package cz.davza.studentadventure.integration;

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

class GameIntegrationTest {

    private Game game;
    private CapturingOutputSink sink;

    @BeforeEach
    void setUp() {
        sink = new CapturingOutputSink();
        game = new Game(sink);
    }

    @Test
    void quitReturnsGameOver() {
        CommandResult result = game.sendCommand("quit");
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void commandAfterQuitIsRejected() {
        game.sendCommand("quit");
        CommandResult result = game.sendCommand("study 1");
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void unknownCommandReturnsFailed() {
        CommandResult result = game.sendCommand("fly");
        assertEquals(CommandState.FAILED, result.getResultState());
    }

    @Test
    void walkToHallwayChangesRoom() {
        CommandResult result = game.sendCommand("walk hallway");
        assertEquals(CommandState.ROOM_CHANGED, result.getResultState());
        assertEquals("hallway", game.getContext().getMap().getCurrentRoom().getExitCode());
    }

    @Test
    void walkToInvalidRoomFails() {
        CommandResult result = game.sendCommand("walk narnia");
        assertEquals(CommandState.FAILED, result.getResultState());
    }

    @Test
    void studyInBedroomWorks() {
        int intBefore = game.getContext().getPlayer().getIntelligence().getValue();
        game.sendCommand("study 1");
        assertEquals(intBefore + 5, game.getContext().getPlayer().getIntelligence().getValue());
    }

    @Test
    void deadlinePassedCausesGameOver() {
        // Advance time past day 7, 09:00
        for (int i = 0; i < 7; i++) game.getContext().getTime().advanceToNextMorning();
        game.getContext().getTime().advanceHours(2);
        // Any command should trigger the deadline check
        CommandResult result = game.sendCommand("stats");
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void stressAt100CausesGameOver() {
        game.getContext().getPlayer().getStress().increase(100);
        CommandResult result = game.sendCommand("stats");
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void fullWalkSequenceBedroomToHallway() {
        game.sendCommand("walk hallway");
        assertEquals("hallway", game.getContext().getMap().getCurrentRoom().getExitCode());
    }

    @Test
    void enteringClassroomWithoutBookFails() {
        game.sendCommand("walk hallway");
        CommandResult result = game.sendCommand("walk classroom");
        assertEquals(CommandState.FAILED, result.getResultState());
        // should still be in hallway
        assertEquals("hallway", game.getContext().getMap().getCurrentRoom().getExitCode());
    }

    @Test
    void fullPathToExamAndPass() {
        // Max out intelligence, walk to exam room, enter with correct ID, take exam
        game.getContext().getPlayer().getIntelligence().increase(100);
        game.getContext().getPlayer().getInventory().Add(new Book(), 1);

        game.sendCommand("walk hallway");
        game.sendCommand("walk classroom");
        game.sendCommand("walk examroom"); // triggers ID prompt

        String studentId = game.getContext().getPlayer().getId();
        game.sendCommand(studentId); // enter exam room

        CommandResult result = game.sendCommand("takeexam");
        assertEquals(CommandState.GAME_WIN, result.getResultState());
    }

    @Test
    void buyAndConsumeEnergyDrinkFlow() {
        // Walk to shop: hallway → studyroom → computerlab → shop
        game.sendCommand("walk hallway");
        game.sendCommand("walk studyroom");
        game.sendCommand("walk computerlab");
        game.sendCommand("walk shop");

        game.getContext().getPlayer().getEnergy().decrease(50);
        int energyBefore = game.getContext().getPlayer().getEnergy().getValue();

        game.sendCommand("buy energy_drink");
        game.sendCommand("consume energy_drink");

        assertTrue(game.getContext().getPlayer().getEnergy().getValue() > energyBefore);
    }

    @Test
    void computerInteractionFullFlow() {
        game.sendCommand("walk hallway");
        game.sendCommand("walk studyroom");
        game.sendCommand("walk computerlab");

        game.sendCommand("interact computer");       // → asks for password
        game.sendCommand("wrongpassword");           // → wrong
        game.sendCommand("java123");                 // → correct, now active

        int intBefore = game.getContext().getPlayer().getIntelligence().getValue();
        game.sendCommand("study 1");                 // study while at computer
        assertEquals(intBefore + 5,
                game.getContext().getPlayer().getIntelligence().getValue());

        CommandResult result = game.sendCommand("exit"); // leave computer
        assertEquals(CommandState.ACTION_RESUMED, result.getResultState());
    }
}