package chat

import "context"

// ChannelDatabase defines database operations for chat channels
type ChannelDatabase interface {
	// LoadWorldChannels retrieves all persistent world channels from database
	LoadWorldChannels(ctx context.Context) ([]ChatChannelData, error)
	
	// SaveChannel persists a channel to database (world channels only)
	SaveChannel(ctx context.Context, channel ChatChannelData) error
	
	// DeleteChannel removes a channel from database
	DeleteChannel(ctx context.Context, channelName string) error
}

// ClientManager handles client communication for chat system
type ClientManager interface {
	// SendChannelList sends available channels to a client
	SendChannelList(characterID int32, channels []ChannelInfo) error
	
	// SendChannelMessage delivers a message to a client
	SendChannelMessage(characterID int32, message ChannelMessage) error
	
	// SendChannelUpdate notifies client of channel membership changes
	SendChannelUpdate(characterID int32, channelName string, action int, characterName string) error
	
	// SendChannelUserList sends who list to client
	SendChannelUserList(characterID int32, channelName string, members []ChannelMember) error
	
	// IsClientConnected checks if a character is currently online
	IsClientConnected(characterID int32) bool
}

// PlayerManager provides player information for chat system
type PlayerManager interface {
	// GetPlayerInfo retrieves basic player information
	GetPlayerInfo(characterID int32) (PlayerInfo, error)
	
	// ValidatePlayer checks if player meets channel requirements
	ValidatePlayer(characterID int32, levelReq, raceReq, classReq int32) bool
	
	// GetPlayerLanguages returns languages known by player
	GetPlayerLanguages(characterID int32) ([]int32, error)
}

// LanguageProcessor handles multilingual chat processing
type LanguageProcessor interface {
	// ProcessMessage processes a message for language comprehension
	ProcessMessage(senderID, receiverID int32, message string, languageID int32) (string, error)
	
	// CanUnderstand checks if receiver can understand sender's language
	CanUnderstand(senderID, receiverID int32, languageID int32) bool
	
	// GetDefaultLanguage returns the default language for a character
	GetDefaultLanguage(characterID int32) int32
}

// PlayerInfo contains basic player information needed for chat
type PlayerInfo struct {
	CharacterID   int32
	CharacterName string
	Level         int32
	Race          int32
	Class         int32
	IsOnline      bool
}

// ChatAware interface for entities that can participate in chat
type ChatAware interface {
	GetCharacterID() int32
	GetCharacterName() string
	GetLevel() int32
	GetRace() int32
	GetClass() int32
}

// EntityChatAdapter adapts entities to work with chat system
type EntityChatAdapter struct {
	entity interface {
		GetID() int32
		// Add other entity methods as needed
	}
	playerManager PlayerManager
}

// GetCharacterID returns the character ID from the adapted entity
func (a *EntityChatAdapter) GetCharacterID() int32 {
	return a.entity.GetID()
}

// GetCharacterName returns the character name from player manager
func (a *EntityChatAdapter) GetCharacterName() string {
	if info, err := a.playerManager.GetPlayerInfo(a.entity.GetID()); err == nil {
		return info.CharacterName
	}
	return ""
}

// GetLevel returns the character level from player manager
func (a *EntityChatAdapter) GetLevel() int32 {
	if info, err := a.playerManager.GetPlayerInfo(a.entity.GetID()); err == nil {
		return info.Level
	}
	return 0
}

// GetRace returns the character race from player manager
func (a *EntityChatAdapter) GetRace() int32 {
	if info, err := a.playerManager.GetPlayerInfo(a.entity.GetID()); err == nil {
		return info.Race
	}
	return 0
}

// GetClass returns the character class from player manager
func (a *EntityChatAdapter) GetClass() int32 {
	if info, err := a.playerManager.GetPlayerInfo(a.entity.GetID()); err == nil {
		return info.Class
	}
	return 0
}