import Router from "@koa/router";
import config from "../config/index.js";
import * as Acct from "../misc/acct.js";
import { links } from "./nodeinfo.js";
import { escapeAttribute, escapeValue } from "../prelude/xml.js";
import { Users } from "../models/index.js";
import { IsNull } from "typeorm";
// Init router
const router = new Router();
const XRD = (...x)=>`<?xml version="1.0" encoding="UTF-8"?><XRD xmlns="http://docs.oasis-open.org/ns/xri/xrd-1.0">${x.map(({ element, value, attributes })=>`<${Object.entries(typeof attributes === "object" && attributes || {}).reduce((a, [k, v])=>`${a} ${k}="${escapeAttribute(v)}"`, element)}${typeof value === "string" ? `>${escapeValue(value)}</${element}` : "/"}>`).reduce((a, c)=>a + c, "")}</XRD>`;
const allPath = "/.well-known/{*splat}";
const webFingerPath = "/.well-known/webfinger";
const jrd = "application/jrd+json";
const xrd = "application/xrd+xml";
router.use(allPath, async (ctx, next)=>{
    ctx.set({
        "Access-Control-Allow-Headers": "Accept",
        "Access-Control-Allow-Methods": "GET, OPTIONS",
        "Access-Control-Allow-Origin": "*",
        "Access-Control-Expose-Headers": "Vary"
    });
    await next();
});
router.options(allPath, async (ctx)=>{
    ctx.status = 204;
});
router.get("/.well-known/host-meta", async (ctx)=>{
    ctx.set("Content-Type", xrd);
    ctx.body = XRD({
        element: "Link",
        attributes: {
            rel: "lrdd",
            type: xrd,
            template: `${config.url}${webFingerPath}?resource={uri}`
        }
    });
});
router.get("/.well-known/host-meta.json", async (ctx)=>{
    ctx.set("Content-Type", jrd);
    ctx.body = {
        links: [
            {
                rel: "lrdd",
                type: jrd,
                template: `${config.url}${webFingerPath}?resource={uri}`
            }
        ]
    };
});
if (config.twa != null) {
    router.get("/.well-known/assetlinks.json", async (ctx)=>{
        ctx.set("Content-Type", "application/json");
        ctx.body = [
            {
                relation: [
                    "delegate_permission/common.handle_all_urls"
                ],
                target: {
                    namespace: config.twa.nameSpace,
                    package_name: config.twa.packageName,
                    sha256_cert_fingerprints: config.twa.sha256CertFingerprints
                }
            }
        ];
    });
}
router.get("/.well-known/nodeinfo", async (ctx)=>{
    ctx.body = {
        links
    };
});
/* TODO
router.get('/.well-known/change-password', async ctx => {
});
*/ router.get(webFingerPath, async (ctx)=>{
    const fromId = (id)=>({
            id,
            host: IsNull(),
            isSuspended: false
        });
    const generateQuery = (resource)=>resource.startsWith(`${config.url.toLowerCase()}/users/`) ? fromId(resource.split("/").pop()) : fromAcct(Acct.parse(resource.startsWith(`${config.url.toLowerCase()}/@`) ? resource.split("/").pop() : resource.startsWith("acct:") ? resource.slice("acct:".length) : resource));
    const fromAcct = (acct)=>!acct.host || acct.host === config.host.toLowerCase() || acct.host === config.domain.toLowerCase() ? {
            usernameLower: acct.username,
            host: IsNull(),
            isSuspended: false
        } : 422;
    if (typeof ctx.query.resource !== "string") {
        ctx.status = 400;
        return;
    }
    const query = generateQuery(ctx.query.resource.toLowerCase());
    if (typeof query === "number") {
        ctx.status = query;
        return;
    }
    const user = await Users.findOneBy(query);
    if (user == null) {
        ctx.status = 404;
        return;
    }
    const subject = `acct:${user.username}@${config.domain}`;
    const self = {
        rel: "self",
        type: "application/activity+json",
        href: `${config.url}/users/${user.id}`
    };
    const profilePage = {
        rel: "http://webfinger.net/rel/profile-page",
        type: "text/html",
        href: `${config.url}/@${user.username}`
    };
    const subscribe = {
        rel: "http://ostatus.org/schema/1.0/subscribe",
        template: `${config.url}/authorize-follow?acct={uri}`
    };
    if (ctx.accepts(jrd, xrd) === xrd) {
        ctx.body = XRD({
            element: "Subject",
            value: subject
        }, {
            element: "Link",
            attributes: self
        }, {
            element: "Link",
            attributes: profilePage
        }, {
            element: "Link",
            attributes: subscribe
        });
        ctx.type = xrd;
    } else {
        ctx.body = {
            subject,
            links: [
                self,
                profilePage,
                subscribe
            ]
        };
        ctx.type = jrd;
    }
    ctx.vary("Accept");
    ctx.set("Cache-Control", "public, max-age=180");
});
// Return 404 for other .well-known
router.all(allPath, async (ctx)=>{
    ctx.status = 404;
});
export default router;