local M = {}

M.keys = {
	[' p%d'] = '<vis-prompt-show>pin-files pin %d<Enter>',
	[' %d'] = '<vis-prompt-show>pin-files e %d<Enter>',
}

M.files = {}

local function pin_file(num, file)
	if file ~= nil then
		M.files[num] = file
		vis:info('[' .. num .. '] pin')
	else
		vis:info('Window has no file')
	end
end

local function open_file(num, cmd)
	local file = M.files[num]
	if not file then
		vis:info('[' .. num .. '] empty')
	elseif file == vis.win.file.path and cmd == 'e' then
		vis:info('[' .. num .. '] already opened')
	else
		vis:info('[' .. num .. '] ' .. cmd)
		vis:command(string.format('%s %q', cmd or 'o', file))
	end
end

vis:command_register('pin-files', function(argv, force, win, selection, range)
	local cmd = argv[1] or 'o'
	local num = tonumber(argv[2]) or argv[2] or vis.count
	if not num then
		vis:info('No file number given')
	elseif cmd == 'pin' then
		pin_file(num, win.file.path)
	else
		open_file(num, cmd)
	end
end)

vis.events.subscribe(vis.events.INIT, function()
	for key, cmd in pairs(M.keys or {}) do
		if key:find('%%d') then
			for num = 1, 9 do
				vis:map(vis.modes.NORMAL, string.format(key, num), string.format(cmd, num))
			end
		else
			vis:map(vis.modes.NORMAL, key, cmd)
		end
	end
end)

return M