import Entity.Player;
import Item.*;
import Job.Wizard;
import Job.Knight;
import org.junit.jupiter.api.Test;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.nullValue;
import static org.junit.jupiter.api.Assertions.*;

public class EquipmentTest {
    private final Knight knight = new Knight();
    private final Wizard wizard = new Wizard();
    private Player defaultWizard(){
        return new Player("name", wizard);
    }
    private AttributeModifier defaultAttributeModifier(){
        return new AttributeModifier(4,8,7,1,2,8);
    }
    private BodyArmour defaultArmorType(){
        return new BodyArmour("Body Armour", defaultAttributeModifier());
    }
    private Equipment defaultBodyArmour() {
        AttributeModifier a = defaultAttributeModifier();
        BodyArmour b = new BodyArmour("Body Armour", a);
        return new Equipment("5", "Thornmail", b, knight, 2);
    }

    private Equipment defaultMageHat() {
        AttributeModifier a = new AttributeModifier(4,8,2,10,2,8);
        MageHat b = new MageHat("Mage Hat", a);
        return new Equipment("6", "Deathmage Cap", b, wizard, 1);
    }

    @Test
    void setIdOnCreation(){
        var e = defaultBodyArmour();
        assertEquals(defaultBodyArmour().getId(), e.getId(), "Equipment id should have been set");
    }

    @Test
    void setNameOnCreation() {
        var e = defaultBodyArmour();
        assertEquals("Thornmail", e.getName(), "Equipment name should have been set");
    }

    @Test
    void returnsUnmodifiedMagicStrengthIfNoEquipment(){
        var w = new Player("name");
        assertEquals(0, w.getMagicStrength());
    }

    @Test
    void returnsUnmodifiedDefenceIfNoEquipment(){
        var w = new Player("name");
        assertEquals(0, w.getDefence());
    }
    @Test
    void returnsUnmodifiedStrengthIfNoEquipment(){
        var w = new Player("name");
        assertEquals(0, w.getStrength());
    }
    @Test
    void returnsUnmodifiedMagicDefenceIfNoEquipment(){
        var w = new Player("name");
        assertEquals(0, w.getMagicDefence());
    }

    @Test
    void setEquipmentWeightOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(defaultBodyArmour().getWeight(), e.getWeight(), "Equipment weight should have been set");
    }

    @Test
    void setBodyArmourTypeOnCreation() {
        var e = defaultBodyArmour();
        assertEquals("Body Armour", e.getEquipmentType().getName(), "Equipment type should have been set");
    }

    @Test
    void setMageHatTypeOnCreation() {
        var e = defaultMageHat();
        assertEquals("Mage Hat", e.getEquipmentType().getName(), "Equipment type should have been set");
    }

    @Test
    void setSlotOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(2, e.getSlot(), "Equipment slot should have been set");
    }

    @Test
    void setMaxHpModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(4, e.getEquipmentType().getModifiers().getMaxHpMod(), "Equipment max hp modifier should have been set");
    }

    @Test
    void setMaxMpModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(8, e.getEquipmentType().getModifiers().getMaxMpMod(), "Equipment max mp modifier should have been set");
    }

    @Test
    void setStrModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(7, e.getEquipmentType().getModifiers().getStrMod(), "Equipment strength modifier should have been set");
    }

    @Test
    void setMagicStrModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(1, e.getEquipmentType().getModifiers().getMagicStrMod(), "Equipment magic strength modifier should have been set");
    }

    @Test
    void setDefModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(4, e.getEquipmentType().getModifiers().getDefMod(), "Equipment defence modifier should have been set");
    }

    @Test
    void setMagicDefModOnCreation() {
        var e = defaultBodyArmour();
        assertEquals(16, e.getEquipmentType().getModifiers().getMagicDefMod(), "Equipment magic defence modifier should have been set");
    }

    @Test
    void canEquipWithRightJob() {
        var p = defaultWizard();
        p.equip(defaultMageHat());
        assertTrue(p.getEquipments().get(defaultMageHat().getSlot()).equals(defaultMageHat()), "Wizard can equip wizard hat");
    }

    @Test
    void isNotEqualIfNameIsDifferent() {
        var e1 = new Equipment("e1", "equipment 1", defaultArmorType(), knight, 1);
        var e2 = new Equipment("e2", "equipment 2", defaultArmorType(), knight, 1);
        assertFalse(e1.equals(e2));
    }


    @Test
    void canNotEquipWithWrongJob() {
        var p = defaultWizard();
        IllegalStateException exception = assertThrows(
                IllegalStateException.class,
                () -> p.equip(defaultBodyArmour())
        );
        assertTrue(exception.getMessage().contains("A player with this job can not equip this equipment"));
    }

    @Test
    void canNotEquipAlreadyEquippedSlot() {
        AttributeModifier a = new AttributeModifier(2,2,2,2,2,8);
        MageHat b = new MageHat("Mage Hat", a);
        Equipment e = new Equipment("7", "Mage hat2", b, wizard, 1);
        var p = defaultWizard();
        p.equip(defaultMageHat());
        IllegalStateException exception = assertThrows(
                IllegalStateException.class,
                () -> p.equip(e)
        );
        assertTrue(exception.getMessage().contains("Equipment slot already filled"));
    }

    @Test
    void bodyArmourToString() {
        AttributeModifier a = new AttributeModifier(1,1,1,1,1,1);
        BodyArmour b = new BodyArmour("Body Armour", a);
        assertEquals("Body Armour111122", b.toString(), "Equipment name should have been set");
    }

    @Test
    void mageHatToString() {
        AttributeModifier a = new AttributeModifier(1,1,1,1,1,1);
        MageHat b = new MageHat("Mage Hat", a);
        assertEquals("Mage Hat111212", b.toString(), "Equipment name should have been set");
    }

    @Test
    void equipmentModifiesPlayerHealth() {
        var p = defaultWizard();
        p.setHealth(100);
        p.equip(defaultMageHat());
        assertEquals(104, p.getHealth(), "Equipment modifies health");
    }

    @Test
    void equipmentModifiesPlayerMana() {
        var p = defaultWizard();
        p.setMana(30);
        p.equip(defaultMageHat());
        assertEquals(38, p.getMana(),  "Equipment modifies mana");
    }

    @Test
    void equipmentModifiesPlayerStrength() {
        var p = defaultWizard();
        p.equip(defaultMageHat());
        assertEquals(2, p.getStrength(),  "Equipment modifies strength");
    }

    @Test
    void equipmentModifiesPlayerMagicStrength() {
        var p = defaultWizard();
        p.equip(defaultMageHat());
        assertEquals(20, p.getMagicStrength(),  "Equipment modifies magic strength");
    }

    @Test
    void equipmentModifiesPlayerDefence() {
        var p = defaultWizard();
        p.equip(defaultMageHat());
        assertEquals(2, p.getDefence(),  "Equipment modifies defence");
    }

    @Test
    void equipmentModifiesPlayerMagicDefence() {
        var p = defaultWizard();
        p.equip(defaultMageHat());assertEquals(16, p.getMagicDefence() , "Equipment modifies magic defence");
    }



}