Migrate Post to new Plugin structure

backend/src/plugins/Post/util/scheduledPostLoop.ts

@@ -0,0 +1,82 @@
+import { PluginData } from "knub";
+import { PostPluginType } from "../types";
+import { logger } from "src/logger";
+import { stripObjectToScalars, DBDateFormat, SECONDS } from "src/utils";
+import { LogType } from "src/data/LogType";
+import moment from "moment-timezone";
+import { TextChannel, User } from "eris";
+import { postMessage } from "./postMessage";
+
+const SCHEDULED_POST_CHECK_INTERVAL = 5 * SECONDS;
+
+export async function scheduledPostLoop(pluginData: PluginData<PostPluginType>) {
+  const duePosts = await pluginData.state.scheduledPosts.getDueScheduledPosts();
+  for (const post of duePosts) {
+    const channel = pluginData.guild.channels.get(post.channel_id);
+    if (channel instanceof TextChannel) {
+      const [username, discriminator] = post.author_name.split("#");
+      const author: Partial<User> = pluginData.client.users.get(post.author_id) || {
+        id: post.author_id,
+        username,
+        discriminator,
+      };
+
+      try {
+        const postedMessage = await postMessage(
+          pluginData,
+          channel,
+          post.content,
+          post.attachments,
+          post.enable_mentions,
+        );
+        pluginData.state.logs.log(LogType.POSTED_SCHEDULED_MESSAGE, {
+          author: stripObjectToScalars(author),
+          channel: stripObjectToScalars(channel),
+          messageId: postedMessage.id,
+        });
+      } catch (e) {
+        pluginData.state.logs.log(LogType.BOT_ALERT, {
+          body: `Failed to post scheduled message by {userMention(author)} to {channelMention(channel)}`,
+          channel: stripObjectToScalars(channel),
+          author: stripObjectToScalars(author),
+        });
+        logger.warn(
+          `Failed to post scheduled message to #${channel.name} (${channel.id}) on ${pluginData.guild.name} (${pluginData.guild.id})`,
+        );
+      }
+    }
+
+    let shouldClear = true;
+
+    if (post.repeat_interval) {
+      const nextPostAt = moment().add(post.repeat_interval, "ms");
+
+      if (post.repeat_until) {
+        const repeatUntil = moment(post.repeat_until, DBDateFormat);
+        if (nextPostAt.isSameOrBefore(repeatUntil)) {
+          await pluginData.state.scheduledPosts.update(post.id, {
+            post_at: nextPostAt.format(DBDateFormat),
+          });
+          shouldClear = false;
+        }
+      } else if (post.repeat_times) {
+        if (post.repeat_times > 1) {
+          await pluginData.state.scheduledPosts.update(post.id, {
+            post_at: nextPostAt.format(DBDateFormat),
+            repeat_times: post.repeat_times - 1,
+          });
+          shouldClear = false;
+        }
+      }
+    }
+
+    if (shouldClear) {
+      await pluginData.state.scheduledPosts.delete(post.id);
+    }
+  }
+
+  pluginData.state.scheduledPostLoopTimeout = setTimeout(
+    () => scheduledPostLoop(pluginData),
+    SCHEDULED_POST_CHECK_INTERVAL,
+  );
+}