Rewrite site backend in Rust (#178)

* add shell.nix changes for Rust #176

* set up base crate layout

* add first set of dependencies

* start adding basic app modules

* start html templates

* serve index page

* add contact and feeds pages

* add resume rendering support

* resume cleanups

* get signalboost page working

* rewrite config to be in dhall

* more work

* basic generic post loading

* more tests

* initial blog index support

* fix routing?

* render blogposts

* X-Clacks-Overhead

* split blog handlers into blog.rs

* gallery index

* gallery posts

* fix hashtags

* remove instantpage (it messes up the metrics)

* talk support + prometheus

* Create rust.yml

* Update rust.yml

* Update codeql-analysis.yml

* add jsonfeed library

* jsonfeed support

* rss/atom

* go mod tidy

* atom: add posted date

* rss: add publishing date

* nix: build rust program

* rip out go code

* rip out go templates

* prepare for serving in docker

* create kubernetes deployment

* create automagic deployment

* build docker images on non-master

* more fixes

* fix timestamps

* fix RSS/Atom/JSONFeed validation errors

* add go vanity import redirecting

* templates/header: remove this

* atom feed: fixes

* fix?

* fix??

* fix rust tests

* Update rust.yml

* automatically show snow during the winter

* fix dates

* show commit link in footer

* sitemap support

* fix compiler warning

* start basic patreon client

* integrate kankyo

* fix patreon client

* add patrons page

* remove this

* handle patron errors better

* fix build

* clean up deploy

* sort envvars for deploy

* remove deps.nix

* shell.nix: remove go

* update README

* fix envvars for tests

* nice

* blog: add rewrite in rust post

* blog/site-update: more words

1 files changed, 204 insertions, 0 deletions

diff --git a/lib/jsonfeed/src/builder.rs b/lib/jsonfeed/src/builder.rs
new file mode 100644
index 0000000..f17740f
--- /dev/null
+++ b/lib/jsonfeed/src/builder.rs
@@ -0,0 +1,204 @@
+use std::default::Default;
+
+use errors::*;
+use feed::{Feed, Author, Attachment};
+use item::{Content, Item};
+
+/// Feed Builder
+///
+/// This is used to programmatically build up a Feed object,
+/// which can be serialized later into a JSON string
+pub struct Builder(Feed);
+
+impl Builder {
+    pub fn new() -> Builder {
+        Builder(Feed::default())
+    }
+
+    pub fn title<I: Into<String>>(mut self, t: I) -> Builder {
+        self.0.title = t.into();
+        self
+    }
+
+    pub fn home_page_url<I: Into<String>>(mut self, url: I) -> Builder {
+        self.0.home_page_url = Some(url.into());
+        self
+    }
+
+    pub fn feed_url<I: Into<String>>(mut self, url: I) -> Builder {
+        self.0.feed_url = Some(url.into());
+        self
+    }
+
+    pub fn description<I: Into<String>>(mut self, desc: I) -> Builder {
+        self.0.description = Some(desc.into());
+        self
+    }
+
+    pub fn user_comment<I: Into<String>>(mut self, cmt: I) -> Builder {
+        self.0.user_comment = Some(cmt.into());
+        self
+    }
+
+    pub fn next_url<I: Into<String>>(mut self, url: I) -> Builder {
+        self.0.next_url = Some(url.into());
+        self
+    }
+
+    pub fn icon<I: Into<String>>(mut self, url: I) -> Builder {
+        self.0.icon = Some(url.into());
+        self
+    }
+
+    pub fn favicon<I: Into<String>>(mut self, url: I) -> Builder {
+        self.0.favicon = Some(url.into());
+        self
+    }
+
+    pub fn author(mut self, author: Author) -> Builder {
+        self.0.author = Some(author);
+        self
+    }
+
+    pub fn expired(mut self) -> Builder {
+        self.0.expired = Some(true);
+        self
+    }
+
+    pub fn item(mut self, item: Item) -> Builder {
+        self.0.items.push(item);
+        self
+    }
+
+    pub fn build(self) -> Feed {
+        self.0
+    }
+}
+
+/// Builder object for an item in a feed
+pub struct ItemBuilder {
+    pub id: Option<String>,
+    pub url: Option<String>,
+    pub external_url: Option<String>,
+    pub title: Option<String>,
+    pub content: Option<Content>,
+    pub summary: Option<String>,
+    pub image: Option<String>,
+    pub banner_image: Option<String>,
+    pub date_published: Option<String>,
+    pub date_modified: Option<String>,
+    pub author: Option<Author>,
+    pub tags: Option<Vec<String>>,
+    pub attachments: Option<Vec<Attachment>>,
+}
+
+impl ItemBuilder {
+    pub fn new() -> ItemBuilder {
+        ItemBuilder {
+            id: None,
+            url: None,
+            external_url: None,
+            title: None,
+            content: None,
+            summary: None,
+            image: None,
+            banner_image: None,
+            date_published: None,
+            date_modified: None,
+            author: None,
+            tags: None,
+            attachments: None,
+        }
+    }
+
+    pub fn title<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.title = Some(i.into());
+        self
+    }
+
+    pub fn image<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.image = Some(i.into());
+        self
+    }
+
+    pub fn id<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.id = Some(i.into());
+        self
+    }
+
+    pub fn url<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.url = Some(i.into());
+        self
+    }
+
+    pub fn external_url<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.external_url = Some(i.into());
+        self
+    }
+
+    pub fn date_modified<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.date_modified = Some(i.into());
+        self
+    }
+
+    pub fn date_published<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        self.date_published = Some(i.into());
+        self
+    }
+
+    pub fn tags(mut self, tags: Vec<String>) -> ItemBuilder {
+        self.tags = Some(tags);
+        self
+    }
+
+    pub fn author(mut self, who: Author) -> ItemBuilder {
+        self.author = Some(who);
+        self
+    }
+
+    pub fn content_html<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        match self.content {
+            Some(Content::Text(t)) => {
+                self.content = Some(Content::Both(i.into(), t));
+            },
+            _ => {
+                self.content = Some(Content::Html(i.into()));
+            }
+        }
+        self
+    }
+
+    pub fn content_text<I: Into<String>>(mut self, i: I) -> ItemBuilder {
+        match self.content {
+            Some(Content::Html(s)) => {
+                self.content = Some(Content::Both(s, i.into()));
+            },
+            _ => {
+                self.content = Some(Content::Text(i.into()));
+            },
+        }
+        self
+    }
+
+    pub fn build(self) -> Result<Item> {
+        if self.id.is_none() || self.content.is_none() {
+            return Err("missing field 'id' or 'content_*'".into());
+        }
+        Ok(Item {
+            id: self.id.unwrap(),
+            url: self.url,
+            external_url: self.external_url,
+            title: self.title,
+            content: self.content.unwrap(),
+            summary: self.summary,
+            image: self.image,
+            banner_image: self.banner_image,
+            date_published: self.date_published,
+            date_modified: self.date_modified,
+            author: self.author,
+            tags: self.tags,
+            attachments: self.attachments
+        })
+    }
+}
+