foul-magics/Mage.Verify/src/test/java/mage/verify/VerifyCardDataTest.java

package mage.verify;

import mage.ObjectColor;
import mage.cards.*;
import mage.cards.basiclands.BasicLand;
import mage.constants.CardType;
import mage.constants.Constants;
import mage.constants.Rarity;
import mage.constants.SuperType;
import mage.game.permanent.token.Token;
import mage.game.permanent.token.TokenImpl;
import mage.util.CardUtil;
import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;
import org.mage.plugins.card.images.CardDownloadData;
import org.mage.plugins.card.images.DownloadPictures;
import org.reflections.Reflections;

import java.io.IOException;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Modifier;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Paths;
import java.util.*;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import java.util.stream.Collectors;

/**
 * @author JayDi85
 */
public class VerifyCardDataTest {

    // right now this is very noisy, and not useful enough to make any assertions on
    private static final boolean CHECK_SOURCE_TOKENS = false;

    private static final HashMap<String, Set<String>> skipCheckLists = new HashMap<>();

    private static void skipListCreate(String listName) {
        skipCheckLists.put(listName, new LinkedHashSet<>());
    }

    private static void skipListAddName(String listName, String set, String name) {
        skipCheckLists.get(listName).add(set + " - " + name);
    }

    private static boolean skipListHaveName(String listName, String set, String name) {
        return skipCheckLists.get(listName).contains(set + " - " + name);
    }

    static {
        // skip lists for checks (example: unstable cards with same name may have different stats)

        // power-toughness
        skipListCreate("PT");
        skipListAddName("PT", "UST", "Garbage Elemental");
        skipListAddName("PT", "UST", "Infinity Elemental");

        // color
        skipListCreate("COLOR");

        // cost
        skipListCreate("COST");

        // supertype
        skipListCreate("SUPERTYPE");

        // type
        skipListCreate("TYPE");

        // subtype
        skipListCreate("SUBTYPE");

        // number
        skipListCreate("NUMBER");

        // missing abilities
        skipListCreate("MISSING_ABILITIES");
    }

    public static List<Card> allCards() {
        Collection<ExpansionSet> sets = Sets.getInstance().values();
        List<Card> cards = new ArrayList<>();
        for (ExpansionSet set : sets) {
            if (set.isCustomSet()) {
                continue;
            }
            for (ExpansionSet.SetCardInfo setInfo : set.getSetCardInfo()) {
                cards.add(CardImpl.createCard(setInfo.getCardClass(), new CardSetInfo(setInfo.getName(), set.getCode(),
                        setInfo.getCardNumber(), setInfo.getRarity(), setInfo.getGraphicInfo())));
            }
        }
        return cards;
    }

    private void warn(Card card, String message) {
        outputMessages.add("Warning: " + message + " for " + card.getExpansionSetCode() + " - " + card.getName() + " - " + card.getCardNumber());
    }

    private void fail(Card card, String category, String message) {
        failed++;
        outputMessages.add("Error: (" + category + ") " + message + " for " + card.getExpansionSetCode() + " - " + card.getName() + " - " + card.getCardNumber());
    }

    private int failed = 0;
    private ArrayList<String> outputMessages = new ArrayList<>();

    @Test
    public void verifyCards() throws IOException {
        for (Card card : allCards()) {
            Set<String> tokens = findSourceTokens(card.getClass());
            if (card.isSplitCard()) {
                check(((SplitCard) card).getLeftHalfCard(), null);
                check(((SplitCard) card).getRightHalfCard(), null);
            } else {
                check(card, tokens);
            }
        }

        printMessages(outputMessages);
        if (failed > 0) {
            Assert.fail(failed + " errors in verify");
        }
    }

    @Test
    public void checkDuplicateCardNumbersInDB() {
        Collection<String> doubleErrors = new ArrayList<>();

        Collection<ExpansionSet> sets = Sets.getInstance().values();
        for (ExpansionSet set : sets) {
            Map<String, ExpansionSet.SetCardInfo> cardsList = new HashMap<>();
            for (ExpansionSet.SetCardInfo checkCard : set.getSetCardInfo()) {
                String cardNumber = checkCard.getCardNumber();

                // ignore double faced
                Card realCard = CardImpl.createCard(checkCard.getCardClass(), new CardSetInfo(checkCard.getName(), set.getCode(),
                        checkCard.getCardNumber(), checkCard.getRarity(), checkCard.getGraphicInfo()));
                if (realCard.isNightCard()) {
                    continue;
                }

                if (cardsList.containsKey(cardNumber)) {
                    ExpansionSet.SetCardInfo prevCard = cardsList.get(cardNumber);

                    String errorType;
                    if (checkCard.getName().equals(prevCard.getName())) {
                        errorType = " founded DUPLICATED cards"
                                + " set (" + set.getCode() + " - " + set.getName() + ")"
                                + " (" + checkCard.getCardNumber() + " - " + checkCard.getName() + ")";
                    } else {
                        errorType = " founded TYPOS in card numbers"
                                + " set (" + set.getCode() + " - " + set.getName() + ")"
                                + " (" + prevCard.getCardNumber() + " - " + prevCard.getName() + ")"
                                + " and"
                                + " (" + checkCard.getCardNumber() + " - " + checkCard.getName() + ")";
                    }

                    String error = "Error: " + errorType;

                    doubleErrors.add(error);
                } else {
                    cardsList.put(cardNumber, checkCard);
                }
            }
        }

        for (String error : doubleErrors) {
            System.out.println(error);
        }

        if (doubleErrors.size() > 0) {
            Assert.fail("DB have duplicated card numbers, founded errors: " + doubleErrors.size());
        }
    }

    @Test
    public void checkWrongCardClasses() {
        Collection<String> errorsList = new ArrayList<>();
        Map<String, String> classesIndex = new HashMap<>();
        int totalCards = 0;

        Collection<ExpansionSet> sets = Sets.getInstance().values();
        for (ExpansionSet set : sets) {
            for (ExpansionSet.SetCardInfo checkCard : set.getSetCardInfo()) {
                totalCards = totalCards + 1;

                String currentClass = checkCard.getCardClass().toString();
                if (classesIndex.containsKey(checkCard.getName())) {
                    String needClass = classesIndex.get(checkCard.getName());
                    if (!needClass.equals(currentClass)) {
                        // workaround to star wars set with same card names
                        if (!checkCard.getName().equals("Syndicate Enforcer")) {
                            errorsList.add("Error: founded wrong class in set " + set.getCode() + " - " + checkCard.getName() + " (" + currentClass + " <> " + needClass + ")");
                        }
                    }
                } else {
                    classesIndex.put(checkCard.getName(), currentClass);
                }
            }
        }

        for (String error : errorsList) {
            System.out.println(error);
        }

        // unique cards stats
        System.out.println("Total unique cards: " + classesIndex.size() + ", total non unique cards (reprints): " + totalCards);

        if (errorsList.size() > 0) {
            Assert.fail("DB have wrong card classes, founded errors: " + errorsList.size());
        }
    }

    @Test
    public void checkMissingSets() {

        Collection<String> errorsList = new ArrayList<>();

        int totalMissingSets = 0;
        int totalMissingCards = 0;
        Collection<ExpansionSet> sets = Sets.getInstance().values();
        for (Map.Entry<String, JsonSet> refEntry : MtgJson.sets().entrySet()) {
            JsonSet refSet = refEntry.getValue();

            // replace codes for aliases
            String searchSet = MtgJson.mtgJsonToXMageCodes.getOrDefault(refSet.code, refSet.code);

            ExpansionSet mageSet = Sets.findSet(searchSet);
            if (mageSet == null) {
                totalMissingSets = totalMissingSets + 1;
                totalMissingCards = totalMissingCards + refSet.cards.size();
                errorsList.add("Warning: missing set " + refSet.code + " - " + refSet.name + " (cards: " + refSet.cards.size() + ")");
            }
        }
        if (errorsList.size() > 0) {
            errorsList.add("Warning: total missing sets: " + totalMissingSets + ", with missing cards: " + totalMissingCards);
        }

        // only warnings
        for (String error : errorsList) {
            System.out.println(error);
        }
    }

    private Object createNewObject(Class<?> clazz) {
        try {
            Constructor<?> cons = clazz.getConstructor();
            return cons.newInstance();
        } catch (InvocationTargetException ex) {
            Throwable e = ex.getTargetException();
            e.printStackTrace();
            return null;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }

    private void printMessages(Collection<String> list, boolean sorted) {

        ArrayList<String> sortedList = new ArrayList<>(list);
        if (sorted) {
            sortedList.sort(String::compareTo);
        }

        for (String mes : sortedList) {
            System.out.println(mes);
        }
    }

    private void printMessages(Collection<String> list) {
        printMessages(list, true);
    }

    private String extractShortClass(Class<? extends TokenImpl> tokenClass) {
        String origin = tokenClass.getName();
        if (origin.contains("$")) {
            // inner classes, example: mage.cards.f.FigureOfDestiny$FigureOfDestinyToken3
            return origin.replaceAll(".+\\$(.+)", "$1");
        } else {
            // public classes, example: mage.game.permanent.token.FigureOfDestinyToken
            return origin.replaceAll(".+\\.(.+)", "$1");
        }
    }

    @Test
    public void checkMissingSetData() {
        Collection<String> errorsList = new ArrayList<>();
        Collection<String> warningsList = new ArrayList<>();

        Collection<ExpansionSet> sets = Sets.getInstance().values();

        // 1. wrong set class names
        for (ExpansionSet set : sets) {
            String className = extractShortClass(set.getClass());
            String needClassName = set.getName()
                    //.replaceAll("Duel Decks", "")
                    .replaceAll("&", "And")
                    .replaceAll(" vs. ", " Vs ") // for more friendly class name generation in logs TODO: replace to CamelCase transform instead custom words
                    .replaceAll(" the ", " The ")
                    .replaceAll(" and ", " And ")
                    .replaceAll(" of ", " Of ")
                    .replaceAll(" to ", " To ")
                    .replaceAll(" for ", " For ")
                    .replaceAll(" into ", " Into ")
                    .replaceAll(" over ", " Over ")
                    .replaceAll("[ .+-/:\"']", "");

            //if (!className.toLowerCase(Locale.ENGLISH).equals(needClassName.toLowerCase(Locale.ENGLISH))) {
            if (!className.equals(needClassName)) {
                errorsList.add("error, set's class name must be equal to set name: "
                        + className + " from " + set.getClass().getName() + ", caption: " + set.getName() + ", need name: " + needClassName);
            }
        }

        // 2. wrong basic lands settings (it's for lands search, not booster construct)
        Map<String, Boolean> skipLandCheck = new HashMap<>();
        for (ExpansionSet set : sets) {
            if (skipLandCheck.containsKey(set.getName())) {
                continue;
            }

            Boolean needLand = set.hasBasicLands();
            Boolean foundedLand = false;
            Map<String, Integer> foundLandsList = new HashMap<>();
            for (ExpansionSet.SetCardInfo card : set.getSetCardInfo()) {
                if (isBasicLandName(card.getName())) {
                    foundedLand = true;
                    int count = foundLandsList.getOrDefault(card.getName(), 0);
                    foundLandsList.put(card.getName(), count + 1);
                }
            }

            String landNames = foundLandsList.entrySet().stream()
                    .map(p -> (p.getKey() + " - " + p.getValue().toString()))
                    .sorted().collect(Collectors.joining(", "));

            if (needLand && !foundedLand) {
                errorsList.add("error, found set with wrong hasBasicLands - it's true, but haven't land cards: " + set.getCode() + " in " + set.getClass().getName());
            }

            if (!needLand && foundedLand) {
                errorsList.add("error, found set with wrong hasBasicLands - it's false, but have land cards: " + set.getCode() + " in " + set.getClass().getName() + ", lands: " + landNames);
            }

            // TODO: add test to check num cards (hasBasicLands and numLand > 0)
        }

        // TODO: add test to check num cards for rarity (rarityStats > 0 and numRarity > 0)

        printMessages(warningsList);
        printMessages(errorsList);
        if (errorsList.size() > 0) {
            Assert.fail("Founded set errors: " + errorsList.size());
        }
    }

    @Test
    public void checkMissingCardData() {
        Collection<String> errorsList = new ArrayList<>();
        Collection<String> warningsList = new ArrayList<>();

        Collection<ExpansionSet> sets = Sets.getInstance().values();


        // 1. wrong UsesVariousArt settings (set have duplicated card name without that setting -- e.g. cards will have same image)
        for (ExpansionSet set : sets) {

            // double names
            Map<String, Integer> doubleNames = new HashMap<>();
            for (ExpansionSet.SetCardInfo card : set.getSetCardInfo()) {
                int count = doubleNames.getOrDefault(card.getName(), 0);
                doubleNames.put(card.getName(), count + 1);
            }

            // check
            for (ExpansionSet.SetCardInfo card : set.getSetCardInfo()) {
                boolean cardHaveDoubleName = (doubleNames.getOrDefault(card.getName(), 0) > 1);
                boolean cardHaveVariousSetting = card.getGraphicInfo() == null ?  false : card.getGraphicInfo().getUsesVariousArt();

                if(cardHaveDoubleName && !cardHaveVariousSetting) {
                    errorsList.add("error, founded double card names, but UsesVariousArt is not true: " + set.getCode() + " - " + set.getName() + " - " + card.getName() + " - " + card.getCardNumber());
                }
            }
        }

        printMessages(warningsList);
        printMessages(errorsList);
        if (errorsList.size() > 0) {
            Assert.fail("Founded card errors: " + errorsList.size());
        }
    }

    @Test
    @Ignore  // TODO: enable test after massive token fixes
    public void checkMissingTokenData() {

        Collection<String> errorsList = new ArrayList<>();
        Collection<String> warningsList = new ArrayList<>();

        // all tokens must be stores in card-pictures-tok.txt (if not then viewer and image downloader are missing token images)
        // https://github.com/ronmamo/reflections
        Reflections reflections = new Reflections("mage.");
        Set<Class<? extends TokenImpl>> tokenClassesList = reflections.getSubTypesOf(TokenImpl.class);

        // xmage tokens
        Set<Class<? extends TokenImpl>> privateTokens = new HashSet<>();
        Set<Class<? extends TokenImpl>> publicTokens = new HashSet<>();
        for (Class<? extends TokenImpl> tokenClass : tokenClassesList) {
            if (Modifier.isPublic(tokenClass.getModifiers())) {
                publicTokens.add(tokenClass);
            } else {
                privateTokens.add(tokenClass);
            }
        }

        // tok file's data
        ArrayList<CardDownloadData> tokFileTokens = DownloadPictures.getTokenCardUrls();
        LinkedHashMap<String, String> tokDataClassesIndex = new LinkedHashMap<>();
        LinkedHashMap<String, String> tokDataNamesIndex = new LinkedHashMap<>();
        for (CardDownloadData tokData : tokFileTokens) {

            String searchName;
            String setsList;

            // by class
            searchName = tokData.getTokenClassName();
            setsList = tokDataClassesIndex.getOrDefault(searchName, "");
            if (!setsList.isEmpty()) {
                setsList += ",";
            }
            setsList += tokData.getSet();
            tokDataClassesIndex.put(searchName, setsList);

            // by name
            searchName = tokData.getName();
            setsList = tokDataNamesIndex.getOrDefault(searchName, "");
            if (!setsList.isEmpty()) {
                setsList += ",";
            }
            setsList += tokData.getSet();
            tokDataNamesIndex.put(searchName, setsList);
        }

        // 1. check token name convention
        for (Class<? extends TokenImpl> tokenClass : tokenClassesList) {
            if (!tokenClass.getName().endsWith("Token")) {
                String className = extractShortClass(tokenClass);
                warningsList.add("warning, token class must ends with Token: " + className + " from " + tokenClass.getName());
            }
        }

        // 2. check store file for public
        for (Class<? extends TokenImpl> tokenClass : publicTokens) {
            String fullClass = tokenClass.getName();
            if (!fullClass.startsWith("mage.game.permanent.token.")) {
                String className = extractShortClass(tokenClass);
                errorsList.add("error, public token must stores in mage.game.permanent.token package: " + className + " from " + tokenClass.getName());
            }
        }

        // 3. check private tokens (they aren't need at all)
        for (Class<? extends TokenImpl> tokenClass : privateTokens) {
            String className = extractShortClass(tokenClass);
            errorsList.add("error, no needs in private tokens, replace it with CreatureToken: " + className + " from " + tokenClass.getName());
        }

        // 4. all public tokens must have tok-data (private tokens uses for innner abilities -- no need images for it)
        for (Class<? extends TokenImpl> tokenClass : publicTokens) {
            String className = extractShortClass(tokenClass);
            Token token = (Token) createNewObject(tokenClass);
            //Assert.assertNotNull("Can't create token by default constructor", token);
            if (token == null) {
                Assert.fail("Can't create token by default constructor: " + className);
            } else if (tokDataNamesIndex.getOrDefault(token.getName(), "").isEmpty()) {
                errorsList.add("error, can't find data in card-pictures-tok.txt for token: " + tokenClass.getName() + " -> " + token.getName());
            }
        }

        // TODO: all sets must have full tokens data in tok file (token in every set)
        // 1. Download scryfall tokens list: https://api.scryfall.com/cards/search?q=t:token
        // 2. Proccess each token with all prints: read "prints_search_uri" field from token data and go to link like
        // https://api.scryfall.com/cards/search?order=set&q=%21%E2%80%9CAngel%E2%80%9D&unique=prints
        // 3. Collect all strings in "set@name"
        // 4. Proccess tokens data and find missing strings from "set@name" list
        printMessages(warningsList);
        printMessages(errorsList);
        if (errorsList.size() > 0) {
            Assert.fail("Founded token errors: " + errorsList.size());
        }
    }

    private static final Pattern SHORT_JAVA_STRING = Pattern.compile("(?<=\")[A-Z][a-z]+(?=\")");

    private Set<String> findSourceTokens(Class c) throws IOException {
        if (!CHECK_SOURCE_TOKENS || BasicLand.class.isAssignableFrom(c)) {
            return null;
        }
        String path = "../Mage.Sets/src/" + c.getName().replace(".", "/") + ".java";
        try {
            String source = new String(Files.readAllBytes(Paths.get(path)), StandardCharsets.UTF_8);
            Matcher matcher = SHORT_JAVA_STRING.matcher(source);
            Set<String> tokens = new HashSet<>();
            while (matcher.find()) {
                tokens.add(matcher.group());
            }
            return tokens;
        } catch (NoSuchFileException e) {
            System.out.println("failed to read " + path);
            return null;
        }
    }

    private void check(Card card, Set<String> tokens) {
        JsonCard ref = MtgJson.card(card.getName());
        if (ref == null) {
            warn(card, "Missing card reference");
            return;
        }
        checkAll(card, ref);
        if (tokens != null) {
            JsonCard ref2 = null;
            if (card.isFlipCard()) {
                ref2 = MtgJson.card(card.getFlipCardName());
            }
            for (String token : tokens) {
                if (!(token.equals(card.getName())
                        || containsInTypesOrText(ref, token)
                        || containsInTypesOrText(ref, token.toLowerCase(Locale.ENGLISH))
                        || (ref2 != null && (containsInTypesOrText(ref2, token) || containsInTypesOrText(ref2, token.toLowerCase(Locale.ENGLISH)))))) {
                    System.out.println("unexpected token " + token + " in " + card);
                }
            }
        }
    }

    private boolean containsInTypesOrText(JsonCard ref, String token) {
        return contains(ref.types, token)
                || contains(ref.subtypes, token)
                || contains(ref.supertypes, token)
                || ref.text.contains(token);
    }

    private boolean contains(Collection<String> options, String value) {
        return options != null && options.contains(value);
    }

    private void checkAll(Card card, JsonCard ref) {
        checkCost(card, ref);
        checkPT(card, ref);
        checkSubtypes(card, ref);
        checkSupertypes(card, ref);
        checkTypes(card, ref);
        checkColors(card, ref);
        //checkNumbers(card, ref); // TODO: load data from allsets.json and check it (allcards.json do not have card numbers)
        checkBasicLands(card, ref);
        checkMissingAbilities(card, ref);
    }

    private void checkColors(Card card, JsonCard ref) {
        if (skipListHaveName("COLOR", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        Collection<String> expected = ref.colors;
        ObjectColor color = card.getColor(null);
        if (expected == null) {
            expected = Collections.emptyList();
        }
        if (expected.size() != color.getColorCount()
                || (color.isBlack() && !expected.contains("Black"))
                || (color.isBlue() && !expected.contains("Blue"))
                || (color.isGreen() && !expected.contains("Green"))
                || (color.isRed() && !expected.contains("Red"))
                || (color.isWhite() && !expected.contains("White"))) {
            fail(card, "colors", color + " != " + expected);
        }
    }

    private void checkSubtypes(Card card, JsonCard ref) {
        if (skipListHaveName("SUBTYPE", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        Collection<String> expected = ref.subtypes;

        // fix names (e.g. Urza’s to Urza's)
        if (expected != null && expected.contains("Urza’s")) {
            expected = new ArrayList<>(expected);
            for (ListIterator<String> it = ((List<String>) expected).listIterator(); it.hasNext(); ) {
                if (it.next().equals("Urza’s")) {
                    it.set("Urza's");
                }
            }
        }

        if (!eqSet(card.getSubtype(null).stream().map(p -> p.toString()).collect(Collectors.toSet()), expected)) {
            fail(card, "subtypes", card.getSubtype(null) + " != " + expected);
        }
    }

    private void checkSupertypes(Card card, JsonCard ref) {
        if (skipListHaveName("SUPERTYPE", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        Collection<String> expected = ref.supertypes;
        if (!eqSet(card.getSuperType().stream().map(s -> s.toString()).collect(Collectors.toList()), expected)) {
            fail(card, "supertypes", card.getSuperType() + " != " + expected);
        }
    }

    private void checkMissingAbilities(Card card, JsonCard ref) {
        if (skipListHaveName("MISSING_ABILITIES", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        // search missing abilities from card source
        if (ref.text == null || ref.text.isEmpty()) {
            return;
        }

        // spells have only 1 abilities
        if (card.isSorcery() || card.isInstant()) {
            return;
        }

        // additional cost go to 1 ability
        if (ref.text.startsWith("As an additional cost to cast")) {
            return;
        }

        // always 1 ability (to cast)
        if (card.getAbilities().toArray().length == 1) { // all cards have 1 inner ability to cast
            fail(card, "abilities", "card's abilities is empty, but ref have text");
        }
    }

    private void checkTypes(Card card, JsonCard ref) {
        if (skipListHaveName("TYPE", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        Collection<String> expected = ref.types;
        List<String> type = new ArrayList<>();
        for (CardType cardType : card.getCardType()) {
            type.add(cardType.toString());
        }
        if (!eqSet(type, expected)) {
            fail(card, "types", type + " != " + expected);
        }
    }

    private static <T> boolean eqSet(Collection<T> a, Collection<T> b) {
        if (a == null || a.isEmpty()) {
            return b == null || b.isEmpty();
        }
        return b != null && a.size() == b.size() && a.containsAll(b);
    }

    private void checkPT(Card card, JsonCard ref) {
        if (skipListHaveName("PT", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        if (!eqPT(card.getPower().toString(), ref.power) || !eqPT(card.getToughness().toString(), ref.toughness)) {
            String pt = card.getPower() + "/" + card.getToughness();
            String expected = ref.power + '/' + ref.toughness;
            fail(card, "pt", pt + " != " + expected);
        }
    }

    private boolean eqPT(String found, String expected) {
        if (expected == null) {
            return "0".equals(found);
        } else {
            return found.equals(expected) || expected.contains("*");
        }
    }

    private void checkCost(Card card, JsonCard ref) {
        if (skipListHaveName("COST", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        String expected = ref.manaCost;
        String cost = join(card.getManaCost().getSymbols());
        if (cost != null && cost.isEmpty()) {
            cost = null;
        }
        if (cost != null) {
            cost = cost.replaceAll("P\\}", "P}");
        }
        if (!Objects.equals(cost, expected)) {
            fail(card, "cost", cost + " != " + expected);
        }
    }

    private void checkNumbers(Card card, JsonCard ref) {
        if (skipListHaveName("NUMBER", card.getExpansionSetCode(), card.getName())) {
            return;
        }

        String expected = ref.number;
        String current = card.getCardNumber();
        if (!eqPT(current, expected)) {
            warn(card, "card number " + current + " != " + expected);
        }
    }

    private boolean isBasicLandName(String name) {

        String checkName = name;
        if (name.startsWith("Snow-Covered ")) {
            // snow lands is basic lands too
            checkName = name.replace("Snow-Covered ", "");
        }

        return checkName.equals("Island")
                || checkName.equals("Forest")
                || checkName.equals("Swamp")
                || checkName.equals("Plains")
                || checkName.equals("Mountain")
                || checkName.equals("Wastes");
    }

    private void checkBasicLands(Card card, JsonCard ref) {

        // basic lands must have Rarity.LAND and SuperType.BASIC
        // other cards can't have that stats
        if (isBasicLandName(card.getName())) {
            // lands
            if (card.getRarity() != Rarity.LAND) {
                fail(card, "rarity", "basic land must be Rarity.LAND");
            }

            if (!card.getSuperType().contains(SuperType.BASIC)) {
                fail(card, "supertype", "basic land must be SuperType.BASIC");
            }
        } else {
            // non lands
            if (card.getRarity() == Rarity.LAND) {
                fail(card, "rarity", "only basic land can be Rarity.LAND");
            }

            if (card.getSuperType().contains(SuperType.BASIC)) {
                fail(card, "supertype", "only basic land can be SuperType.BASIC");
            }
        }
    }

    private String join(Iterable<?> items) {
        StringBuilder result = new StringBuilder();
        for (Object item : items) {
            result.append(item);
        }
        return result.toString();
    }

}