price_checker/src/parser.rs

pub mod darty;
pub mod fnac;
pub mod du_bruit_dans_la_cuisine;
pub mod ldlc;
pub mod amazon;

use scraper::Html;
use crate::price_result::PriceResult;
use arraygen::Arraygen;
use url::Url;
use anyhow::Result;

pub trait Parser{
	/// Create the parser
	fn new() -> Result<Self> where Self : Sized;
	/// Get the name
	fn name() -> &'static str where Self : Sized;
}

/// Trait needed to get price from a specific website
pub trait PriceParser : Parser{
	/// Indicate if it can parse this URL
	fn can_parse(&self, url : &Url) -> bool;
	/// Parse the html into a price
	fn parse(&self, html : &Html) -> Result<PriceResult>;
}

// @todo Macro générateur liste et tests

#[derive(Arraygen, Debug)]
#[gen_array(pub fn get_price: & dyn PriceParser)]
/// Represent the list of all the parser
pub struct List {
	#[in_array(get_price)]
	darty: darty::Darty,
	#[in_array(get_price)]
	fnac: fnac::Fnac,
	#[in_array(get_price)]
	du_bruit_dans_la_cuisine: du_bruit_dans_la_cuisine::DuBruitDansLaCuisine,
	#[in_array(get_price)]
	ldlc: ldlc::LDLC,
	#[in_array(get_price)]
	amazon: amazon::Amazon,
}

impl List {
	/// Create the list
	pub fn new() -> Result<Self> {
		Ok(List {
			darty: darty::Darty::new()?,
			fnac: fnac::Fnac::new()?,
			du_bruit_dans_la_cuisine: du_bruit_dans_la_cuisine::DuBruitDansLaCuisine::new()?,
			ldlc: ldlc::LDLC::new()?,
			amazon: amazon::Amazon::new()?
		})
	}
}

#[test]
fn test_parser_list() {
	let parser_list = List::new().unwrap();
	assert_eq!(parser_list.get_price().len(), 5);
}