1 files changed, 90 insertions, 0 deletions
diff --git a/src/view/com/composer/useExternalLinkFetch.ts b/src/view/com/composer/useExternalLinkFetch.ts
new file mode 100644
index 000000000..75f833e84
--- /dev/null
+++ b/src/view/com/composer/useExternalLinkFetch.ts
@@ -0,0 +1,90 @@
+import {useState, useEffect} from 'react'
+import {useStores} from 'state/index'
+import * as apilib from 'lib/api/index'
+import {getLinkMeta} from 'lib/link-meta/link-meta'
+import {getPostAsQuote} from 'lib/link-meta/bsky'
+import {downloadAndResize} from 'lib/media/manip'
+import {isBskyPostUrl} from 'lib/strings/url-helpers'
+import {ComposerOpts} from 'state/models/shell-ui'
+
+export function useExternalLinkFetch({
+  setQuote,
+}: {
+  setQuote: (opts: ComposerOpts['quote']) => void
+}) {
+  const store = useStores()
+  const [extLink, setExtLink] = useState<apilib.ExternalEmbedDraft | undefined>(
+    undefined,
+  )
+
+  useEffect(() => {
+    let aborted = false
+    const cleanup = () => {
+      aborted = true
+    }
+    if (!extLink) {
+      return cleanup
+    }
+    if (!extLink.meta) {
+      if (isBskyPostUrl(extLink.uri)) {
+        getPostAsQuote(store, extLink.uri).then(
+          newQuote => {
+            if (aborted) {
+              return
+            }
+            setQuote(newQuote)
+            setExtLink(undefined)
+          },
+          err => {
+            store.log.error('Failed to fetch post for quote embedding', {err})
+            setExtLink(undefined)
+          },
+        )
+      } else {
+        getLinkMeta(store, extLink.uri).then(meta => {
+          if (aborted) {
+            return
+          }
+          setExtLink({
+            uri: extLink.uri,
+            isLoading: !!meta.image,
+            meta,
+          })
+        })
+      }
+      return cleanup
+    }
+    if (extLink.isLoading && extLink.meta?.image && !extLink.localThumb) {
+      console.log('attempting download')
+      downloadAndResize({
+        uri: extLink.meta.image,
+        width: 2000,
+        height: 2000,
+        mode: 'contain',
+        maxSize: 1000000,
+        timeout: 15e3,
+      })
+        .catch(() => undefined)
+        .then(localThumb => {
+          if (aborted) {
+            return
+          }
+          setExtLink({
+            ...extLink,
+            isLoading: false, // done
+            localThumb,
+          })
+        })
+      return cleanup
+    }
+    if (extLink.isLoading) {
+      setExtLink({
+        ...extLink,
+        isLoading: false, // done
+      })
+    }
+    return cleanup
+  }, [store, extLink, setQuote])
+
+  return {extLink, setExtLink}
+}