function on_attach(bufnr)
	local gs = package.loaded.gitsigns

	local function map(mode, l, r, opts)
		opts = opts or {}
		opts.buffer = bufnr
		vim.keymap.set(mode, l, r, opts)
	end

	-- Navigation
	map("n", "]h", function()
		if vim.wo.diff then
			return "]h"
		end
		vim.schedule(function()
			gs.next_hunk()
		end)
		return "<Ignore>"
	end, { expr = true })

	map("n", "[h", function()
		if vim.wo.diff then
			return "[h"
		end
		vim.schedule(function()
			gs.prev_hunk()
		end)
		return "<Ignore>"
	end, { expr = true })

	-- Actions
	map({ "n", "v" }, "<leader>gs", ":Gitsigns stage_hunk<CR>")
	map({ "n", "v" }, "<leader>gr", ":Gitsigns reset_hunk<CR>")
	map("n", "<leader>gu", gs.undo_stage_hunk)
	map("n", "<leader>gp", gs.preview_hunk)
	map("n", "<leader>gb", function()
		gs.blame_line({ full = true })
	end)
	map("n", "<leader>gtb", gs.toggle_current_line_blame)
	map("n", "<leader>gd", gs.diffthis)
	map("n", "<leader>gD", function()
		gs.diffthis("~")
	end)

	-- Text object
	map({ "o", "x" }, "ih", ":<C-U>Gitsigns select_hunk<CR>")
end

-- See: https://github.com/lewis6991/gitsigns.nvim
require("gitsigns").setup({
	on_attach = on_attach,
})