// Setup global environment
require("marko/node-require").install()
require("es6-promise").polyfill()

// Load server config
const config = require("./config")

// Load utilities
const build = require("./builder")

// Express depedencies
const express = require("express")
const proxy = require("express-http-proxy")
const lasso = require("lasso")
const lassoMiddleware = require("lasso/middleware")
const markoExpress = require("marko/express")
const bodyParser = require("body-parser")

// Load middleware
const passport = require("./middleware/passport")
const session = require("./middleware/session")

// Setup express
const app = express()

// Configure lasso
const isProduction = process.env.NODE_ENV === "production"
lasso.configure({
  plugins: [
    "lasso-marko",
    "lasso-less",
  ],
  outputDir: "./.static", // Place all generated JS/CSS/etc. files into the "static" dir
  bundlingEnabled: isProduction, // Only enable bundling in production
  minify: isProduction, // Only minify JS and CSS code in production
  fingerprintsEnabled: true, // Only add fingerprints to URLs in production

  require: {
    builtins: {
      fs: require.resolve("empty-module"),
    },

    transforms: isProduction ? [
      {
        transform: "lasso-babel-transform",
        config: {
          extensions: [".js", ".es6"], // Enabled file extensions. Default: [".js", ".es6"]
          babelOptions: {
            presets: [ "es2015" ]
          }
        }
      }
    ] : null
  }
})

// Set trusted proxy
if (config.trustedProxy != null) {
  app.set('trust proxy', config.trustedProxy)
}

// Apply middleware
app.use(markoExpress())
app.use(session)
app.use(passport.initialize())
app.use(passport.session())
app.use(require("./middleware/locals"))
app.use(bodyParser.json({limit: "1mb"}))
app.use(bodyParser.text({limit: "256kb"}))

// Static assets
app.use("/assets", express.static(__dirname + "/assets"))
app.use(lassoMiddleware.serveStatic())

// Authentication
app.use("/auth", require("./routes/auth"))

// API Proxy
app.use("/graphql", require("./routes/graphql"))
app.use("/playground", proxy(config.playgroundEndpoint))

// Page routes
app.use("/story/", require("./routes/story"))
app.use("/story/by-category/", require("./routes/story/by-category"))
app.use("/story/by-tag/", require("./routes/story/by-tag"))
app.use("/story/by-month/", require("./routes/story/by-month"))
app.use("/story/by-author/", require("./routes/story/by-author"))
app.use("/story/tag-list/", require("./routes/story/tag-list"))
app.use("/story/:id(S[0-9a-z]{15})/", require("./routes/story-content"))
app.use("/logs/", require("./routes/logs"))
app.use("/logs/:id([0-9]{4}-[0-1][0-9]-[0-3][0-9]_[0-9]{9}_[A-Za-z\,\']{2,})/", require("./routes/logs-content"))
app.use("/logs/:id(L[0-9]{0,7})/", require("./routes/logs-content"))
app.use("/data/", require("./routes/data"))
app.use("/data/characters/", require("./routes/data/characters"))
app.use("/data/channels/", require("./routes/data/channels"))

// Entry point
app.get("/", function(req, res) {
  res.redirect("/story/")
})

async function main() {
  // Build templates
  if (isProduction) {
    await build("./marko/page/story/list.marko")
    await build("./marko/page/story/tag-list.marko", {tags: []})
    await build("./marko/page/logs/list.marko")
    await build("./marko/page/data/channels.marko", {channels: [], user: {}})
    await build("./marko/page/data/characters.marko", {characters: [], user: {}})
    await build("./marko/page/story-content/view.marko", {story: {chapters: []}})
    await build("./marko/page/logs-content/view.marko", {log: {posts: [], channel: {}}})
  }

  // Start server
  app.listen(config.port, function() {
    console.log("Server started: http://localhost:" + config.port + "/")

    if (process.send) {
      setTimeout(() => process.send("online"), 100)
    }
  })
}

// Handle shutdown signals (Docker needs this to shutdown quickly)
process.on('SIGINT', () => process.exit(0))
process.on('SIGTERM', () => process.exit(0))

main().catch(err => {
  console.error(err)
  process.exit(1)
})