local M = require('module'):new()

local package_manager = require('plugin/vim_plug')
local file_exists = require('lib/file_exists')
local has_command = require('lib/has_command')

function M:initialize()
	self.path  = self.config.path or "~/.config/nvim/plugins/"
	self.auto_install = self.config.auto_install or true
	self.auto_cleanup = self.config.auto_cleanup or true
	self.plugins = {}
	self.keymap = nukevim.modules:get('keymap')
end

function M:register()
	for idx, plugin in pairs(self.config.plugins) do
		if (plugin.enable == nil or plugin.enable == true) then
			self:add(plugin.name, plugin.config or nil, plugin.keys or nil, plugin.requires or nil)
		end
	end
end

function M:commit()
	package_manager:initialize(self.path)
	package_manager:enter()
	for idx, plugin in pairs(self.plugins) do
		package_manager:add(plugin.name, plugin.config or nil)
	end
	package_manager:exit()

	-- Check if any plugins have lua modules, if so register them
	for idx, plugin in pairs(self.plugins) do
		if (file_exists(vim.env.HOME .. '/.config/nvim/lua/plugin/' .. plugin.name:gsub('%.', '-') .. '.lua')) then
			local plugin_module = require('plugin/' .. plugin.name:gsub('%.', '-')):new()
			plugin_module:configure(plugin.config)
			nukevim.modules:addInstance(plugin.name, plugin_module)
		end
	end

end

function M:boot()
	if (self.auto_install and package_manager:hasPendingPackages()) then
		package_manager:install()
	end
	if (self.auto_cleanup) then
		package_manager:cleanup()
	end
end

function M:add(name, config, keys, requires)

	if (requires ~= nil) then
		for i=1,#requires do
			if (not has_command(requires[i])) then
				return
			end
		end
	end

	table.insert(self.plugins, { name = name, config = config })

	if (keys ~= nil) then
		for idx, key in ipairs(keys) do
			self.keymap:add(key)
		end
	end

end

function M:has(name)
	for idx, plugin in pairs(self.plugins) do
		if (plugin.name == name) then
			return true
		end
	end
	return false
end

function M:install()
	package_manager:install()
end

function M:cleanup()
	package_manager:cleanup()
end

return M