price_api/api.ts

import { Application, Router } from 'https://deno.land/x/oak/mod.ts';
import { Client } from "https://deno.land/x/postgres@v0.17.0/mod.ts";
import { load } from "https://deno.land/std/dotenv/mod.ts";

const app = new Application();
const router = new Router();

const env = await load();
const hostname = env["HOSTNAME"];
const port     = env["PORT"];
const user     = env["USER"];
const password = env["PASSWORD"];
const database = env["DATABASE"];
const app_port = env["APP_PORT"];

// Configure database connection
const client = new Client({
  hostname:hostname 
  ,port:    port     
  ,user:    user     
  ,password:password 
  ,database:database 
});

await client.connect();

// Load SQL from file
const query = await Deno.readTextFile("sql/hist.sql");

// Define a route to retrieve values from the database using parameters
router.get('/price_info/part_cust/:partcode/:customer', async (ctx) => {

    const partcode = ctx.params.partcode; // Extract the partcode parameter from the route
    const customer = ctx.params.customer; // Extract the customer parameter from the route

    //console.log(partcode)
    //console.log(customer)

    const result = await client.queryObject({args: [partcode, customer], text: query} );

    for (const row of result.rows) {
      if (typeof row.season === 'object' && row.season !== null) {
        for (const year in row.season) {
          console.log(`${year}: ` + row.season[year].price_usd)
        }
      }
    }
});

app.use(router.routes());
app.use(router.allowedMethods());

// Start the server
console.log('Server is running on http://localhost:8085');
await app.listen({ port: 8085 });