bookyard-core 0.1.0

Core configuration and catalog model for Bookyard.
Documentation 
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use std::{fs, path::Path};

use serde::{Deserialize, Serialize};

use crate::{BookEngine, BookyardError, Result, error::io_error};

#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct DetectedBookSource {
    pub engine: BookEngine,
    pub title: Option<String>,
}

pub fn detect_book_source(path: impl AsRef<Path>) -> Result<DetectedBookSource> {
    let path = path.as_ref();
    let book_toml = path.join("book.toml");
    if !book_toml.exists() {
        return Err(BookyardError::UnsupportedBookSource(path.to_path_buf()));
    }
    let raw = fs::read_to_string(&book_toml).map_err(|source| io_error(&book_toml, source))?;
    let value = toml::from_str::<MdBookToml>(&raw).ok();
    let title = value.and_then(|v| v.book.and_then(|book| book.title));
    Ok(DetectedBookSource {
        engine: BookEngine::MdBook,
        title,
    })
}

#[derive(Debug, Deserialize)]
struct MdBookToml {
    book: Option<MdBookSection>,
}

#[derive(Debug, Deserialize)]
struct MdBookSection {
    title: Option<String>,
}