import { Hono } from 'hono'
const app = new Hono()
const joypixels = require("emoji-toolkit");
import { mkdirSync, writeFileSync, existsSync, exists, readFileSync } from 'fs'
import { $ } from 'bun';


app.post('/render', async (c) => {
    const auth = c.req.header('Authorization')
    if (auth !== process.env.PASSWORD) {
        return c.text('Unauthorized', 401)
    }

    const body = await c.req.json().catch(() => null)
    if (!body?.emoji) {
        return c.text('Missing emoji in body', 400)
    }
    
    let extraArgs = "-b"
    
    if(body?.extraArgs) {
        if (typeof body.extraArgs !== 'string') {
            return c.text('extraArgs must be a string', 400)
        }
        extraArgs = body.extraArgs;
    }

    const emojiHtml = joypixels.toImage(body.emoji)
    const urlMatch = emojiHtml.match(/src="([^"]*)"/)
    if (!urlMatch) {
        return c.text('Could not extract emoji URL', 500)
    }
    const emojiUrl = urlMatch[1]

    const filename = "cache/" + emojiUrl.split('/').pop() ;
    if(!existsSync(filename)) {

        // Download the image
        const res = await fetch(emojiUrl)
        if (!res.ok) {
            return c.text('Failed to download emoji image', 500)
        }
        const arrayBuffer = await res.arrayBuffer()
        const buffer = Buffer.from(arrayBuffer)

        // Ensure cache directory exists
        if (!existsSync('cache')) {
            mkdirSync('cache')
        }

        // Get filename from URL
        writeFileSync(filename, buffer)
    }

    if(!existsSync(filename+".bimg")) {
       await $`sanjuuni --disable-opencl ${extraArgs} -i ${filename} -o ${filename+".bimg"}`
    }

    const bimg = readFileSync(filename + ".bimg", "utf8");

    return c.text(bimg)
})

export default { 
  port: 7427,
  host: "127.0.0.1",
  fetch: app.fetch, 
}