// cmd/hammyd/main.go
package main

import (
    "context"
    "log"
    "os"

    "github.com/jackc/pgx/v5/pgxpool"
)

func main() {
    ctx := context.Background()

    dsn := os.Getenv("HAMMY_DSN")
    if dsn == "" {
        log.Fatal("HAMMY_DSN is not set!")
    }

    pool, err := pgxpool.New(ctx, dsn)
    if err != nil {
        log.Fatalf("connect: %v", err)
    }
    defer pool.Close()

    if err := pool.Ping(ctx); err != nil {
        log.Fatalf("ping: %v", err)
    }

    var n int
    err = pool.QueryRow(ctx, "SELECT count(*) FROM core.users").Scan(&n)
    if err != nil {
        log.Fatalf("query: %v", err)
    }

    log.Printf("connected, %d users", n)
}