Let the blossom server decide which files can be attached

src/app/editor/index.ts

@@ -31,7 +31,7 @@ import ProfileSuggestion from "@app/editor/ProfileSuggestion.svelte"
 import {RoomReferenceExtension} from "@app/editor/RoomReferenceExtension"
 import RoomSuggestion from "@app/editor/RoomSuggestion.svelte"
 import {NativeClipboardPasteExtension} from "@app/editor/clipboard"
-import {UPLOAD_MIME_TYPES, compressFileForUpload, uploadFile} from "@app/uploads"
+import {compressFileForUpload, makeImetaTag, uploadFile} from "@app/uploads"
 import {userSpaceUrls} from "@app/rooms"
 import {PLATFORM_RELAYS} from "@app/env"
 import {pushToast} from "@app/toast"
@@ -132,6 +132,39 @@ export const makeEditor = async ({
     }
   }
 
+  // A file the editor has no node for is uploaded here instead, so its imeta has to join what
+  // the nostr extension collects off the document, and it has to hold `uploading` open itself.
+  const attachments: {url: string; tag: string[]}[] = []
+
+  let attaching = 0
+
+  const setUploading = () =>
+    uploading?.set(
+      attaching > 0 ||
+        ed.storage.fileUpload.uploader.getFiles().some((attrs: FileAttributes) => attrs.uploading),
+    )
+
+  const attachFile = async (editor: Editor, file: File) => {
+    attaching += 1
+    uploading?.set(true)
+
+    const {error, result} = await uploadFile(file, {url, encrypt: encryptFiles})
+
+    attaching -= 1
+    setUploading()
+
+    if (result) {
+      attachments.push({url: result.url, tag: makeImetaTag(file, result)})
+      editor
+        .chain()
+        .focus()
+        .insertContent({type: "text", text: result.url + " "})
+        .run()
+    } else {
+      pushToast({theme: "error", message: error})
+    }
+  }
+
   const ed = new Editor({
     content: typeof content === "string" ? escapeHtml(content) : content,
     editorProps,
@@ -154,36 +187,47 @@ export const makeEditor = async ({
           },
           fileUpload: {
             config: {
-              allowedMimeTypes: UPLOAD_MIME_TYPES,
+              allowedMimeTypes: ["*/*"],
               upload: async (attrs: FileAttributes) =>
                 uploadFile(await compressFileForUpload(attrs.file), {url, encrypt: encryptFiles}),
               onDrop: () => uploading?.set(true),
-              onComplete: () => uploading?.set(false),
+              onComplete: () => setUploading(),
               onUploadError(currentEditor, task) {
                 currentEditor.commands.removeFailedUploads()
                 pushToast({theme: "error", message: task.error})
-                uploading?.set(false)
+                setUploading()
               },
             },
             extend: {
               // The picker, a drop and a paste all reach the uploader through addFile, which
-              // refuses a type that isn't allowed above by returning false and saying nothing.
-              // Say it, or choosing the wrong file looks like the app simply ignored the click.
+              // only knows how to make an image or a video node. Everything else is uploaded on
+              // its own, so what you can attach is the server's call rather than a list here.
               onCreate() {
                 const {uploader} = this.storage
                 const addFile = uploader.addFile.bind(uploader)
 
                 uploader.addFile = (file: File, pos: number) => {
-                  const added = addFile(file, pos)
-
-                  if (!added) {
-                    pushToast({
-                      theme: "error",
-                      message: `${file.name} is not a type you can attach.`,
-                    })
+                  if (file.type.match(/^(image|video)\//)) {
+                    return addFile(file, pos)
                   }
 
-                  return added
+                  attachFile(this.editor, file)
+
+                  return true
+                }
+
+                // Paste filters by mime type before it ever reaches addFile.
+                uploader.handlePaste = (event: ClipboardEvent) => {
+                  const files = Array.from(event.clipboardData?.items || [])
+                    .filter(item => item.kind === "file")
+                    .map(item => item.getAsFile())
+                    .filter(Boolean) as File[]
+
+                  for (const file of files) {
+                    uploader.addFile(file, uploader.view.state.selection.from + 1)
+                  }
+
+                  return files.length > 0
                 }
               },
             },
@@ -268,5 +312,18 @@ export const makeEditor = async ({
   empty?.set(isEmpty(ed))
   text?.set(ed.getText({blockSeparator: "\n"}))
 
+  // Deleting the url an attachment was inserted as is how you remove it, since there is no node
+  // to delete.
+  const getEditorTags = ed.storage.nostr.getEditorTags
+
+  ed.storage.nostr.getEditorTags = (...args: unknown[]) => {
+    const content = ed.getText({blockSeparator: "\n"})
+
+    return [
+      ...getEditorTags(...args),
+      ...attachments.filter(({url}) => content.includes(url)).map(({tag}) => tag),
+    ]
+  }
+
   return ed
 }

src/app/share.ts

@@ -8,7 +8,6 @@ import {app, relays} from "@app/core"
 import {navigate, pushModal} from "@app/modal"
 import {makeSpaceChatPath} from "@app/routes"
 import {pushToast} from "@app/toast"
-import {UPLOAD_MIME_TYPES} from "@app/uploads"
 import ShareDialog from "@app/components/Share.svelte"
 import ShareEvent from "@app/components/ShareEvent.svelte"
 
@@ -64,10 +63,6 @@ export const shareFromNative = async ({
   if (text) {
     shareText(text)
   } else if (path) {
-    if (!UPLOAD_MIME_TYPES.includes(mimeType)) {
-      return pushToast({theme: "error", message: "Flotilla can't share that type of file."})
-    }
-
     try {
       const response = await fetch(Capacitor.convertFileSrc(path))
 

src/app/uploads.ts

@@ -2,7 +2,6 @@ import type {Maybe} from "@welshman/lib"
 import {first, normalizeUrl, parseJson, sha256, simpleCache} from "@welshman/lib"
 import {canUploadBlob, encryptFile, makeBlossomAuthEvent, uploadBlob} from "@welshman/util"
 import {Nip01Signer} from "@welshman/signer"
-import type {UploadTask} from "@welshman/editor"
 import {compressFile} from "@lib/html"
 import {app, blossomServerLists, relays} from "@app/core"
 import {DEFAULT_BLOSSOM_SERVERS} from "@app/env"
@@ -62,22 +61,6 @@ export const getBlossomServer = async (options: GetBlossomServerOptions = {}) =>
   return first(DEFAULT_BLOSSOM_SERVERS)!
 }
 
-// The editor's default list leaves out the formats an iPhone camera actually produces, so
-// anything shared from Photos would be rejected without a word. Heic gets re-encoded by the
-// compressor on its way to a blossom server; quicktime is uploaded as-is.
-export const UPLOAD_MIME_TYPES = [
-  "image/jpeg",
-  "image/png",
-  "image/gif",
-  "image/webp",
-  "image/heic",
-  "image/heif",
-  "video/mp4",
-  "video/mpeg",
-  "video/webm",
-  "video/quicktime",
-]
-
 export type CompressFileOptions = {
   maxWidth?: number
   maxHeight?: number
@@ -94,9 +77,38 @@ export type UploadFileOptions = {
   encrypt?: boolean
 }
 
+export type UploadResult = {
+  url: string
+  sha256: string
+  tags: string[][]
+}
+
 export type UploadFileResult = {
   error?: string
-  result?: UploadTask
+  result?: UploadResult
+}
+
+// Mirrors the imeta the editor builds for the media it holds as a node, for the files it
+// doesn't.
+export const makeImetaTag = (file: File, result: UploadResult) => {
+  const meta: Record<string, string> = {
+    url: result.url,
+    x: result.sha256,
+    ox: result.sha256,
+    m: file.type,
+    size: String(file.size),
+  }
+
+  for (const [k, v] of result.tags) {
+    meta[k] = v
+  }
+
+  return [
+    "imeta",
+    ...Object.entries(meta)
+      .map(entry => entry.join(" "))
+      .sort(),
+  ]
 }
 
 export const uploadFile = async (file: File, options: UploadFileOptions = {}) => {
@@ -119,12 +131,31 @@ export const uploadFile = async (file: File, options: UploadFileOptions = {}) =>
       })
     }
 
-    const ext = "." + type.split("/")[1]
+    // A subtype worth putting on a url is a plain word. Anything else (an office document, a
+    // file the platform gave no type at all) keeps whatever the server named it.
+    const [, subtype = ""] = type.split("/")
+    const ext = /^[a-z0-9]+$/.test(subtype) ? "." + subtype : ""
     const server = await getBlossomServer(options)
     const hashes = [await sha256(await file.arrayBuffer())]
     const $signer = app.get().user?.signer || Nip01Signer.ephemeral()
     const authTemplate = makeBlossomAuthEvent({action: "upload", server, hashes})
     const authEvent = await $signer.sign(authTemplate)
+
+    // What a server takes is its own business, so ask before spending the upload. A 404 or a
+    // 405 is a server that doesn't implement BUD-06 rather than one saying no.
+    const check = await canUploadBlob(server, {
+      authEvent,
+      headers: {
+        "X-Content-Type": file.type,
+        "X-Content-Length": String(file.size),
+        "X-SHA-256": hashes[0],
+      },
+    })
+
+    if (![200, 404, 405].includes(check.status)) {
+      return {error: check.headers.get("X-Reason") || `${name} was refused (HTTP ${check.status})`}
+    }
+
     const res = await uploadBlob(server, file, {authEvent})
     const text = await res.text()