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use crate::error::JournalError;
use std::path::Path;
use tera::{Context, Tera};
const NEW_ENTRY: &str = r#"[[!meta title="{{ title }}"]]
[[!meta date="{{ date }}"]]
This is the default template.
"#;
pub struct Templates {
tera: Tera,
}
impl Templates {
pub fn new(dirname: &Path) -> Result<Self, JournalError> {
let glob = format!("{}/.config/templates/*", dirname.display());
let mut tera = Tera::new(&glob).expect("Tera::new");
add_default_template(&mut tera, "new_entry", NEW_ENTRY);
Ok(Self { tera })
}
pub fn new_draft(&self, context: &Context) -> Result<String, JournalError> {
self.render("new_entry", &context)
}
fn render(&self, name: &str, context: &Context) -> Result<String, JournalError> {
match self.tera.render(name, &context) {
Ok(s) => Ok(s),
Err(e) => match e.kind {
tera::ErrorKind::TemplateNotFound(x) => Err(JournalError::TemplateNotFound(x)),
_ => Err(JournalError::TemplateRender(name.to_string(), e)),
},
}
}
}
fn add_default_template(tera: &mut Tera, name: &str, template: &str) {
let context = Context::new();
if let Err(err) = tera.render(name, &context) {
if let tera::ErrorKind::TemplateNotFound(_) = err.kind {
tera.add_raw_template(name, template)
.expect("Tera::add_raw_template");
}
}
}
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