package net.knarcraft.paidsigns.utility;

import net.knarcraft.paidsigns.PaidSigns;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

/**
 * A helper class for providing common tab complete options
 */
public final class TabCompleteHelper {

    private TabCompleteHelper() {

    }

    /**
     * Finds tab complete values that contain the typed text
     *
     * @param values    <p>The values to filter</p>
     * @param typedText <p>The text the player has started typing</p>
     * @return <p>The given string values that contain the player's typed text</p>
     */
    public static List<String> filterMatchingContains(List<String> values, String typedText) {
        List<String> configValues = new ArrayList<>();
        for (String value : values) {
            if (value.toLowerCase().contains(typedText.toLowerCase())) {
                configValues.add(value);
            }
        }
        return configValues;
    }

    /**
     * Finds tab complete values that match the start of the typed text
     *
     * @param values    <p>The values to filter</p>
     * @param typedText <p>The text the player has started typing</p>
     * @return <p>The given string values that start with the player's typed text</p>
     */
    public static List<String> filterMatchingStartsWith(List<String> values, String typedText) {
        List<String> configValues = new ArrayList<>();
        for (String value : values) {
            if (value.toLowerCase().startsWith(typedText.toLowerCase())) {
                configValues.add(value);
            }
        }
        return configValues;
    }

    /**
     * Gets the available boolean values for tab completion
     *
     * @return <p>The available boolean values</p>
     */
    public static List<String> getBooleans() {
        List<String> booleans = new ArrayList<>();
        booleans.add("true");
        booleans.add("false");
        return booleans;
    }

    /**
     * Gets the available option states for tab completion
     *
     * @return <p>The available option states</p>
     */
    public static List<String> getOptionStates() {
        List<String> optionStates = getBooleans();
        optionStates.add("default");
        return optionStates;
    }

    /**
     * Gets the names of all registered paid signs
     *
     * @return <p>The names of all registered paid signs</p>
     */
    public static List<String> getPaidSignNames() {
        Set<String> paidSignNames = PaidSigns.getInstance().getSignManager().getAllPaidSigns().keySet();
        List<String> quotedNames = new ArrayList<>(paidSignNames.size());
        for (String paidSignName : paidSignNames) {
            quotedNames.add("\"" + paidSignName + "\"");
        }
        return quotedNames;
    }

    /**
     * Gets all the choices for lines on a sign
     *
     * @return <p>All the line indices of a sign</p>
     */
    public static List<String> getSignLines() {
        List<String> lines = new ArrayList<>();
        for (int i = 1; i < 5; i++) {
            lines.add(String.valueOf(i));
        }
        return lines;
    }

    /**
     * Gets some valid costs as example values
     *
     * @return <p>Some valid costs</p>
     */
    public static List<String> getCosts() {
        List<String> costs = new ArrayList<>();
        costs.add("1");
        costs.add("5");
        costs.add("10");
        costs.add("15");
        return costs;
    }

    /**
     * Gets some example paid sign names for auto-completion
     *
     * @return <p>Some example paid sign names</p>
     */
    public static List<String> getExamplePaidSignNames() {
        List<String> names = new ArrayList<>();
        names.add("sign1");
        names.add("\"lift up sign\"");
        names.add("\"lift down sign\"");
        return names;
    }

    /**
     * Gets some example condition matching strings for tab completion
     *
     * @return <p>Some example "stringToMatch" values</p>
     */
    public static List<String> getExampleConditionStrings() {
        List<String> conditionStrings = new ArrayList<>();
        conditionStrings.add("[Gate]");
        conditionStrings.add("\"[Lift Up]\"");
        conditionStrings.add("\"[Lift Down]\"");
        return conditionStrings;
    }

}