import chokidar from "chokidar"
import express from "express"
import fs from "fs"
import njk from "nunjucks"
import sass from "sass"

const server = express()

njk.configure(
    "./web",
    {
        autoescape: true,
        express: server,
        lstripBlocks: true,
        trimBlocks: true,
        watch: true
    }
)

chokidar.watch("./src").on("change", () => {
    console.log("Detected changes in SCSS! Recompiling...")

    try {
        const { css } = sass.compile(
            "./src/main.scss",
            {
                sourceMap: false,
                alertColor: true,
                style: "compressed"
            }
        )

        console.log("Compile done! Saving changes...")

        if (!fs.existsSync("./out"))
            fs.mkdirSync("./out")

        fs.writeFileSync(
            "./out/main.css",
            css
        )

        console.log("Saved!")
    } catch (error) {
        console.log("Error while compiling!")
        console.error(error)
    }
})

server.use("/assets", express.static("./out"))

server.get(
    "*",
    (req, res) => {
        const path = req.path
            .replace(/^\/|\.\.+|\/$/g, "")

        if (fs.existsSync(`web/pages/${path}.njk`))
            return res.render(`pages/${path}.njk`)

        if (fs.existsSync(`web/pages/${path}/index.njk`))
            return res.render(`pages/${path}/index.njk`)

        res.status(404).send("Not Found")
    }
)

server.listen(12345, () => console.log("Dev server started and listening on port 12345!"))