sysPath = require "path"
fs =require "fs"
marked = require 'marked'
existsSync = fs.existsSync or sysPath.existsSync
module.exports = (app, options) ->
app.get /^\/(.*\.(?:markdown|md))$/, (req, res, next) ->
path = sysPath.join options.dir, req.params[0]
if existsSync path
fs.readFile path, "utf8", (err, data) ->
return next(err) if err
markdown = marked data
resBody =
"""
Puer Markdown Preview
#{markdown}
"""
res.setHeader "Content-Type", "text/html"
# not charlength but bytelength
res.setHeader "Content-Length", Buffer.byteLength resBody
res.send resBody
else
next()