From 1067c1d50628ca2fc12d42c0e68e116b886ce86f Mon Sep 17 00:00:00 2001
From: Supinic <supinic@protonmail.com>
Date: Sun, 17 Nov 2024 17:57:54 +0100
Subject: [PATCH] `$subscribe` - add Brighter Shores (#109)

---
 .../subscribe/event-types/brighter-shores.js  | 63 +++++++++++++++++++
 commands/subscribe/event-types/index.js       |  1 +
 commands/subscribe/event_subscription.sql     |  5 +-
 3 files changed, 66 insertions(+), 3 deletions(-)
 create mode 100644 commands/subscribe/event-types/brighter-shores.js

diff --git a/commands/subscribe/event-types/brighter-shores.js b/commands/subscribe/event-types/brighter-shores.js
new file mode 100644
index 000000000..c278b847d
--- /dev/null
+++ b/commands/subscribe/event-types/brighter-shores.js
@@ -0,0 +1,63 @@
+const { parseRSS } = require("../../../utils/command-utils.js");
+
+const url = "https://brightershores.pro/rss.xml";
+const BRIGHTER_SHORES_LAST_UPDATE_DATE = "brighter-shores-last-update-date";
+
+module.exports = {
+	name: "Brighter Shores",
+	aliases: ["BS", "brighter shores"],
+	notes: "Posts update news about Brighter Shores",
+	channelSpecificMention: true,
+	response: {
+		added: "You will now be pinged whenever a new BS update is published.",
+		removed: "You will no longer receive pings when a new BS update is published."
+	},
+	generic: true,
+	cronExpression: "0 */5 * * * *",
+	subName: "BS update",
+	type: "custom",
+	process: async () => {
+		const response = await sb.Got.get("GenericAPI")({
+			url,
+			responseType: "text",
+			throwHttpErrors: true
+		});
+
+		if (!response.ok) {
+			return;
+		}
+
+		const data = await parseRSS(response.body);
+		const eligibleUpdates = data.items
+			.filter(i => i.link.includes("updates"))
+			.sort((a, b) => new sb.Date(b.isoDate) - new sb.Date(a.isoDate));
+
+		const previousUpdateDateString = await sb.Cache.getByPrefix(BRIGHTER_SHORES_LAST_UPDATE_DATE)
+		if (!previousUpdateDateString) {
+			// If there is no date, attempt to populate the latest one, and do not post a notification (first time only)
+			if (eligibleUpdates.length === 0) { // If there are no updates, do nothing and wait for a later update
+				return;
+			}
+
+			await sb.Cache.setByPrefix(BRIGHTER_SHORES_LAST_UPDATE_DATE, eligibleUpdates[0].isoDate);
+			return;
+		}
+
+		const previousUpdateDate = new sb.Date(previousUpdateDateString)
+		const newUpdates = eligibleUpdates.filter(i => new sb.Date(i.isoDate) > previousUpdateDate);
+		if (newUpdates.length === 0) { // No new updates, do nothing
+			return;
+		}
+
+		await sb.Cache.setByPrefix(BRIGHTER_SHORES_LAST_UPDATE_DATE, newUpdates[0].isoDate, {
+			expiry: 14 * 864e5 // 14 days
+		});
+
+		const updateString = newUpdates.map(i => `${i.title} ${i.link}`).join(" -- ");
+		const noun = (newUpdates.length === 1) ? "update" : "updates";
+
+		return {
+			message: `New Brighter Shores ${noun}! ${updateString}`
+		};
+	}
+};
diff --git a/commands/subscribe/event-types/index.js b/commands/subscribe/event-types/index.js
index 130ca6c2e..7774aa641 100644
--- a/commands/subscribe/event-types/index.js
+++ b/commands/subscribe/event-types/index.js
@@ -1,4 +1,5 @@
 const eventTypeFileList = [
+	"brighter-shores",
 	"bun",
 	"changelog",
 	"channel-live",
diff --git a/commands/subscribe/event_subscription.sql b/commands/subscribe/event_subscription.sql
index ace7f31ce..ee6f13b6d 100644
--- a/commands/subscribe/event_subscription.sql
+++ b/commands/subscribe/event_subscription.sql
@@ -12,10 +12,9 @@ CREATE TABLE IF NOT EXISTS `data`.`Event_Subscription` (
 	PRIMARY KEY (`ID`) USING BTREE,
 	UNIQUE INDEX `User_Alias_Event` (`User_Alias`, `Type`) USING BTREE,
 	INDEX `FK_Event_Subscription_Channel` (`Channel`) USING BTREE,
-	INDEX `FK_Event_Subscription_chat_data.Platform` (`Platform`) USING BTREE,
+	INDEX `Event_Subscription_chat_data.Platform` (`Platform`) USING BTREE,
 	CONSTRAINT `Event_Subscription_ibfk_1` FOREIGN KEY (`Channel`) REFERENCES `chat_data`.`Channel` (`ID`) ON UPDATE CASCADE ON DELETE CASCADE,
-	CONSTRAINT `Event_Subscription_ibfk_2` FOREIGN KEY (`User_Alias`) REFERENCES `chat_data`.`User_Alias` (`ID`) ON UPDATE CASCADE ON DELETE CASCADE,
-	CONSTRAINT `Event_Subscription_ibfk_3` FOREIGN KEY (`Platform`) REFERENCES `chat_data`.`Platform` (`ID`) ON UPDATE CASCADE ON DELETE CASCADE
+	CONSTRAINT `Event_Subscription_ibfk_2` FOREIGN KEY (`User_Alias`) REFERENCES `chat_data`.`User_Alias` (`ID`) ON UPDATE CASCADE ON DELETE CASCADE
 )
 CHARSET=utf8mb4
 COLLATE='utf8mb4_general_ci'