codemp-nvim/lua/codemp/workspace.lua

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local utils = require('codemp.utils')
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local buffers = require('codemp.buffers')
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local session = require('codemp.session')
---@class UserHighlight
---@field ns integer namespace to use for this user
---@field hi string color for user to use
---@field pos [integer, integer] cursor start position of this user
---@type table<string, UserHighlight>
local user_hl = {}
local function fetch_workspaces_list()
local new_list = {}
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local owned = session.client:list_workspaces(true, false):await()
for _, ws in pairs(owned) do
table.insert(new_list, {
name = ws,
owned = true,
})
end
local invited = session.client:list_workspaces(false, true):await()
for _, ws in pairs(invited) do
table.insert(new_list, {
name = ws,
owned = false,
})
end
session.available = new_list
require('codemp.window').update()
end
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---@param ws Workspace
local function register_cursor_callback(ws)
local controller = ws.cursor
local once = true
vim.api.nvim_create_autocmd({"CursorMoved", "CursorMovedI", "ModeChanged"}, {
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group = vim.api.nvim_create_augroup("codemp-workspace-" .. ws.name, { clear = true }),
callback = function (_)
local cur = utils.cursor.position()
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local buf = vim.api.nvim_get_current_buf()
if buffers.map[buf] ~= nil then
once = true
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local _ = controller:send({
buffer = buffers.map[buf],
start = cur[1],
finish = cur[2],
}) -- no need to await here
else -- set ourselves "away" only once
if once then
local _ = controller:send({
buffer = "",
start = { 0, 0 },
finish = { 0, 0 },
}) -- no need to await here
end
once = false
end
end
})
end
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---@param ws Workspace
local function register_cursor_handler(ws)
local controller = ws.cursor
local async = vim.loop.new_async(vim.schedule_wrap(function ()
while true do
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local event = controller:try_recv():await()
if event == nil then break end
local user = event.user -- do it on separate line so language server understands that it wont be nil
if user ~= nil then
if user_hl[user] == nil then
user_hl[user] = {
ns = vim.api.nvim_create_namespace("codemp-cursor-" .. event.user),
hi = utils.color(event.user),
pos = { 0, 0 },
}
end
user_hl[user].pos = event.start
local old_buffer = buffers.users[event.user]
if old_buffer ~= nil then
local old_buffer_id = buffers.map_rev[old_buffer]
if old_buffer_id ~= nil then
vim.api.nvim_buf_clear_namespace(old_buffer_id, user_hl[event.user].ns, 0, -1)
end
end
buffers.users[event.user] = event.buffer
local buffer_id = buffers.map_rev[event.buffer]
if buffer_id ~= nil then
utils.multiline_highlight(
buffer_id,
user_hl[event.user].ns,
user_hl[event.user].hi,
event.start,
event.finish
)
end
if old_buffer ~= event.buffer then
require('codemp.window').update() -- redraw user positions
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end
end
end
end))
controller:callback(function (_controller) async:send() end)
end
---@param workspace string workspace name to join
---@return Workspace
---join a workspace and register event handlers
local function join(workspace)
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local ws = session.client:join_workspace(workspace):await()
print(" >< joined workspace " .. ws.name)
register_cursor_callback(ws)
register_cursor_handler(ws)
utils.poller(
function() return ws:event() end,
function(event)
if event.type == "leave" then
if buffers.users[event.value] ~= nil then
vim.schedule(function ()
local buf_name = buffers.users[event.value]
vim.api.nvim_buf_clear_namespace(buffers.map_rev[buf_name], user_hl[event.value].ns, 0, -1)
buffers.users[event.value] = nil
user_hl[event.value] = nil
end)
end
elseif event.type == "join" then
buffers.users[event.value] = ""
user_hl[event.value] = {
ns = vim.api.nvim_create_namespace("codemp-cursor-" .. event.value),
hi = utils.color(event.value),
pos = { 0, 0 },
}
end
vim.schedule(function() require('codemp.window').update() end)
end
)
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session.workspace = ws
require('codemp.window').update()
return ws
end
local function leave()
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session.client:leave_workspace(session.workspace.name)
print(" -- left workspace")
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session.workspace = nil
end
return {
join = join,
leave = leave,
map = user_hl,
list = fetch_workspaces_list,
}