-- Set mapleader
vim.g.mapleader = "<Space>"
vim.g.maplocalleader = ","

-- Lazy
require("config.lazy")

-- Line numbers
vim.opt.cursorline = true
vim.wo.relativenumber = true
vim.wo.number = true
vim.api.nvim_set_hl(0, "LineNr", { fg = "#6c7086" }) -- overlay0
vim.api.nvim_set_hl(0, "CursorLineNr", { fg = "#cba6f7", bold = true }) -- mauve

local cursorline_group = vim.api.nvim_create_augroup("CursorLineControl", { clear = true })

vim.api.nvim_create_autocmd({ "WinEnter", "BufEnter" }, {
	group = cursorline_group,
	callback = function()
		vim.opt_local.cursorline = true
	end,
})

vim.api.nvim_create_autocmd({ "WinLeave" }, {
	group = cursorline_group,
	callback = function()
		vim.opt_local.cursorline = false
	end,
})

-- Windows
vim.opt.splitbelow = true
vim.opt.splitright = true
vim.o.winborder = "rounded"

-- Sane tab management
vim.opt.tabstop = 2
vim.opt.softtabstop = 2
vim.opt.shiftwidth = 2
vim.opt.expandtab = false

-- Undo management
vim.opt.swapfile = false
vim.opt.backup = false
vim.opt.undodir = os.getenv("HOME") .. "/.vim/undodir"
vim.opt.undofile = true

-- Better Highlighting
vim.opt.hlsearch = false
vim.opt.incsearch = true

-- Nowrap
vim.opt.wrap = false

-- Colorcheme
vim.cmd.colorscheme("catppuccin-mocha")

-- Scrolloff
vim.opt.scrolloff = math.floor(vim.o.lines / 2) - 3

-- Indent
vim.o.autoindent = true

-- Keymap function
function Keymap(mode, key, binding)
	vim.keymap.set(mode, key, binding, { noremap = true, silent = true })
end

-- Better keymaps
Keymap("i", "jj", "<Esc>")
Keymap("n", "q:", ":")
Keymap("n", "<leader>bd", function() -- delete buffer
	vim.cmd("bd")
	vim.cmd("echo 'Buffer deleted'")
end)

vim.keymap.set("n", "i", function()
	if vim.fn.getline("."):match("^%s*$") then
		return [["_cc]]
	else
		return "i"
	end
end, { expr = true, desc = "Inent properly on empty lines" })

vim.keymap.set("n", "a", function()
	if vim.fn.getline("."):match("^%s*$") then
		return [["_cc]]
	else
		return "a"
	end
end, { expr = true, desc = "Indent properly on empty lines" })

-- C-BS for deleting whole word in insert mode
vim.keymap.set("i", "<C-BS>", "<C-W>", { noremap = true })

-- Keybinds for MiniSessions
vim.keymap.set("n", "<leader>qj", function() -- quit and save session local
	MiniSessions.write(".session")
	vim.cmd("wqa")
end, { noremap = true })

vim.keymap.set("n", "<leader>qd", function() -- quit and delete session
	pcall(MiniSessions.delete(".session"))
	vim.cmd("wqa")
end, { noremap = true })

-- lg keybind
Keymap("n", "<leader>l", function()
	Snacks.lazygit.open()
end)

-- Autocommand to check git status
vim.api.nvim_create_autocmd("VimEnter", {
	callback = function()
		-- Verify if the current directory is a git repo
		local is_git = os.execute("git rev-parse --is-inside-work-tree > /dev/null 2>&1")
		if is_git ~= 0 then
			return
		end

		-- Perform an async fetch to avoid startup lag
		vim.fn.jobstart("git fetch", {
			on_exit = function()
				-- Get the number of commits the remote is ahead of local HEAD
				local count = vim.fn.system("git rev-list --count HEAD..@{u} 2>/dev/null"):gsub("%s+", "")

				if count ~= "" and tonumber(count) > 0 then
					vim.schedule(function()
						vim.notify(
							"󰊢 " .. count .. " new commit(s) available on remote.",
							vim.log.levels.INFO,
							{ title = "Git Status", icon = "󰊢" }
						)
					end)
				end
			end,
		})
	end,
})