import * as oak from "jsr:@oak/oak";

const port = Number(Deno.env.get("PORT") ?? 8000);

const router = new oak.Router();

router.post("/api/log", async (ctx) => {
    const data = await ctx.request.body.json();
    console.log(`POST /api/log ${JSON.stringify(data)}`);

    const enc = new TextEncoder();

    const postLog = await Deno.open("./data/log.txt", {
        append: true,
        create: true,
    });
    postLog.write(
        enc.encode(`${new Date().toISOString()}\t${JSON.stringify(data)}\n`),
    );

    ctx.response.body = { ok: true };
    ctx.respond = true;
});

router.get("/api/log", async (ctx) => {
    const postLog = await Deno.readTextFile("./data/log.txt");
    const entries = postLog
        .split("\n")
        .filter((l) => l)
        .map((entry) => entry.split("\t"))
        .map(([timestamp, data]) => ({
            timestamp: new Date(timestamp),
            data: JSON.parse(data),
        }));
    ctx.response.body = entries;
    ctx.respond = true;
});

console.log(`listening at http://localhost:${port}/`);

new oak.Application()
    .use(router.routes())
    .use(router.allowedMethods())
    .use(async (ctx) => {
        const { request: { url: { pathname } } } = ctx;
        await oak.send(ctx, pathname, {
            root: "./public",
            index: "index.html",
        });
    })
    .listen({ port });