--[[


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⠀⠀⠀⠀⠀⠀⠀⠀⠐⣦⣄⡉⠛⠿⣿⣿⣿⣿⣿⣿⣿⣷⣦⣄⡉⠓⠦⣌⡙⠻⠟⢋⣡⠴⠚⢉⣠⣴⣾⣿⣿⣿⣿⣿⣿⣿⠿⠛⢉⣠⣴⠂
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⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠉⠛⠿⡇⢸⠿⠛⠉

              __             _             _
             / _|___     ___| |_ __ _  ___| | __
            | ||_  /____/ __| __/ _` |/ __| |/ /
            |  _/ /_____\__ \ || (_| | (__|   <
            |_|/___|    |___/\__\__,_|\___|_|\_\

                Neovim v0.12 configuration
                  (C) Frank Zechert 2026
]]

local create_group = vim.api.nvim_create_augroup
local create_cmd = vim.api.nvim_create_autocmd

-- briefly highlight text that is yanked
create_cmd("TextYankPost", {
	desc = "Highlight yanked text",
	group = create_group("cmd-highlight-yank", { clear = true }),
	callback = function()
		vim.hl.on_yank()
	end
})

-- disable list chars in specific file types, e.g. netrw
create_cmd("FileType", {
	desc = "Disable list characters for some filetypes",
	group = create_group("cmd-disable-listchars", { clear = true }),
	pattern = { "netrw" },
	callback = function(args)
		vim.opt_local.list = false
	end
})

-- when recognizing a bash shebang, switch filetype to bash
create_cmd({"BufRead", "BufNewFile"}, {
	desc = "Recognize bash shebang as bash filetype",
	group = create_group("cmd-recognize-bash-filetype", { clear = true }),
	pattern = "*",
	callback = function(args)
		local buf = args.buf
		local first_line = vim.api.nvim_buf_get_lines(buf, 0, 1, false)[1] or ""
		if first_line:match("^#!.*/bash") then
			vim.bo[buf].filetype = "bash"
		end
	end
})

-- when saving a file, remove trailing whitespace
create_cmd("BufWritePre", {
	desc = "Remove trailing whitespace before saving a file",
	group = create_group("cmd-remove-trailing-whitespace", { clear = true }),
	pattern = "*",
	callback = function(args)
		vim.api.nvim_buf_call(args.buf, function()
			local cursor = vim.api.nvim_win_get_cursor(0)
			vim.cmd([[keepjumps keeppatterns silent! %s/\s\+$//e]])
			vim.api.nvim_win_set_cursor(0, cursor)
		end)
	end
})


-- highlight trailing whitespace when in normal mode
local trailing_hl_group = create_group("cmd-highlight-trailing-whitespace", { clear = true })
local trailing_hl_match_ids = {}
-- Remove highlight in all non-normal modes
create_cmd({"InsertEnter", "CmdlineEnter", "TermEnter" }, {
	desc = "Remove trailing whitespace highlight in non-normal mode",
	group = trailing_hl_group,
	callback = function()
		local window = vim.api.nvim_get_current_win()
		local id = trailing_hl_match_ids[window]
		if id then
			pcall(vim.fn.matchdelete, id)
			trailing_hl_match_ids[window] = nil
		end
	end
})
-- Apply highlight in normal mode
create_cmd({"InsertLeave", "CmdlineLeave", "TermLeave", "BufEnter", "WinEnter" }, {
	desc = "Add trailing whitespace highlight in normal mode",
	group = trailing_hl_group,
	callback = function()
		if vim.fn.mode() ~= "n" then
			return
		end
		local window = vim.api.nvim_get_current_win()
		local id = trailing_hl_match_ids[window]
		if id then
			pcall(vim.fn.matchdelete, id)
		end
		trailing_hl_match_ids[window] = vim.fn.matchadd("TrailingWhitespace", [[\s\+$]])
	end
})

-- Open Trouble Quickfix list automatically
create_cmd("QuickFixCmdPost", {
	desc = "Automatically open Quickfix List in Trouble",
	group = create_group("cmd-quickfix-open-trouble", { clear = true }),
	callback = function()
		vim.cmd([[Trouble qflist open]])
	end
})

-- Automatically open diagnostic float when hovering with cursor
vim.api.nvim_create_autocmd("CursorHold", {
  callback = function()
    if not vim.api.nvim_get_current_win() then return end
    vim.diagnostic.open_float(nil, { focus = false, scope = "cursor" })
  end,
})

vim.api.nvim_create_autocmd("CursorMoved", {
  callback = function()
    for _, win in ipairs(vim.api.nvim_list_wins()) do
      local config = vim.api.nvim_win_get_config(win)
      if config.relative ~= "" then
        vim.api.nvim_win_close(win, false)
      end
    end
  end,
})