use clap::Parser;
use log::{debug, error, warn};
use reqwest::blocking::Client;
use serde::{Deserialize, Serialize};
use std::process::Command;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let args = CliArgs::parse();

    if args.debug {
        let _ = simplelog::SimpleLogger::init(
            simplelog::LevelFilter::Debug,
            simplelog::Config::default(),
        );
    } else {
        let _ = simplelog::SimpleLogger::init(
            simplelog::LevelFilter::Info,
            simplelog::Config::default(),
        );
    }

    debug!("Opening Config file: {}", args.config_file);
    debug!(
        "Config file exists: {}",
        std::fs::metadata(args.config_file.clone()).is_ok()
    );

    let file_contents = match std::fs::read_to_string(args.config_file) {
        Ok(val) => val,
        Err(e) => {
            error!("Could not read config file: {}", e.to_string());
            panic!("{}", e);
        }
    };

    let cfg: Config = match toml::from_str(file_contents.as_str()) {
        Ok(val) => val,
        Err(e) => {
            error!("Could not parse config file: {}", e.to_string());
            panic!("{}", e);
        }
    };

    let mut body_content: String = format!(
        "*Last Updated:* {} \n",
        chrono::Local::now().format("%D - %H:%M:%S")
    );

    let mut drives: Vec<String> = vec![];

    match std::fs::read_dir("/dev/") {
        Ok(paths) => {
            for path in paths.flatten() {
                let tmp = path.path().to_string_lossy().to_string();
                if tmp.starts_with("/dev/sd") && tmp.len() == 8 {
                    drives.push(tmp);
                }
            }
        }
        Err(e) => {
            error!("Error opening /dev/: {}", e.to_string());
            panic!("{}", e);
        }
    };

    {
        let mut drive_temps: Vec<String> = vec![];

        for drive in drives {
            let output = match Command::new(args.hddtemp_executable.clone())
                .arg(drive.clone())
                .output()
            {
                Ok(val) => String::from_utf8_lossy(&val.stdout).into_owned(),
                Err(e) => {
                    warn!("Error running hddtemp: {}", e.to_string());
                    warn!("Drive was: '{}'", drive);
                    "".to_string()
                }
            };

            if !output.contains("sensor") {
                drive_temps.push(output.replace('\n', "?"));
            } else {
                drive_temps.push(output[0..9].to_string() + " No Sensor");
            }
        }
        body_content.push_str("## Hard Drive Temps\n");
        body_content.push_str(drive_temps.join("\n").as_str());
    }

    Client::new()
        .put(format!(
            "https://{}/index.php/apps/notes/api/v1/notes/{}",
            cfg.server_url.clone(),
            cfg.note_id.clone()
        ))
        .header("Accept", "application/json")
        .header("Content-Type", "application/json")
        .basic_auth(cfg.user.clone(), Some(cfg.pswd.clone()))
        .body(
            serde_json::to_string(&NoteUpdate {
                content: body_content,
            })
            .unwrap(),
        )
        .send()?;

    Ok(())
}

#[derive(Serialize, Deserialize, Debug)]
struct Note {
    id: usize,
    etag: String,
    readonly: bool,
    modified: u64,
    title: String,
    category: String,
    content: String,
    favorite: bool,
}

#[derive(Serialize, Deserialize, Debug)]
struct NoteUpdate {
    content: String,
}

#[derive(Serialize, Deserialize)]
struct Config {
    user: String,
    pswd: String,
    note_id: String,
    server_url: String,
}

impl Default for Config {
    fn default() -> Self {
        Self {
            user: "".to_string(),
            pswd: "".to_string(),
            note_id: "".to_string(),
            server_url: "".to_string(),
        }
    }
}

#[derive(Parser, Debug)]
#[command(author, version, about, long_about=None)]
struct CliArgs {
    /// Path to config .toml file
    #[arg(short, long)]
    config_file: String,

    #[arg(short, long)]
    hddtemp_executable: String,

    #[arg(short, long)]
    debug: bool,
}