vtcode 0.137.0

use anyhow::Result;
use shell_words::split as shell_split;
use vtcode_core::llm::providers::local_server::LocalProvider;
use vtcode_core::utils::ansi::{AnsiRenderer, MessageStyle};

use super::rendering::{render_local_usage, render_mcp_usage, render_secret_usage};
use super::{LocalServerAction, McpCommandAction, SecretCommandAction, SlashCommandOutcome};

pub(super) fn handle_mcp_command(args: &str, renderer: &mut AnsiRenderer) -> Result<SlashCommandOutcome> {
    if args.is_empty() {
        return Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Interactive });
    }

    let tokens = match shell_split(args) {
        Ok(tokens) => tokens,
        Err(err) => {
            renderer.line(MessageStyle::Error, &format!("Failed to parse arguments: {err}"))?;
            return Ok(SlashCommandOutcome::Handled);
        }
    };

    if tokens.is_empty() {
        return Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Interactive });
    }

    let subcommand = tokens[0].to_ascii_lowercase();
    match subcommand.as_str() {
        "status" | "overview" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Overview }),
        "list" | "providers" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::ListProviders }),
        "tools" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::ListTools }),
        "refresh" | "reload" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::RefreshTools }),
        "config" => {
            if tokens.len() > 1 {
                let mode = tokens[1].to_ascii_lowercase();
                match mode.as_str() {
                    "edit" | "--edit" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::EditConfig }),
                    "show" | "list" | "status" => {
                        Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::ShowConfig })
                    }
                    other if other.starts_with("--") => {
                        if other == "--edit" {
                            Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::EditConfig })
                        } else {
                            render_mcp_usage(renderer)?;
                            Ok(SlashCommandOutcome::Handled)
                        }
                    }
                    _ => {
                        render_mcp_usage(renderer)?;
                        Ok(SlashCommandOutcome::Handled)
                    }
                }
            } else {
                Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::ShowConfig })
            }
        }
        "edit" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::EditConfig }),
        "repair" | "fix" => Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Repair }),
        "diagnose" | "diagnostics" | "health" => {
            Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Diagnose })
        }
        "login" => {
            if tokens.len() < 2 {
                render_mcp_usage(renderer)?;
                return Ok(SlashCommandOutcome::Handled);
            }
            Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::Login(tokens[1].clone()) })
        }
        "logout" => {
            if tokens.len() < 2 {
                render_mcp_usage(renderer)?;
                return Ok(SlashCommandOutcome::Handled);
            }
            Ok(SlashCommandOutcome::ManageMcp {
                action: McpCommandAction::Logout(tokens[1].clone()),
            })
        }
        "help" | "--help" => {
            render_mcp_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
        other if other.starts_with("--") => {
            if other == "--list" {
                return Ok(SlashCommandOutcome::ManageMcp { action: McpCommandAction::ListProviders });
            }
            render_mcp_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
        _ => {
            render_mcp_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
    }
}

pub(super) fn handle_local_command(args: &str, renderer: &mut AnsiRenderer) -> Result<SlashCommandOutcome> {
    let trimmed = args.trim();
    if trimmed.is_empty() {
        return Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Interactive });
    }

    let tokens = match shell_split(trimmed) {
        Ok(tokens) => tokens,
        Err(err) => {
            renderer.line(MessageStyle::Error, &format!("Failed to parse arguments: {err}"))?;
            render_local_usage(renderer)?;
            return Ok(SlashCommandOutcome::Handled);
        }
    };

    if tokens.is_empty() {
        return Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Interactive });
    }

    // Normalize a provider argument to its canonical key (e.g. "lm-studio" -> "lmstudio")
    let normalize =
        |s: &str| -> Option<String> { LocalProvider::from_key(&s.to_ascii_lowercase()).map(|p| p.key().to_string()) };

    let first = tokens[0].to_ascii_lowercase();
    match first.as_str() {
        "status" => {
            let provider = tokens.get(1).and_then(|s| normalize(s));
            Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Status { provider } })
        }
        "start" => {
            let provider = tokens.get(1).and_then(|s| normalize(s));
            Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Start { provider } })
        }
        "stop" => {
            let provider = tokens.get(1).and_then(|s| normalize(s));
            Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Stop { provider } })
        }
        "configure" | "config" => {
            let provider = tokens.get(1).and_then(|s| normalize(s));
            Ok(SlashCommandOutcome::ManageLocalServer { action: LocalServerAction::Configure { provider } })
        }
        "troubleshoot" | "diagnose" | "fix" => {
            let provider = tokens.get(1).and_then(|s| normalize(s));
            Ok(SlashCommandOutcome::ManageLocalServer {
                action: LocalServerAction::Troubleshoot { provider },
            })
        }
        "help" | "--help" => {
            render_local_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
        _ => {
            // Check if it's a valid provider name (from_key handles aliases)
            if let Some(resolved) = LocalProvider::from_key(&first) {
                let canonical = resolved.key().to_string();
                if tokens.len() > 1 {
                    let action_str = tokens[1].to_ascii_lowercase();
                    let action = match action_str.as_str() {
                        "status" => LocalServerAction::Status { provider: Some(canonical.clone()) },
                        "start" => LocalServerAction::Start { provider: Some(canonical.clone()) },
                        "stop" => LocalServerAction::Stop { provider: Some(canonical.clone()) },
                        "configure" | "config" => LocalServerAction::Configure { provider: Some(canonical.clone()) },
                        "troubleshoot" | "diagnose" | "fix" => {
                            LocalServerAction::Troubleshoot { provider: Some(canonical.clone()) }
                        }
                        _ => {
                            render_local_usage(renderer)?;
                            return Ok(SlashCommandOutcome::Handled);
                        }
                    };
                    Ok(SlashCommandOutcome::ManageLocalServer { action })
                } else {
                    Ok(SlashCommandOutcome::ManageLocalServer {
                        action: LocalServerAction::Provider { name: canonical },
                    })
                }
            } else {
                render_local_usage(renderer)?;
                Ok(SlashCommandOutcome::Handled)
            }
        }
    }
}

/// Parse `/secret` subcommands into a [`SecretCommandAction`].
///
/// Mirrors the `/mcp` and `/local` parsing pattern: empty args → Interactive,
/// unknown subcommand → render usage and return `Handled`.
pub(super) fn handle_secret_command(args: &str, renderer: &mut AnsiRenderer) -> Result<SlashCommandOutcome> {
    if args.is_empty() {
        return Ok(SlashCommandOutcome::ManageSecrets { action: SecretCommandAction::Interactive });
    }

    let tokens = match shell_split(args) {
        Ok(tokens) => tokens,
        Err(err) => {
            renderer.line(MessageStyle::Error, &format!("Failed to parse arguments: {err}"))?;
            return Ok(SlashCommandOutcome::Handled);
        }
    };

    if tokens.is_empty() {
        return Ok(SlashCommandOutcome::ManageSecrets { action: SecretCommandAction::Interactive });
    }

    let subcommand = tokens[0].to_ascii_lowercase();
    match subcommand.as_str() {
        "list" | "ls" => Ok(SlashCommandOutcome::ManageSecrets { action: SecretCommandAction::List }),
        "status" | "info" => {
            let provider = tokens.get(1).map(|s| s.to_ascii_lowercase());
            Ok(SlashCommandOutcome::ManageSecrets { action: SecretCommandAction::Status { provider } })
        }
        "add" | "set" | "replace" | "update" => {
            let Some(provider) = tokens.get(1) else {
                renderer.line(MessageStyle::Error, "Usage: /secret add <provider>")?;
                render_secret_usage(renderer)?;
                return Ok(SlashCommandOutcome::Handled);
            };
            Ok(SlashCommandOutcome::ManageSecrets {
                action: SecretCommandAction::Add { provider: provider.to_ascii_lowercase() },
            })
        }
        "delete" | "remove" | "rm" | "clear" => {
            let Some(provider) = tokens.get(1) else {
                renderer.line(MessageStyle::Error, "Usage: /secret delete <provider>")?;
                render_secret_usage(renderer)?;
                return Ok(SlashCommandOutcome::Handled);
            };
            Ok(SlashCommandOutcome::ManageSecrets {
                action: SecretCommandAction::Delete { provider: provider.to_ascii_lowercase() },
            })
        }
        "migrate" => {
            let provider = tokens.get(1).map(|s| s.to_ascii_lowercase());
            Ok(SlashCommandOutcome::ManageSecrets { action: SecretCommandAction::Migrate { provider } })
        }
        "help" | "--help" | "-h" => {
            render_secret_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
        _ => {
            render_secret_usage(renderer)?;
            Ok(SlashCommandOutcome::Handled)
        }
    }
}