You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.rs
    path of file: ./repos/memex/examples/clippy/src
    
    the code of the file until where you have to start completion: use chrono::Utc;
use clap::{Parser, Subcommand};
use colored::Colorize;
use indicatif::{ProgressBar, ProgressStyle};
use serde::{Deserialize, Serialize};
use std::{fs::File, io::Read, path::PathBuf, process::ExitCode};
use tokio::sync::mpsc;

use libclippy::{ask_clippy, clippy_say, config::ClippyConfig, LlmEvent};

#[derive(Subcommand, PartialEq)]
enum Command {
    /// Ask clippy a question using it's memory of the documents you've added.
    Ask {
        /// Question you want to ask clippy
        question: String,
    },
    /// Ask clippy with only knowledge contained in the model.
    #[command(visible_alias = "quick-question")]
    Qq { question: String },
    /// Erase clippy's memory
    #[command(visible_alias = "neuralyze")]
    Forget,
    /// Load a document into Clippy's all-knowing brain.
    LoadFile {
        /// File to load
        file: PathBuf,
    },
}

#[derive(Parser)]
#[command(author, version, about, long_about = None)]
pub struct Args {
    #[arg(short, long, default_value = "resources/config.vicuna.toml")]
    config: String,
    #[arg(short, long, default_value = "http://127.0.0.1:8181/api")]
    memex_uri: String,
    #[command(subcommand)]
    command: Command,
}

#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "lowercase")]
pub enum ApiResponseStatus {
    Ok,
    Error,
}

#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct ApiResponse<T> {
    /// Execution time in seconds
    pub time: f32,
    pub status: ApiResponseStatus,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub result: Option<T>,
}

#[derive(Debug, Serialize, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct TaskResult {
    task_id: i64,
    collection: String,
    status: String,
    created_at: chrono::DateTime<Utc>,
}

#[derive(Debug, Deserialize)]
#[serde(rename_all = "camelCase")]
pub struct SearchResults {
    pub results: Vec<libclippy::Document>,
}

fn elog(msg: String) {
    eprintln!("{}: {}", "ERROR".bright_red(), msg);
}

#[tokio::main]
async fn main() -> ExitCode {
    let client = reqwest::Client::new();
    let args = Args::parse();

    // do a quick check to see if memex is running
    let result = match client
        .get(format!("{}/health", args.memex_uri))
        .send()
        .await
    {
        Ok(res) => res,
        Err(err
    
async fn main() -> ExitCode {
    let client = reqwest::Client::new();
    let args = Args::parse();

    // do a quick check to see if memex is running
    let result = match client
        .get(format!("{}/health", args.memex_uri))
        .send()
        .await
    {
        Ok(res) => res,
        Err(err) => {
            elog(format!(
                "Unable to connect to memex (is it running?): {err}"
            ));
            return ExitCode::FAILURE;
        }
    };

    if let Err(err) = result.error_for_status() {
        elog(format!("Received error from memex: {err}"));
        return ExitCode::FAILURE;
    }

    // load clippy config
    let clippy_cfg: ClippyConfig = match File::open(args.config) {
        Ok(mut reader) => {
            let mut config = String::new();
            let _ = reader.read_to_string(&mut config);
            toml::from_str(&config).expect("Unable to parse config.toml")
        }
        Err(err) => {
            let cwd = std::env::current_dir();
            elog(format!(
                "Unable to read config.toml: {err}, current working dir: {cwd:?}"
            ));
            return ExitCode::FAILURE;
        }
    };

    println!(
        "ðŸ¤– Using model @ {}",
        clippy_cfg.model.path.to_string_lossy()
    );

    match args.command {
        Command::Ask { question } => {
            handle_ask_cmd(&client, &args.memex_uri, &clippy_cfg, true, &question).await;
        }
        Command::Qq { question } => {
            handle_ask_cmd(&client, &args.memex_uri, &clippy_cfg, false, &question).await;
        }
        Command::LoadFile { file } => {
            if !file.exists() || !file.is_file() {
                elog(format!("{:?} is not a valid file.", file));
                return ExitCode::FAILURE;
            }

            // Read file to string
            let mut file = File::open(file).expect("Unable to open file");
            let mut file_data = String::new();
            file.read_to_string(&mut file_data)
                .expect("Unable to read file");

            // Post to memex
            let result = match client
                .post(format!("{}/collections/clippy", args.memex_uri))
                .json(&serde_json::json!({ "content": file_data }))
                .send()
                .await
            {
                Ok(res) => res,
                Err(err) => {
                    elog(format!("Unable to add file: {err}"));
                    return ExitCode::FAILURE;
                }
            };

            let resp = result
                .json::<ApiResponse<TaskResult>>()
                .await
                .expect("Unable to parse response")
                .result
                .expect("Unable to parse response");

            println!("âœ… added document (task_id: {})", resp.task_id);
        }
        Command::Forget => {
            println!("ðŸ—‘ï¸  Erasing clippy's memory.");
            let resp = client
                .delete(format!("{}/collections/clippy", args.memex_uri))
                .send()
                .await
                .expect("Unable to connect to memex")
                .error_for_status();
            match resp {
                Ok(_) => println!("ðŸ¤– Ready for action."),
                Err(err) => {
                    elog(format!("Unable to delete memory: {err}"));
                    return ExitCode::FAILURE;
                }
            }
        }
    }

    ExitCode::SUCCESS
}