oopsie

src/main/java/cc/fascinated/bat/common/TimeUtils.java

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+package cc.fascinated.bat.common;
+
+import lombok.*;
+import lombok.experimental.UtilityClass;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.concurrent.TimeUnit;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * @author Fascinated (fascinated7)
+ */
+@UtilityClass
+public final class TimeUtils {
+    /**
+     * Format a time in millis to a readable time format.
+     *
+     * @param millis the millis to format
+     * @return the formatted time
+     */
+    public static String format(long millis) {
+        return format(millis, BatTimeFormat.FIT);
+    }
+
+    /**
+     * Format a time in millis to a readable time format.
+     *
+     * @param millis   the millis to format
+     * @param timeUnit the time unit to format the millis to
+     * @return the formatted time
+     */
+    public static String format(long millis, BatTimeFormat timeUnit) {
+        return format(millis, timeUnit, false);
+    }
+
+    /**
+     * Format a time in millis to a readable time format.
+     *
+     * @param millis   the millis to format
+     * @param timeUnit the time unit to format the millis to
+     * @param compact  whether to use a compact display
+     * @return the formatted time
+     */
+    public static String format(long millis, BatTimeFormat timeUnit, boolean compact) {
+        return format(millis, timeUnit, true, compact);
+    }
+
+    /**
+     * Format a time in millis to a readable time format.
+     *
+     * @param millis   the millis to format
+     * @param timeUnit the time unit to format the millis to
+     * @param decimals whether to include decimals
+     * @param compact  whether to use a compact display
+     * @return the formatted time
+     */
+    public static String format(long millis, BatTimeFormat timeUnit, boolean decimals, boolean compact) {
+        if (millis == -1L) { // Format permanent
+            return "Perm" + (compact ? "" : "anent");
+        }
+        // Format the time to the best fitting time unit
+        if (timeUnit == BatTimeFormat.FIT) {
+            for (BatTimeFormat otherTimeUnit : BatTimeFormat.VALUES) {
+                if (otherTimeUnit != BatTimeFormat.FIT && millis >= otherTimeUnit.getMillis()) {
+                    timeUnit = otherTimeUnit;
+                    break;
+                }
+            }
+        }
+        double time = MathUtils.format((double) millis / timeUnit.getMillis(), 1); // Format the time
+        if (!decimals) { // Remove decimals
+            time = (int) time;
+        }
+        String formatted = time + (compact ? timeUnit.getSuffix() : " " + timeUnit.getDisplay()); // Append the time unit
+        if (time != 1.0 && !compact) { // Pluralize the time unit
+            formatted += "s";
+        }
+        return formatted;
+    }
+
+    /**
+     * Convert the given input into a time in millis.
+     * <p>
+     * E.g: 1d, 1h, 1d1h, etc
+     * </p>
+     *
+     * @param input the input to parse
+     * @return the time in millis
+     */
+    public static long fromString(String input) {
+        Matcher matcher = BatTimeFormat.SUFFIX_PATTERN.matcher(input); // Match the given input
+        long millis = 0; // The total millis
+
+        // Match corresponding suffixes and add up the total millis
+        while (matcher.find()) {
+            int amount = Integer.parseInt(matcher.group(1)); // The amount of time to add
+            String suffix = matcher.group(2); // The unit suffix
+            BatTimeFormat timeUnit = BatTimeFormat.fromSuffix(suffix); // The time unit to add
+            if (timeUnit != null) { // Increment the total millis
+                millis += amount * timeUnit.getMillis();
+            }
+        }
+        return millis;
+    }
+
+    /**
+     * Represents a unit of time.
+     */
+    @NoArgsConstructor
+    @AllArgsConstructor
+    @Getter(AccessLevel.PRIVATE)
+    @ToString
+    public enum BatTimeFormat {
+        FIT,
+        YEARS("Year", "y", TimeUnit.DAYS.toMillis(365L)),
+        MONTHS("Month", "mo", TimeUnit.DAYS.toMillis(30L)),
+        WEEKS("Week", "w", TimeUnit.DAYS.toMillis(7L)),
+        DAYS("Day", "d", TimeUnit.DAYS.toMillis(1L)),
+        HOURS("Hour", "h", TimeUnit.HOURS.toMillis(1L)),
+        MINUTES("Minute", "m", TimeUnit.MINUTES.toMillis(1L)),
+        SECONDS("Second", "s", TimeUnit.SECONDS.toMillis(1L)),
+        MILLISECONDS("Millisecond", "ms", 1L);
+
+        /**
+         * Our cached unit values.
+         */
+        public static final BatTimeFormat[] VALUES = values();
+
+        /**
+         * Our cached suffix pattern.
+         */
+        public static final Pattern SUFFIX_PATTERN = Pattern.compile("(\\d+)(mo|ms|[ywdhms])");
+
+        /**
+         * The display of this time unit.
+         */
+        private String display;
+
+        /**
+         * The suffix of this time unit.
+         */
+        private String suffix;
+
+        /**
+         * The amount of millis in this time unit.
+         */
+        private long millis;
+
+        /**
+         * Get the time unit with the given suffix.
+         *
+         * @param suffix the time unit suffix
+         * @return the time unit, null if not found
+         */
+        @Nullable
+        public static BatTimeFormat fromSuffix(String suffix) {
+            for (BatTimeFormat unit : VALUES) {
+                if (unit != FIT && unit.getSuffix().equals(suffix)) {
+                    return unit;
+                }
+            }
+            return null;
+        }
+    }
+}