From 6b43b810c303bcb20d5f12d09ff0a3c6a3a70c5b Mon Sep 17 00:00:00 2001
From: rootiest <chris@rootiest.com>
Date: Wed, 28 Aug 2024 06:34:45 -0400
Subject: [PATCH] feat: introduce floating command window with history
 navigation

---
 lua/config/rootiest.lua  |  13 ++++
 lua/utils/cmd_window.lua | 138 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 151 insertions(+)
 create mode 100644 lua/utils/cmd_window.lua

diff --git a/lua/config/rootiest.lua b/lua/config/rootiest.lua
index 791c8e1..7f4381e 100644
--- a/lua/config/rootiest.lua
+++ b/lua/config/rootiest.lua
@@ -158,7 +158,20 @@ end
 function M.setup()
   M.eval_neovide()
   M.define_commands()
+
+  -- Setup types data
   require("data.types").setup()
+
+  --  ━━━━━━━━━━━━━━━━━━━━━━━━━ Rootiest cmd window ━━━━━━━━━━━━━━━━━━━━━━━━━
+  --
+  -- Setup Rootiest cmd window utility
+  require("utils.cmd_window").setup()
+
+  -- Setup Rootiest cmd window (override default command-line behavior)
+  -- require("utils.cmd_window").setup({ override_cmdline = true })
+
+  -- Setup indentor
+  require("utils.indentor")
 end
 
 return M
diff --git a/lua/utils/cmd_window.lua b/lua/utils/cmd_window.lua
new file mode 100644
index 0000000..07bfa9a
--- /dev/null
+++ b/lua/utils/cmd_window.lua
@@ -0,0 +1,138 @@
+--          ╭─────────────────────────────────────────────────────────╮
+--          │                 Rootiest Command Window                 │
+--          ╰─────────────────────────────────────────────────────────╯
+
+local M = {}
+
+function M.open_floating_window_with_completion()
+  local buf = vim.api.nvim_create_buf(false, true) -- Create a new buffer
+  local win_height = 1 -- Height of floating window
+  local win_width = math.floor(vim.o.columns * 0.25) -- Width of floating window
+  local row = math.floor((vim.o.lines - win_height) / 2) -- Position row
+  local col = math.floor((vim.o.columns - win_width) / 2) -- Position column
+  local win_border = "rounded"
+
+  -- Create a floating window
+  local win = vim.api.nvim_open_win(buf, true, {
+    relative = "editor",
+    width = win_width,
+    height = win_height,
+    col = col,
+    row = row,
+    border = win_border,
+  })
+
+  -- Set the buffer's filetype
+  vim.bo[buf].filetype = "cmdline" -- Set a unique filetype
+
+  -- Variables to manage history
+  _G.history_index = 0
+  _G.history_size = vim.fn.histnr("cmd")
+
+  -- Function to close the window
+  _G.close_window = function()
+    vim.api.nvim_win_close(win, true) -- Close the window
+    -- Switch back to normal mode
+    vim.api.nvim_command("stopinsert")
+  end
+
+  -- Function to execute the command
+  _G.execute_command = function()
+    local cmd = vim.api.nvim_buf_get_lines(buf, 0, -1, false)[1] or ""
+    -- Ensure abbreviation expansion
+    vim.api.nvim_command("execute 'silent! " .. cmd .. "'")
+    close_window()
+  end
+
+  -- Function to handle navigation and clear buffer
+  _G.handle_history_navigation = function(direction)
+    -- Update history index
+    _G.history_index = (_G.history_index + direction) % _G.history_size
+    if _G.history_index < 0 then
+      _G.history_index = _G.history_size - 1
+    end
+
+    -- Clear the buffer
+    vim.api.nvim_buf_set_lines(buf, 0, -1, false, {})
+
+    -- Fetch history item and insert into buffer
+    local history_cmd = vim.fn["histget"]("cmd", _G.history_index + 1)
+    vim.api.nvim_buf_set_lines(buf, 0, -1, false, { history_cmd or "" })
+    vim.api.nvim_win_set_cursor(win, { 1, #history_cmd or 0 })
+  end
+
+  -- Setup keymaps for buffer
+  -- Map <CR> to execute the command
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<CR>",
+    [[<cmd>lua execute_command()<CR>]],
+    { noremap = true, silent = true }
+  )
+  -- Map <ESC> to close the window
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<ESC>",
+    [[<cmd>lua close_window()<CR>]],
+    { noremap = true, silent = true }
+  )
+  -- Map <Up> to navigate command history
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<Up>",
+    [[<cmd>lua handle_history_navigation(-1)<CR>]],
+    { noremap = true, silent = true }
+  )
+  -- Map <Down> to navigate command history
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<Down>",
+    [[<cmd>lua handle_history_navigation(1)<CR>]],
+    { noremap = true, silent = true }
+  )
+  -- Map <C-n> to navigate command history
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<C-n>",
+    [[<cmd>lua handle_history_navigation(1)<CR>]],
+    { noremap = true, silent = true }
+  )
+  -- Map <C-p> to navigate command history
+  vim.api.nvim_buf_set_keymap(
+    buf,
+    "i",
+    "<C-p>",
+    [[<cmd>lua handle_history_navigation(-1)<CR>]],
+    { noremap = true, silent = true }
+  )
+
+  -- Start in insert mode
+  vim.api.nvim_command("startinsert")
+end
+
+M.setup = function(opts)
+  opts = opts or {}
+
+  -- Add a user command to open the floating window
+  vim.api.nvim_create_user_command(
+    "FloatingWindowWithCompletion",
+    M.open_floating_window_with_completion,
+    {}
+  )
+
+  -- Optionally override default command-line behavior
+  if opts.override_cmdline then
+    require("data").func.add_keymap(
+      ":",
+      "<cmd>lua require('utils.cmd_window').open_floating_window_with_completion()<cr>",
+      "FloatingWindowWithCompletion"
+    )
+  end
+end
+
+return M