#!/usr/bin/env node
/**
 * fill-plant-images-v2.ts — Batch Wikipedia image fetch for remaining plants.
 *
 * Phase 1: Query 50 scientific names at a time via pageimages.
 * Phase 2: Query 50 common names at a time.
 * Phase 3: Search individually for stragglers.
 *
 * Usage: cd apps/web && npx tsx scripts/fill-plant-images-v2.ts
 */

import { readFileSync, writeFileSync } from "fs";
import { resolve } from "path";

// Load env
const envPath = resolve(__dirname, "../.env.development");
try {
  const env = readFileSync(envPath, "utf-8");
  for (const line of env.split("\n")) {
    const trimmed = line.trim();
    if (trimmed && !trimmed.startsWith("#")) {
      const eqIdx = trimmed.indexOf("=");
      if (eqIdx > 0) {
        const key = trimmed.slice(0, eqIdx).trim();
        const val = trimmed.slice(eqIdx + 1).trim();
        if (!process.env[key]) {
          process.env[key] = val;
        }
      }
    }
  }
} catch (e) {}

import { getDb, closeDb } from "../src/lib/db/index";
import { plants } from "../src/lib/db/schema";
import { createClient } from "@libsql/client";
import { sql } from "drizzle-orm";

const API = "https://en.wikipedia.org/w/api.php";
const UA = "PlantHealthKB/1.0";
const BATCH = 50;

interface PlantRow {
  id: string;
  commonName: string;
  scientificName: string;
}

function clean(s: string): string {
  return s
    .replace(/[xX]/g, "x")
    .replace(/\s*spp\.?\s*/gi, "")
    .replace(/[.\u00d7']/g, "")
    .trim();
}

async function fetchThumbs(titles: string[]): Promise<Map<string, string>> {
  if (titles.length === 0) {
    return new Map();
  }
  const p = new URLSearchParams({
    action: "query",
    titles: titles.join("|"),
    prop: "pageimages",
    pithumbsize: "400",
    redirects: "1",
    format: "json",
  });
  for (let a = 0; a < 3; a++) {
    try {
      const r = await fetch(API + "?" + p.toString(), {
        headers: { "User-Agent": UA },
      });
      if (r.status === 429) {
        await new Promise((rr) => setTimeout(rr, 5000 * Math.pow(2, a)));
        continue;
      }
      if (!r.ok) {
        return new Map();
      }
      const d = (await r.json()) as any;
      const pages = d?.query?.pages;
      if (!pages) {
        return new Map();
      }
      const m = new Map<string, string>();
      for (const [, pg] of Object.entries(pages)) {
        const p2 = pg as any;
        if (!p2.missing && p2.thumbnail?.source) {
          m.set(p2.title.toLowerCase(), p2.thumbnail.source);
        }
      }
      return m;
    } catch (e) {
      await new Promise((rr) => setTimeout(rr, 2000));
    }
  }
  return new Map();
}

async function searchOne(query: string): Promise<string | null> {
  const p = new URLSearchParams({
    action: "query",
    generator: "search",
    gsrsearch: query,
    gsrlimit: "3",
    prop: "pageimages",
    pithumbsize: "400",
    format: "json",
  });
  for (let a = 0; a < 3; a++) {
    try {
      const r = await fetch(API + "?" + p.toString(), {
        headers: { "User-Agent": UA },
      });
      if (r.status === 429) {
        await new Promise((rr) => setTimeout(rr, 5000 * Math.pow(2, a)));
        continue;
      }
      if (!r.ok) {
        return null;
      }
      const d = (await r.json()) as any;
      const pages = d?.query?.pages;
      if (!pages) {
        return null;
      }
      for (const [, pg] of Object.entries(pages)) {
        const p2 = pg as any;
        if (p2.thumbnail?.source) {
          return p2.thumbnail.source;
        }
      }
      return null;
    } catch (e) {
      await new Promise((rr) => setTimeout(rr, 2000));
    }
  }
  return null;
}

async function batchPhase(
  plants: PlantRow[],
  titleFn: (p: PlantRow) => string,
  label: string,
  dbClient: any,
): Promise<PlantRow[]> {
  const remaining: PlantRow[] = [];
  const updates: Array<{ id: string; url: string }> = [];

  for (let i = 0; i < plants.length; i += BATCH) {
    const chunk = plants.slice(i, i + BATCH);
    const titles = chunk.map(titleFn).filter((t) => t.length > 2);
    console.log(
      "  [" +
        label +
        "] " +
        (i + 1) +
        "-" +
        Math.min(i + BATCH, plants.length) +
        "/" +
        plants.length +
        " ",
    );
    const imageMap = await fetchThumbs(titles);
    let n = 0;
    for (const pl of chunk) {
      const t = titleFn(pl).toLowerCase();
      const img = imageMap.get(t);
      if (img) {
        updates.push({ id: pl.id, url: img });
        n++;
      } else {
        remaining.push(pl);
      }
    }
    console.log("    found: " + n);
    if (updates.length >= 100) {
      await dbClient.batch(
        updates.map((u) => ({
          sql: "UPDATE plants SET image_url = ?, updated_at = datetime('now') WHERE id = ?",
          args: [u.url, u.id],
        })),
        "write",
      );
      updates.length = 0;
    }
    await new Promise((r) => setTimeout(r, 1500));
  }

  if (updates.length > 0) {
    await dbClient.batch(
      updates.map((u) => ({
        sql: "UPDATE plants SET image_url = ?, updated_at = datetime('now') WHERE id = ?",
        args: [u.url, u.id],
      })),
      "write",
    );
  }

  return remaining;
}

async function main() {
  console.log("\nPlant Image Filler v2\n");
  const db = getDb();
  const allPlants = (await db
    .select({
      id: plants.id,
      commonName: plants.commonName,
      scientificName: plants.scientificName,
    })
    .from(plants)
    .where(sql`(image_url IS NULL OR image_url = '')`)
    .all()) as PlantRow[];

  console.log("Plants needing images: " + allPlants.length + "\n");
  if (allPlants.length === 0) {
    console.log("All plants have images!\n");
    closeDb();
    return;
  }

  const raw = createClient({
    url: process.env.DATABASE_URL!,
    authToken: process.env.DATABASE_TOKEN!,
  });
  let found = 0;

  // Phase 1: Scientific name
  console.log("--- Phase 1: Scientific names ---\n");
  let remaining = await batchPhase(allPlants, (p) => clean(p.scientificName), "sci", raw);

  // Phase 2: Common name
  if (remaining.length > 0) {
    console.log("\n--- Phase 2: Common names (" + remaining.length + ") ---\n");
    remaining = await batchPhase(remaining, (p) => p.commonName, "common", raw);
  }

  // Phase 3: Search
  if (remaining.length > 0) {
    console.log("\n--- Phase 3: Search (" + remaining.length + ") ---\n");
    for (let i = 0; i < remaining.length; i++) {
      const pl = remaining[i];
      const q = clean(pl.scientificName) + " " + pl.commonName;
      console.log("  [" + (i + 1) + "/" + remaining.length + "] " + pl.commonName);
      const img = await searchOne(q);
      if (img) {
        await raw.execute({
          sql: "UPDATE plants SET image_url = ?, updated_at = datetime('now') WHERE id = ?",
          args: [img, pl.id],
        });
        found++;
        console.log("    OK");
      } else {
        console.log("    MISS");
      }
      await new Promise((r) => setTimeout(r, 500));
    }
  }

  raw.close();

  // Report
  const finalList = await db
    .select({
      id: plants.id,
      commonName: plants.commonName,
      imageUrl: plants.imageUrl,
    })
    .from(plants)
    .all();
  const w = finalList.filter((p) => p.imageUrl);
  const wo = finalList.filter((p) => !p.imageUrl);

  console.log("\n" + "=".repeat(50));
  console.log("FINAL: " + finalList.length + " plants");
  console.log("  With images: " + w.length);
  console.log("  Missing: " + wo.length);

  if (wo.length > 0) {
    const rp = resolve(__dirname, ".plant-image-review-needed.md");
    let report = "# Plant Images - Still Missing\n\n";
    report += "Generated: " + new Date().toISOString() + "\n\n";
    report += "## Missing (" + wo.length + ")\n\n";
    for (const p of wo) {
      report += "- " + p.commonName + " (" + p.id + ")\n";
    }
    writeFileSync(rp, report, "utf-8");
    console.log("Report: " + rp);
  } else {
    console.log("\nALL PLANTS HAVE IMAGES!");
  }

  closeDb();
}

main().catch((err: any) => {
  console.error("Error:", err);
  process.exit(1);
});