package db

import (
	"context"
	"fmt"
	"log/slog"
	"time"

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

type DB struct {
	Pool *pgxpool.Pool
}

func New(ctx context.Context, databaseURL string) (*DB, error) {
	cfg, err := pgxpool.ParseConfig(databaseURL)
	if err != nil {
		return nil, fmt.Errorf("parse database url: %w", err)
	}

	cfg.MaxConns = 20
	cfg.MinConns = 2
	cfg.MaxConnLifetime = 30 * time.Minute
	cfg.MaxConnIdleTime = 5 * time.Minute

	pool, err := pgxpool.NewWithConfig(ctx, cfg)
	if err != nil {
		return nil, fmt.Errorf("connect to database: %w", err)
	}

	if err := pool.Ping(ctx); err != nil {
		pool.Close()
		return nil, fmt.Errorf("ping database: %w", err)
	}

	slog.Info("database connected", "url", redactURL(databaseURL))

	db := &DB{Pool: pool}
	if err := db.migrate(ctx); err != nil {
		pool.Close()
		return nil, fmt.Errorf("run migrations: %w", err)
	}

	return db, nil
}

func (d *DB) Close() {
	d.Pool.Close()
}

func (d *DB) HealthCheck(ctx context.Context) error {
	return d.Pool.Ping(ctx)
}

func redactURL(url string) string {
	// Hide password from logs
	if idx := len(url); idx > 30 {
		return url[:30] + "..."
	}
	return url
}