use super::selectors::CHAPTER_SELECTOR;
use crate::{
Chapter,
Error,
Result,
Series,
};
use kuchiki::traits::*;
use std::path::Path;
use url::Url;
#[allow(clippy::filter_map)]
pub(super) fn scrape_from_html<'a>(
html: &kuchiki::NodeRef,
series: &'a Series,
) -> Result<Vec<Chapter<'a>>> {
CHAPTER_SELECTOR
.filter(html.descendants().elements())
.map(|link| {
let url = url_from_element(&link)?;
let id = f64::from(id_from_url(&url)?);
let volume = None;
Ok(Chapter {
id,
series,
volume,
url,
})
})
.collect::<Result<Vec<_>>>()
}
fn id_from_url(url: &Url) -> Result<u16> {
Path::new(url.path())
.file_name()
.ok_or_else(|| Error::Scraping("chapter ID not found".to_owned()))?
.to_str()
.ok_or_else(|| {
Error::Scraping("invalid UTF-8 in chapter ID".to_owned())
})?
.parse::<u16>()
.map_err(|err| Error::Scraping(format!("invalid chapter ID: {}", err)))
}
#[allow(clippy::filter_next)]
fn url_from_element(element: &kuchiki::ElementData) -> Result<Url> {
let attributes = element.attributes.borrow();
let url = attributes
.get("href")
.ok_or_else(|| Error::Scraping("chapter URL not found".to_owned()))?;
Url::parse(url).map_err(|err| {
Error::Scraping(format!("invalid chapter URL `{}`: {}", url, err))
})
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::Pagination;
use std::path::PathBuf;
#[test]
fn test_scraping() {
let series = Series {
title: "Example".to_owned(),
url: Url::parse("http://example.com/").unwrap(),
pagination: Pagination::new(0, 0),
};
let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
path.push("testdata/webtoonscan.com/series.html");
let html = std::fs::read_to_string(&path).expect("test data");
let document = kuchiki::parse_html().one(html);
let chapters = scrape_from_html(&document, &series).unwrap();
assert_eq!(chapters.len(), 79);
}
}