package main

import (
	"database/sql"
	"time"
)

// Database layer for persistent storage
type DatabaseConfig struct {
	Type     string            `json:"type"` // sqlite, mysql, postgres
	Host     string            `json:"host"`
	Port     int               `json:"port"`
	Database string            `json:"database"`
	Username string            `json:"username"`
	Password string            `json:"password"`
	Options  map[string]string `json:"options"`
}

type Database struct {
	db     *sql.DB
	config DatabaseConfig
}

// User account storage
type UserAccount struct {
	ID           int       `db:"id"`
	Nick         string    `db:"nick"`
	PasswordHash string    `db:"password_hash"`
	Email        string    `db:"email"`
	RegisterTime time.Time `db:"register_time"`
	LastSeen     time.Time `db:"last_seen"`
	Flags        []string  `db:"flags"`
}

// Channel registration
type RegisteredChannel struct {
	ID           int             `db:"id"`
	Name         string          `db:"name"`
	Founder      string          `db:"founder"`
	RegisterTime time.Time       `db:"register_time"`
	Topic        string          `db:"topic"`
	Modes        string          `db:"modes"`
	AccessList   []ChannelAccess `db:"-"`
}

type ChannelAccess struct {
	Nick  string `db:"nick"`
	Level int    `db:"level"` // 1=voice, 10=halfop, 50=op, 100=admin, 500=founder
}

// Persistent bans/quiets
type NetworkBan struct {
	ID       int       `db:"id"`
	Mask     string    `db:"mask"`
	Reason   string    `db:"reason"`
	SetBy    string    `db:"set_by"`
	SetTime  time.Time `db:"set_time"`
	Duration int       `db:"duration"` // 0 = permanent
	Type     string    `db:"type"`     // gline, kline, zline, qline
}

// Statistics tracking
type ServerStats struct {
	Date             time.Time `db:"date"`
	MaxUsers         int       `db:"max_users"`
	MaxChannels      int       `db:"max_channels"`
	TotalConnections int64     `db:"total_connections"`
	MessageCount     int64     `db:"message_count"`
	OperCount        int       `db:"oper_count"`
}

func NewDatabase(config DatabaseConfig) (*Database, error) {
	// Initialize database connection
	return &Database{config: config}, nil
}

func (db *Database) CreateTables() error {
	// Create all necessary tables
	return nil
}

func (db *Database) GetUserAccount(nick string) (*UserAccount, error) {
	// Retrieve user account
	return nil, nil
}

func (db *Database) SaveUserAccount(account *UserAccount) error {
	// Save user account
	return nil
}

func (db *Database) GetChannelAccess(channel string) ([]ChannelAccess, error) {
	// Get channel access list
	return nil, nil
}

func (db *Database) LogStatistics(stats ServerStats) error {
	// Log daily statistics
	return nil
}