### Create and Initialize F-Chat Client with Custom Listener

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Use ClientBuilder to configure and initialize an F-Chat client with a custom event listener. This example demonstrates setting client identification and authenticating with F-List servers.

```rust
use f_chat_rs::client::{ClientBuilder, EventListener, async_trait};
use f_chat_rs::session::Session;
use f_chat_rs::data::Character;
use std::sync::Arc;

// Define a custom event listener
struct MyEventListener;

#[async_trait]
impl EventListener for MyEventListener {
    async fn ready(&self, ctx: Arc<Session>) {
        println!("Session ready for character: {:?}", ctx.character);
    }

    async fn message(
        &self,
        ctx: Arc<Session>,
        channel: f_chat_rs::data::MessageChannel,
        character: f_chat_rs::data::Character,
        message: f_chat_rs::data::MessageContent,
    ) {
        println!("Message from {:?}: {:?}", character, message);
    }
}

#[tokio::main] 
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Create a client with custom event listener
    let (client, receiver) = ClientBuilder::new(MyEventListener)
        .with_version("MyApp".to_string(), "1.0.0".to_string())
        .init("your_username".to_string(), "your_password".to_string())
        .await?;

    // Characters available after authentication
    println!("Available characters: {:?}", client.own_characters);

    // Start the event loop in a separate task
    tokio::spawn(async move {
        client.start(receiver).await;
    });

    Ok(())
}
```

--------------------------------

### Get API Ticket with Extra Data

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Authenticates with F-List to obtain an API ticket. Set the `include_extra_data` flag to true to also retrieve the character list, friends, and bookmarks.

```rust
use f_chat_rs::http_endpoints::get_api_ticket;
use reqwest::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let http_client = Client::new();

    // Get ticket with extra data (characters, friends, bookmarks)
    let response = get_api_ticket(
        &http_client,
        "your_username",
        "your_password",
        true  // Include extra data
    ).await?;

    println!("API Ticket: {}", response.ticket);

    if let Some(extra) = response.extra {
        println!("Your characters:");
        for (character, id) in &extra.characters {
            println!("  - {:?} (ID: {:?})", character, id);
        }

        println!("Friends: {:?}", extra.friends.len());
        println!("Bookmarks: {:?}", extra.bookmarks.len());
    }

    Ok(())
}
```

--------------------------------

### Get Character Profile Data

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Retrieves detailed profile information for a specified character using an API ticket obtained from `get_api_ticket`. This includes kinks, images, custom fields, and settings.

```rust
use f_chat_rs::http_endpoints::{get_character_profile_data, get_api_ticket};
use f_chat_rs::data::Character;
use f_chat_rs::util::StackString;
use reqwest::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let http = Client::new();

    // First authenticate
    let auth = get_api_ticket(&http, "username", "password", false).await?;

    // Fetch character profile
    let character = Character(StackString::new("SomeCharacter"));
    let profile = get_character_profile_data(
        &http,
        &auth.ticket,
        "username",
        character
    ).await?;

    println!("Character: {}", profile.inner.name);
    println!("Description: {}", profile.inner.description);
    println!("Views: {}", profile.inner.views);
    println!("Images: {}", profile.inner.images.len());
    println!("Custom kinks: {}", profile.inner.custom_kinks.len());

    // Check for API errors
    if !profile.error.is_empty() {
        eprintln!("API Error: {}", profile.error);
    }

    Ok(())
}
```

--------------------------------

### Constructing and Parsing F-Chat Protocol Commands

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Demonstrates how to create client-side commands, serialize them for transmission, and parse incoming server messages using the protocol module.

```rust
use f_chat_rs::protocol::{
    ClientCommand, ServerCommand, Target, IdentifyMethod,
    parse_command, prepare_command
};
use f_chat_rs::data::{Channel, Character, Status, TypingStatus};
use f_chat_rs::util::StackString;

fn protocol_examples() {
    // Client commands (sent to server)
    let join = ClientCommand::JoinChannel {
        channel: Channel(StackString::new("Fantasy"))
    };

    let message = ClientCommand::Message {
        channel: Channel(StackString::new("Fantasy")),
        message: "Hello world!".to_string()
    };

    let pm = ClientCommand::PrivateMessage {
        recipient: Character(StackString::new("Friend")),
        message: "Hey there!".to_string()
    };

    let status = ClientCommand::Status {
        status: Status::Looking,
        statusmsg: "Open for RP!".to_string()
    };

    let typing = ClientCommand::Typing {
        character: Character(StackString::new("Friend")),
        status: TypingStatus::Typing
    };

    // Serialize command for sending
    let wire_format = prepare_command(&join);
    println!("Wire format: {}", wire_format);
    // Output: JCH {"channel":"Fantasy"}

    // Parse incoming server message
    let raw_message = r#"MSG {"character":"SomeUser","message":"Hello!","channel":"Fantasy"}"#;
    let parsed = parse_command(raw_message);

    match parsed {
        ServerCommand::Message { character, message, channel } => {
            println!("Message in {:?} from {:?}: {}", channel, character, message);
        }
        ServerCommand::PrivateMessage { character, message } => {
            println!("PM from {:?}: {}", character, message);
        }
        ServerCommand::Error { number, message } => {
            println!("Error {}: {}", number, message);
        }
        _ => {}
    }
}
```

--------------------------------

### Initialize F-Chat Data Types in Rust

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Demonstrates instantiation of core data structures including characters, channels, statuses, and profile attributes using stack-allocated strings.

```rust
use f_chat_rs::data::{
    Character, Channel, Status, Gender, Orientation,
    FurryPreference, Role, ChannelMode, TypingStatus,
    MessageChannel, MessageContent, FriendRelation
};
use f_chat_rs::util::StackString;

fn data_type_examples() {
    // Characters and Channels use stack-allocated strings for efficiency
    let character = Character(StackString::new("MyCharacter"));
    let channel = Channel(StackString::new("ADH-abc123"));

    // Status options
    let statuses = [
        Status::Online,
        Status::Looking,  // Looking for RP
        Status::Busy,
        Status::Dnd,      // Do Not Disturb
        Status::Away,
        Status::Idle,
    ];

    // Character profile attributes
    let genders = [Gender::Male, Gender::Female, Gender::Herm, Gender::None];
    let orientations = [Orientation::Straight, Orientation::Gay, Orientation::Bisexual];
    let furry_prefs = [FurryPreference::Both, FurryPreference::FurryOnly, FurryPreference::HumanOnly];
    let roles = [Role::Switch, Role::AlwaysDom, Role::AlwaysSub];

    // Channel modes control what can be posted
    let modes = [
        ChannelMode::Both,      // Chat and ads allowed
        ChannelMode::ChatOnly,  // Only chat messages
        ChannelMode::AdsOnly,   // Only LFRP ads
    ];

    // Typing indicators for PMs
    let typing_states = [
        TypingStatus::Clear,   // Not typing
        TypingStatus::Typing,  // Currently typing
        TypingStatus::Paused,  // Started but paused
    ];

    // Message channels unify channel and PM contexts
    let channel_msg = MessageChannel::Channel(channel);
    let pm_msg = MessageChannel::PrivateMessage(
        Character(StackString::new("Me")),
        Character(StackString::new("Them"))
    );

    // Friend relationships track both sides
    let friendship = FriendRelation {
        own_character: Character(StackString::new("MyChar")),
        other_character: Character(StackString::new("TheirChar")),
    };
}
```

--------------------------------

### Manage Friends and Bookmarks via HTTP API

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Demonstrates using the HTTP endpoints to list friends, manage bookmarks, and handle friend requests using the reqwest client.

```rust
use f_chat_rs::http_endpoints::{
    get_friends_list, add_bookmark, remove_bookmark,
    send_friend_request, accept_friend_request, remove_friend
};
use f_chat_rs::data::Character;
use f_chat_rs::util::StackString;
use reqwest::Client;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let http = Client::new();
    let ticket = "your_api_ticket";
    let account = "your_username";

    // Get full friends list including pending requests
    let friends = get_friends_list(&http, ticket, account).await?;

    println!("Friends: {}", friends.inner.friends.len());
    for friend in &friends.inner.friends {
        println!("  {:?} <-> {:?}", friend.source, friend.dest);
    }

    println!("Bookmarks: {:?}", friends.inner.bookmarks);
    println!("Pending incoming: {}", friends.inner.pending_incoming.len());
    println!("Pending outgoing: {}", friends.inner.pending_outgoing.len());

    // Add a bookmark
    let character = Character(StackString::new("FavoriteCharacter"));
    add_bookmark(&http, ticket, account, character).await?;

    // Send a friend request
    let my_char = Character(StackString::new("MyCharacter"));
    let their_char = Character(StackString::new("TheirCharacter"));
    let request = send_friend_request(&http, ticket, account, my_char, their_char).await?;
    println!("Request ID: {}", request.inner.request.id);

    // Accept an incoming friend request
    accept_friend_request(&http, ticket, account, 12345).await?;

    Ok(())
}
```

--------------------------------

### Establish WebSocket Session with F-Chat

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Use the `connect` method on an initialized client to establish a WebSocket session for a specific character. The client handles API ticket refresh automatically.

```rust
use f_chat_rs::client::{Client, ClientBuilder, EventListener, async_trait};
use f_chat_rs::data::Character;
use f_chat_rs::util::StackString;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    struct MyListener;

    #[async_trait]
    impl EventListener for MyListener {
        async fn ready(&self, ctx: std::sync::Arc<f_chat_rs::session::Session>) {
            println!("Connected as: {:?}", ctx.character);
        }
    }

    let (client, receiver) = ClientBuilder::new(MyListener)
        .init("username".to_string(), "password".to_string())
        .await?;

    // Connect with a specific character
    let character = Character(StackString::new("MyCharacterName"));
    client.connect(character).await?;

    // Start event processing
    client.start(receiver).await;

    Ok(())
}
```

--------------------------------

### Implement Custom Cache Trait

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Shows how to implement the Cache trait for custom storage backends, using an in-memory HashMap protected by RwLock.

```rust
use f_chat_rs::cache::{Cache, PartialChannelData, PartialUserData, NoCacheError};
use f_chat_rs::data::{
    Channel, Character, ChannelData, CharacterData, FriendRelation,
    Message, MessageChannel
};
use f_chat_rs::util::timestamp::Timestamp;
use std::borrow::Cow;
use std::collections::HashMap;
use std::sync::RwLock;

// Example in-memory cache implementation
struct MemoryCache {
    characters: RwLock<HashMap<Character, CharacterData>>,
    channels: RwLock<HashMap<Channel, ChannelData>>,
    messages: RwLock<Vec<Message>>,
}

impl Cache for MemoryCache {
    type Error = NoCacheError;

    fn update_character(
        &self,
        character: Cow<Character>,
        data: PartialUserData,
    ) -> Result<bool, Self::Error> {
        let mut chars = self.characters.write().unwrap();
        let entry = chars.entry(*character).or_default();

        let mut changed = false;
        if let Some(status) = data.status {
            if entry.status != status {
                entry.status = status;
                changed = true;
            }
        }
        if let Some(gender) = data.gender {
            if entry.gender != gender {
                entry.gender = gender;
                changed = true;
            }
        }

        Ok(changed)  // Return true if data changed (triggers event)
    }

    fn get_character(&self, character: &Character) -> Result<Option<CharacterData>, Self::Error> {
        Ok(self.characters.read().unwrap().get(character).cloned())
    }

    // Implement remaining trait methods...
    fn insert_message(&self, _source: MessageChannel, message: Message) -> Result<bool, Self::Error> {
        self.messages.write().unwrap().push(message);
        Ok(true)
    }

    // ... other required methods
}
```

--------------------------------

### Post Roleplay Advertisements

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Posts an LFRP advertisement to a channel. Be aware of server-enforced cooldowns and character limits.

```rust
use f_chat_rs::session::Session;
use f_chat_rs::data::Channel;
use f_chat_rs::util::StackString;
use std::sync::Arc;

async fn post_advertisement(session: Arc<Session>) -> Result<(), Box<dyn std::error::Error>> {
    let channel = Channel(StackString::new("Fantasy"));

    let ad_text = r#"[b]Looking for adventure partners![/b]

Experienced knight seeking companions for dungeon exploration.
[i]Long-term RP preferred. PM friendly![/i]"#;

    session.send_ad(channel, ad_text.to_string()).await?;

    // Check ad cooldown from session variables
    println!("Ad cooldown: {} seconds", session.variables.ad_cooldown);
    println!("Max ad length: {} chars", session.variables.ad_max);

    Ok(())
}
```

--------------------------------

### Join Chat Channels

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Sends a request to join official or private channels. Private channels must be prefixed with 'ADH-'.

```rust
use f_chat_rs::session::Session;
use f_chat_rs::data::Channel;
use f_chat_rs::util::StackString;
use std::sync::Arc;

async fn join_channels(session: Arc<Session>) -> Result<(), Box<dyn std::error::Error>> {
    // Join an official channel
    let official = Channel(StackString::new("Fantasy"));
    session.join_channel(official).await?;

    // Join an unofficial/private channel
    let unofficial = Channel(StackString::new("ADH-731af796f59d06bec167"));
    session.join_channel(unofficial).await?;

    Ok(())
}
```

--------------------------------

### Handling F-Chat Protocol Errors

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Shows how to convert raw error codes into ProtocolError enums and differentiate between fatal and non-fatal error states.

```rust
use f_chat_rs::protocol::ProtocolError;

fn handle_error(error_code: i32, message: String) {
    let error: ProtocolError = error_code.into();

    // Check if error is fatal (should not reconnect)
    if error.is_fatal() {
        match error {
            ProtocolError::Banned => {
                eprintln!("Account is banned from the server");
            }
            ProtocolError::TooManySessions => {
                eprintln!("Too many concurrent connections");
            }
            ProtocolError::Kick => {
                eprintln!("Kicked from server: {}", message);
            }
            ProtocolError::TimeOut => {
                eprintln!("Timed out: {}", message);
            }
            _ => eprintln!("Fatal error: {:?}", error)
        }
        return;
    }

    // Handle non-fatal errors
    match error {
        ProtocolError::MessageCooldown => {
            println!("Sending messages too fast, waiting...");
        }
        ProtocolError::MessageTooLong => {
            println!("Message exceeds maximum length");
        }
        ProtocolError::AlreadyInChannel => {
            println!("Already in this channel");
        }
        ProtocolError::NoSuchChannel => {
            println!("Channel does not exist");
        }
        ProtocolError::ChannelBanned => {
            println!("Banned from this channel");
        }
        ProtocolError::Ignored => {
            // This error includes who is ignoring you
            println!("Being ignored: {}", message);
        }
        _ => {
            if error.has_message() {
                println!("Error {:?}: {}", error, message);
            } else {
                println!("Error: {:?}", error);
            }
        }
    }
}
```

--------------------------------

### Send Messages to Channels or Characters

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Utilize the `send_message` method on a `Session` to send text messages. This can be directed to a specific channel or a private message to another character.

```rust
use f_chat_rs::session::Session;
use f_chat_rs::protocol::Target;
use f_chat_rs::data::{Channel, Character};
use f_chat_rs::util::StackString;
use std::sync::Arc;

async fn send_messages(session: Arc<Session>) -> Result<(), Box<dyn std::error::Error>> {
    // Send a message to a channel
    let channel = Channel(StackString::new("ADH-abc123def456"));
    session.send_message(
        Target::Channel { channel },
        "Hello, channel!".to_string()
    ).await?;

    // Send a private message to a character
    let recipient = Character(StackString::new("SomeCharacter"));
    session.send_message(
        Target::Character { recipient },
        "Hello, friend!".to_string()
    ).await?;

    Ok(())
}
```

--------------------------------

### Implement EventListener Trait

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Implement the EventListener trait to handle various F-Chat events asynchronously. All methods have default no-op implementations, so you only need to override the ones you require.

```rust
use f_chat_rs::client::{EventListener, async_trait};
use f_chat_rs::session::{Session, SessionError};
use f_chat_rs::protocol::{ServerCommand, ProtocolError};
use f_chat_rs::data::{Channel, Character, MessageChannel, MessageContent, TypingStatus};
use std::sync::Arc;

struct ChatBot;

#[async_trait]
impl EventListener for ChatBot {
    // Called when session is fully connected and ready
    async fn ready(&self, ctx: Arc<Session>) {
        println!("Bot connected as: {:?}", ctx.character);
    }

    // Called for every incoming message (channel or PM)
    async fn message(
        &self,
        ctx: Arc<Session>,
        channel: MessageChannel,
        character: Character,
        message: MessageContent,
    ) {
        match message {
            MessageContent::Message(text) => {
                println!("[{:?}] {:?}: {}", channel, character, text);
            }
            MessageContent::Roll(dice, results, total) => {
                println!("{:?} rolled {:?} = {}", character, dice, total);
            }
            _ => {}
        }
    }

    // Called when someone starts/stops typing in PM
    async fn typing(&self, ctx: Arc<Session>, character: Character, status: TypingStatus) {
        match status {
            TypingStatus::Typing => println!("{:?} is typing...", character),
            TypingStatus::Paused => println!("{:?} paused typing", character),
            TypingStatus::Clear => println!("{:?} stopped typing", character),
        }
    }

    // Called when channel data is updated
    async fn updated_channel(&self, channel: Channel) {
        println!("Channel updated: {:?}", channel);
    }

    // Called on protocol errors
    async fn error(&self, ctx: Arc<Session>, err: ProtocolError, message: String) {
        if err.is_fatal() {
            eprintln!("Fatal error: {:?} - {}", err, message);
        } else {
            eprintln!("Error: {:?} - {}", err, message);
        }
    }

    // Called when session disconnects
    async fn session_disconnected(&self, ctx: Arc<Session>, error: ProtocolError) {
        eprintln!("Disconnected: {:?}", error);
    }
}
```

--------------------------------

### Roll Dice

Source: https://context7.com/feathrs/f-chat-rs/llms.txt

Sends dice roll commands to channels or private messages using standard dice notation.

```rust
use f_chat_rs::session::Session;
use f_chat_rs::protocol::Target;
use f_chat_rs::data::{Channel, Character};
use f_chat_rs::util::StackString;
use std::sync::Arc;

async fn roll_dice(session: Arc<Session>) -> Result<(), Box<dyn std::error::Error>> {
    // Roll dice in a channel
    let channel = Channel(StackString::new("Tabletop Gaming"));
    session.send_dice(
        Target::Channel { channel },
        "1d20+5".to_string()  // Roll a d20 with +5 modifier
    ).await?;

    // Roll dice in a private message
    let recipient = Character(StackString::new("DungeonMaster"));
    session.send_dice(
        Target::Character { recipient },
        "4d6".to_string()  // Roll 4d6
    ).await?;

    Ok(())
}
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.