#!/usr/bin/lua

lyaml = require("lyaml")

url_prefix="http://dl-cdn.alpinelinux.org/alpine"
t = { flavors={} }

flavor_def = {
	["alpine"] = {
		title = "Standard",
		desc = { 
			"Alpine as it was intended",
			"Just enough to get you started",
			"Network connection recommended",
		},
	},
	["alpine-extended"] = {
		title = "Extended",
		desc = {
			"Most common used packages included",
			"Suitable for routers and servers",
			"Runs from RAM",
		},
	},
	["alpine-vanilla"] = {
		title = "Vanilla",
		desc = {
			"Includes a vanilla kernel",
			"Does not include grsec patch set",
			"Suitable for debugging",
		},
	},
	["alpine-virt"] = {
		title = "Virtual",
		desc = {
			"Similar as standard",
			"Slimed down kernel",
			"Optimized for virtual systems",
		},
	},
	["alpine-xen"] = {
		title = "Xen",
		desc = {
			"Build-in support for Xen Hypervisor",
			"Includes packages targed at Xen usage",
			"Includes grsec kernel",
		},
	},
	["alpine-rpi"] = {
		title = "Raspberry Pi",
		desc = {
			"Includes Raspberry Pi kernel",
			"Does not include grsec patchset",
			"And much more...",
		},
	},
	["alpine-uboot"] = {
		title = "Generic ARM",
		desc = {
			"Has default ARM kernel",
			"Includes the uboot bootloader",
			"Packages targetted at armhf",
		}
	}
}

for i = 1,#arg do
	local f = assert(io.open(arg[i]))

	for _,v in pairs(lyaml.load(f:read("*a"))) do
		local y,m,d = v.date:match("(%d+)-(%d+)-(%d+)")
		v.datestr = os.date("%b %d, %Y", os.time{year=y, month=m, day=d})
		v.iso_url = ("%s/%s/releases/%s/%s"):format(url_prefix,
			v.branch, v.arch, v.iso)
		v.sha256_url = ("%s.sha256"):format(v.iso_url)
		v.sha1_url = ("%s.sha1"):format(v.iso_url)
		v.asc_url = ("%s.asc"):format(v.iso_url)
		v.sig_url = ("%s.sig"):format(v.iso_url)
		v.size_mb=math.floor(v.size/(1024*1024))


		local flavor = t[v.flavor]
		if flavor == nil then
			local def = flavor_def[v.flavor] or {title="", desc=""}
			flavor = {
				archs = {},
				flavor_title = def.title,
				flavor_desc = def.desc,
				flavor_name = string.lower(v.flavor),
			}
			table.insert(t.flavors, flavor)
		end
		flavor[v.arch] = v
		table.insert(flavor.archs, v)
		t[v.flavor] = flavor
	end
end

-- default release
t.default = t.alpine.x86_64

io.write(lyaml.dump{t})