crusty 0.6.0

use std::{env, fs};

use crusty_core::config as rc;
use once_cell::sync::Lazy;
use serde::Deserialize;

#[allow(unused_imports)]
use crate::prelude::*;
use crate::{job_reader, types::*};

pub static CONFIG: Lazy<Mutex<CrustyConfig>> = Lazy::new(|| Mutex::new(CrustyConfig::default()));

#[derive(Clone, Debug, Deserialize)]
pub struct ClickhouseWriterConfig {
	pub table_name: String,
	pub label: String,
	pub buffer_capacity: usize,
	pub check_for_force_write_duration: rc::CDuration,
	pub force_write_duration: rc::CDuration,
}

#[derive(Clone, Debug, Deserialize)]
pub struct ClickhouseConfig {
	pub url:      String,
	pub username: String,
	pub password: String,
	pub database: String,

	pub metrics_queue:           ClickhouseWriterConfig,
	pub metrics_db:              ClickhouseWriterConfig,
	pub metrics_task:            ClickhouseWriterConfig,
	pub domain_discovery_insert: ClickhouseWriterConfig,
	pub domain_discovery_update: ClickhouseWriterConfig,
}

impl Default for ClickhouseConfig {
	fn default() -> Self {
		Self {
			url:      String::from("http://localhost:8123"),
			username: String::from("default"),
			password: String::from(""),
			database: String::from("default"),

			metrics_queue:           ClickhouseWriterConfig {
				table_name: String::from("metrics_queue"),
				label: String::from(""),
				buffer_capacity: 1000,
				check_for_force_write_duration: rc::CDuration::from_millis(100),
				force_write_duration: rc::CDuration::from_millis(500),
			},
			metrics_db:              ClickhouseWriterConfig {
				table_name: String::from("metrics_db"),
				label: String::from(""),
				buffer_capacity: 1000,
				check_for_force_write_duration: rc::CDuration::from_millis(100),
				force_write_duration: rc::CDuration::from_millis(500),
			},
			metrics_task:            ClickhouseWriterConfig {
				table_name: String::from("metrics_task"),
				label: String::from(""),
				buffer_capacity: 10000,
				check_for_force_write_duration: rc::CDuration::from_millis(100),
				force_write_duration: rc::CDuration::from_millis(500),
			},
			domain_discovery_insert: ClickhouseWriterConfig {
				table_name: String::from("domain_discovery"),
				label: String::from("insert"),
				buffer_capacity: 10000,
				check_for_force_write_duration: rc::CDuration::from_millis(500),
				force_write_duration: rc::CDuration::from_millis(2500),
			},
			domain_discovery_update: ClickhouseWriterConfig {
				table_name: String::from("domain_discovery"),
				label: String::from("update"),
				buffer_capacity: 10000,
				check_for_force_write_duration: rc::CDuration::from_millis(500),
				force_write_duration: rc::CDuration::from_millis(2500),
			},
		}
	}
}

#[derive(Clone, Debug, Deserialize)]
pub struct LogConfig {
	pub level:  rc::CLevel,
	pub ansi:   bool,
	pub filter: Option<Vec<String>>,
}

impl Default for LogConfig {
	fn default() -> Self {
		Self { level: rc::CLevel(Level::INFO), ansi: true, filter: None }
	}
}

#[derive(Clone, Debug, Deserialize)]
#[serde(default)]
pub struct CrustyConfig {
	pub host:       String,
	pub app_id:     String,
	pub log:        LogConfig,
	pub clickhouse: ClickhouseConfig,

	pub ddc_cap:                     usize,
	pub ddc_lifetime:                rc::CDuration,
	pub queue_monitor_interval:      rc::CDuration,
	pub parser_processor_stack_size: rc::CBytes,

	pub networking_profile:  rc::NetworkingProfile,
	pub concurrency_profile: rc::ConcurrencyProfile,
	pub job_reader:          job_reader::JobReaderConfig,
}

impl Default for CrustyConfig {
	fn default() -> Self {
		Self {
			host:       String::from("crawler-1"),
			app_id:     String::from("rusty-spider"),
			log:        LogConfig::default(),
			clickhouse: ClickhouseConfig::default(),

			ddc_cap:                     25_000_000,
			ddc_lifetime:                rc::CDuration::from_secs(60 * 60),
			queue_monitor_interval:      rc::CDuration::from_secs(1),
			parser_processor_stack_size: rc::CBytes(1024 * 1024 * 32),

			networking_profile:  rc::NetworkingProfile::default(),
			concurrency_profile: rc::ConcurrencyProfile::default(),
			job_reader:          job_reader::JobReaderConfig::default(),
		}
	}
}

pub fn load() -> Result<()> {
	let cfg_str = fs::read_to_string("./config.yaml")?;
	let mut config = CONFIG.lock().unwrap();

	let mut e = None;
	match serde_yaml::from_str(&cfg_str) {
		Ok(cfg) => *config = cfg,
		Err(err) => e = Some(err),
	}

	if let Ok(seeds) = env::var("CRUSTY_SEEDS") {
		config
			.job_reader
			.seeds
			.extend(seeds.split(',').filter(|v| !v.is_empty()).map(String::from).collect::<Vec<_>>());
	}

	if let Some(err) = e {
		return Err(err.into())
	}
	Ok(())
}