Merge pull request #2 from rrossmiller/send-update-event

Send update event

README.md

@@ -53,6 +53,8 @@ I have a plan to fix this.
 ## 🛠️ Roadmap
 - [x] read and write todos in buffer from/to a file
 - [x] project/repo-level vs global todo 
+- [x] sync the instances/open windows (rpc)
+  - [x] update the window whenever any todo window/file was updated
+  - [x] only update the window if the underlying file was updated
 - [ ] fancy icons marking doneness?
     - change a prefix of a line to mean that the todo is done and the style of the line should change to reflect that
-- [ ] sync the instances/open windows (rpc)

lua/tasklist/health.lua

@@ -0,0 +1,14 @@
+M = {}
+
+function M.check()
+    vim.health.start("Checking that fswatch is installed")
+    local ok = vim.fn.executable("fswatch")
+    -- make sure setup function parameters are ok
+    if ok ~= 0 then
+        vim.health.ok("Setup is correct")
+    else
+        vim.health.error("fswatch is not installed or missing from path")
+    end
+end
+
+return M

lua/tasklist/init.lua

@@ -1,16 +1,29 @@
 -- much of the credit goes to: https://dev.to/2nit/how-to-write-neovim-plugins-in-lua-5cca
+-- also folke's https://github.com/folke/persistence.nvim
+-- also gpt 3.5
 local config = require("tasklist.config")
 local api = vim.api
 local buf, win
 local win_open = false
 local global_todo = true
+local suffix = ".todo"
 
 local M = {}
 
+local function update_buffer(chan_id, data, name)
+    -- https://neovim.io/doc/user/channel.html#on_stdout
+    local fname = 'todo' .. suffix
+    if not global_todo then
+        fname = M.get_proj_name() .. suffix
+    end
+    if vim.api.nvim_buf_is_valid(buf) and data[1]:find(fname) then
+        local content = M.read_content()
+        vim.api.nvim_buf_set_lines(buf, 0, -1, false, content)
+    end
+end
+
 function M.setup(opts)
     config.setup(opts)
-    -- vim.api.nvim_create_user_command("TasklistToggleGlobal", function(cmd) M.toggle_window() end)
-    -- vim.api.nvim_create_user_command("TasklistToggleProject", function(cmd) M.toggle_proj_window() end)
 
     vim.api.nvim_create_autocmd("VimLeavePre", {
         group = vim.api.nvim_create_augroup("todo_content", { clear = true }),
@@ -23,6 +36,12 @@ function M.setup(opts)
             end
         end,
     })
+
+    local pth = config.options.dir .. "/*.todo"
+    -- update window whenever todo list is updated
+    vim.fn.jobstart("fswatch -x +i " .. pth, {
+        on_stdout = update_buffer,
+    })
 end
 
 function M.open_window()
@@ -68,9 +87,9 @@ function M.open_window()
 end
 
 function M.read_content()
-    local fname = 'todo'
+    local fname = 'todo' .. suffix
     if not global_todo then
-        fname = M.get_proj_name()
+        fname = M.get_proj_name() .. suffix
     end
     local f = io.open(config.options.dir .. fname, 'r')
     local lines = {}
@@ -90,9 +109,9 @@ end
 
 function M.save_todos()
     -- write buffer to todofile
-    local fname = 'todo'
+    local fname = 'todo' .. suffix
     if not global_todo then
-        fname = M.get_proj_name()
+        fname = M.get_proj_name() .. suffix
     end
     local file = io.open(config.options.dir .. fname, 'w')
     if not file then