upload spoiler attachments as spoilers

d2m/converters/message-to-event.js

@@ -247,8 +247,19 @@ async function messageToEvent(message, guild, options = {}, di) {
 			: attachment.content_type?.startsWith("text/") ? "📝"
 			: attachment.content_type?.startsWith("audio/") ? "🎶"
 			: "📄"
+		// no native media spoilers in Element, so we'll post a link instead, forcing it to not preview using a blockquote
+		if (attachment.filename.startsWith("SPOILER_")) {
+			return {
+				$type: "m.room.message",
+				"m.mentions": mentions,
+				msgtype: "m.text",
+				body: `${emoji} Uploaded SPOILER file: ${attachment.url} (${pb(attachment.size)})`,
+				format: "org.matrix.custom.html",
+				formatted_body: `<blockquote>${emoji} Uploaded SPOILER file: <span data-mx-spoiler><a href="${attachment.url}">View</a></span> (${pb(attachment.size)})</blockquote>`
+			}
+		}
 		// for large files, always link them instead of uploading so I don't use up all the space in the content repo
-		if (attachment.size > reg.ooye.max_file_size) {
+		else if (attachment.size > reg.ooye.max_file_size) {
 			return {
 				$type: "m.room.message",
 				"m.mentions": mentions,

d2m/converters/message-to-event.test.js

@@ -104,6 +104,18 @@ test("message2event: attachment with no content", async t => {
 	}])
 })
 
+test("message2event: spoiler attachment", async t => {
+	const events = await messageToEvent(data.message.spoiler_attachment, data.guild.general, {})
+	t.deepEqual(events, [{
+		$type: "m.room.message",
+		"m.mentions": {},
+		msgtype: "m.text",
+		body: "📄 Uploaded SPOILER file: https://cdn.discordapp.com/attachments/1100319550446252084/1147465564307079258/SPOILER_69-GNDP-CADENCE.nfs.gci (74 KB)",
+		format: "org.matrix.custom.html",
+		formatted_body: "<blockquote>📄 Uploaded SPOILER file: <span data-mx-spoiler><a href=\"https://cdn.discordapp.com/attachments/1100319550446252084/1147465564307079258/SPOILER_69-GNDP-CADENCE.nfs.gci\">View</a></span> (74 KB)</blockquote>"
+	}])
+})
+
 test("message2event: stickers", async t => {
 	const events = await messageToEvent(data.message.sticker, data.guild.general, {})
 	t.deepEqual(events, [{

test/data.js

@@ -531,6 +531,44 @@ module.exports = {
 			flags: 0,
 			components: []
 		},
+		spoiler_attachment: {
+			type: 0,
+			tts: false,
+			timestamp: '2023-09-02T09:38:29.480000+00:00',
+			referenced_message: null,
+			pinned: false,
+			nonce: '1147465562901708800',
+			mentions: [],
+			mention_roles: [],
+			mention_everyone: false,
+			id: '1147465564600676383',
+			flags: 0,
+			embeds: [],
+			edited_timestamp: null,
+			content: '',
+			components: [],
+			channel_id: '1100319550446252084',
+			author: {
+				username: 'cadence.worm',
+				public_flags: 0,
+				id: '772659086046658620',
+				global_name: 'cadence',
+				discriminator: '0',
+				avatar_decoration_data: null,
+				avatar: '4b5c4b28051144e4c111f0113a0f1cf1'
+			},
+			attachments: [
+				{
+					url: 'https://cdn.discordapp.com/attachments/1100319550446252084/1147465564307079258/SPOILER_69-GNDP-CADENCE.nfs.gci',
+					size: 73792,
+					proxy_url: 'https://media.discordapp.net/attachments/1100319550446252084/1147465564307079258/SPOILER_69-GNDP-CADENCE.nfs.gci',
+					id: '1147465564307079258',
+					flags: 8,
+					filename: 'SPOILER_69-GNDP-CADENCE.nfs.gci'
+				}
+			],
+			guild_id: '1100319549670301727'
+		},
 		skull_webp_attachment_with_content: {
 			type: 0,
 			tts: false,