Echo Writes Code

content.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
use crate::errors::{ Error, Result };

use axum::response::{ IntoResponse, Response };
use axum::http::header::{ self, HeaderValue };

use chrono::{ DateTime };
use chrono::offset::{ Utc };

use serde::{ Deserialize };
use serde_json::{ self };

use std::fs::{ self };
use std::path::{ Path, PathBuf };

#[derive(Debug)]
pub(crate) struct Provider {
	root: PathBuf,
	metadata: Metadata,
}

impl Provider {
	pub(crate) fn new<P: AsRef<Path>>(root: P, metadata_file: &str) -> Result<Provider> {
		let metadata_json = fs::read_to_string(root.as_ref().join(metadata_file))?;
		let metadata: Metadata = serde_json::from_str(&metadata_json)?;

		Ok(Provider {
			root: root.as_ref().to_path_buf(),
			metadata,
		})
	}

	pub(crate) fn author(&self) -> String {
		self.metadata.author.clone()
	}

	pub(crate) fn contact_email(&self) -> Option<String> {
		self.metadata.contact_email.clone()
	}

	pub(crate) fn site_link(&self) -> String {
		self.metadata.site.link.clone()
	}

	pub(crate) fn site_name(&self) -> String {
		self.metadata.site.name.clone()
	}

	pub(crate)fn site_menu(&self) -> Vec<Link> {
		self.metadata.site.menu.clone()
	}

	pub(crate) fn find_list(&self, list_path: &str) -> Result<List> {
		let maybe_list = self.metadata.lists
			.iter()
			.find(|list| list.slug == list_path);

		let Some(list) = maybe_list else {
			return Err(Error::ListNotFound(list_path.to_string()))
		};

		Ok(list.clone())
	}

	pub(crate) fn find_list_items(&self, list: &List) -> Vec<Page> {
		let mut items = Vec::new();

		for page in &self.metadata.pages {
			if page.slug.starts_with(&list.slug) {
				items.push(page.clone());
			}
		}

		items
	}

	pub(crate) fn find_page(&self, page_path: &str) -> Result<Page> {
		let maybe_page = self.metadata.pages
			.iter()
			.find(|page| page.slug == page_path);

		let Some(page) = maybe_page else {
			return Err(Error::PageNotFound(page_path.to_string()));
		};

		Ok(page.clone())
	}

	pub(crate) fn render_page(&self, page: &Page) -> Result<String> {
		let content_path = self.root.join("content").join(&page.slug).with_extension("md");
		let content = fs::read_to_string(content_path)?;

		let parser = pulldown_cmark::Parser::new(&content);
		let mut rendered = String::new();
		pulldown_cmark::html::push_html(&mut rendered, parser);

		Ok(rendered)
	}
}

#[derive(Clone, Debug, Deserialize)]
pub(crate) struct Metadata {
	pub(crate) author: String,
	pub(crate) contact_email: Option<String>,
	pub(crate) site: Site,
	pub(crate) lists: Vec<List>,
	pub(crate) pages: Vec<Page>,
}

#[derive(Clone, Debug, Deserialize)]
pub(crate) struct Site {
	pub(crate) link: String,
	pub(crate) name: String,
	pub(crate) menu: Vec<Link>,
}

#[derive(Clone, Debug, Deserialize)]
pub(crate) struct List {
	pub(crate) name: String,
	pub(crate) slug: String,
	pub(crate) syndication_id: String,
}

#[derive(Clone, Debug, Deserialize)]
pub(crate) struct Page {
	pub(crate) name: String,
	pub(crate) slug: String,
	pub(crate) summary: String,
	pub(crate) published: DateTime<Utc>,
	pub(crate) updated: DateTime<Utc>,
	pub(crate) syndication_id: String,

	#[serde(default = "syndicated_default")]
	pub(crate) syndicated: bool,
}

fn syndicated_default() -> bool {
	true
}

#[derive(Clone, Debug, Deserialize)]
pub(crate) struct Link {
	pub(crate) link: String,
	pub(crate) name: String,
}

const APPLICATION_ATOM_XML: &str = "application/atom+xml";

pub(crate) struct AtomFeed(pub(crate) String);

impl IntoResponse for AtomFeed {
	fn into_response(self) -> Response {
		let headers = [
			(header::CONTENT_TYPE, HeaderValue::from_static(APPLICATION_ATOM_XML)),
		];

		let body = self.0;

		(headers, body).into_response()
	}
}