import fs from "fs";
import path from "path";
import { createClient } from "@sanity/client";
import dotenv from "dotenv";

// Load studio environment variables
dotenv.config({ path: path.resolve("studio/.env.local") });

const projectId = process.env.SANITY_STUDIO_PROJECT_ID || "gdvj8e5j";
const dataset = process.env.SANITY_STUDIO_DATASET || "production";
const token = process.env.SANITY_AUTH_TOKEN;

const SEED_FILE = path.resolve("studio/data/seed-data.ndjson");

async function main() {
  console.log(`\n🌿 VWG Blog v2 — Sanity Seeding Tool`);
  console.log(`Project ID: ${projectId}`);
  console.log(`Dataset:    ${dataset}`);

  if (!token || token === "sanity-auth-token" || token.length < 10) {
    console.log(`\n⚠️  No valid SANITY_AUTH_TOKEN found in studio/.env.local.`);
    console.log(`\nTo import these 12 initial documents into your Sanity Content Lake, you have 2 easy options:`);
    console.log(`\n👉 OPTION 1 (Automated with API Token - Recommended):`);
    console.log(`   1. Open: https://www.sanity.io/manage/project/${projectId}/api#tokens`);
    console.log(`   2. Click "+ Add API token", name it "Studio Seed", select "Editor" (or "Contributor"), and create.`);
    console.log(`   3. Add the token to studio/.env.local:`);
    console.log(`      SANITY_AUTH_TOKEN=sk...`);
    console.log(`   4. Re-run: node studio/scripts/import-seed.mjs`);
    console.log(`\n👉 OPTION 2 (Sanity CLI Login):`);
    console.log(`   1. In terminal, run: npx sanity login`);
    console.log(`   2. Run: npx sanity dataset import studio/data/seed-data.ndjson production --replace`);
    console.log(`\n👉 OPTION 3 (Web Studio):`);
    console.log(`   Open http://localhost:3333 in your browser, log in, and view or create content directly!\n`);
    process.exit(0);
  }

  const client = createClient({
    projectId,
    dataset,
    token,
    apiVersion: "2024-10-31",
    useCdn: false,
  });

  if (!fs.existsSync(SEED_FILE)) {
    console.error(`❌ Seed file not found at ${SEED_FILE}. Run 'node studio/scripts/generate-seed.mjs' first.`);
    process.exit(1);
  }

  const lines = fs.readFileSync(SEED_FILE, "utf8").trim().split("\n");
  console.log(`\nFound ${lines.length} documents in seed-data.ndjson. Importing into Sanity...`);

  for (let i = 0; i < lines.length; i++) {
    const doc = JSON.parse(lines[i]);
    try {
      await client.createOrReplace(doc);
      console.log(`  ✓ [${i + 1}/${lines.length}] ${doc._type}: ${doc._id} (${doc.title || doc.name || doc.siteName || ""})`);
    } catch (err) {
      console.error(`  ✗ Failed to import ${doc._id}:`, err.message);
    }
  }

  console.log(`\n🎉 All documents successfully seeded into Sanity project '${projectId}' (${dataset})!`);
  console.log(`You can now view them at http://localhost:3333\n`);
}

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