User profile and admin privileges

src/routes/users.rs

@@ -0,0 +1,82 @@
+use crate::{
+    authentication::Role,
+    domain::{PostEntry, UserEntry},
+    routes::{AppError, not_found_html},
+    startup::AppState,
+    templates::{HtmlTemplate, UserTemplate},
+};
+use anyhow::Context;
+use axum::{
+    extract::{Path, State},
+    response::{IntoResponse, Response},
+};
+use sqlx::PgPool;
+use uuid::Uuid;
+
+#[derive(serde::Deserialize)]
+pub struct ProfilePath {
+    username: String,
+}
+
+#[tracing::instrument(name = "Fetching user data", skip(connection_pool))]
+pub async fn user_profile(
+    State(AppState {
+        connection_pool, ..
+    }): State<AppState>,
+    Path(ProfilePath { username }): Path<ProfilePath>,
+) -> Result<Response, AppError> {
+    match fetch_user_data(&connection_pool, &username)
+        .await
+        .context("Failed to fetch user data.")?
+    {
+        Some(user) => {
+            let posts = fetch_user_posts(&connection_pool, &user.user_id)
+                .await
+                .context("Could not fetch user posts.")?;
+            let template = HtmlTemplate(UserTemplate { user, posts });
+            Ok(template.into_response())
+        }
+        None => {
+            tracing::error!(username = %username, "user not found");
+            Ok(not_found_html().into_response())
+        }
+    }
+}
+
+#[tracing::instrument(name = "Fetching user profile", skip_all)]
+async fn fetch_user_data(
+    connection_pool: &PgPool,
+    username: &str,
+) -> Result<Option<UserEntry>, sqlx::Error> {
+    sqlx::query_as!(
+        UserEntry,
+        r#"
+        SELECT user_id, username, full_name, role as "role: Role", member_since, bio
+        FROM users
+        WHERE username = $1
+        "#,
+        username
+    )
+    .fetch_optional(connection_pool)
+    .await
+}
+
+#[tracing::instrument(name = "Fetching user posts", skip_all)]
+async fn fetch_user_posts(
+    connection_pool: &PgPool,
+    user_id: &Uuid,
+) -> Result<Vec<PostEntry>, sqlx::Error> {
+    sqlx::query_as!(
+        PostEntry,
+        r#"
+        SELECT u.username as author, p.post_id, p.title, p.content, p.published_at
+        FROM posts p
+        INNER JOIN users u ON p.author_id = u.user_id
+        WHERE p.author_id = $1
+        ORDER BY p.published_at DESC
+        "#,
+        user_id
+    )
+    .fetch_all(connection_pool)
+    .await
+}