package cz.davza.studentadventure.commands;

import cz.davza.studentadventure.TestHelpers;
import cz.davza.studentadventure.enums.CommandState;
import cz.davza.studentadventure.objects.CommandResult;
import cz.davza.studentadventure.objects.GameData;
import cz.davza.studentadventure.objects.Player;
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 TakeExamCommandTest {

    private GameData context;
    private Player player;

    @BeforeEach
    void setUp() {
        context = TestHelpers.buildGameData();
        player  = context.getPlayer();
    }

    @Test
    void examPassesWhenIntelligenceHighEnough() {
        // Need effectiveScore >= 50. intelligence - stress/10 >= 50
        // Set intelligence to 50, stress to 0 → score = 50
        player.getIntelligence().increase(100); // clamps to 100
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_WIN, result.getResultState());
    }

    @Test
    void examFailsWhenIntelligenceTooLow() {
        // Default intelligence = 5, stress = 0 → score = 5, need 50 → fail
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void examStressPenaltyReducesScore() {
        // intelligence 60, stress 100 → penalty 10 → score 50 → just passes
        player.getIntelligence().increase(100); // 100
        player.getStress().increase(100);       // 100 → penalty 10
        // effectiveScore = 100 - 10 = 90 → passes
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_WIN, result.getResultState());
    }

    @Test
    void examFailsWhenStressPenaltyPullsScoreBelow50() {
        // intelligence = 55, stress = 100 → penalty 10 → score 45 → fail
        player.getIntelligence().increase(50); // starts at 5, becomes 55
        player.getStress().increase(100);
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }

    @Test
    void examPassMessageContainsDistinctionWhenScoreAbove80() {
        player.getIntelligence().increase(100); // 100
        // stress = 0 → score = 100 → distinction
        CommandResult result = execute("takeexam", context);
        assertTrue(result.getResultMessage().contains("DISTINCTION"));
    }

    @Test
    void examPassMessageContainsMeritWhenScoreBetween65And80() {
        // Need score 65-79: intelligence 70, stress 0 → score 70
        player.getIntelligence().increase(65); // 5 + 65 = 70
        CommandResult result = execute("takeexam", context);
        assertTrue(result.getResultMessage().contains("MERIT"));
    }

    @Test
    void examPassMessageContainsPassWhenScoreBetween50And64() {
        // Need score 50-64: intelligence 55, stress 0 → score 55
        player.getIntelligence().increase(50); // 5 + 50 = 55
        CommandResult result = execute("takeexam", context);
        assertTrue(result.getResultMessage().contains("RESULT: PASS\n"));
    }

    @Test
    void examScoreExactlyAtThresholdPasses() {
        // intelligence = 50, stress 0 → score exactly 50 → pass
        player.getIntelligence().increase(45); // 5 + 45 = 50
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_WIN, result.getResultState());
    }

    @Test
    void examScoreOneBelowThresholdFails() {
        // intelligence = 49, stress 0 → score 49 → fail
        player.getIntelligence().increase(44); // 5 + 44 = 49
        CommandResult result = execute("takeexam", context);
        assertEquals(CommandState.GAME_OVER, result.getResultState());
    }
}