116 lines
3.7 KiB
Rust
116 lines
3.7 KiB
Rust
//! Configeration for how to serve a Dioxus application
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use std::fs::File;
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use std::io::Read;
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use std::path::PathBuf;
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use dioxus_core::Component;
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/// A ServeConfig is used to configure how to serve a Dioxus application. It contains information about how to serve static assets, and what content to render with [`dioxus-ssr`].
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#[derive(Clone)]
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pub struct ServeConfigBuilder<P: Clone> {
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pub(crate) app: Component<P>,
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pub(crate) props: P,
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pub(crate) root_id: Option<&'static str>,
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pub(crate) index_path: Option<&'static str>,
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pub(crate) assets_path: Option<&'static str>,
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}
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impl<P: Clone> ServeConfigBuilder<P> {
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/// Create a new ServeConfigBuilder with the root component and props to render on the server.
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pub fn new(app: Component<P>, props: P) -> Self {
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Self {
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app,
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props,
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root_id: None,
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index_path: None,
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assets_path: None,
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}
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}
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/// Set the path of the index.html file to be served. (defaults to {assets_path}/index.html)
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pub fn index_path(mut self, index_path: &'static str) -> Self {
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self.index_path = Some(index_path);
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self
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}
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/// Set the id of the root element in the index.html file to place the prerendered content into. (defaults to main)
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pub fn root_id(mut self, root_id: &'static str) -> Self {
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self.root_id = Some(root_id);
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self
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}
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/// Set the path of the assets folder generated by the Dioxus CLI. (defaults to dist)
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pub fn assets_path(mut self, assets_path: &'static str) -> Self {
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self.assets_path = Some(assets_path);
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self
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}
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/// Build the ServeConfig
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pub fn build(self) -> ServeConfig<P> {
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let assets_path = self.assets_path.unwrap_or("dist");
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let index_path = self
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.index_path
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.map(PathBuf::from)
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.unwrap_or_else(|| format!("{assets_path}/index.html").into());
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let root_id = self.root_id.unwrap_or("main");
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let index = load_index_html(index_path, root_id);
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ServeConfig {
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app: self.app,
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props: self.props,
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index,
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assets_path,
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}
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}
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}
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fn load_index_html(path: PathBuf, root_id: &'static str) -> IndexHtml {
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let mut file = File::open(path).expect("Failed to find index.html. Make sure the index_path is set correctly and the WASM application has been built.");
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let mut contents = String::new();
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file.read_to_string(&mut contents)
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.expect("Failed to read index.html");
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let (pre_main, post_main) = contents.split_once(&format!("id=\"{root_id}\"")).unwrap_or_else(|| panic!("Failed to find id=\"{root_id}\" in index.html. The id is used to inject the application into the page."));
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let post_main = post_main.split_once('>').unwrap_or_else(|| {
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panic!("Failed to find closing > after id=\"{root_id}\" in index.html.")
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});
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let (pre_main, post_main) = (
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pre_main.to_string() + &format!("id=\"{root_id}\"") + post_main.0 + ">",
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post_main.1.to_string(),
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);
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IndexHtml {
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pre_main,
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post_main,
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}
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}
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#[derive(Clone)]
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pub(crate) struct IndexHtml {
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pub(crate) pre_main: String,
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pub(crate) post_main: String,
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}
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/// Used to configure how to serve a Dioxus application. It contains information about how to serve static assets, and what content to render with [`dioxus-ssr`].
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/// See [`ServeConfigBuilder`] to create a ServeConfig
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#[derive(Clone)]
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pub struct ServeConfig<P: Clone> {
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pub(crate) app: Component<P>,
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pub(crate) props: P,
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pub(crate) index: IndexHtml,
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pub(crate) assets_path: &'static str,
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}
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impl<P: Clone> From<ServeConfigBuilder<P>> for ServeConfig<P> {
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fn from(builder: ServeConfigBuilder<P>) -> Self {
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builder.build()
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}
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}
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