import { supabase } from "@/integrations/supabase/client";

const SUPABASE_URL = import.meta.env.VITE_SUPABASE_URL;

// Anti-spam: debounce tracking
let lastSearchTime = 0;
const SEARCH_COOLDOWN = 500; // ms between searches

async function callFetchMods(params: Record<string, string>) {
  const now = Date.now();
  if (now - lastSearchTime < SEARCH_COOLDOWN) {
    await new Promise((r) => setTimeout(r, SEARCH_COOLDOWN - (now - lastSearchTime)));
  }
  lastSearchTime = Date.now();

  const searchParams = new URLSearchParams(params);
  const url = `${SUPABASE_URL}/functions/v1/fetch-mods?${searchParams.toString()}`;
  const response = await fetch(url, {
    headers: {
      Authorization: `Bearer ${import.meta.env.VITE_SUPABASE_PUBLISHABLE_KEY}`,
    },
  });

  if (response.status === 429) {
    throw new Error("تم تجاوز الحد المسموح، حاول مرة أخرى بعد قليل");
  }

  if (!response.ok) {
    throw new Error(`API error: ${response.status}`);
  }

  return response.json();
}

export async function getUserProjects(username = "fxfelixzero") {
  return callFetchMods({ action: "user_projects", username });
}

export async function searchMods(query: string, offset = 0, limit = 20) {
  // Sanitize client-side too
  const cleanQuery = query.slice(0, 200).replace(/[<>{}]/g, "").trim();
  if (!cleanQuery) return { hits: [], total_hits: 0 };
  return callFetchMods({ action: "search", query: cleanQuery, offset: String(offset), limit: String(limit) });
}

export async function getProject(id: string) {
  if (!/^[a-zA-Z0-9_-]+$/.test(id)) throw new Error("Invalid project id");
  return callFetchMods({ action: "project", id });
}

export async function getProjectVersions(id: string) {
  if (!/^[a-zA-Z0-9_-]+$/.test(id)) throw new Error("Invalid project id");
  return callFetchMods({ action: "versions", id });
}

export async function translateQuery(query: string): Promise<{ translated: string; original: string }> {
  const cleanQuery = query.slice(0, 200).trim();
  if (!cleanQuery) return { translated: query, original: query };

  const { data, error } = await supabase.functions.invoke("translate-search", {
    body: { query: cleanQuery },
  });

  if (error) {
    console.error("Translation error:", error);
    return { translated: query, original: query };
  }

  return data;
}

// Random search keywords for homepage
const RANDOM_KEYWORDS = ["world", "mod", "skin", "map", "adventure", "survival", "building", "tools", "armor", "biome"];

export function getRandomKeyword(): string {
  return RANDOM_KEYWORDS[Math.floor(Math.random() * RANDOM_KEYWORDS.length)];
}