git.rs, render.rs, test_render.rs: updates rendering code and exposes rendering API

src/backend/render.rs

@@ -21,27 +21,27 @@
 use std::{
 	error::Error,
 	fmt::{ self, Display, Formatter },
-	path::Path,
+	io::Write,
 };
 
-use tera::{ Context, Tera };
+use gix::open;
+use tera::Tera;
 
-/* TODO: silt needs to export the HTTP error types */
-#[non_exhaustive]
-pub enum PageError {
-	NotFound,
-}
+use crate::backend::git::ToContext;
 
 #[non_exhaustive]
+#[derive(Debug, Clone)]
 pub enum PageKind {
 	Code,
 	Dashboard,
-	Tickets,
 	Project,
-	RawCode,
 	Repo,
+	RepoSubDir,
+	Settings,
+	Tickets,
 	User,
-	Invalid(PageError),
+	/* TODO: silt exports a generic frontend non-success status trait */
+	Invalid,
 }
 
 impl Display for PageKind {
@@ -51,37 +51,56 @@ impl Display for PageKind {
 		let path = match self {
 			Code => "repo/code.html",
 			Dashboard => "dashboard.html",
+			Project => "project.html",
+			Repo => "repo/repo.html",
+			RepoSubDir => "repo/repo.html",
+			Settings => "user/settings.html",
 			Tickets => "repo/tickets.html",
-			Repo => "repo/code.html",
 			User => "user.html",
-			_ => "",
+			Invalid => todo!("generate error pages based on error type"),
 		};
 
-		write!(f, "./assets/templates/{}", path)
+		write!(f, "{}", path)
 	}
 }
 
+#[derive(Debug, Clone)]
 pub struct Page {
-	kind: PageKind,
-	path: String,
-	branch: Option<String>,
-	commit: Option<String>,
-	tag: Option<String>,
+	pub kind: PageKind,
+	pub path: String,
+	pub branch: Option<String>,
+	pub commit: Option<String>,
+	pub tag: Option<String>,
+	pub user: Option<String>,
 }
 
-/*
 impl Page {
-	pub fn render(&self) -> Result<String, Box<dyn Error>> {
-		let template_dir = self.kind.to_string();
-		let template = String::from_utf8(Path::new(&template_dir)
-			.to_path_buf()
-			.as_mut_os_string()
-			.as_encoded_bytes()
-			.to_vec()
-		)?;
+	pub fn render(
+		&self, mut dest: Box<dyn Write>
+	) -> Result<(), Box<dyn Error>> {
+		/* TODO: replace ./assets/ with the actual templates directory,
+		 * i.e. /usr/local/share/mintee/ */
+		let tera = Tera::new("./assets/templates/**/*")?;
 
-		let tera = Tera::new(&page_dir)?;
-		Ok(tera.render(&template, &ctx)?)
+		use PageKind::*;
+		let ctx = match self.kind {
+			Code => todo!(),
+			Dashboard | Project | Settings | Tickets | User | Invalid => {
+				todo!()
+			},
+			Repo => {
+				open(&self.path)?
+					/*.rev_parse_single("@")?*/
+					.head_tree()?
+					.id()
+					.object()?
+					.to_context()?
+			},
+			RepoSubDir => todo!(),
+		};
+
+		Ok(dest.write_all(
+			tera.render(&self.kind.to_string(), &ctx)?.as_bytes()
+		)?)
 	}
 }
-*/