use super::PriceParser;
use crate::PriceResult;
use scraper::{Selector, Html};
use url::Url;
use anyhow::{Result, anyhow};

#[derive(Debug)]
/// Parser for the darty website
pub struct LDLC {
	price_selector: Selector,
	name_selector: Selector,
}

impl PriceParser for LDLC {
	fn new() -> Result<Self> {
		Ok(LDLC {
			price_selector: Selector::parse(r#".price"#).unwrap(),
			name_selector: Selector::parse(r#".title-1"#).unwrap(),
		})
	}

	fn can_parse(&self, url : &Url) -> bool {
		url.host_str().unwrap_or("") == "www.ldlc.com"
	}

	fn parse(&self, html : &Html) -> Result<PriceResult> {
		// Get price
		let price_element = html.select(&self.price_selector).nth(4).ok_or(anyhow!("No price element"))?;
		let mut price_text_it = price_element.text();
		let price_ent : u32 = price_text_it.next().unwrap_or("0").trim_end_matches('€').parse()?;
		let price_dec : u32 = price_text_it.next().unwrap_or("0").parse()?;
		let price = price_ent as f64 + (price_dec as f64) / 100.;

		// Get name
		let name_element = html.select(&self.name_selector).next().ok_or(anyhow!("No name element"))?;
		let name = name_element.text().next().unwrap_or("").trim();

		Ok(PriceResult {
			name: name.to_owned(),
			product: "High-tech".to_owned(),
			price
		})
	}
}

#[test]
fn test_parser_du_bruit_dans_la_cuisine() {
	let parser = LDLC::new().unwrap();
	assert!(parser.can_parse(&Url::parse("https://www.ldlc.com/fiche/PB00335410.html").unwrap()));
	assert!(parser.can_parse(&Url::parse("http://www.ldlc.com/fiche/PB00335410.html").unwrap()));
	assert!(parser.can_parse(&Url::parse("https://www.ldlv.com").unwrap()) == false);
}