1use std::path::PathBuf;
  2
  3use gpui::{AppContext, Entity, Global, MenuItem};
  4use smallvec::SmallVec;
  5use ui::App;
  6use util::{ResultExt, paths::PathExt};
  7
  8use crate::{
  9    NewWindow, SerializedWorkspaceLocation, WORKSPACE_DB, WorkspaceId, path_list::PathList,
 10};
 11
 12pub fn init(cx: &mut App) {
 13    let manager = cx.new(|_| HistoryManager::new());
 14    HistoryManager::set_global(manager.clone(), cx);
 15    HistoryManager::init(manager, cx);
 16}
 17
 18pub struct HistoryManager {
 19    /// The history of workspaces that have been opened in the past, in reverse order.
 20    /// The most recent workspace is at the end of the vector.
 21    history: Vec<HistoryManagerEntry>,
 22}
 23
 24#[derive(Debug)]
 25pub struct HistoryManagerEntry {
 26    pub id: WorkspaceId,
 27    pub path: SmallVec<[PathBuf; 2]>,
 28}
 29
 30struct GlobalHistoryManager(Entity<HistoryManager>);
 31
 32impl Global for GlobalHistoryManager {}
 33
 34impl HistoryManager {
 35    fn new() -> Self {
 36        Self {
 37            history: Vec::new(),
 38        }
 39    }
 40
 41    fn init(this: Entity<HistoryManager>, cx: &App) {
 42        cx.spawn(async move |cx| {
 43            let recent_folders = WORKSPACE_DB
 44                .recent_workspaces_on_disk()
 45                .await
 46                .unwrap_or_default()
 47                .into_iter()
 48                .rev()
 49                .filter_map(|(id, location, paths)| {
 50                    if matches!(location, SerializedWorkspaceLocation::Local) {
 51                        Some(HistoryManagerEntry::new(id, &paths))
 52                    } else {
 53                        None
 54                    }
 55                })
 56                .collect::<Vec<_>>();
 57            this.update(cx, |this, cx| {
 58                this.history = recent_folders;
 59                this.update_jump_list(cx);
 60            })
 61        })
 62        .detach();
 63    }
 64
 65    pub fn global(cx: &App) -> Option<Entity<Self>> {
 66        cx.try_global::<GlobalHistoryManager>()
 67            .map(|model| model.0.clone())
 68    }
 69
 70    fn set_global(history_manager: Entity<Self>, cx: &mut App) {
 71        cx.set_global(GlobalHistoryManager(history_manager));
 72    }
 73
 74    pub fn update_history(&mut self, id: WorkspaceId, entry: HistoryManagerEntry, cx: &App) {
 75        if let Some(pos) = self.history.iter().position(|e| e.id == id) {
 76            self.history.remove(pos);
 77        }
 78        self.history.push(entry);
 79        self.update_jump_list(cx);
 80    }
 81
 82    pub fn delete_history(&mut self, id: WorkspaceId, cx: &App) {
 83        let Some(pos) = self.history.iter().position(|e| e.id == id) else {
 84            return;
 85        };
 86        self.history.remove(pos);
 87        self.update_jump_list(cx);
 88    }
 89
 90    fn update_jump_list(&mut self, cx: &App) {
 91        let menus = vec![MenuItem::action("New Window", NewWindow)];
 92        let entries = self
 93            .history
 94            .iter()
 95            .rev()
 96            .map(|entry| entry.path.clone())
 97            .collect::<Vec<_>>();
 98        let user_removed = cx.update_jump_list(menus, entries);
 99        self.remove_user_removed_workspaces(user_removed, cx);
100    }
101
102    pub fn remove_user_removed_workspaces(
103        &mut self,
104        user_removed: Vec<SmallVec<[PathBuf; 2]>>,
105        cx: &App,
106    ) {
107        if user_removed.is_empty() {
108            return;
109        }
110        let mut deleted_ids = Vec::new();
111        for idx in (0..self.history.len()).rev() {
112            if let Some(entry) = self.history.get(idx)
113                && user_removed.contains(&entry.path)
114            {
115                deleted_ids.push(entry.id);
116                self.history.remove(idx);
117            }
118        }
119        cx.spawn(async move |_| {
120            for id in deleted_ids.iter() {
121                WORKSPACE_DB.delete_workspace_by_id(*id).await.log_err();
122            }
123        })
124        .detach();
125    }
126}
127
128impl HistoryManagerEntry {
129    pub fn new(id: WorkspaceId, paths: &PathList) -> Self {
130        let path = paths
131            .ordered_paths()
132            .map(|path| path.compact())
133            .collect::<SmallVec<[PathBuf; 2]>>();
134        Self { id, path }
135    }
136}