Add missing review system classes.

src/main/java/com/eternalcode/discordapp/review/database/GitHubReviewMentionRepository.java

@@ -0,0 +1,12 @@
+package com.eternalcode.discordapp.review.database;
+
+import com.eternalcode.discordapp.review.GitHubPullRequest;
+import java.util.concurrent.CompletableFuture;
+
+public interface GitHubReviewMentionRepository {
+
+    CompletableFuture<Void> markReviewerAsMentioned(GitHubPullRequest pullRequest, long userId);
+
+    CompletableFuture<Boolean> isMentioned(GitHubPullRequest pullRequest, long userId);
+
+}

src/main/java/com/eternalcode/discordapp/review/database/GitHubReviewMentionRepositoryImpl.java

@@ -0,0 +1,58 @@
+package com.eternalcode.discordapp.review.database;
+
+import com.eternalcode.discordapp.database.DataAccessException;
+import com.eternalcode.discordapp.database.DatabaseManager;
+import com.eternalcode.discordapp.database.repository.AbstractRepository;
+import com.eternalcode.discordapp.review.GitHubPullRequest;
+import com.j256.ormlite.table.TableUtils;
+import io.sentry.Sentry;
+import java.sql.SQLException;
+import java.time.Duration;
+import java.time.Instant;
+import java.util.concurrent.CompletableFuture;
+
+public class GitHubReviewMentionRepositoryImpl extends AbstractRepository<GitHubReviewMentionWrapper, String>
+        implements GitHubReviewMentionRepository {
+
+    private static final Duration MENTION_INTERVAL = Duration.ofHours(12);
+
+    public GitHubReviewMentionRepositoryImpl(DatabaseManager databaseManager) {
+        super(databaseManager, GitHubReviewMentionWrapper.class);
+    }
+
+    public static GitHubReviewMentionRepository create(DatabaseManager databaseManager) {
+        try {
+            TableUtils.createTableIfNotExists(databaseManager.getConnectionSource(), GitHubReviewMentionWrapper.class);
+        }
+        catch (SQLException sqlException) {
+            Sentry.captureException(sqlException);
+            throw new DataAccessException("Failed to create table", sqlException);
+        }
+
+        return new GitHubReviewMentionRepositoryImpl(databaseManager);
+    }
+
+    @Override
+    public CompletableFuture<Void> markReviewerAsMentioned(GitHubPullRequest pullRequest, long userId) {
+        return CompletableFuture.runAsync(() -> {
+            GitHubReviewMentionWrapper mention =
+                    GitHubReviewMentionWrapper.create(pullRequest.toUrl(), userId, Instant.now());
+            this.save(mention);
+        });
+    }
+
+    @Override
+    public CompletableFuture<Boolean> isMentioned(GitHubPullRequest pullRequest, long userId) {
+        return this.select(pullRequest.toUrl()).thenApply(mentionOptional -> {
+            if (mentionOptional.isEmpty()) {
+                return false;
+            }
+
+            GitHubReviewMentionWrapper mention = mentionOptional.get();
+            Instant lastMention = mention.getLastMention();
+            Instant nextMention = lastMention.plus(MENTION_INTERVAL);
+
+            return nextMention.isAfter(Instant.now());
+        });
+    }
+}

src/main/java/com/eternalcode/discordapp/review/database/GitHubReviewMentionWrapper.java

@@ -0,0 +1,44 @@
+package com.eternalcode.discordapp.review.database;
+
+import com.j256.ormlite.field.DatabaseField;
+import com.j256.ormlite.table.DatabaseTable;
+import java.time.Instant;
+
+@DatabaseTable(tableName = "review_mentions")
+public final class GitHubReviewMentionWrapper {
+
+    @DatabaseField(id = true)
+    private String pullRequest;
+
+    @DatabaseField
+    private long userId;
+
+    @DatabaseField
+    private long lastMention;
+
+    public GitHubReviewMentionWrapper() {
+    }
+
+    private GitHubReviewMentionWrapper(String pullRequest, long userId, long lastMention) {
+        this.pullRequest = pullRequest;
+        this.userId = userId;
+        this.lastMention = lastMention;
+    }
+
+    public static GitHubReviewMentionWrapper create(String pullRequest, long userId, Instant lastMention) {
+        return new GitHubReviewMentionWrapper(pullRequest, userId, lastMention.toEpochMilli());
+    }
+
+    public String getPullRequest() {
+        return this.pullRequest;
+    }
+
+    public long getUserId() {
+        return this.userId;
+    }
+
+    public Instant getLastMention() {
+        return Instant.ofEpochMilli(this.lastMention);
+    }
+
+}