import { NodePgDatabase } from "drizzle-orm/node-postgres";
import { Express } from "express";
import { follows, profiles, updates, users } from "../db/schema.js";
import { and, desc, eq } from "drizzle-orm";
import { getMoods, render } from "./util.js";
import { PgColumn } from "drizzle-orm/pg-core";
import dayjs from "dayjs";

export default async function (app: Express, db: NodePgDatabase) {
  const { moods } = await getMoods();
  app.get("/users/:user", async (req, res) => {
    const isSelf = req.params.user === req.session["user"];

    const user = (
      await db
        .select({
          id: users.id,
          name: users.name,
          bio: profiles.bio,
          website: profiles.website
        })
        .from(users)
        .where(eq(users.name, req.params.user))
        .leftJoin(profiles, eq(profiles.user, users.id))
    )[0];
    if (!user) {
      req.flash("error", `User ${req.params.user} does not exist`);
      res.redirect("/");
      return;
    }

    // follows
    const isFollowing = !!(
      await db
        .select()
        .from(follows)
        .where(
          and(
            eq(follows.followerId, req.session["uid"]),
            eq(follows.userId, user.id)
          )
        )
        .limit(1)
    )[0];

    // mood
    let moodSelection: { [k: string]: PgColumn } = {
      desc: updates.description,
      date: updates.date
    };
    if (!isSelf) moodSelection.mood = updates.mood;
    const userMood: { [k: string]: string | number | Date } = (
      await db
        .select(moodSelection)
        .from(updates)
        .where(eq(updates.user, user.id))
        .orderBy(desc(updates.date))
        .limit(1)
    )[0];

    // feed
    const now = dayjs();
    const userMoodFeed = (await db
      .select({
        mood: updates.mood,
        date: updates.date,
        desc: updates.description
      })
      .from(updates)
      .where(eq(updates.user, user.id))).map((e) => {
        return { user: user.name, mood: moods[e.mood], date: now.to(dayjs(e.date)), desc: e.desc }
      });

    if (!isSelf) {
      userMood.mood = moods[userMood.mood as number];
    }

    render(db, "user", `${req.params.user}'s Profile`, res, req, {
      user,
      isSelf,
      userMood,
      userMoodFeed,
      isFollowing
    });
  });
  app.post("/users/:user/edit", async (req, res) => {
    if (!req.session["loggedIn"]) {
      res.redirect("/login");
      return;
    }
    const { uname, mod } = (
      await db
        .select({ uname: users.name, mod: users.moderator })
        .from(users)
        .where(eq(users.name, req.params.user))
    )[0];
    if ((uname || "") !== req.session["user"] && !mod) {
      res.redirect("back");
      return;
    }

    await db //! no sanitization here either BROOOOOOO
      .update(profiles)
      .set({
        // @ts-expect-error
        bio: req.body.bio,
        website: req.body.website
      })
      .where(eq(profiles.user, req.session["uid"]));
    req.flash("success", "Profile updated!");
    res.redirect("/dashboard");
  });
  app.post("/users/:user/follow", async (req, res) => {
    if (!req.session["loggedIn"]) {
      res.redirect("/login");
      return;
    }
    if (req.session["user"] === req.params.user) {
      req.flash("error", "Can't Follow Yourself Dummy");
      res.redirect(`/users/${req.params.user}`);
      return;
    }

    const { uid } = (
      await db
        .select({ uid: users.id })
        .from(users)
        .where(eq(users.name, req.params.user))
    )[0];
    if (!uid) {
      req.flash(
        "error",
        "It looks like you're trying to follow a user that doesn't exist anymore."
      );
      res.redirect("/");
      return;
    }
    const isFollowing = !!(
      await db
        .select()
        .from(follows)
        .where(
          and(
            eq(follows.followerId, req.session["uid"]),
            eq(follows.userId, uid)
          )
        )
        .limit(1)
    )[0];
    if (isFollowing) {
      // unfollow
      await db
        .delete(follows)
        .where(
          and(
            eq(follows.followerId, req.session["uid"]),
            eq(follows.userId, uid)
          )
        );
    } else {
      await db.insert(follows).values({
        userId: uid,
        followerId: req.session["uid"]
      });
    }
    res.redirect(`/users/${req.params.user}`);
  });
}