v1.0: First production version

This first version allows login of pre-existing users, creation and update of truths
by admins, vote on the truths by users, their display as well as a simple graph
for the vote results.
Everything persisting in a SQLite database.

src/truth.rs

@@ -0,0 +1,112 @@
+use rocket::form::Form;
+use rocket::http::CookieJar;
+use rocket::response::Redirect;
+
+use rocket_db_pools::{sqlx, Connection};
+
+use pulldown_cmark::{Parser, Options};
+use sqlx::Row;
+use crate::{auth, database};
+
+#[derive(FromForm)]
+pub struct TruthUpdateForm {
+    truth_raw_text: String,
+    truth_author: u8,
+}
+
+#[post("/<week>/edit/<truth_number>", data="<form>")]
+pub async fn edit_truth(week: u8, truth_number: u8, form: Form<TruthUpdateForm>,
+                        mut db: Connection<database::Db>, cookies: &CookieJar<'_>) -> Redirect {
+    let user = auth::get_user(week, &mut db, cookies).await;
+    if !user.is_admin {
+        cookies.add(("toast_error", "Vous n'avez pas la permission de changer la vérité."));
+        return Redirect::to(uri!("/"));
+    }
+
+    let mut options = Options::empty();
+    options.insert(Options::ENABLE_STRIKETHROUGH);
+    options.insert(Options::ENABLE_FOOTNOTES);
+    options.insert(Options::ENABLE_MATH);
+    options.insert(Options::ENABLE_TABLES);
+    let markdown_parser = Parser::new_ext(form.truth_raw_text.as_str(), options);
+
+    let mut rendered_markdown = String::new();
+    pulldown_cmark::html::push_html(&mut rendered_markdown, markdown_parser);
+
+    match sqlx::query("UPDATE Truths SET raw_text = $1, rendered_text = $2, author_id = $3 WHERE week == $4 AND number == $5;")
+        .bind(&form.truth_raw_text)
+        .bind(rendered_markdown)
+        .bind(form.truth_author)
+        .bind(week)
+        .bind(truth_number)
+        .fetch_optional(&mut **db)
+        .await {
+        Ok(_) => {
+            debug!("Truth successfully updated")
+        }
+        Err(error) => {
+            error!("Error while updating truth {truth_number} from week {week} : {error}");
+            cookies.add(("toast_error", "Il y a eu un problème lors du changement de la vérité"));
+        }
+    };
+
+    Redirect::to(uri!("/"))
+}
+
+#[post("/<week>/new", data="<form>")]
+pub async fn create_truth(week: u8, form: Form<TruthUpdateForm>,
+                          mut db: Connection<database::Db>, cookies: &CookieJar<'_>) -> Redirect {
+    let user = auth::get_user(week, &mut db, cookies).await;
+    if !user.is_admin {
+        cookies.add(("toast_error", "Vous n'avez pas la permission d'ajouter de vérité."));
+        return Redirect::to(uri!("/"));
+    }
+
+    let truth_number: u8 = match sqlx::query("SELECT max(number) from Truths WHERE week == $1;")
+        .bind(week)
+        .fetch_one(&mut **db)
+        .await {
+        Ok(row) => match row.try_get::<u8, usize>(0).ok() {
+            Some(max_truth_number) => max_truth_number+1,
+            None => 0
+        },
+        Err(_) => 1 // If we can't fetch a row, this is the first one.
+    };
+
+    if truth_number == 0 {
+        error!("Error while getting max truth number.");
+        cookies.add(("toast_error", "Erreur lors de l'ajout de la vérité..."));
+        return Redirect::to(uri!("/"));
+    }
+
+    let mut options = Options::empty();
+    options.insert(Options::ENABLE_STRIKETHROUGH);
+    options.insert(Options::ENABLE_FOOTNOTES);
+    options.insert(Options::ENABLE_MATH);
+    options.insert(Options::ENABLE_TABLES);
+    let markdown_parser = Parser::new_ext(form.truth_raw_text.as_str(), options);
+
+    let mut rendered_markdown = String::new();
+    pulldown_cmark::html::push_html(&mut rendered_markdown, markdown_parser);
+
+    match sqlx::query("INSERT INTO Truths (week, number, rendered_text, raw_text, author_id) VALUES ($1, $2, $3, $4, $5);")
+        .bind(week)
+        .bind(truth_number)
+        .bind(rendered_markdown)
+        .bind(&form.truth_raw_text)
+        .bind(form.truth_author)
+        .fetch_optional(&mut **db)
+        .await {
+            Ok(_) => {
+                debug!("Truth successfully updated")
+            }
+            Err(error) => {
+                error!("Error while creating truth {truth_number} from week {week} : {error}");
+                cookies.add(("toast_error", "Il y a eu un problème lors du changement de la vérité"));
+            }
+    };
+
+    debug!("Truth was successfully added");
+
+    Redirect::to(uri!("/"))
+}