From 1f6dbed26b9f42805069dea5d788d5a985e70917 Mon Sep 17 00:00:00 2001
From: Akianonymus <anonymus.aki@gmail.com>
Date: Fri, 20 Aug 2021 14:52:27 +0530
Subject: [PATCH] Improve hiding/showing statusline via config

---
 lua/chadrc.lua         | 12 ++++++++----
 lua/default_config.lua | 13 +++++++++----
 lua/options.lua        |  5 +++--
 lua/utils.lua          | 22 ++++++++++++++++++++++
 4 files changed, 42 insertions(+), 10 deletions(-)

diff --git a/lua/chadrc.lua b/lua/chadrc.lua
index c2d7343..522b9e8 100644
--- a/lua/chadrc.lua
+++ b/lua/chadrc.lua
@@ -17,12 +17,16 @@ M.ui = {
    -- For Ex : if you have onedark set in nvchad , set onedark's bg color on your terminal
    transparency = false,
 
-   hidden_statusline = {
+   -- statusline related options
+   statusline = {
       -- these are filetypes, not pattern matched
-      "NvimTree",
-      "terminal",
+      -- if a filetype is present in shown, it will always show the statusline, irrespective of filetypes in hidden
+      hidden = {},
+      shown = {
+         -- "terminal"
+      },
+      style = "default", -- default, round , slant , block , arrow
    },
-   statusline_style = "default", -- default, round , slant , block , arrow
 }
 
 M.options = {
diff --git a/lua/default_config.lua b/lua/default_config.lua
index 3ebcaf6..27da9ba 100644
--- a/lua/default_config.lua
+++ b/lua/default_config.lua
@@ -17,12 +17,17 @@ M.ui = {
    -- For Ex : if you have onedark set in nvchad , set onedark's bg color on your terminal
    transparency = false,
 
-   hidden_statusline = {
+   -- statusline related options
+   statusline = {
       -- these are filetypes, not pattern matched
-      "NvimTree",
-      -- "terminal",
+      -- if a filetype is present in shown, it will always show the statusline, irrespective of filetypes in hidden
+      hidden = {
+         "NvimTree",
+         "terminal",
+      },
+      shown = {},
+      style = "default", -- default, round , slant , block , arrow
    },
-   statusline_style = "default", -- default, round , slant , block , arrow
 }
 
 M.options = {
diff --git a/lua/options.lua b/lua/options.lua
index e0aff03..62f4515 100644
--- a/lua/options.lua
+++ b/lua/options.lua
@@ -78,9 +78,10 @@ end
 -- Don't show any numbers inside terminals
 vim.cmd [[ au TermOpen term://* setlocal nonumber norelativenumber ]]
 
--- Don't show status line on certain windows
 vim.cmd [[ au TermOpen term://* setfiletype terminal ]]
-vim.cmd [[ let hidden_statusline = luaeval('require("utils").load_config().ui.hidden_statusline') | autocmd BufEnter,BufWinEnter,WinEnter,CmdwinEnter,TermEnter * nested if index(hidden_statusline, &ft) >= 0 | set laststatus=0 | else | set laststatus=2 | endif ]]
+
+-- Don't show status line on certain windows
+vim.cmd [[ autocmd BufEnter,BufWinEnter,WinEnter,CmdwinEnter,TermEnter * lua require("utils").hide_statusline() ]]
 
 -- Open a file from its last left off position
 -- vim.cmd [[ au BufReadPost * if expand('%:p') !~# '\m/\.git/' && line("'\"") > 1 && line("'\"") <= line("$") | exe "normal! g'\"" | endif ]]
diff --git a/lua/utils.lua b/lua/utils.lua
index abbfcf8..96d5771 100644
--- a/lua/utils.lua
+++ b/lua/utils.lua
@@ -181,6 +181,28 @@ M.file = function(mode, filepath, content)
    return data
 end
 
+-- hide statusline
+-- tables fetched from load_config function
+M.hide_statusline = function(values)
+   local hidden = require("utils").load_config().ui.statusline.hidden
+   local shown = require("utils").load_config().ui.statusline.shown
+   local api = vim.api
+   local buftype = api.nvim_buf_get_option("%", "ft")
+
+   -- shown table from config has the highest priority
+   if vim.tbl_contains(shown, buftype) then
+      api.nvim_set_option("laststatus", 2)
+      return
+   end
+
+   if vim.tbl_contains(hidden, buftype) then
+      api.nvim_set_option("laststatus", 0)
+      return
+   else
+      api.nvim_set_option("laststatus", 2)
+   end
+end
+
 -- return a table of available themes
 M.list_themes = function(return_type)
    local themes = {}