#!/usr/bin/env lua
local sitelib = require "sitelib"
local fs = require "lfs"

print("Reading blog entries")
local mdfiles = {}
for file in fs.dir(sitelib.srcpath.."/blog/") do
 if file:sub(1,1) ~= "." then
  local index = tonumber(file:match("(%d+).md"))
  if index then
   mdfiles[index] = file
  end
 end
end

if not fs.attributes(sitelib.gopherpath) then
 fs.mkdir(sitelib.gopherpath)
end

local index=""
print("Generating index")
for k,infile in ipairs(mdfiles) do
 local fpath = "/blog/"..infile
 local infile = sitelib.srcpath.."/blog/"..infile
 print(infile,fpath)
 local f = io.open(infile,"rb")
 local c = f:read("*a")
 f:close()
 local page = sitelib.parsepage(c)
 if page.date then page.title = string.format("%s (%s)",page.title,page.date) end
 local fline = page.md:match("\n\n(.-)\n")
 index = string.format("0%s\t%s\t%s\t%d\ni%s\ni\n%s",page.title,fpath,sitelib.hostname,sitelib.gopherport,fline,index)
end
index=sitelib.gheader .. index .. sitelib.gfooter

local f = io.open(sitelib.gopherpath.."/blog/.gopherdir","wb")
f:write(index)
f:close()