netget-tool 0.3.4

//! Event type definitions

use bytes::Bytes;
use std::collections::HashMap;

use crate::state::app_state::{EventHandlerMode, WebSearchMode};

/// HTTP response to be sent back to the client
#[derive(Debug, Clone)]
pub struct HttpResponse {
    pub status: u16,
    pub headers: HashMap<String, String>,
    pub body: Bytes,
}

/// Main application event enum
#[derive(Debug)]
pub enum AppEvent {
    /// User command
    UserCommand(UserCommand),
    /// Tick/timeout event
    Tick,
    /// Shutdown signal
    Shutdown,
}

/// UDP response to be sent back
#[derive(Debug, Clone)]
pub struct UdpResponse {
    pub data: Vec<u8>,
}

/// User commands parsed from input
/// These are ONLY slash commands - all other input goes to LLM for interpretation
#[derive(Debug, Clone)]
pub enum UserCommand {
    /// Query current status (slash command: /status)
    Status,
    /// Show current model (slash command: /model)
    ShowModel,
    /// Change the Ollama model (slash command: /model <name>)
    ChangeModel { model: String },
    /// Show current log level (slash command: /log)
    ShowLogLevel,
    /// Change log level (slash command: /log <level>)
    ChangeLogLevel { level: String },
    /// Show current web search status (slash command: /web)
    ShowWebSearch,
    /// Set web search mode (slash command: /web on|off|ask)
    SetWebSearch { mode: WebSearchMode },
    /// Show current event handler mode (slash command: /handler)
    ShowEventHandler,
    /// Set event handler mode (slash command: /handler any|script|static|llm)
    SetEventHandler { mode: EventHandlerMode },
    /// Generate test output lines (slash command: /test <count>)
    TestOutput { count: usize },
    /// Test web search approval prompt (slash command: /test_ask)
    TestAsk,
    /// Set custom footer status message (slash command: /footer_status <message>)
    SetFooterStatus { message: Option<String> },
    /// Show protocol documentation (slash command: /docs [protocol])
    ShowDocs { protocol: Option<String> },
    /// Show environment information (slash command: /env or /environment)
    ShowEnvironment,
    /// Show usage statistics (slash command: /usage)
    ShowUsage,
    /// List registered protocols grouped by development state
    /// (slash command: /stability or /protocols)
    ShowStability,
    /// Stop everything - all servers, connections, and clients (slash command: /stop)
    StopAll,
    /// Stop a specific server, connection, or client by unified ID (slash command: /stop <id>)
    StopById { id: u32 },
    /// Save all servers/clients or a specific one by ID (slash command: /save <name> [id])
    Save { name: String, id: Option<u32> },
    /// Load servers/clients from a file (slash command: /load <name>)
    Load { name: String },
    /// SQLite database management (slash command: /sqlite [db_id] [query])
    #[cfg(feature = "sqlite")]
    Sqlite {
        db_id: Option<u32>,
        query: Option<String>,
    },
    /// Show current LLM backend info (slash command: /backend)
    ShowBackend,
    /// Switch LLM backend (slash command: /backend ollama [url] or /backend openai <url> [api-key])
    SetBackend { args: String },
    /// List available simple protocols (slash command: /simple)
    ListSimple,
    /// Start a simple protocol server (slash command: /simple <protocol>)
    StartSimple { protocol: String },
    /// List running servers and clients and show the create/update command shape
    /// (slash command: /manage)
    Manage,
    /// Update a running server or client's instruction by unified id
    /// (slash command: /update <id> <instruction text>)
    Update { id: u32, instruction: String },
    /// Quit the application (slash command: /quit)
    Quit,
    /// Unknown slash command (error case)
    UnknownSlashCommand { command: String },
    /// Regular user input (not a slash command) - send to LLM for interpretation
    Interpret { input: String },
}

impl UserCommand {
    /// Parse a user input string into a command
    /// Only handles slash commands - everything else goes to LLM for interpretation
    pub fn parse(input: &str) -> Self {
        let trimmed = input.trim();

        // Check if it's a slash command
        if !trimmed.starts_with('/') {
            // Not a slash command - send to LLM for interpretation
            return UserCommand::Interpret {
                input: trimmed.to_string(),
            };
        }

        // Parse slash commands
        let input_lower = trimmed.to_lowercase();

        if input_lower == "/status" || input_lower == "/?" {
            return UserCommand::Status;
        }

        if input_lower == "/quit" || input_lower == "/exit" || input_lower == "/q" {
            return UserCommand::Quit;
        }

        // /model command
        if input_lower.starts_with("/model") {
            let rest = trimmed[6..].trim();
            if rest.is_empty() {
                // Show current model
                return UserCommand::ShowModel;
            }
            return UserCommand::ChangeModel {
                model: rest.to_string(),
            };
        }

        // /log command
        if input_lower.starts_with("/log") {
            let rest = trimmed[4..].trim();
            if rest.is_empty() {
                // Show current log level
                return UserCommand::ShowLogLevel;
            }
            return UserCommand::ChangeLogLevel {
                level: rest.to_string(),
            };
        }

        // /web command
        if input_lower.starts_with("/web") {
            let rest = trimmed[4..].trim();
            if rest.is_empty() {
                // Show current web search status
                return UserCommand::ShowWebSearch;
            }
            // Parse on/off/ask argument using WebSearchMode's FromStr
            match rest.parse::<WebSearchMode>() {
                Ok(mode) => return UserCommand::SetWebSearch { mode },
                Err(_) => {
                    // Unknown argument - treat as unknown command
                    return UserCommand::UnknownSlashCommand {
                        command: trimmed.to_string(),
                    };
                }
            }
        }

        // /handler command
        if input_lower.starts_with("/handler") {
            let rest = trimmed[8..].trim();
            if rest.is_empty() {
                // Show current event handler mode
                return UserCommand::ShowEventHandler;
            }
            // Parse any/script/static/llm argument using EventHandlerMode's FromStr
            match rest.parse::<EventHandlerMode>() {
                Ok(mode) => return UserCommand::SetEventHandler { mode },
                Err(_) => {
                    // Unknown argument - treat as unknown command
                    return UserCommand::UnknownSlashCommand {
                        command: trimmed.to_string(),
                    };
                }
            }
        }

        // /test_ask command - test web search approval prompt
        if input_lower == "/test_ask" {
            return UserCommand::TestAsk;
        }

        // /test command - generate test output lines
        if input_lower.starts_with("/test") {
            let rest = trimmed[5..].trim();
            if let Ok(count) = rest.parse::<usize>() {
                return UserCommand::TestOutput { count };
            }
            // Invalid count - treat as unknown command
        }

        // /footer_status command - set custom footer status message
        if input_lower.starts_with("/footer_status") {
            let rest = trimmed[14..].trim();
            let message = if rest.is_empty() {
                None
            } else {
                // Replace literal \n with actual newlines
                Some(rest.replace("\\n", "\n"))
            };
            return UserCommand::SetFooterStatus { message };
        }

        // /docs command - show protocol documentation
        if input_lower.starts_with("/docs") {
            let rest = trimmed[5..].trim();
            let protocol = if rest.is_empty() {
                None
            } else {
                Some(rest.to_string())
            };
            return UserCommand::ShowDocs { protocol };
        }

        // /env, /environment command - show environment information
        if input_lower == "/env" || input_lower == "/environment" {
            return UserCommand::ShowEnvironment;
        }

        // /usage command - show usage statistics
        if input_lower == "/usage" {
            return UserCommand::ShowUsage;
        }

        // /stability, /protocols command - list protocols grouped by maturity
        if input_lower == "/stability" || input_lower == "/protocols" {
            return UserCommand::ShowStability;
        }

        // /save command - save configuration to file
        if input_lower.starts_with("/save") {
            let rest = trimmed[5..].trim();
            if rest.is_empty() {
                // No filename provided - treat as unknown command
                return UserCommand::UnknownSlashCommand {
                    command: trimmed.to_string(),
                };
            }
            // Parse name and optional ID
            let parts: Vec<&str> = rest.split_whitespace().collect();
            let name = parts[0].to_string();
            let id = if parts.len() > 1 {
                parts[1].parse::<u32>().ok()
            } else {
                None
            };
            return UserCommand::Save { name, id };
        }

        // /load command - load configuration from file
        if input_lower.starts_with("/load") {
            let rest = trimmed[5..].trim();
            if rest.is_empty() {
                // No filename provided - treat as unknown command
                return UserCommand::UnknownSlashCommand {
                    command: trimmed.to_string(),
                };
            }
            return UserCommand::Load {
                name: rest.to_string(),
            };
        }

        // /stop command - stop everything or specific ID
        if input_lower.starts_with("/stop") {
            let rest = trimmed[5..].trim();
            if rest.is_empty() {
                // Stop everything
                return UserCommand::StopAll;
            }
            // Try to parse ID
            if let Ok(id) = rest.parse::<u32>() {
                return UserCommand::StopById { id };
            }
            // Invalid ID - treat as unknown command
            return UserCommand::UnknownSlashCommand {
                command: trimmed.to_string(),
            };
        }

        // /sqlite command - database management
        #[cfg(feature = "sqlite")]
        if input_lower.starts_with("/sqlite") {
            let rest = trimmed[7..].trim();
            if rest.is_empty() {
                // List all databases
                return UserCommand::Sqlite {
                    db_id: None,
                    query: None,
                };
            }

            // Try to parse first part as database ID
            let parts: Vec<&str> = rest.splitn(2, ' ').collect();
            if let Ok(id) = parts[0].parse::<u32>() {
                // Database ID provided
                if parts.len() > 1 {
                    // Query provided
                    return UserCommand::Sqlite {
                        db_id: Some(id),
                        query: Some(parts[1].trim().to_string()),
                    };
                } else {
                    // No query - show schema
                    return UserCommand::Sqlite {
                        db_id: Some(id),
                        query: None,
                    };
                }
            } else {
                // Not a database ID - treat entire rest as query for first DB
                return UserCommand::Sqlite {
                    db_id: None,
                    query: Some(rest.to_string()),
                };
            }
        }

        // /backend command - show or switch LLM backend
        if input_lower.starts_with("/backend") {
            let rest = trimmed[8..].trim();
            if rest.is_empty() {
                return UserCommand::ShowBackend;
            }
            return UserCommand::SetBackend {
                args: rest.to_string(),
            };
        }

        // /simple command - start simple protocol or list available protocols
        if input_lower.starts_with("/simple") {
            let rest = trimmed[7..].trim();
            if rest.is_empty() {
                // List available simple protocols
                return UserCommand::ListSimple;
            }
            // Start specific simple protocol
            return UserCommand::StartSimple {
                protocol: rest.to_string(),
            };
        }

        // /manage command - list servers/clients and show create/update shapes
        if input_lower == "/manage" {
            return UserCommand::Manage;
        }

        // /update command - update a running server/client's instruction by id
        if input_lower.starts_with("/update") {
            let rest = trimmed[7..].trim();
            // Expect: <id> <instruction text...>
            let mut parts = rest.splitn(2, char::is_whitespace);
            let id_part = parts.next().unwrap_or("").trim();
            let instruction = parts.next().unwrap_or("").trim().to_string();
            if let Ok(id) = id_part.parse::<u32>() {
                if !instruction.is_empty() {
                    return UserCommand::Update { id, instruction };
                }
            }
            // Malformed - show usage as an unknown command
            return UserCommand::UnknownSlashCommand {
                command: trimmed.to_string(),
            };
        }

        // Unknown slash command - return error, don't send to LLM
        // This prevents accidental LLM calls from typos like "/modle"
        UserCommand::UnknownSlashCommand {
            command: trimmed.to_string(),
        }
    }
}