Support uploading and downloading message attachments (#13)

src/windows/room/chat.rs

@@ -1,11 +1,21 @@
+use std::borrow::Cow;
+use std::ffi::OsStr;
+use std::fs;
+use std::path::{Path, PathBuf};
+
 use matrix_sdk::{
+    attachment::AttachmentConfig,
+    media::{MediaFormat, MediaRequest},
     room::Room as MatrixRoom,
-    ruma::{OwnedRoomId, RoomId},
+    ruma::{
+        events::room::message::{MessageType, RoomMessageEventContent, TextMessageEventContent},
+        OwnedRoomId,
+        RoomId,
+    },
 };
 
-use modalkit::tui::{buffer::Buffer, layout::Rect, widgets::StatefulWidget};
-
 use modalkit::{
+    tui::{buffer::Buffer, layout::Rect, widgets::StatefulWidget},
     widgets::textbox::{TextBox, TextBoxState},
     widgets::TerminalCursor,
     widgets::{PromptActions, WindowOps},
@@ -18,10 +28,12 @@ use modalkit::editing::{
         EditResult,
         Editable,
         EditorAction,
+        InfoMessage,
         Jumpable,
         PromptAction,
         Promptable,
         Scrollable,
+        UIError,
     },
     base::{CloseFlags, Count, MoveDir1D, PositionList, ScrollStyle, WordStyle},
     context::Resolve,
@@ -32,14 +44,19 @@ use modalkit::editing::{
 use crate::base::{
     IambAction,
     IambBufferId,
+    IambError,
     IambInfo,
     IambResult,
+    MessageAction,
     ProgramAction,
     ProgramContext,
     ProgramStore,
     RoomFocus,
+    SendAction,
 };
 
+use crate::message::{Message, MessageContent, MessageTimeStamp};
+
 use super::scrollback::{Scrollback, ScrollbackState};
 
 pub struct ChatState {
@@ -75,6 +92,169 @@ impl ChatState {
         }
     }
 
+    pub async fn message_command(
+        &mut self,
+        act: MessageAction,
+        _: ProgramContext,
+        store: &mut ProgramStore,
+    ) -> IambResult<EditInfo> {
+        let client = &store.application.worker.client;
+
+        let settings = &store.application.settings;
+        let info = store.application.rooms.entry(self.room_id.clone()).or_default();
+
+        let msg = self.scrollback.get_mut(info).ok_or(IambError::NoSelectedMessage)?;
+
+        match act {
+            MessageAction::Download(filename, force) => {
+                if let MessageContent::Original(ev) = &msg.content {
+                    let media = client.media();
+
+                    let mut filename = match filename {
+                        Some(f) => PathBuf::from(f),
+                        None => settings.dirs.downloads.clone(),
+                    };
+
+                    let source = match &ev.msgtype {
+                        MessageType::Audio(c) => {
+                            if filename.is_dir() {
+                                filename.push(c.body.as_str());
+                            }
+
+                            c.source.clone()
+                        },
+                        MessageType::File(c) => {
+                            if filename.is_dir() {
+                                if let Some(name) = &c.filename {
+                                    filename.push(name);
+                                } else {
+                                    filename.push(c.body.as_str());
+                                }
+                            }
+
+                            c.source.clone()
+                        },
+                        MessageType::Image(c) => {
+                            if filename.is_dir() {
+                                filename.push(c.body.as_str());
+                            }
+
+                            c.source.clone()
+                        },
+                        MessageType::Video(c) => {
+                            if filename.is_dir() {
+                                filename.push(c.body.as_str());
+                            }
+
+                            c.source.clone()
+                        },
+                        _ => {
+                            return Err(IambError::NoAttachment.into());
+                        },
+                    };
+
+                    if !force && filename.exists() {
+                        let msg = format!(
+                            "The file {} already exists; use :download! to overwrite it.",
+                            filename.display()
+                        );
+                        let err = UIError::Failure(msg);
+
+                        return Err(err);
+                    }
+
+                    let req = MediaRequest { source, format: MediaFormat::File };
+
+                    let bytes =
+                        media.get_media_content(&req, true).await.map_err(IambError::from)?;
+
+                    fs::write(filename.as_path(), bytes.as_slice())?;
+
+                    msg.downloaded = true;
+
+                    let info = InfoMessage::from(format!(
+                        "Attachment downloaded to {}",
+                        filename.display()
+                    ));
+
+                    return Ok(info.into());
+                }
+
+                Err(IambError::NoAttachment.into())
+            },
+        }
+    }
+
+    pub async fn send_command(
+        &mut self,
+        act: SendAction,
+        _: ProgramContext,
+        store: &mut ProgramStore,
+    ) -> IambResult<EditInfo> {
+        let room = store
+            .application
+            .worker
+            .client
+            .get_joined_room(self.id())
+            .ok_or(IambError::NotJoined)?;
+
+        let (event_id, msg) = match act {
+            SendAction::Submit => {
+                let msg = self.tbox.get_text();
+
+                if msg.is_empty() {
+                    return Ok(None);
+                }
+
+                let msg = TextMessageEventContent::plain(msg);
+                let msg = MessageType::Text(msg);
+                let msg = RoomMessageEventContent::new(msg);
+
+                // XXX: second parameter can be a locally unique transaction id.
+                // Useful for doing retries.
+                let resp = room.send(msg.clone(), None).await.map_err(IambError::from)?;
+                let event_id = resp.event_id;
+
+                // Clear the TextBoxState contents now that the message is sent.
+                self.tbox.reset();
+
+                (event_id, msg)
+            },
+            SendAction::Upload(file) => {
+                let path = Path::new(file.as_str());
+                let mime = mime_guess::from_path(path).first_or(mime::APPLICATION_OCTET_STREAM);
+
+                let bytes = fs::read(path)?;
+                let name = path
+                    .file_name()
+                    .map(OsStr::to_string_lossy)
+                    .unwrap_or_else(|| Cow::from("Attachment"));
+                let config = AttachmentConfig::new();
+
+                let resp = room
+                    .send_attachment(name.as_ref(), &mime, bytes.as_ref(), config)
+                    .await
+                    .map_err(IambError::from)?;
+
+                // Mock up the local echo message for the scrollback.
+                let msg = TextMessageEventContent::plain(format!("[Attached File: {}]", name));
+                let msg = MessageType::Text(msg);
+                let msg = RoomMessageEventContent::new(msg);
+
+                (resp.event_id, msg)
+            },
+        };
+
+        let user = store.application.settings.profile.user_id.clone();
+        let info = store.application.get_room_info(self.id().to_owned());
+        let key = (MessageTimeStamp::LocalEcho, event_id);
+        let msg = MessageContent::Original(msg.into());
+        let msg = Message::new(msg, user, MessageTimeStamp::LocalEcho);
+        info.messages.insert(key, msg);
+
+        Ok(None)
+    }
+
     pub fn focus_toggle(&mut self) {
         self.focus = match self.focus {
             RoomFocus::Scrollback => RoomFocus::MessageBar,
@@ -229,17 +409,9 @@ impl PromptActions<ProgramContext, ProgramStore, IambInfo> for ChatState {
         ctx: &ProgramContext,
         _: &mut ProgramStore,
     ) -> EditResult<Vec<(ProgramAction, ProgramContext)>, IambInfo> {
-        let txt = self.tbox.reset_text();
+        let act = SendAction::Submit;
 
-        let act = if txt.is_empty() {
-            vec![]
-        } else {
-            let act = IambAction::SendMessage(self.room_id.clone(), txt).into();
-
-            vec![(act, ctx.clone())]
-        };
-
-        Ok(act)
+        Ok(vec![(IambAction::from(act).into(), ctx.clone())])
     }
 
     fn abort(

src/windows/room/mod.rs

@@ -1,6 +1,4 @@
-use matrix_sdk::room::Room as MatrixRoom;
-use matrix_sdk::ruma::RoomId;
-use matrix_sdk::DisplayName;
+use matrix_sdk::{room::Room as MatrixRoom, ruma::RoomId, DisplayName};
 
 use modalkit::tui::{
     buffer::Buffer,
@@ -37,13 +35,16 @@ use modalkit::{
 };
 
 use crate::base::{
+    IambError,
     IambId,
     IambInfo,
     IambResult,
+    MessageAction,
     ProgramAction,
     ProgramContext,
     ProgramStore,
     RoomAction,
+    SendAction,
 };
 
 use self::chat::ChatState;
@@ -92,7 +93,31 @@ impl RoomState {
         }
     }
 
-    pub fn room_command(
+    pub async fn message_command(
+        &mut self,
+        act: MessageAction,
+        ctx: ProgramContext,
+        store: &mut ProgramStore,
+    ) -> IambResult<EditInfo> {
+        match self {
+            RoomState::Chat(chat) => chat.message_command(act, ctx, store).await,
+            RoomState::Space(_) => Err(IambError::NoSelectedMessage.into()),
+        }
+    }
+
+    pub async fn send_command(
+        &mut self,
+        act: SendAction,
+        ctx: ProgramContext,
+        store: &mut ProgramStore,
+    ) -> IambResult<EditInfo> {
+        match self {
+            RoomState::Chat(chat) => chat.send_command(act, ctx, store).await,
+            RoomState::Space(_) => Err(IambError::NoSelectedRoom.into()),
+        }
+    }
+
+    pub async fn room_command(
         &mut self,
         act: RoomAction,
         _: ProgramContext,

src/windows/room/scrollback.rs

@@ -126,6 +126,14 @@ impl ScrollbackState {
         self.viewctx.dimensions = (area.width as usize, area.height as usize);
     }
 
+    pub fn get_mut<'a>(&mut self, info: &'a mut RoomInfo) -> Option<&'a mut Message> {
+        if let Some(k) = &self.cursor.timestamp {
+            info.messages.get_mut(k)
+        } else {
+            info.messages.last_entry().map(|o| o.into_mut())
+        }
+    }
+
     pub fn messages<'a>(
         &self,
         range: EditRange<MessageCursor>,
@@ -389,7 +397,7 @@ impl ScrollbackState {
                 continue;
             }
 
-            if needle.is_match(msg.as_ref()) {
+            if needle.is_match(msg.content.show().as_ref()) {
                 mc = MessageCursor::from(key.clone()).into();
                 count -= 1;
             }
@@ -413,7 +421,7 @@ impl ScrollbackState {
                 break;
             }
 
-            if needle.is_match(msg.as_ref()) {
+            if needle.is_match(msg.content.show().as_ref()) {
                 mc = MessageCursor::from(key.clone()).into();
                 count -= 1;
             }
@@ -659,7 +667,7 @@ impl EditorActions<ProgramContext, ProgramStore, IambInfo> for ScrollbackState {
                     let mut yanked = EditRope::from("");
 
                     for (_, msg) in self.messages(range, info) {
-                        yanked += EditRope::from(msg.as_ref());
+                        yanked += EditRope::from(msg.content.show().into_owned());
                         yanked += EditRope::from('\n');
                     }
 
@@ -1159,12 +1167,14 @@ impl<'a> StatefulWidget for Scrollback<'a> {
         };
 
         let corner = &state.viewctx.corner;
-        let corner_key = match (&corner.timestamp, &cursor.timestamp) {
-            (_, None) => nth_key_before(cursor_key.clone(), height, info),
-            (None, _) => nth_key_before(cursor_key.clone(), height, info),
-            (Some(k), _) => k.clone(),
+        let corner_key = if let Some(k) = &corner.timestamp {
+            k.clone()
+        } else {
+            nth_key_before(cursor_key.clone(), height, info)
         };
 
+        let full = cursor.timestamp.is_none();
+
         let mut lines = vec![];
         let mut sawit = false;
         let mut prev = None;
@@ -1175,8 +1185,10 @@ impl<'a> StatefulWidget for Scrollback<'a> {
 
             prev = Some(item);
 
+            let incomplete_ok = !full || !sel;
+
             for (row, line) in txt.lines.into_iter().enumerate() {
-                if sawit && lines.len() >= height {
+                if sawit && lines.len() >= height && incomplete_ok {
                     // Check whether we've seen the first line of the
                     // selected message and can fill the screen.
                     break;
@@ -1224,10 +1236,10 @@ mod tests {
     use super::*;
     use crate::tests::*;
 
-    #[test]
-    fn test_search_messages() {
+    #[tokio::test]
+    async fn test_search_messages() {
         let room_id = TEST_ROOM1_ID.clone();
-        let mut store = mock_store();
+        let mut store = mock_store().await;
         let mut scrollback = ScrollbackState::new(room_id.clone());
         let ctx = ProgramContext::default();
 
@@ -1268,9 +1280,9 @@ mod tests {
         assert_eq!(scrollback.cursor, MSG1_KEY.clone().into());
     }
 
-    #[test]
-    fn test_movement() {
-        let mut store = mock_store();
+    #[tokio::test]
+    async fn test_movement() {
+        let mut store = mock_store().await;
         let mut scrollback = ScrollbackState::new(TEST_ROOM1_ID.clone());
         let ctx = ProgramContext::default();
 
@@ -1302,9 +1314,9 @@ mod tests {
         assert_eq!(scrollback.cursor, MSG1_KEY.clone().into());
     }
 
-    #[test]
-    fn test_dirscroll() {
-        let mut store = mock_store();
+    #[tokio::test]
+    async fn test_dirscroll() {
+        let mut store = mock_store().await;
         let mut scrollback = ScrollbackState::new(TEST_ROOM1_ID.clone());
         let ctx = ProgramContext::default();
 
@@ -1436,9 +1448,9 @@ mod tests {
         assert_eq!(scrollback.viewctx.corner, MessageCursor::new(MSG3_KEY.clone(), 4));
     }
 
-    #[test]
-    fn test_cursorpos() {
-        let mut store = mock_store();
+    #[tokio::test]
+    async fn test_cursorpos() {
+        let mut store = mock_store().await;
         let mut scrollback = ScrollbackState::new(TEST_ROOM1_ID.clone());
         let ctx = ProgramContext::default();