommandState.INVALID_PARAMS, result.getResultState());
    }

    @Test
    void walkToClassroomWithoutBookReturnsFailed() {
        // Bedroom → hallway (commit) → classroom (no book)
        execute("walk hallway", context);
        context.getMap().commitRoomChange();
        CommandResult result = execute("walk classroom", context);
        assertEquals(CommandState.FAILED, result.getResultState());
    }

    @Test
    void walkToClassroomWithoutBookAppliesStressPenalty() {
        execute("walk hallway", context);
        context.getMap().commitRoomChange();
        int stressBefore = context.getPlayer().getStress().getValue();
        execute("walk classroom", context);
        assertTrue(context.getPlayer().getStress().getValue() > stressBefore);
    }

    @Test
    void walkToClassroomWithBookReturnsRoomChanged() {
        context.getPlayer().getInventory().Add(new Book(), 1);
        execute("walk hallway", context);
        context.getMap().commitRoomChange();
        CommandResult result = execute("walk classroom", context);
        assertEquals(CommandState.ROOM_CHANGED, result.getResultState());
    }

    @Test
    void walkToExamRoomReturnsActionPending() {
        // Bedroom → hallway → classroom (with book) → examroom
        context.getPlayer().getInventory().Add(new Book(), 1);
        execute("walk hallway", context);
        context.getMap().commitRoomChange();
        execute("walk classroom", context);
        context.getMap().commitRoomChange();
        CommandResult result = execute("walk examroom", context);
        assertEquals(CommandState.ACTION_PENDING, result.getResultState());
    }
}