import { mutation, query } from "./_generated/server";
import { v } from "convex/values";
import { getAuthUserId } from "@convex-dev/auth/server";

export const getCurrent = query({
  args: {},
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (!userId) return null;
    return await ctx.db.get(userId);
  },
});

export const getCurrentProfile = query({
  args: {},
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (!userId) return null;
    const user = await ctx.db.get(userId);
    if (!user) return null;
    const accounts = await ctx.db
      .query("authAccounts")
      .withIndex("userIdAndProvider", (q) => q.eq("userId", userId))
      .collect();
    return { user, accounts };
  },
});

export const touch = mutation({
  args: {},
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (!userId) return null;

    const today = new Date().toISOString().slice(0, 10);
    const yesterday = new Date(Date.now() - 24 * 60 * 60 * 1000)
      .toISOString()
      .slice(0, 10);

    const existing = await ctx.db
      .query("userActivity")
      .withIndex("by_user", (q) => q.eq("userId", userId))
      .first();

    if (!existing) {
      await ctx.db.insert("userActivity", {
        userId,
        lastActiveDate: today,
        streak: 1,
        updatedAt: Date.now(),
      });
      return { lastActiveDate: today, streak: 1 };
    }

    if (existing.lastActiveDate === today) {
      return { lastActiveDate: existing.lastActiveDate, streak: existing.streak };
    }

    const streak =
      existing.lastActiveDate === yesterday ? existing.streak + 1 : 1;

    await ctx.db.patch(existing._id, {
      lastActiveDate: today,
      streak,
      updatedAt: Date.now(),
    });

    return { lastActiveDate: today, streak };
  },
});

export const getActivity = query({
  args: {},
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (!userId) return null;

    const activity = await ctx.db
      .query("userActivity")
      .withIndex("by_user", (q) => q.eq("userId", userId))
      .first();

    return activity ?? null;
  },
});