feat: add birthday system

src/modules/postBirthdays.ts

@@ -0,0 +1,41 @@
+import { ExtendedClient } from "../interfaces/ExtendedClient";
+import { errorHandler } from "../utils/errorHandler";
+
+/**
+ * Fetches the configs from the database, then for each config that
+ * has a birthday channel set, fetch birthdays. If any are from today,
+ * post!
+ *
+ * @param {ExtendedClient} bot The bot's Discord instance.
+ */
+export const postBirthdays = async (bot: ExtendedClient) => {
+  try {
+    const configs = await bot.db.configs.findMany();
+    const withChannel = configs.filter((c) => c.birthdayChannel);
+    for (const record of withChannel) {
+      const guild = bot.guilds.cache.get(record.serverId);
+      if (!guild) {
+        continue;
+      }
+      const channel = guild.channels.cache.get(record.birthdayChannel);
+      if (!channel || !("send" in channel)) {
+        continue;
+      }
+
+      const hasBirthdaySet = await bot.db.birthdays.findMany({
+        where: { serverId: guild.id }
+      });
+      const today = new Date();
+      const todayIn2000 = new Date(
+        `2000-${today.getMonth() + 1}-${today.getDate()}`
+      );
+      const isBirthdayToday = hasBirthdaySet.filter(
+        (r) => r.birthday === todayIn2000
+      );
+      const names = isBirthdayToday.map((r) => `<@${r.userId}>`).join(", ");
+      await channel.send(`Happy birthday to these lovely people~!\n${names}`);
+    }
+  } catch (err) {
+    await errorHandler(bot, "post birthdays", err);
+  }
+};

src/modules/subcommands/config/handleBirthdayChannel.ts

@@ -0,0 +1,52 @@
+import { PermissionFlagsBits } from "discord.js";
+
+import { CommandHandler } from "../../../interfaces/CommandHandler";
+import { errorHandler } from "../../../utils/errorHandler";
+import { setConfig } from "../../data/setConfig";
+
+/**
+ * Sets the birthday channel for the server.
+ */
+export const handleBirthdayChannel: CommandHandler = async (
+  bot,
+  interaction
+) => {
+  try {
+    const channel = interaction.options.getChannel("channel", true);
+    if (!("send" in channel)) {
+      await interaction.editReply({
+        content: "You must specify a text channel!"
+      });
+      return;
+    }
+    const me = await interaction.guild.members.fetchMe();
+    if (!me.permissionsIn(channel).has(PermissionFlagsBits.SendMessages)) {
+      await interaction.editReply({
+        content: "I can't send messages there. :c"
+      });
+      return;
+    }
+
+    const success = await setConfig(
+      bot,
+      interaction.guild.id,
+      "birthdayChannel",
+      channel.id
+    );
+
+    if (success) {
+      await interaction.editReply({
+        content: `Birthdays will be posted in ${channel.toString()}. Members can set their birthdays with the \`/birthday\` command.`
+      });
+      return;
+    }
+    await interaction.editReply({
+      content: "Failed to set the settings."
+    });
+  } catch (err) {
+    const id = await errorHandler(bot, "automod logging subcommand", err);
+    await interaction.editReply({
+      content: `Something went wrong. Please [join our support server](https://chat.naomi.lgbt) and provide this ID: \`${id}\``
+    });
+  }
+};