import { query, mutation } from "./_generated/server";
import { v } from "convex/values";

export const list = query({
  args: { status: v.optional(v.union(v.literal("open"), v.literal("closed"))) },
  handler: async (ctx, args) => {
    if (args.status) {
      return await ctx.db
        .query("posts")
        .withIndex("by_status", (q) => q.eq("status", args.status!))
        .order("desc")
        .collect();
    }
    return await ctx.db.query("posts").order("desc").collect();
  },
});

export const getByCustomer = query({
  args: { customerId: v.id("users") },
  handler: async (ctx, args) => {
    return await ctx.db
      .query("posts")
      .withIndex("by_customer", (q) => q.eq("customerId", args.customerId))
      .order("desc")
      .collect();
  },
});

export const getById = query({
  args: { id: v.id("posts") },
  handler: async (ctx, args) => {
    return await ctx.db.get(args.id);
  },
});

export const create = mutation({
  args: {
    token: v.string(),
    title: v.string(),
    description: v.string(),
    category: v.optional(v.string()),
    location: v.optional(v.string()),
    budget: v.optional(v.string()),
  },
  handler: async (ctx, args) => {
    const session = await ctx.db
      .query("sessions")
      .withIndex("by_token", (q) => q.eq("token", args.token))
      .first();
    if (!session) throw new Error("Неавторизиран");

    const user = await ctx.db.get(session.userId);
    if (!user) throw new Error("Корисникот не е пронајден");

    const now = Date.now();
    const postId = await ctx.db.insert("posts", {
      customerId: session.userId,
      title: args.title,
      description: args.description,
      category: args.category,
      location: args.location,
      budget: args.budget,
      status: "open",
      createdAt: now,
      updatedAt: now,
    });

    return postId;
  },
});

export const close = mutation({
  args: {
    token: v.string(),
    postId: v.id("posts"),
  },
  handler: async (ctx, args) => {
    const session = await ctx.db
      .query("sessions")
      .withIndex("by_token", (q) => q.eq("token", args.token))
      .first();
    if (!session) throw new Error("Неавторизиран");

    const post = await ctx.db.get(args.postId);
    if (!post) throw new Error("Побарувањето не е пронајдено");
    if (post.customerId !== session.userId) throw new Error("Само авторот може да го затвори побарувањето");

    await ctx.db.patch(args.postId, { status: "closed", updatedAt: Date.now() });
    return true;
  },
});