126 lines
3.7 KiB
Rust
126 lines
3.7 KiB
Rust
use crate::{
|
|
authentication::AuthenticatedUser,
|
|
idempotency::{IdempotencyKey, save_response, try_processing},
|
|
routes::{AdminError, AppError, enqueue_delivery_tasks, insert_newsletter_issue},
|
|
startup::AppState,
|
|
templates::{MessageTemplate, NewPostEmailTemplate},
|
|
};
|
|
use anyhow::Context;
|
|
use askama::Template;
|
|
use axum::{
|
|
Extension, Form,
|
|
extract::State,
|
|
response::{Html, IntoResponse, Response},
|
|
};
|
|
use chrono::Utc;
|
|
use sqlx::{Executor, Postgres, Transaction};
|
|
use uuid::Uuid;
|
|
|
|
#[derive(serde::Deserialize)]
|
|
pub struct CreatePostForm {
|
|
title: String,
|
|
content: String,
|
|
idempotency_key: String,
|
|
}
|
|
|
|
fn validate_form(form: &CreatePostForm) -> Result<(), anyhow::Error> {
|
|
if form.title.is_empty() || form.content.is_empty() {
|
|
anyhow::bail!("Fields cannot be empty.")
|
|
} else {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
#[tracing::instrument(name = "Creating a post", skip(connection_pool, form))]
|
|
pub async fn create_post(
|
|
State(AppState {
|
|
connection_pool,
|
|
base_url,
|
|
..
|
|
}): State<AppState>,
|
|
Extension(AuthenticatedUser { user_id, .. }): Extension<AuthenticatedUser>,
|
|
Form(form): Form<CreatePostForm>,
|
|
) -> Result<Response, AppError> {
|
|
validate_form(&form).map_err(AdminError::Publish)?;
|
|
|
|
let idempotency_key: IdempotencyKey = form
|
|
.idempotency_key
|
|
.try_into()
|
|
.map_err(AdminError::Idempotency)?;
|
|
|
|
let mut transaction = match try_processing(&connection_pool, &idempotency_key, user_id).await? {
|
|
crate::idempotency::NextAction::StartProcessing(t) => t,
|
|
crate::idempotency::NextAction::ReturnSavedResponse(response) => {
|
|
return Ok(response);
|
|
}
|
|
};
|
|
|
|
let post_id = insert_post(&mut transaction, &form.title, &form.content, &user_id)
|
|
.await
|
|
.context("Failed to insert new post in the database.")?;
|
|
|
|
let newsletter_uuid = create_newsletter(&mut transaction, &base_url, &form.title, &post_id)
|
|
.await
|
|
.context("Failed to create newsletter.")?;
|
|
|
|
enqueue_delivery_tasks(&mut transaction, newsletter_uuid)
|
|
.await
|
|
.context("Failed to enqueue delivery tasks.")?;
|
|
|
|
let template = MessageTemplate::Success {
|
|
message: "Your new post has been saved. Subscribers will be notified.".into(),
|
|
};
|
|
let response = Html(template.render().unwrap()).into_response();
|
|
let response = save_response(transaction, &idempotency_key, user_id, response)
|
|
.await
|
|
.map_err(AdminError::UnexpectedError)?;
|
|
Ok(response)
|
|
}
|
|
|
|
#[tracing::instrument(
|
|
name = "Saving new post in the database",
|
|
skip(transaction, title, content, author)
|
|
)]
|
|
pub async fn insert_post(
|
|
transaction: &mut Transaction<'static, Postgres>,
|
|
title: &str,
|
|
content: &str,
|
|
author: &Uuid,
|
|
) -> Result<Uuid, sqlx::Error> {
|
|
let post_id = Uuid::new_v4();
|
|
let query = sqlx::query!(
|
|
r#"
|
|
INSERT INTO posts (post_id, author_id, title, content, published_at)
|
|
VALUES ($1, $2, $3, $4, $5)
|
|
"#,
|
|
post_id,
|
|
author,
|
|
title,
|
|
content,
|
|
Utc::now()
|
|
);
|
|
transaction.execute(query).await?;
|
|
Ok(post_id)
|
|
}
|
|
|
|
#[tracing::instrument(
|
|
name = "Creating newsletter for new post",
|
|
skip(transaction, post_title, post_id)
|
|
)]
|
|
pub async fn create_newsletter(
|
|
transaction: &mut Transaction<'static, Postgres>,
|
|
base_url: &str,
|
|
post_title: &str,
|
|
post_id: &Uuid,
|
|
) -> Result<Uuid, sqlx::Error> {
|
|
let template = NewPostEmailTemplate {
|
|
base_url,
|
|
post_title,
|
|
post_id,
|
|
post_excerpt: "",
|
|
};
|
|
let html_content = template.render().unwrap();
|
|
let text_content = template.text_version();
|
|
insert_newsletter_issue(transaction, post_title, &text_content, &html_content).await
|
|
}
|