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

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

impl Parser for Fnac {
	fn new() -> Result<Self> {
		Ok(Fnac {
			price_selector: Selector::parse(r#".f-priceBox-price.checked"#).unwrap(),
			name_selector: Selector::parse(r#".f-productHeader-Title"#).unwrap(),
			product_selector: Selector::parse(r#".f-productHeader-subTitleLink"#).unwrap(),
			search_selector: Selector::parse(r#".Article-title"#).unwrap(),
		})
	}

	fn name(&self) -> &'static str {
		"Fnac"
	}
}

impl PriceParser for Fnac {
	fn can_parse(&self, url: &Url) -> bool {
		url.host_str().unwrap_or("").ends_with("fnac.com")
	}

	fn parse_price(&self, html: &Html) -> Result<PriceResult> {
		// Get price
		let price_element = html.select(&self.price_selector).next().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").trim_start_matches('€').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().replace('\n', "-");

		// Get product
		let family_element = html.select(&self.product_selector).next().ok_or(anyhow!("No product element"))?;
		let family = family_element.text().next().unwrap_or("").trim().replace('\n', "-");

		Ok(PriceResult {
			name: name.to_owned(),
			product: family.to_owned(),
			price,
		})
	}
}

impl SearchParser for Fnac {
	fn search_url(&self, name: &str) -> Url {
		Url::parse(&format!(
			"https://www.fnac.com/SearchResult/ResultList.aspx?Search={}",
			name.replace(' ', "+")
		))
		.unwrap()
	}
	fn search(&self, html: &Html) -> Result<Option<Url>> {
		if let Some(search_element) = html.select(&self.search_selector).next() {
			let path_url = search_element.value().attr("href").ok_or(anyhow!("No link element"))?.trim_end_matches("#omnsearchpos=1");
			Ok(Option::Some(Url::parse(path_url)?))
		} else {
			Ok(None)
		}
	}
}

#[test]
fn test_parser_fnac() {
	let fnac_parser = Fnac::new().unwrap();
	assert!(
		fnac_parser.can_parse(&Url::parse("https://www.fnac.com/Apple-iPhone-XS-64-Go-5-8-Argent/a12849718/w-4?CtoPid=488371").unwrap())
	);
	assert!(fnac_parser.can_parse(&Url::parse("http://www.fnac.com/Apple-iPhone-XS-64-Go-5-8-Argent/a12849718/w-4?CtoPid=488371").unwrap()));
	assert!(fnac_parser.can_parse(&Url::parse("https://www.fnace.com").unwrap()) == false);
}