Refactor oil and utils

home/.config/nvim/lua/plugs/oil.lua

@@ -1,18 +1,21 @@
 local utils = require("utils")
 
-local function lock_oil_buf_to_window(win_id, bufnr)
-    local augroup_id = vim.api.nvim_create_augroup("LockWindowToBuffer" .. win_id, { clear = true })
+local oil = nil
+local oil_window = nil
+
+local function lock_oil_buf_to_window(bufnr)
+    local augroup_id = vim.api.nvim_create_augroup("LockOil" .. oil_window, { clear = true })
 
     -- Create an autocommand group to manage the buffer lock
     vim.api.nvim_create_autocmd("BufEnter", {
         group = augroup_id,
         callback = function()
             local current_win = vim.api.nvim_get_current_win()
-            if current_win ~= win_id then
+            if current_win ~= oil_window then
                 return
             end
 
-            local current_buf = vim.api.nvim_win_get_buf(win_id)
+            local current_buf = vim.api.nvim_win_get_buf(oil_window)
             if current_buf == bufnr then
                 return
             end
@@ -22,15 +25,43 @@ local function lock_oil_buf_to_window(win_id, bufnr)
                 return
             end
 
-            vim.api.nvim_win_set_buf(win_id, bufnr)
+            vim.api.nvim_win_set_buf(oil_window, bufnr)
         end,
     })
 end
 
+local function toggle_oil_window()
+    if oil_window and vim.api.nvim_win_is_valid(oil_window) then
+        vim.api.nvim_win_close(oil_window, true)
+        oil_window = nil
+        return
+    end
+
+    -- Calculate the desired width (e.g., 20% of the terminal width)
+    local term_width = vim.api.nvim_get_option("columns")
+    local width_percentage = 0.175
+    local min_width = 30
+    local max_width = 50
+    local calculated_width = math.floor(term_width * width_percentage)
+    local final_width = math.min(math.max(calculated_width, min_width), max_width)
+
+    -- Open a vertical split with the calculated width on the left and open oil.nvim
+    vim.cmd("topleft vertical " .. final_width .. "vnew")
+    oil_window = vim.api.nvim_get_current_win()
+    vim.api.nvim_win_set_option(oil_window, "winfixwidth", true)
+
+    vim.api.nvim_win_set_option(oil_window, "winhighlight",
+        "Normal:Utility,FloatBorder:Utility")
+
+    oil.open()
+    local oil_buf_id = vim.api.nvim_get_current_buf()
+    lock_oil_buf_to_window(oil_buf_id)
+end
+
 return {
     "stevearc/oil.nvim",
     config = function()
-        local oil = require("oil")
+        oil = require("oil")
         oil.setup({
             view_options = {
                 show_hidden = true,
@@ -50,33 +81,7 @@ return {
         require("utils").add_keymaps({
             n = {
                 ["<leader>o"] = {
-                    cmd = function()
-                        local oil_bufnr = utils.get_bufnr_for_filetype("oil")
-                        if oil_bufnr then
-                            vim.api.nvim_buf_delete(oil_bufnr, { force = true })
-                            return
-                        end
-
-                        -- Calculate the desired width (e.g., 20% of the terminal width)
-                        local term_width = vim.api.nvim_get_option("columns")
-                        local width_percentage = 0.175
-                        local min_width = 30
-                        local max_width = 50
-                        local calculated_width = math.floor(term_width * width_percentage)
-                        local final_width = math.min(math.max(calculated_width, min_width), max_width)
-
-                        -- Open a vertical split with the calculated width on the left and open oil.nvim
-                        vim.cmd("topleft vertical " .. final_width .. "vnew")
-                        local win_id = vim.api.nvim_get_current_win()
-                        vim.api.nvim_win_set_option(win_id, "winfixwidth", true)
-
-                        vim.api.nvim_win_set_option(win_id, "winhighlight",
-                            "Normal:Utility,FloatBorder:Utility")
-
-                        oil.open()
-                        local oil_buf_id = vim.api.nvim_get_current_buf()
-                        lock_oil_buf_to_window(win_id, oil_buf_id)
-                    end
+                    cmd = toggle_oil_window,
                 }
             }
         })

home/.config/nvim/lua/utils.lua

@@ -9,17 +9,47 @@ function M.add_keymaps(maps)
 end
 
 function M.get_bufnr_for_filetype(filetype)
-    for _, buf in ipairs(vim.api.nvim_list_bufs()) do
-        if vim.bo[buf].filetype == filetype then
-            return buf
+    for _, bufnr in ipairs(vim.api.nvim_list_bufs()) do
+        if vim.api.nvim_buf_is_loaded(bufnr) and M.is_buf_filetype(bufnr, filetype) then
+            return bufnr
         end
     end
-
     return nil
 end
 
 function M.is_buf_filetype(bufnr, filetype)
-    return vim.bo[bufnr].filetype == filetype
+    return vim.api.nvim_buf_get_option(bufnr, "filetype") == filetype
+end
+
+function M.lock_buf_to_window(win_id, bufnr, filetype_check)
+    local augroup_id = vim.api.nvim_create_augroup("LockWindow" .. win_id, { clear = true })
+
+    vim.api.nvim_create_autocmd("BufEnter", {
+        group = augroup_id,
+        callback = function()
+            local current_win = vim.api.nvim_get_current_win()
+            if current_win ~= win_id then
+                return
+            end
+
+            local current_buf = vim.api.nvim_win_get_buf(win_id)
+            if current_buf == bufnr then
+                return
+            end
+
+            if filetype_check and filetype_check(current_buf) then
+                bufnr = current_buf
+                return
+            end
+
+            vim.api.nvim_win_set_buf(win_id, bufnr)
+        end,
+    })
+end
+
+function M.calculate_split_size(term_size, percentage, min_size, max_size)
+    local calculated_size = math.floor(term_size * percentage)
+    return math.min(math.max(calculated_size, min_size), max_size)
 end
 
 return M