import type { FastifyInstance } from 'fastify';
import { get, query } from '../db/index.js';

export async function itemRoutes(app: FastifyInstance): Promise<void> {
  app.get('/api/items/search', async (req) => {
    const { q = '' } = req.query as { q?: string };
    const queryStr = q.trim();
    if (!queryStr) return { results: [] };
    const results = await query(
      `SELECT unique_name, name_en, tier, enchantment, shop_category, shop_subcategory
       FROM items
       WHERE name_en ILIKE ? OR unique_name ILIKE ?
       ORDER BY tier, enchantment, unique_name
       LIMIT 50`,
      [`%${queryStr}%`, `%${queryStr}%`],
    );
    return { results };
  });

  app.get('/api/items/:uniqueName', async (req, reply) => {
    const { uniqueName } = req.params as { uniqueName: string };
    const item = await get('SELECT * FROM items WHERE unique_name = ?', [uniqueName]);
    if (!item) return reply.code(404).send({ error: 'item not found' });

    const recipes = (await query('SELECT * FROM recipes WHERE output_item = ? ORDER BY source, variant', [uniqueName])) as any[];
    for (const r of recipes) {
      r.inputs = await query(
        `SELECT ri.input_item, ri.count, ri.max_return_amount, i.name_en
         FROM recipe_inputs ri LEFT JOIN items i ON i.unique_name = ri.input_item
         WHERE ri.recipe_id = ?`,
        [r.id],
      );
    }

    const usedIn = await query(
      `SELECT DISTINCT r.output_item, i.name_en
       FROM recipe_inputs ri
       JOIN recipes r ON r.id = ri.recipe_id
       LEFT JOIN items i ON i.unique_name = r.output_item
       WHERE ri.input_item = ?
       LIMIT 100`,
      [uniqueName],
    );

    return { item, recipes, usedIn };
  });
}