import { TYPE } from "./activity.js";
import { CollectionEntry, orderedCollection } from "./collection.js";
import db from "./db.js";
import { fillRoute } from "./router.js";
import { get as getUserByNickname } from "./user.js";
import { Request, Response } from "express";

export interface Follower {
    actor: string,
    nickname: string,
    name: string,
    inbox: string | null,
    shared_inbox: string | null
};

export const getFollowers = async (userId: number): Promise<Follower[]> =>
    db<CollectionEntry>("collections")
        .select("remote_users.*", "collections.value")
        .join("remote_users", "remote_users.actor", "=", "collections.value")
        .where("collection_types_id", 0)
        .where("users_id", userId)
        .orderBy("collections.created_at", "desc")
    ;

export const addFollower = async (followeeUserId: number, actor: string, nickname: string, name: string, inbox?: string, sharedInbox?: string) => {
    await db("remote_users")
        .insert({
            actor,
            nickname,
            name,
            inbox,
            shared_inbox: sharedInbox
        })
        .onConflict().ignore();
    ;

    await db("collections")
        .insert({
            collection_types_id: 0,
            users_id: followeeUserId,
            value: actor,
            created_at: new Date()
        })
        .onConflict().ignore()
    ;

    console.log("Follower added");
};

export const handleFollowerGet = async (req: Request<{ actor: string}>, res: Response) => {
    const user = await getUserByNickname(req.params.actor);

    if (user) {
        const followers = await getFollowers(user.id);
        const payload = orderedCollection(fillRoute("followers", user.nickname), followers);
        res.set("Content-Type", TYPE);
        res.send(JSON.stringify(payload, null, 4));
    }
    else {
        res.status(403).end();
    }
};