270 lines
7.6 KiB
Go
270 lines
7.6 KiB
Go
package chat
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import (
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"context"
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"fmt"
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"zombiezen.com/go/sqlite"
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"zombiezen.com/go/sqlite/sqlitex"
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)
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// DatabaseChannelManager implements ChannelDatabase interface using sqlitex.Pool
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type DatabaseChannelManager struct {
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pool *sqlitex.Pool
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}
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// NewDatabaseChannelManager creates a new database channel manager using sqlitex.Pool
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func NewDatabaseChannelManager(pool *sqlitex.Pool) *DatabaseChannelManager {
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return &DatabaseChannelManager{
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pool: pool,
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}
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}
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// LoadWorldChannels retrieves all persistent world channels from database
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func (dcm *DatabaseChannelManager) LoadWorldChannels(ctx context.Context) ([]ChatChannelData, error) {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return nil, fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "SELECT `name`, `password`, `level_restriction`, `classes`, `races` FROM `channels`"
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var channels []ChatChannelData
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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ResultFunc: func(stmt *sqlite.Stmt) error {
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var channel ChatChannelData
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channel.Name = stmt.ColumnText(0)
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if stmt.ColumnType(1) != sqlite.TypeNull {
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channel.Password = stmt.ColumnText(1)
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}
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channel.LevelRestriction = int32(stmt.ColumnInt64(2))
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channel.ClassRestriction = int32(stmt.ColumnInt64(3))
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channel.RaceRestriction = int32(stmt.ColumnInt64(4))
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channels = append(channels, channel)
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return nil
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},
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})
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if err != nil {
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return nil, fmt.Errorf("failed to query channels: %w", err)
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}
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return channels, nil
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}
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// SaveChannel persists a channel to database (world channels only)
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func (dcm *DatabaseChannelManager) SaveChannel(ctx context.Context, channel ChatChannelData) error {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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// Insert or update channel
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query := `
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INSERT OR REPLACE INTO channels
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(name, password, level_restriction, classes, races)
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VALUES (?, ?, ?, ?, ?)`
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var password any
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if channel.Password != "" {
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password = channel.Password
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}
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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Args: []any{
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channel.Name,
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password,
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channel.LevelRestriction,
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channel.ClassRestriction,
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channel.RaceRestriction,
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},
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})
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if err != nil {
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return fmt.Errorf("failed to save channel %s: %w", channel.Name, err)
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}
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return nil
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}
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// DeleteChannel removes a channel from database
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func (dcm *DatabaseChannelManager) DeleteChannel(ctx context.Context, channelName string) error {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "DELETE FROM channels WHERE name = ?"
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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Args: []any{channelName},
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})
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if err != nil {
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return fmt.Errorf("failed to delete channel %s: %w", channelName, err)
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}
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return nil
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}
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// EnsureChannelsTable creates the channels table if it doesn't exist
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func (dcm *DatabaseChannelManager) EnsureChannelsTable(ctx context.Context) error {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := `
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CREATE TABLE IF NOT EXISTS channels (
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name TEXT PRIMARY KEY,
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password TEXT,
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level_restriction INTEGER NOT NULL DEFAULT 0,
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classes INTEGER NOT NULL DEFAULT 0,
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races INTEGER NOT NULL DEFAULT 0,
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created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
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updated_at DATETIME DEFAULT CURRENT_TIMESTAMP
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)`
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err = sqlitex.Execute(conn, query, nil)
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if err != nil {
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return fmt.Errorf("failed to create channels table: %w", err)
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}
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return nil
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}
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// GetChannelCount returns the total number of channels in the database
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func (dcm *DatabaseChannelManager) GetChannelCount(ctx context.Context) (int, error) {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return 0, fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "SELECT COUNT(*) FROM channels"
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var count int
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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ResultFunc: func(stmt *sqlite.Stmt) error {
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count = int(stmt.ColumnInt64(0))
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return nil
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},
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})
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if err != nil {
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return 0, fmt.Errorf("failed to query channel count: %w", err)
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}
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return count, nil
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}
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// GetChannelByName retrieves a specific channel by name
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func (dcm *DatabaseChannelManager) GetChannelByName(ctx context.Context, channelName string) (*ChatChannelData, error) {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return nil, fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "SELECT `name`, `password`, `level_restriction`, `classes`, `races` FROM `channels` WHERE `name` = ?"
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var channel *ChatChannelData
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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Args: []any{channelName},
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ResultFunc: func(stmt *sqlite.Stmt) error {
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channel = &ChatChannelData{}
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channel.Name = stmt.ColumnText(0)
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if stmt.ColumnType(1) != sqlite.TypeNull {
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channel.Password = stmt.ColumnText(1)
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}
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channel.LevelRestriction = int32(stmt.ColumnInt64(2))
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channel.ClassRestriction = int32(stmt.ColumnInt64(3))
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channel.RaceRestriction = int32(stmt.ColumnInt64(4))
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return nil
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},
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})
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if err != nil {
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return nil, fmt.Errorf("failed to query channel %s: %w", channelName, err)
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}
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if channel == nil {
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return nil, fmt.Errorf("channel %s not found", channelName)
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}
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return channel, nil
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}
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// ListChannelNames returns a list of all channel names in the database
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func (dcm *DatabaseChannelManager) ListChannelNames(ctx context.Context) ([]string, error) {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return nil, fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "SELECT name FROM channels ORDER BY name"
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var names []string
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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ResultFunc: func(stmt *sqlite.Stmt) error {
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name := stmt.ColumnText(0)
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names = append(names, name)
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return nil
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},
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})
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if err != nil {
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return nil, fmt.Errorf("failed to query channel names: %w", err)
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}
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return names, nil
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}
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// UpdateChannelPassword updates just the password for a channel
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func (dcm *DatabaseChannelManager) UpdateChannelPassword(ctx context.Context, channelName, password string) error {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "UPDATE channels SET password = ?, updated_at = CURRENT_TIMESTAMP WHERE name = ?"
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var passwordParam any
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if password != "" {
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passwordParam = password
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}
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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Args: []any{passwordParam, channelName},
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})
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if err != nil {
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return fmt.Errorf("failed to update password for channel %s: %w", channelName, err)
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}
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return nil
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}
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// UpdateChannelRestrictions updates the level, race, and class restrictions for a channel
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func (dcm *DatabaseChannelManager) UpdateChannelRestrictions(ctx context.Context, channelName string, levelRestriction, classRestriction, raceRestriction int32) error {
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conn, err := dcm.pool.Take(context.Background())
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if err != nil {
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return fmt.Errorf("failed to get connection: %w", err)
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}
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defer dcm.pool.Put(conn)
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query := "UPDATE channels SET level_restriction = ?, classes = ?, races = ?, updated_at = CURRENT_TIMESTAMP WHERE name = ?"
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err = sqlitex.Execute(conn, query, &sqlitex.ExecOptions{
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Args: []any{levelRestriction, classRestriction, raceRestriction, channelName},
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})
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if err != nil {
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return fmt.Errorf("failed to update restrictions for channel %s: %w", channelName, err)
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}
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return nil
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} |