var Connect = require("connect");
var ConnectSt = require("st");
var Fs = require("fs");
var Http = require("http");
var Route = require("connect-route");
var Winston = require("winston");

var DocumentHandler = require("./lib/document_handler");
var KeyGenerator = require("./lib/key_generator");
var Store = require("./lib/document_store");

// Load the configuration and set some defaults.
var config = JSON.parse(Fs.readFileSync("./config.js", "utf8"));
config.host = config.host || "127.0.0.1";
config.port = config.port || 7777;

// Set up the logger.
if (config.logging) {
  try {
    Winston.remove(Winston.transports.Console);
  } catch(e) {
    // This is fine.
  }
  var detail, type;
  for (var i = 0; i < config.logging.length; i++) {
    detail = config.logging[i];
    type = detail.type;
    delete detail.type;
    Winston.add(Winston.transports[type], detail);
  }
}

// Configure the data store.
store = new Store();

// Pick up a key generator.
var keyGenerator = new KeyGenerator({
  keyLength: config.keyLength,
  keySpace: config.keySpace
});

// Configure the document handler.
var documentHandler = new DocumentHandler({
  store: store,
  keyLength: config.keyLength,
  keyGenerator: keyGenerator
});

var app = Connect();

// Configure the API routes.
app.use(Route(function(router) {
  router.get("/raw/:id", function(request, response) {
    var key = request.params.id.split(".")[0];
    return documentHandler.handleRawGet(key, response);
  });
  router.post("/documents", function(request, response) {
    return documentHandler.handlePost(request, response);
  });
  router.get("/documents/:id", function(request, response) {
    var key = request.params.id.split(".")[0];
    return documentHandler.handleGet(key, response);
  });
}));

// Route static files.
app.use(ConnectSt({
  path: __dirname + "/static",
  content: { maxAge: config.staticMaxAge },
  passthrough: true,
  index: false
}));

// All the pastebin IDs.
app.use(Route(function(router) {
  router.get("/:id", function(request, response, next) {
    request.sturl = "/";
    next();
  });
}));

// Route index.html.
app.use(ConnectSt({
  path: __dirname + "/static",
  content: { maxAge: config.staticMaxAge },
  index: "index.html"
}));

Http.createServer(app).listen(config.port, config.host);

Winston.info("Listening on " + config.host + ":" + config.port);