feat: non_standalone plugin (#51)

Author: willothy

.stylua.toml

@@ -4,4 +4,5 @@ indent_type = "Spaces"
 indent_width = 4
 quote_style = "ForceDouble"
 call_parentheses = "Always"
+# collapse_simple_statement = "FunctionOnly"
 collapse_simple_statement = "Always"

README.md

@@ -93,6 +93,11 @@ To see full configuration types see [template.lua](./lua/leetcode/config/templat
         cache = vim.fn.stdpath("cache") .. "/leetcode",
     },
 
+    ---@type table<string, boolean>
+    plugins = {
+        non_standalone = false,
+    },
+
     ---@type boolean
     logging = true,
 
@@ -137,6 +142,9 @@ To see full configuration types see [template.lua](./lua/leetcode/config/templat
 
         ---@type fun(question: lc.ui.Question)[]
         ["question_enter"] = {},
+
+        ---@type fun()[]
+        ["leave"] = {},
     },
 
     keys = {
@@ -226,6 +234,17 @@ storage = {
 },
 ```
 
+### plugins
+
+[plugins list](#-plugins)
+
+```lua
+---@type table<string, boolean>
+plugins = {
+    non_standalone = false,
+},
+```
+
 ### logging
 
 Whether to log [leetcode.nvim] status notifications
@@ -272,6 +291,9 @@ hooks = {
 
     ---@type fun(question: lc.ui.Question)[]
     ["question_enter"] = {},
+
+    ---@type fun()[]
+    ["leave"] = {},
 },
 ```
 
@@ -294,6 +316,8 @@ image_support = false,
 
 - `menu` same as `Leet`
 
+- `exit` close [leetcode.nvim]
+
 - `console` opens console pop-up for currently opened question
 
 - `info` opens a pop-up containing information about the currently opened question
@@ -419,6 +443,21 @@ https://github.com/kawre/leetcode.nvim/assets/69250723/b7be8b95-5e2c-4153-8845-4
   }
   ```
 
+## 🧩 Plugins
+
+### Non-Standalone mode
+
+To run [leetcode.nvim] in a non-standalone mode (i.e. not with argument or an empty Neovim session),
+enable the `non_standalone` plugin in your config:
+
+```lua
+plugins = {
+    non_standalone = true,
+}
+```
+
+You can then exit [leetcode.nvim] using `:Leet exit` command
+
 ## 🙌 Credits
 
 - [Leetbuddy.nvim](https://github.com/Dhanus3133/Leetbuddy.nvim)

README.zh.md

@@ -95,6 +95,11 @@ https://github.com/kawre/leetcode.nvim/assets/69250723/aee6584c-e099-4409-b114-1
         cache = vim.fn.stdpath("cache") .. "/leetcode",
     },
 
+    ---@type table<string, boolean>
+    plugins = {
+        non_standalone = false,
+    },
+
     ---@type boolean
     logging = true,
 
@@ -139,6 +144,9 @@ https://github.com/kawre/leetcode.nvim/assets/69250723/aee6584c-e099-4409-b114-1
 
         ---@type fun(question: lc.ui.Question)[]
         ["question_enter"] = {},
+
+        ---@type fun()[]
+        ["leave"] = {},
     },
 
     keys = {
@@ -228,6 +236,17 @@ storage = {
 },
 ```
 
+### plugins
+
+[插件列表](#-plugins)
+
+```lua
+---@type table<string, boolean>
+plugins = {
+    non_standalone = false,
+},
+```
+
 ### logging
 
 是否记录 [leetcode.nvim] 状态通知
@@ -271,6 +290,9 @@ hooks = {
 
     ---@type fun(question: lc.ui.Question)[]
     ["question_enter"] = {},
+
+    ---@type fun()[]
+    ["leave"] = {},
 },
 ```
 
@@ -293,6 +315,8 @@ image_support = false, -- 将此设置为 `true` 将禁用问题描述的换行
 
 - `menu` 与 `Leet` 相同
 
+- `exit` 关闭 [leetcode.nvim]
+
 - `console` 打开当前打开问题的控制台弹出窗口
 
 - `info` 打开包含当前打开问题信息的弹出窗口
@@ -417,6 +441,21 @@ https://github.com/kawre/leetcode.nvim/assets/69250723/b7be8b95-5e2c-4153-8845-4
   }
   ```
 
+## 🧩 Plugins
+
+### Non-Standalone mode
+
+要在非独立模式下运行 [leetcode.nvim]（即不带参数或在空的 Neovim 会话中运行），
+请在您的配置中启用 `non_standalone` 插件：
+
+```lua
+plugins = {
+    non_standalone = true,
+}
+```
+
+你可以使用 `:Leet exit` 命令退出 [leetcode.nvim]
+
 ## 🙌 鸣谢
 
 - [Leetbuddy.nvim](https://github.com/Dhanus3133/Leetbuddy.nvim)

lua/leetcode-plugins/non_standalone/init.lua

@@ -0,0 +1,12 @@
+---@class lc.plugins.non_standalone
+local non_standalone = {}
+
+non_standalone.opts = {
+    lazy = false,
+}
+
+function non_standalone.load() --
+    require("leetcode-plugins.non_standalone.leetcode")
+end
+
+return non_standalone

lua/leetcode-plugins/non_standalone/leetcode.lua

@@ -0,0 +1,87 @@
+local leetcode = require("leetcode")
+local config = require("leetcode.config")
+
+local standalone = true
+local prev_cwd = nil
+
+---@param on_vimenter boolean
+leetcode.should_skip = function(on_vimenter)
+    if on_vimenter then
+        if vim.fn.argc() ~= 1 then return true end
+
+        local usr_arg, arg = vim.fn.argv()[1], config.user.arg
+        if usr_arg ~= arg then return true end
+
+        local lines = vim.api.nvim_buf_get_lines(0, 0, -1, true)
+        if #lines > 1 or (#lines == 1 and lines[1]:len() > 0) then
+            local log = require("leetcode.logger")
+            log.warn(("Failed to initialize: `%s` is not an empty buffer"):format(usr_arg))
+            return true
+        end
+    else
+        for _, buf_id in pairs(vim.api.nvim_list_bufs()) do
+            local bufinfo = vim.fn.getbufinfo(buf_id)[1]
+            if bufinfo and (bufinfo.listed == 1 and #bufinfo.windows > 0) then --
+                return false, true
+            end
+        end
+    end
+
+    return false
+end
+
+---@param on_vimenter boolean
+leetcode.start = function(on_vimenter)
+    local skip, buflisted = leetcode.should_skip(on_vimenter)
+    if skip then --
+        return false
+    end
+
+    config.setup()
+
+    leetcode.setup_cmds()
+
+    local theme = require("leetcode.theme")
+    theme.setup()
+
+    if not on_vimenter then --
+        if buflisted then
+            prev_cwd = vim.fn.getcwd()
+            vim.cmd.tabe()
+        else
+            vim.cmd.enew()
+        end
+
+        standalone = not buflisted
+    end
+
+    vim.api.nvim_set_current_dir(config.storage.home:absolute())
+
+    local Menu = require("leetcode-ui.renderer.menu")
+    Menu():mount()
+
+    local utils = require("leetcode.utils")
+    utils.exec_hooks("enter")
+
+    return true
+end
+
+leetcode.stop = vim.schedule_wrap(function()
+    if standalone then return vim.cmd("qa!") end
+
+    _Lc_state.menu:unmount()
+
+    vim.api.nvim_create_user_command("Leet", require("leetcode.command").start_with_cmd, {
+        bar = true,
+        bang = true,
+        desc = "Open leetcode.nvim",
+    })
+
+    local utils = require("leetcode.utils")
+    utils.exec_hooks("leave")
+
+    if prev_cwd then
+        vim.api.nvim_set_current_dir(prev_cwd)
+        prev_cwd = nil
+    end
+end)

lua/leetcode-ui/lines/button/menu/exit.lua

@@ -1,4 +1,5 @@
 local MenuButton = require("leetcode-ui.lines.button.menu")
+local leetcode = require("leetcode")
 
 ---@class lc.ui.Button.Menu.Exit : lc.ui.Button.Menu
 local MenuExitButton = MenuButton:extend("LeetMenuExitButton")
@@ -8,7 +9,7 @@ function MenuExitButton:init()
     MenuExitButton.super.init(self, "Exit", {
         icon = "󰩈",
         sc = "q",
-        on_press = function() vim.cmd("qa!") end,
+        on_press = leetcode.stop,
     })
 end
 

lua/leetcode-ui/lines/calendar.lua

@@ -83,7 +83,7 @@ function Calendar:handle_res(res)
         self:append(line):endl()
     end
 
-    _Lc_menu:draw()
+    _Lc_state.menu:draw()
 end
 
 function Calendar:handle_submissions()

lua/leetcode-ui/lines/solved.lua

@@ -76,7 +76,7 @@ function Solved:handle_res(res)
         self:endl()
     end
 
-    _Lc_menu:draw()
+    _Lc_state.menu:draw()
 end
 
 function Solved:update()

lua/leetcode-ui/question.lua

@@ -152,7 +152,7 @@ function Question:injector(code)
     return table.concat(parts, "\n")
 end
 
-function Question:unmount()
+function Question:_unmount()
     if vim.v.dying ~= 0 then --
         return
     end
@@ -166,15 +166,16 @@ function Question:unmount()
             vim.api.nvim_buf_delete(self.bufnr, { force = true, unload = false })
         end
 
-        _Lc_questions = vim.tbl_filter(function(q) --
-            return q.bufnr ~= self.bufnr
-        end, _Lc_questions)
+        _Lc_state.questions = vim.tbl_filter(
+            function(q) return q.bufnr ~= self.bufnr end,
+            _Lc_state.questions
+        )
 
         self = nil
     end)
 end
 
-function Question:_unmount()
+function Question:unmount()
     if vim.api.nvim_win_is_valid(self.winid) then vim.api.nvim_win_close(self.winid, true) end
 end
 
@@ -183,14 +184,14 @@ function Question:autocmds()
     vim.api.nvim_create_autocmd("WinClosed", {
         group = group,
         pattern = tostring(self.winid),
-        callback = function() self:unmount() end,
+        callback = function() self:_unmount() end,
     })
 end
 
 function Question:handle_mount()
     self:create_buffer()
 
-    table.insert(_Lc_questions, self)
+    table.insert(_Lc_state.questions, self)
 
     self.description = Description(self):mount()
     self.console = Console(self)

lua/leetcode-ui/renderer/init.lua

@@ -24,6 +24,8 @@ function Renderer:draw(component)
     self.bufnr = component.bufnr
     self.winid = component.winid
 
+    if not vim.api.nvim_buf_is_valid(self.bufnr) then return end
+
     self:map("n", keys.confirm, function() self:handle_press() end)
 
     self:clear_keymaps()