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/tp-note/tpnote/src
    
    the code of the file until where you have to start completion: #![windows_subsystem = "windows"]
#![allow(clippy::vec_init_then_push)]
//! _Tp-Note_ is a note taking tool and a template system, that consistently
//! synchronizes the note's metadata with its filename.
//! _Tp-Note_'s main design goal is to convert some input text -
//! usually provided by the system's clipboard - into a Markdown note file, with
//! a descriptive YAML header and meaningful filename.
//! _Tp-Note_ collects
//! various information about its environment and the clipboard and stores them
//! in variables. New notes are created by filling these variables in predefined
//! and customizable `Tera`-templates. In case `<path>` points to an existing
//! _Tp-Note_-file, the note's metadata is analyzed and, if necessary, its
//! filename is modified. For all other file types, _Tp-Note_ creates a new note
//! that annotates the file `<path>` points to. If `<path>` is a directory (or,
//! when omitted the current working directory), a new note is created in that
//! directory. After creation, _Tp-Note_ launches an external editor of your
//! choice. Although the note's structure follows _Pandoc_'s conventions, it is
//! not tied to any specific Markup language.

#[cfg(feature = "message-box")]
mod alert_service;
mod config;
mod error;
mod file_editor;
mod logger;
mod process_ext;
mod settings;
mod template;
#[cfg(feature = "viewer")]
mod viewer;
mod workflow;

#[cfg(feature = "message-box")]
use crate::alert_service::AlertService;
use crate::config::Cfg;
use crate::config::AUTHOR;
use crate::config::CFG;
use crate::config::CFG_FILE_LOADING;
use crate::config::CONFIG_PATHS;
use crate::config::COPYRIGHT_FROM;
use crate::config::PKG_VERSION;
#[cfg(feature = "read-clipboard")]
use crate::error::WorkflowError;
use crate::logger::AppLogger;
use crate::settings::ARGS;
#[cfg(feature = "read-clipboard")]
use crate::settings::LAUNCH_EDITOR;
#[cfg(feature = "message-box")]
use crate::settings::RUNS_ON_CONSOLE;
use crate::workflow::run;
#[cfg(feature = "read-clipboard")]
use arboard::Clipboard;
use config::MIN_CONFIG_FILE_VERSION;
use error::ConfigFileError;
use semver::Version;
use serde::Serialize;
use settings::CLIPBOARD;
use std::path::Path;
use std::process;
#[cfg(feature = "read-clipboard")]
use tpnote_lib::error::NoteError;

#[derive(Debug, PartialEq, Serialize)]
struct About {
    version: String,
    features: Vec<String>,
    searched_config_file_paths: Vec<String>,
    found_config_files: Vec<String>,
    copyright: String,
}

/// Print some error message if `run()` does not complete.
/// Exit prematurely if the configuration file version does
/// not match the program version.
fn main() {
    // Read the clipboard before starting the logger.
    lazy_static::initialize(&CLIPBOARD);

    // Setup logger.
    AppLogger::init();

    // Read configuration file, or write one if none exists.
    lazy_static::initialize(&CFG);

    // Set the debug level. Only use config file value if
    // no command-line-option `--debug` is present.
    let level = ARGS.debug.unwrap_or(CFG.arg_default.debug);
    AppLogger::set_max_level(level);

    // This eventually will extend the error reporting with more
    // popup alert windows.
    AppLogger::set_popup_always_enabled(ARGS.popup || CFG.arg_default.popup);

    // Check if the config file loading was successful.
    let cfg_file_loading = &*CFG_FILE_LOADING.read();
    let cfg_file_loading_err = cfg_file_loading.as_ref().err().map(|e| e.to_string());

    // Check if we can parse the version number in there.
    let cfg_file_version = Version::parse(&CFG.version);
    let cfg_file_version_err = cfg_file_version.as_ref().err().map(|e| e.to_string());

    // This is `Some::String` if one of them is `Err`.
    let cfg_err = cfg_file_loading_err.or(cfg_file_version_err);

    let config_file_version = match cfg_err {
        // This is always `Some::Version` because none of them are `Err`.
        None => cfg_file_version.ok(),

        // One of them is `Err`, we do not care who.
        Some(e) => {
            log::error!("{}", ConfigFileError::ConfigFileLoadParse { error: e });

            // Move erroneous config file away.
            if let Err(e) = Cfg::backup_and_remove_last() {
                log::error!(
                    "{}",
                    ConfigFileError::ConfigFileBackup {
                        error: e.to_string()
                    }
                    .to_string()
                );
                AppLogger::flush();
                process::exit(5);
            };

            // As we have an error, we indicate that there is no version.
            None
        }
    };

    // Is version number in the configuration file high enough?
    if let Some(config_file_version) = config_file_version {
        if config_file_version < Version::parse(MIN_CONFIG_FILE_VERSION.unwrap_or("0.0.0")).unwrap()
        {
            log::error!(
                "{}",
                ConfigFileError::ConfigFileVersionMismatch {
                    config_file_version: config_file_version.to_string(),
                    min_version: MIN_CONFIG_FILE_VERSION.unwrap_or("0.0.0").to_string(),
                }
                .to_string()
            );
            if let Err(e) = Cfg::backup_and_remove_last() {
                log::error!(
                    "{}",
                    ConfigFileError::ConfigFileBackup {
                        error: e.to_string()
                    }
                    .to_string()
                );
                AppLogger::flush();
                process::exit(6);
            };
        };
    };

    // Process `arg = `--default-config`.
    if let Some(path) = &ARGS.config_defaults {
        let path = Path::new(&path);

        if let Err(e) = Cfg::write_default_to_file_or_stdout(path) {
            log::error!(
                "{}",
                ConfigFileError::ConfigFileWrite {
                    error: e.to_string()
                }
                .to_string()
            );
            AppLogger::flush();
            process::exit(5);
        };
        // Exit.
        AppLogger::flush();
        process::exit(0);
    }

    // Process `arg = `--version`.
    // The output is YAML formatted for further automatic processing.
    if ARGS.version {
        #[allow(u
    
fn main() {
    // Read the clipboard before starting the logger.
    lazy_static::initialize(&CLIPBOARD);

    // Setup logger.
    AppLogger::init();

    // Read configuration file, or write one if none exists.
    lazy_static::initialize(&CFG);

    // Set the debug level. Only use config file value if
    // no command-line-option `--debug` is present.
    let level = ARGS.debug.unwrap_or(CFG.arg_default.debug);
    AppLogger::set_max_level(level);

    // This eventually will extend the error reporting with more
    // popup alert windows.
    AppLogger::set_popup_always_enabled(ARGS.popup || CFG.arg_default.popup);

    // Check if the config file loading was successful.
    let cfg_file_loading = &*CFG_FILE_LOADING.read();
    let cfg_file_loading_err = cfg_file_loading.as_ref().err().map(|e| e.to_string());

    // Check if we can parse the version number in there.
    let cfg_file_version = Version::parse(&CFG.version);
    let cfg_file_version_err = cfg_file_version.as_ref().err().map(|e| e.to_string());

    // This is `Some::String` if one of them is `Err`.
    let cfg_err = cfg_file_loading_err.or(cfg_file_version_err);

    let config_file_version = match cfg_err {
        // This is always `Some::Version` because none of them are `Err`.
        None => cfg_file_version.ok(),

        // One of them is `Err`, we do not care who.
        Some(e) => {
            log::error!("{}", ConfigFileError::ConfigFileLoadParse { error: e });

            // Move erroneous config file away.
            if let Err(e) = Cfg::backup_and_remove_last() {
                log::error!(
                    "{}",
                    ConfigFileError::ConfigFileBackup {
                        error: e.to_string()
                    }
                    .to_string()
                );
                AppLogger::flush();
                process::exit(5);
            };

            // As we have an error, we indicate that there is no version.
            None
        }
    };

    // Is version number in the configuration file high enough?
    if let Some(config_file_version) = config_file_version {
        if config_file_version < Version::parse(MIN_CONFIG_FILE_VERSION.unwrap_or("0.0.0")).unwrap()
        {
            log::error!(
                "{}",
                ConfigFileError::ConfigFileVersionMismatch {
                    config_file_version: config_file_version.to_string(),
                    min_version: MIN_CONFIG_FILE_VERSION.unwrap_or("0.0.0").to_string(),
                }
                .to_string()
            );
            if let Err(e) = Cfg::backup_and_remove_last() {
                log::error!(
                    "{}",
                    ConfigFileError::ConfigFileBackup {
                        error: e.to_string()
                    }
                    .to_string()
                );
                AppLogger::flush();
                process::exit(6);
            };
        };
    };

    // Process `arg = `--default-config`.
    if let Some(path) = &ARGS.config_defaults {
        let path = Path::new(&path);

        if let Err(e) = Cfg::write_default_to_file_or_stdout(path) {
            log::error!(
                "{}",
                ConfigFileError::ConfigFileWrite {
                    error: e.to_string()
                }
                .to_string()
            );
            AppLogger::flush();
            process::exit(5);
        };
        // Exit.
        AppLogger::flush();
        process::exit(0);
    }

    // Process `arg = `--version`.
    // The output is YAML formatted for further automatic processing.
    if ARGS.version {
        #[allow(unused_mut)]
        let mut features = Vec::new();
        #[cfg(feature = "lang-detection")]
        features.push("lang-detection".to_string());
        #[cfg(feature = "message-box")]
        features.push("message-box".to_string());
        #[cfg(feature = "read-clipboard")]
        features.push("read-clipboard".to_string());
        #[cfg(feature = "renderer")]
        features.push("renderer".to_string());
        #[cfg(feature = "viewer")]
        features.push("viewer".to_string());

        let about = About {
            version: PKG_VERSION.unwrap_or("unknown").to_string(),
            features,
            searched_config_file_paths: CONFIG_PATHS
                .iter()
                .map(|p| p.to_str().unwrap_or_default().to_owned())
                .collect(),
            found_config_files: CONFIG_PATHS
                .iter()
                .filter(|p| p.exists())
                .map(|p| p.to_str().unwrap_or_default().to_owned())
                .collect(),
            copyright: format!(
                "Â© {}-{} {}",
                COPYRIGHT_FROM,
                time::OffsetDateTime::now_utc().year(),
                AUTHOR.unwrap()
            ),
        };

        let mut msg = serde_yaml::to_string(&about).unwrap_or_else(|_| "unknown".to_string());
        msg.push_str("---");

        // Print on console.
        println!("{}", msg);

        // Print in alert box.
        #[cfg(feature = "message-box")]
        if !*RUNS_ON_CONSOLE && !ARGS.batch {
            let _ = AlertService::push_str(msg);
        };
        AppLogger::flush();
        process::exit(0);
    };

    //
    // Run Tp-Note.
    let res = run();
    match res {
        Err(ref e) => {
            // Something went wrong. Inform user.
            log::error!("{}", e);
        }

        // Print `path` unless `--export=-`.
        Ok(ref path) => {
            if let Some(p) = &ARGS.export {
                if p.display().to_string() != "-" {
                    println!("{}", path.display());
                }
            } else {
                println!("{}", path.display());
            }
        }
    };

    // Wait if there are still error messages windows open.
    AppLogger::flush();

    // Delete clipboard content.
    #[cfg(feature = "read-clipboard")]
    if (*LAUNCH_EDITOR && !ARGS.batch && CFG.clipboard.read_enabled && CFG.clipboard.empty_enabled)
        || matches!(
            &res,
            Err(WorkflowError::Note(NoteError::InvalidInputYaml { .. }))
        )
    {
        if let Ok(mut ctx) = Clipboard::new() {
            let _ = ctx.set_text("".to_string());
        };
    }

    if res.is_err() {
        process::exit(1);
    }
}