From 04f5456d68efef76060a633de637c6789caad95b Mon Sep 17 00:00:00 2001
From: ful1e5 <24286590+ful1e5@users.noreply.github.com>
Date: Fri, 8 Apr 2022 15:40:52 +0530
Subject: [PATCH] feat: use native autocmds on nvim >=0.7 ( fixed #168 )

---
 CHANGELOG.md                  |  1 +
 lua/github-theme/autocmds.lua | 91 +++++++++++++++++++++++++++++++++++
 lua/github-theme/util.lua     | 36 ++++----------
 3 files changed, 101 insertions(+), 27 deletions(-)
 create mode 100644 lua/github-theme/autocmds.lua

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 785897e6..b20eae87 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - refactor: color types moved to `types/palette.lua`
 - chore: terminal colors
+- feat: use native autocmds on nvim >=0.7 ( fixed #168 )
 - chore: tmux theme's extension changed to `.conf` from `.tmux`
 - breaking-change: removed some colors from `colors.lua`
 - refactor: implement highlight override function in `util.load`
diff --git a/lua/github-theme/autocmds.lua b/lua/github-theme/autocmds.lua
new file mode 100644
index 00000000..ff4117fc
--- /dev/null
+++ b/lua/github-theme/autocmds.lua
@@ -0,0 +1,91 @@
+---@class gt.Autocmds
+local autocmds = {}
+
+---@type string
+autocmds.colors_name = ''
+
+---Delete the autocmds when the theme changes to something else
+autocmds.on_colorscheme = function()
+  if vim.g.colors_name ~= autocmds.colors_name then
+    vim.cmd('silent! autocmd! ' .. autocmds.colors_name)
+    vim.cmd('silent! augroup!' .. autocmds.colors_name)
+  end
+end
+
+---@param config gt.ConfigSchema
+---@param colors_name string
+autocmds.viml_cmds = function(config, colors_name)
+  autocmds.colors_name = colors_name
+  vim.cmd(string.format('augroup %s ', autocmds.colors_name))
+  vim.cmd('autocmd!')
+  vim.cmd('autocmd ColorScheme * lua require("github-theme.autocmd").on_colorscheme()')
+  if config.dev then
+    vim.cmd(string.format('autocmd BufWritePost */lua/github-theme/** nested colorscheme %s', autocmds.colors_name))
+  end
+  for _, sidebar in ipairs(config.sidebars) do
+    if sidebar == 'terminal' then
+      vim.cmd('autocmd TermOpen * setlocal winhighlight=Normal:NormalSB,SignColumn:SignColumnSB')
+    else
+      vim.cmd(string.format('autocmd FileType %s setlocal winhighlight=Normal:NormalSB,SignColumn:SignColumnSB', sidebar))
+    end
+  end
+  vim.cmd('augroup end')
+end
+
+---@param config gt.ConfigSchema
+---@param colors_name string
+autocmds.native_cmds = function(config, colors_name)
+  autocmds.colors_name = colors_name
+  local group = vim.api.nvim_create_augroup(autocmds.colors_name, { clear = false })
+
+  -- Delete the github-theme autocmds when the theme changes to something else
+  vim.api.nvim_create_autocmd('ColorScheme', {
+    pattern = '*',
+    group = group,
+    callback = function()
+      if vim.g.colors_name ~= autocmds.colors_name then
+        vim.api.nvim_del_augroup_by_id(group)
+      end
+    end,
+  })
+
+  if config.dev then
+    -- Enables hot-reloading in github-nvim-theme.
+    vim.api.nvim_create_autocmd('BufWritePost', {
+      pattern = '*/lua/github-theme/**',
+      nested = true,
+      group = group,
+      callback = function()
+        vim.cmd(string.format('colorscheme %s', autocmds.colors_name))
+      end,
+    })
+  end
+
+  local func_winhightlight = function()
+    vim.wo.winhighlight = 'Normal:NormalSB,SignColumn:SignColumnSB'
+  end
+
+  for _, sidebar in ipairs(config.sidebars) do
+    if sidebar == 'terminal' then
+      -- Set dark color for terminal background.,
+      vim.api.nvim_create_autocmd('TermOpen', {
+        pattern = '*',
+        group = group,
+        callback = function()
+          func_winhightlight()
+        end,
+      })
+    else
+      -- Set dark color for custom sidebars background.
+      vim.api.nvim_create_autocmd('FileType', {
+        pattern = sidebar,
+        group = group,
+        callback = function()
+          func_winhightlight()
+        end,
+      })
+    end
+  end
+end
+
+return autocmds
diff --git a/lua/github-theme/util.lua b/lua/github-theme/util.lua
index 00d1646e..011697c8 100644
--- a/lua/github-theme/util.lua
+++ b/lua/github-theme/util.lua
@@ -3,6 +3,7 @@ local types = require('github-theme.types')
 ---@class gt.Util
 local util = {}
 
+---@type string
 util.colors_name = ''
 
 ---@type table<number, gt.HexColor>
@@ -107,32 +108,6 @@ util.highlight = function(hi_name, hi)
   end
 end
 
----Delete the autocmds when the theme changes to something else
-util.on_colorscheme = function()
-  if vim.g.colors_name ~= util.colors_name then
-    vim.cmd('silent! autocmd! ' .. util.colors_name)
-    vim.cmd('silent! augroup!' .. util.colors_name)
-  end
-end
-
----@param config gt.ConfigSchema
-util.autocmds = function(config)
-  vim.cmd(string.format('augroup %s ', util.colors_name))
-  vim.cmd('autocmd!')
-  vim.cmd('autocmd ColorScheme * lua require("github-theme.util").on_colorscheme()')
-  if config.dev then
-    vim.cmd(string.format('autocmd BufWritePost */lua/github-theme/** nested colorscheme %s', util.colors_name))
-  end
-  for _, sidebar in ipairs(config.sidebars) do
-    if sidebar == 'terminal' then
-      vim.cmd('autocmd TermOpen * setlocal winhighlight=Normal:NormalSB,SignColumn:SignColumnSB')
-    else
-      vim.cmd(string.format('autocmd FileType %s setlocal winhighlight=Normal:NormalSB,SignColumn:SignColumnSB', sidebar))
-    end
-  end
-  vim.cmd('augroup end')
-end
-
 ---@param base gt.Highlights.Base
 util.syntax = function(base)
   for hi_name, hi in pairs(base) do
@@ -201,7 +176,14 @@ util.load = function(hi)
 
   --Load ColorScheme
   util.syntax(hi.base)
-  util.autocmds(hi.config)
+
+  local autocmds = require('github-theme.autocmds')
+  if vim.fn.has('nvim-0.7') == 1 then
+    autocmds.native_cmds(hi.config, util.colors_name)
+  else
+    autocmds.viml_cmds(hi.config, util.colors_name)
+  end
+
   util.terminal(hi.colors)
   util.syntax(hi.plugins)
 end