import { query, mutation } from "./_generated/server";
import { v } from "convex/values";
import { getAuthUserId } from "@convex-dev/auth/server";
import { DEFAULT_APP_SETTINGS, DEFAULT_CATEGORIES } from "./lib/seedCategories";
import { requireUserId } from "./lib/helpers";

export const currentUser = query({
  args: {},
  returns: v.union(
    v.object({
      _id: v.id("users"),
      _creationTime: v.number(),
      name: v.optional(v.string()),
      email: v.optional(v.string()),
      emailVerificationTime: v.optional(v.number()),
      image: v.optional(v.string()),
      isAnonymous: v.optional(v.boolean()),
    }),
    v.null(),
  ),
  handler: async (ctx) => {
    const userId = await getAuthUserId(ctx);
    if (!userId) return null;
    return await ctx.db.get("users", userId);
  },
});

export const ensureSeeded = mutation({
  args: {},
  returns: v.null(),
  handler: async (ctx) => {
    const userId = await requireUserId(ctx);

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

    if (!existingCategories) {
      for (const cat of DEFAULT_CATEGORIES) {
        await ctx.db.insert("categories", {
          userId,
          name: cat.name,
          kind: cat.kind,
          block: cat.block,
          color: cat.color,
          icon: cat.icon,
          sortOrder: cat.sortOrder,
          isSystem: true,
        });
      }
    }

    const existingSettings = await ctx.db
      .query("appSettings")
      .withIndex("by_user", (q) => q.eq("userId", userId))
      .unique();

    if (!existingSettings) {
      await ctx.db.insert("appSettings", {
        userId,
        ...DEFAULT_APP_SETTINGS,
      });
    }

    return null;
  },
});