// package database manages PostgreSQL connections and data models.
package database

import (
	"context"
	"fmt"

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

// DB wraps pgxpool.Pool with application-specific helpers.
type DB struct {
	pool *pgxpool.Pool
}

// Open creates a new database connection pool.
func Open(ctx context.Context, databaseURL string) (*DB, error) {
	pool, err := pgxpool.New(ctx, databaseURL)
	if err != nil {
		return nil, fmt.Errorf("connecting to database: %w", err)
	}
	if err := pool.Ping(ctx); err != nil {
		pool.Close()
		return nil, fmt.Errorf("pinging database: %w", err)
	}
	return &DB{pool: pool}, nil
}

// Close shuts down the connection pool.
func (db *DB) Close() {
	db.pool.Close()
}

// Pool returns the underlying pool for direct queries.
func (db *DB) Pool() *pgxpool.Pool {
	return db.pool
}

// ── Models ─────────────────────────────────────────────────────

// User represents a registered player.
type User struct {
	ID           int    `db:"id"`
	Username     string `db:"username"`
	Email        string `db:"email"`
	PasswordHash string `db:"password_hash"`
	UUID         string `db:"uuid"`
	Role         string `db:"role"`
}

// YggdrasilSession represents an active authentication session.
type YggdrasilSession struct {
	ClientToken string `db:"client_token"`
	AccessToken string `db:"access_token"`
	UserID      int    `db:"user_id"`
	ExpiresAt   string `db:"expires_at"`
}

// Modpack represents a game server / modpack configuration.
type Modpack struct {
	ID               int    `db:"id"`
	Slug             string `db:"slug"`
	Name             string `db:"name"`
	MinecraftVersion string `db:"minecraft_version"`
	JavaVersion      int    `db:"java_version"`
	ServerIP         string `db:"server_ip"`
	IsActive         bool   `db:"is_active"`
}

// GlobalFile is a CAS entry.
type GlobalFile struct {
	SHA1     string `db:"sha1"`
	Size     int64  `db:"size_bytes"`
	FileName string `db:"file_name"`
}

// LauncherRelease tracks published launcher binaries.
type LauncherRelease struct {
	ID         int    `db:"id"`
	Version    string `db:"version"`
	OS         string `db:"os"`
	Arch       string `db:"arch"`
	SHA256     string `db:"sha256"`
	FilePath   string `db:"file_path"`
	IsActive   bool   `db:"is_active"`
	IsMandatory bool  `db:"is_mandatory"`
}