From 627b0067b58782e7f3af7d72ed9502af438ff6d5 Mon Sep 17 00:00:00 2001
From: Felix Ableitner <me@nutomic.com>
Date: Mon, 11 Nov 2024 11:20:28 +0100
Subject: [PATCH] Instance list

---
 Cargo.toml                                    |  2 +-
 src/backend/api/instance.rs                   |  8 +++
 src/backend/api/mod.rs                        |  2 +
 src/backend/database/instance.rs              |  7 ++
 src/frontend/api.rs                           |  4 ++
 src/frontend/app.rs                           |  3 +-
 src/frontend/components/nav.rs                |  5 +-
 .../details.rs}                               |  0
 src/frontend/pages/instance/list.rs           | 65 +++++++++++++++++++
 src/frontend/pages/instance/mod.rs            |  2 +
 src/frontend/pages/mod.rs                     |  2 +-
 11 files changed, 96 insertions(+), 4 deletions(-)
 rename src/frontend/pages/{instance_details.rs => instance/details.rs} (100%)
 create mode 100644 src/frontend/pages/instance/list.rs
 create mode 100644 src/frontend/pages/instance/mod.rs

diff --git a/Cargo.toml b/Cargo.toml
index 9e94a2b..d94c9d9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ ssr = [
   "katex/duktape",
   "leptos/ssr",
   "leptos-use/ssr",
-  "leptos-use/axum"
+  "leptos-use/axum",
 ]
 hydrate = [
   "leptos/hydrate",
diff --git a/src/backend/api/instance.rs b/src/backend/api/instance.rs
index 55d0c30..6e04ec1 100644
--- a/src/backend/api/instance.rs
+++ b/src/backend/api/instance.rs
@@ -42,3 +42,11 @@ pub(super) async fn resolve_instance(
     let instance: DbInstance = ObjectId::from(query.id).dereference(&data).await?;
     Ok(Json(instance))
 }
+
+#[debug_handler]
+pub(in crate::backend::api) async fn list_remote_instances(
+    data: Data<IbisData>,
+) -> MyResult<Json<Vec<DbInstance>>> {
+    let instances = DbInstance::read_remote(&data)?;
+    Ok(Json(instances))
+}
diff --git a/src/backend/api/mod.rs b/src/backend/api/mod.rs
index 4f12863..f3882c2 100644
--- a/src/backend/api/mod.rs
+++ b/src/backend/api/mod.rs
@@ -41,6 +41,7 @@ use axum::{
 use axum_extra::extract::CookieJar;
 use axum_macros::debug_handler;
 use futures::future::try_join_all;
+use instance::list_remote_instances;
 
 pub mod article;
 pub mod instance;
@@ -60,6 +61,7 @@ pub fn api_routes() -> Router<()> {
         .route("/instance", get(get_instance))
         .route("/instance/follow", post(follow_instance))
         .route("/instance/resolve", get(resolve_instance))
+        .route("/instance/list", get(list_remote_instances))
         .route("/search", get(search_article))
         .route("/user", get(get_user))
         .route("/account/register", post(register_user))
diff --git a/src/backend/database/instance.rs b/src/backend/database/instance.rs
index b2e546c..c740e08 100644
--- a/src/backend/database/instance.rs
+++ b/src/backend/database/instance.rs
@@ -119,4 +119,11 @@ impl DbInstance {
             .select(person::all_columns)
             .get_results(conn.deref_mut())?)
     }
+
+    pub fn read_remote(data: &Data<IbisData>) -> MyResult<Vec<DbInstance>> {
+        let mut conn = data.db_pool.get()?;
+        Ok(instance::table
+            .filter(instance::local.eq(false))
+            .get_results(conn.deref_mut())?)
+    }
 }
diff --git a/src/frontend/api.rs b/src/frontend/api.rs
index 12419bf..fc665f3 100644
--- a/src/frontend/api.rs
+++ b/src/frontend/api.rs
@@ -142,6 +142,10 @@ impl ApiClient {
         self.get_query("/api/v1/instance", Some(get_form)).await
     }
 
+    pub async fn list_instances(&self) -> MyResult<Vec<DbInstance>> {
+        self.get_query("/api/v1/instance/list", None::<i32>).await
+    }
+
     pub async fn follow_instance_with_resolve(
         &self,
         follow_instance: &str,
diff --git a/src/frontend/app.rs b/src/frontend/app.rs
index e4f10ba..2ebcaa0 100644
--- a/src/frontend/app.rs
+++ b/src/frontend/app.rs
@@ -15,7 +15,7 @@ use crate::{
             },
             conflicts::Conflicts,
             diff::EditDiff,
-            instance_details::InstanceDetails,
+            instance::{details::InstanceDetails, list::ListInstances},
             login::Login,
             register::Register,
             search::Search,
@@ -120,6 +120,7 @@ pub fn App() -> impl IntoView {
                         <Route path="/article/create" view=CreateArticle />
                         <Route path="/article/list" view=ListArticles />
                         <Route path="/instance/:hostname" view=InstanceDetails />
+                        <Route path="/instance/list" view=ListInstances />
                         <Route path="/user/:name" view=UserProfile />
                         <Route path="/login" view=Login />
                         <Route path="/register" view=Register />
diff --git a/src/frontend/components/nav.rs b/src/frontend/components/nav.rs
index fc8a52d..509d83a 100644
--- a/src/frontend/components/nav.rs
+++ b/src/frontend/components/nav.rs
@@ -47,7 +47,10 @@ pub fn Nav() -> impl IntoView {
                         <A href="/">"Main Page"</A>
                     </li>
                     <li>
-                        <A href="/article/list">"List Articles"</A>
+                        <A href="/instance/list">"Instances"</A>
+                    </li>
+                    <li>
+                        <A href="/article/list">"Articles"</A>
                     </li>
                     <Show when=move || global_state.with(|state| state.my_profile.is_some())>
                         <li>
diff --git a/src/frontend/pages/instance_details.rs b/src/frontend/pages/instance/details.rs
similarity index 100%
rename from src/frontend/pages/instance_details.rs
rename to src/frontend/pages/instance/details.rs
diff --git a/src/frontend/pages/instance/list.rs b/src/frontend/pages/instance/list.rs
new file mode 100644
index 0000000..23b27a8
--- /dev/null
+++ b/src/frontend/pages/instance/list.rs
@@ -0,0 +1,65 @@
+use crate::frontend::app::GlobalState;
+use leptos::*;
+use url::Url;
+
+#[component]
+pub fn ListInstances() -> impl IntoView {
+    let instances = create_resource(
+        move || (),
+        |_| async move { GlobalState::api_client().list_instances().await.unwrap() },
+    );
+
+    let connect_ibis_wiki = create_action(move |_: &()| async move {
+        GlobalState::api_client()
+            .resolve_instance(Url::parse("https://ibis.wiki").unwrap())
+            .await
+            .unwrap();
+        instances.refetch();
+    });
+    let fallback = move || {
+        view! {
+            <div class="flex justify-center h-screen">
+                <button
+                    class="btn btn-primary place-self-center"
+                    on:click=move |_| connect_ibis_wiki.dispatch(())
+                >
+                    Connect with ibis.wiki
+                </button>
+            </div>
+        }
+    };
+
+    view! {
+        <h1 class="text-4xl font-bold font-serif my-4">Instances</h1>
+        <Suspense fallback=|| view! { "Loading..." }>
+            <Show
+                when=move || { !instances.get().unwrap_or_default().is_empty() }
+                fallback=fallback
+            >
+                <ul class="list-none my-4">
+                    {move || {
+                        instances
+                            .get()
+                            .map(|a| {
+                                a.into_iter()
+                                    .map(|i| {
+                                        view! {
+                                            <li>
+                                                <a
+                                                    class="link text-lg"
+                                                    href=format!("/instance/{}", i.domain)
+                                                >
+                                                    {i.domain}
+                                                </a>
+                                            </li>
+                                        }
+                                    })
+                                    .collect::<Vec<_>>()
+                            })
+                    }}
+
+                </ul>
+            </Show>
+        </Suspense>
+    }
+}
diff --git a/src/frontend/pages/instance/mod.rs b/src/frontend/pages/instance/mod.rs
new file mode 100644
index 0000000..bbd0b02
--- /dev/null
+++ b/src/frontend/pages/instance/mod.rs
@@ -0,0 +1,2 @@
+pub(crate) mod details;
+pub(crate) mod list;
diff --git a/src/frontend/pages/mod.rs b/src/frontend/pages/mod.rs
index d92ece4..76e5080 100644
--- a/src/frontend/pages/mod.rs
+++ b/src/frontend/pages/mod.rs
@@ -8,7 +8,7 @@ use leptos_router::use_params_map;
 pub(crate) mod article;
 pub(crate) mod conflicts;
 pub(crate) mod diff;
-pub(crate) mod instance_details;
+pub(crate) mod instance;
 pub(crate) mod login;
 pub(crate) mod register;
 pub(crate) mod search;