-- acf model for packages (apk)
module (..., package.seeall)
require("getopts")

local configfile = "/etc/apk/apk.conf"

get_all_packages = function()
	-- read in all of the packages
	local cmd = "/sbin/apk_fetch -l 2>/dev/null"
	local f = io.popen( cmd )
	local all = {}
	for line in f:lines() do all[#all + 1] = line end
	f:close()
	return cfe({ type="list", value=all, label="All Packages"})
end

get_loaded_packages = function()
	-- read in the loaded packages
	local cmd = "/sbin/apk_info 2>/dev/null"
	local f = io.popen( cmd )
	local loaded = {}
	for line in f:lines() do
		local temp = {}
		temp.name = string.match(line, "(.-)-%d+.*")
		temp.version, temp.description = string.match(line, "([^ ]+) %- (.+)")
		loaded[#loaded+1] = temp
	end
	return cfe({ type="list", value=loaded, label="Loaded Packages"})
end

get_available_packages = function(_loaded_cfe, _all_cfe)
	-- available are all except loaded
	local loaded_cfe = _loaded_cfe or get_loaded_packages()
	local all_cfe = _all_cfe or get_all_packages()
	local loaded = loaded_cfe.value
	local all = all_cfe.value
	local available = {}
	local reverseloaded = {}
	for i,packagetable in ipairs(loaded) do reverseloaded[packagetable.name] = i end
	for i,package in ipairs(all) do
		if (reverseloaded[package]==nil) then available[#available + 1] = package end
	end
	return cfe({ type="list", value=available, label="Available Packages" })
end

get_packages = function()
	local loaded = get_loaded_packages()
	local available = get_available_packages(loaded)
	return cfe({ type="group", value={loaded=loaded, available=available} })
end

delete_package = function(package, sessiondata)
	local cmdresult = "Delete failed - Invalid package"
	local loaded = get_loaded_packages()
	for i,pack in pairs(loaded.value) do
		if pack.name == package then
			local cmd = "/sbin/apk_delete " .. package .. " 2>&1"
			local f = io.popen( cmd )
			cmdresult = f:read("*a") or ""
			f:close()
			-- Destroy menu and permissions info in session so recalculated
			if sessiondata then sessiondata.menu = nil end
			if sessiondata then sessiondata.permissions = nil end
		end
	end
	return cfe({ value=cmdresult, label="Result of Delete" })
end

install_package = function(package,sessiondata)
	local cmdresult = "Install failed - Invalid package"
	local available = get_available_packages()
	for i,pack in pairs(available.value) do
		if pack == package then
			local cmd = "PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin apk_get install " .. package .. " 2>&1"
			local f = io.popen( cmd )
			cmdresult = f:read("*a")
			f:close()
			-- Destroy menu and permissions info in session so recalculated
			if sessiondata then sessiondata.menu = nil end
			if sessiondata then sessiondata.permissions = nil end
		end
	end
	return cfe({ value=cmdresult, label="Result of Install" })
end

get_config = function()
	local config = getopts.getoptsfromfile(configfile, "")
	local source = cfe({ value=config.APK_PATH or "", label="APK Source" })
	return cfe({ type="group", value={source=source}, label="APK Config" })
end

set_config = function(newconfig)
	-- FIXME - don't know how to validate
	if not getopts.setoptsinfile(configfile, "", "APK_PATH", newconfig.value.source.value) then
		newconfig.errtxt = "Failed to update config"
	end
	return newconfig
end