#!/usr/bin/env node
/**
 * fill-brave-images.ts — Brave-only pass for remaining disease images.
 *
 * Runs at 1 request/sec (Brave rate limit).
 * Updates diseases.json and Turso DB.
 *
 * Usage: cd apps/web && npx tsx scripts/fill-brave-images.ts
 */

import dotenv from "dotenv"; dotenv.config({ path: resolve(__dirname, "../.env.local") });
import { readFileSync, writeFileSync } from "fs";
import { resolve } from "path";
import { createClient } from "@libsql/client";
import { closeDb } from "../src/lib/db/index";

const DISEASES_JSON = resolve(__dirname, "../src/data/diseases.json");
const BRAVE_KEY = process.env.BRAVE_API_KEY ?? "";

interface DiseaseSeed {
  id: string;
  plantId: string;
  name: string;
  scientificName: string;
  imageUrl?: string;
  [key: string]: unknown;
}

function load(): DiseaseSeed[] {
  return JSON.parse(readFileSync(DISEASES_JSON, "utf-8")) as DiseaseSeed[];
}

async function searchBraveImage(query: string): Promise<string | null> {
  const url = new URL("https://api.search.brave.com/res/v1/images/search");
  url.searchParams.set("q", query);
  url.searchParams.set("count", "3");

  for (let attempt = 0; attempt < 3; attempt++) {
    try {
      const res = await fetch(url.toString(), {
        headers: { "X-Subscription-Token": BRAVE_KEY, Accept: "application/json" },
      });
      if (res.status === 429) {
        await new Promise((r) => setTimeout(r, 5000 * 2 ** attempt));
        continue;
      }
      if (!res.ok) return null;
      const data = (await res.json()) as {
        results?: Array<{ url: string; thumbnail?: { src?: string } }>;
      };
      const results = data?.results ?? [];
      if (results.length === 0) return null;

      // Prefer non-stock direct-looking images
      for (const r of results) {
        const src = r.thumbnail?.src ?? r.url;
        if (src && !/(dreamstime|shutterstock|alamy|istock|123rf)/i.test(src)) return src;
      }
      return results[0].thumbnail?.src ?? results[0].url;
    } catch {
      await new Promise((r) => setTimeout(r, 2000));
    }
  }
  return null;
}

async function main() {
  console.log("\n🔍 Brave Image Search — remaining disease images\n");

  if (!BRAVE_KEY) {
    console.log("❌ No BRAVE_API_KEY in .env.local\n");
    process.exit(1);
  }

  const diseases = load();
  const pending = diseases.filter((d) => !d.imageUrl);
  console.log(`📋 ${pending.length} diseases need images\n`);

  let found = 0;

  for (let i = 0; i < pending.length; i++) {
    const d = pending[i];
    const plant = diseases.find((p) => p.id === d.plantId);
    const plantName = plant?.name ?? d.plantId;
    const query = `${d.name} ${plantName} plant disease symptom`;

    process.stdout.write(`  [${String(i + 1).padStart(2, " ")}/${pending.length}] ${d.name.padEnd(35)} `);

    const url = await searchBraveImage(query);
    if (url) {
      d.imageUrl = url;
      found++;
      console.log(`✅`);
    } else {
      console.log(`❌`);
    }

    // 1 req/sec rate limit
    await new Promise((r) => setTimeout(r, 1100));
  }

  // Write updated JSON
  writeFileSync(DISEASES_JSON, JSON.stringify(diseases, null, 2) + "\n", "utf-8");
  console.log(`\n✅ diseases.json updated: ${found}/${pending.length} images found\n`);

  // Update DB
  try {
    const dbUrl = process.env.DATABASE_URL;
    const dbToken = process.env.DATABASE_TOKEN;
    if (dbUrl && dbToken) {
      const raw = createClient({ url: dbUrl, authToken: dbToken });
      const updates = pending.filter((d) => d.imageUrl);
      for (let i = 0; i < updates.length; i += 50) {
        await raw.batch(
          updates.slice(i, i + 50).map((d) => ({
            sql: "UPDATE diseases SET image_url = ? WHERE id = ?",
            args: [d.imageUrl!, d.id],
          })),
          "write",
        );
      }
      raw.close();
      console.log(`✅ Turso DB updated: ${updates.length} rows`);
    } else {
      console.log("⏭️  Skipping DB — no DATABASE_URL/TOKEN");
    }
  } catch (err) {
    console.log(`   ⚠️  DB: ${err instanceof Error ? err.message : err}`);
  }

  // Summary
  const finalDiseases = JSON.parse(readFileSync(DISEASES_JSON, "utf-8")) as DiseaseSeed[];
  const stillMissing = finalDiseases.filter((d) => !d.imageUrl);
  console.log(`\n${"═".repeat(50)}`);
  console.log(`📊 FINAL: ${finalDiseases.length} total`);
  console.log(`   With images: ${finalDiseases.length - stillMissing.length}`);
  console.log(`   Still missing: ${stillMissing.length}`);
  if (stillMissing.length > 0) {
    console.log(`\nStill need human curation:`);
    for (const d of stillMissing) {
      console.log(`   ❌ ${d.name} (${d.id})`);
    }
  }
  console.log(`${"═".repeat(50)}\n`);

  closeDb();
}

main().catch((err) => {
  console.error("\n❌ Fatal:", err);
  process.exit(1);
});