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use anyhow::Context;
use chrono::NaiveDate;
use serde::{Deserialize, Serialize};
// stories and their information
// derive from JSON
// process to context for HTML
#[derive(Debug, Deserialize, Serialize)]
pub struct Stories(Vec<Story>);
#[derive(Debug, Deserialize, Serialize)]
struct Story {
title: String,
description: String,
path_to_document: String,
number_of_pages: u16,
language: Language,
last_update: NaiveDate,
}
// see src/works/mod.rs for information of Works trait
impl super::Works for Stories {
// render single pages for every story with the extracted text and a download button
fn render_single_pages(
&self,
tera_instance: &tera::Tera,
template_name: &str,
) -> anyhow::Result<()> {
let mut result = Vec::new();
for story in self.0.iter() {
if story.update_available()? {
let mut context = tera::Context::new();
context.insert("story", story);
context.insert("text", &story.get_text()?);
result.push(std::fs::write(
story.get_html_path().as_str(),
tera_instance.render(format!("{}.html", template_name).as_str(), &context)?,
));
}
}
anyhow::Ok(()).with_context(|| "Failed to render single story pages")
}
}
impl Story {
// check if it's necessary to re-compile the html single page
fn update_available(&self) -> anyhow::Result<bool> {
anyhow::Ok(
// HTML file doesn't exist yet
!std::path::Path::new(&self.get_html_path()).exists()
// pdf document changes
|| std::fs::metadata(format!("docs/stories/{}", &self.path_to_document))?.modified()?
> std::fs::metadata(self.get_html_path())?.modified()?
// base template changes
|| std::fs::metadata("templates/base.html")?.modified()?
> std::fs::metadata(self.get_html_path())?.modified()?
// story template changes
||std::fs::metadata("templates/story.html")?.modified()? > std::fs::metadata(self.get_html_path())?.modified()?, // add error context
)
.with_context(|| format!("Failed to check for update for {}", self.title))
}
// use story document name for the single page
// e.g. mit_gutem_gewissen.pdf -> mit_gutem_gewissen.html
fn get_html_path(&self) -> String {
format!(
"docs/stories/{}.html",
self.path_to_document.replace(".pdf", "")
)
}
// extract text from pdf document
fn get_text(&self) -> anyhow::Result<String> {
let text = std::fs::read_to_string(format!("stories_html/{}.html", self.path_to_document.replace(".pdf", "")))?;
anyhow::Ok(text).with_context(|| format!("Failed to extract text for {}", self.title))
}
}
// language of story content
#[derive(Deserialize, Serialize, Debug)]
pub enum Language {
German,
English,
}
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