From 15ad3dfb94f4c1550001a6f02f5763e88cf457c9 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <me@steffo.eu>
Date: Sat, 30 Nov 2024 14:07:23 +0100
Subject: [PATCH] holy cow it works

---
 .gitignore                                    |   2 +-
 .idea/runConfigurations/Backend.xml           |   4 +-
 Caddyfile                                     |   3 +-
 holycow_backend/Cargo.lock                    |   1 +
 holycow_backend/Cargo.toml                    |   1 +
 .../down.sql                                  |   1 +
 .../2024-11-29-145528_readd usernames/up.sql  |   1 +
 .../down.sql                                  |   1 +
 .../up.sql                                    |   1 +
 holycow_backend/src/config.rs                 |   2 +
 holycow_backend/src/database/model.rs         |  63 ++++++--
 holycow_backend/src/database/schema.rs        |   1 +
 holycow_backend/src/main.rs                   |  13 +-
 holycow_backend/src/routes/matches.rs         | 142 +++++++++++++++++-
 holycow_backend/src/routes/results.rs         |  35 ++++-
 holycow_backend/src/telegram/mod.rs           |   1 -
 holycow_backend/src/telegram/webapp.rs        |   8 -
 holycow_frontend/next.config.ts               |   4 +-
 .../src/app/[telegramId]/profile/page.tsx     |   3 +
 .../src/app/[telegramId]/report/page.tsx      |  16 ++
 holycow_frontend/src/app/page.tsx             |  40 +++--
 holycow_frontend/src/app/report/page.tsx      | 107 -------------
 .../src/components/LoadingBox.module.css      |  13 ++
 .../src/components/LoadingBox.tsx             |  19 +++
 holycow_frontend/src/components/ReportBox.tsx |  97 ++++++++++++
 .../src/components/ReportBoxInteractive.tsx   |  56 +++++++
 holycow_frontend/src/holycow.ts               |  12 ++
 holycow_frontend/src/telegram.ts              |   1 +
 28 files changed, 490 insertions(+), 158 deletions(-)
 create mode 100644 holycow_backend/migrations/2024-11-29-145528_readd usernames/down.sql
 create mode 100644 holycow_backend/migrations/2024-11-29-145528_readd usernames/up.sql
 create mode 100644 holycow_backend/migrations/2024-11-29-151839_ununique matchnames/down.sql
 create mode 100644 holycow_backend/migrations/2024-11-29-151839_ununique matchnames/up.sql
 delete mode 100644 holycow_backend/src/telegram/webapp.rs
 create mode 100644 holycow_frontend/src/app/[telegramId]/profile/page.tsx
 create mode 100644 holycow_frontend/src/app/[telegramId]/report/page.tsx
 delete mode 100644 holycow_frontend/src/app/report/page.tsx
 create mode 100644 holycow_frontend/src/components/LoadingBox.module.css
 create mode 100644 holycow_frontend/src/components/LoadingBox.tsx
 create mode 100644 holycow_frontend/src/components/ReportBox.tsx
 create mode 100644 holycow_frontend/src/components/ReportBoxInteractive.tsx
 create mode 100644 holycow_frontend/src/holycow.ts

diff --git a/.gitignore b/.gitignore
index 11ee758..4c49bd7 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1 @@
-.env.local
+.env
diff --git a/.idea/runConfigurations/Backend.xml b/.idea/runConfigurations/Backend.xml
index adc1c75..cfded65 100644
--- a/.idea/runConfigurations/Backend.xml
+++ b/.idea/runConfigurations/Backend.xml
@@ -3,7 +3,9 @@
     <option name="buildProfileId" value="dev" />
     <option name="command" value="run" />
     <option name="workingDirectory" value="file://$PROJECT_DIR$/holycow_backend" />
-    <envs />
+    <envs>
+      <env name="RUST_LOG" value="trace" />
+    </envs>
     <option name="emulateTerminal" value="true" />
     <option name="channel" value="DEFAULT" />
     <option name="requiredFeatures" value="true" />
diff --git a/Caddyfile b/Caddyfile
index aed68ba..829d0d3 100644
--- a/Caddyfile
+++ b/Caddyfile
@@ -1,4 +1,5 @@
 :30002 {
 	reverse_proxy http://localhost:30000
-	reverse_proxy /api http://localhost:30001
+	reverse_proxy /api/* http://localhost:30001
+	reverse_proxy /telegram/webhook http://localhost:30001
 }
diff --git a/holycow_backend/Cargo.lock b/holycow_backend/Cargo.lock
index dffa95a..e7e7847 100644
--- a/holycow_backend/Cargo.lock
+++ b/holycow_backend/Cargo.lock
@@ -664,6 +664,7 @@ dependencies = [
  "micronfig",
  "pretty_env_logger",
  "serde",
+ "serde_json",
  "skillratings",
  "teloxide",
  "tokio",
diff --git a/holycow_backend/Cargo.toml b/holycow_backend/Cargo.toml
index bd9ae20..d873b55 100644
--- a/holycow_backend/Cargo.toml
+++ b/holycow_backend/Cargo.toml
@@ -17,3 +17,4 @@ tokio = { version = "1.41.1", features = ["macros", "rt-multi-thread", "net"] }
 serde = { version = "1.0.215", features = ["derive"] }
 chrono = { version = "0.4.38", features = ["serde"] }
 url = { version = "2.5.4", features = ["serde"] }
+serde_json = "1.0.133"
diff --git a/holycow_backend/migrations/2024-11-29-145528_readd usernames/down.sql b/holycow_backend/migrations/2024-11-29-145528_readd usernames/down.sql
new file mode 100644
index 0000000..2485ea5
--- /dev/null
+++ b/holycow_backend/migrations/2024-11-29-145528_readd usernames/down.sql	
@@ -0,0 +1 @@
+ALTER TABLE players DROP COLUMN IF EXISTS username;
diff --git a/holycow_backend/migrations/2024-11-29-145528_readd usernames/up.sql b/holycow_backend/migrations/2024-11-29-145528_readd usernames/up.sql
new file mode 100644
index 0000000..752e60e
--- /dev/null
+++ b/holycow_backend/migrations/2024-11-29-145528_readd usernames/up.sql	
@@ -0,0 +1 @@
+ALTER TABLE players ADD COLUMN username BPCHAR UNIQUE NOT NULL;
diff --git a/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/down.sql b/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/down.sql
new file mode 100644
index 0000000..04f6698
--- /dev/null
+++ b/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/down.sql	
@@ -0,0 +1 @@
+ALTER TABLE matches ADD CONSTRAINT match_unique_name UNIQUE (name);
diff --git a/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/up.sql b/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/up.sql
new file mode 100644
index 0000000..e129724
--- /dev/null
+++ b/holycow_backend/migrations/2024-11-29-151839_ununique matchnames/up.sql	
@@ -0,0 +1 @@
+ALTER TABLE matches DROP CONSTRAINT match_unique_name;
diff --git a/holycow_backend/src/config.rs b/holycow_backend/src/config.rs
index a66a9d6..5bb1257 100644
--- a/holycow_backend/src/config.rs
+++ b/holycow_backend/src/config.rs
@@ -3,4 +3,6 @@ micronfig::config! {
 	BACKEND_BIND_ADDRESS: String > std::net::SocketAddr,
 	TELEGRAM_API_KEY: String,
 	TELEGRAM_WEBHOOK_URL: String > url::Url,
+	TELEGRAM_NOTIFICATION_CHAT_ID: String > i64,
+	TELEGRAM_NOTIFICATION_TOPIC_ID?: String > i32,
 }
diff --git a/holycow_backend/src/database/model.rs b/holycow_backend/src/database/model.rs
index f22fe98..3f98a01 100644
--- a/holycow_backend/src/database/model.rs
+++ b/holycow_backend/src/database/model.rs
@@ -5,7 +5,7 @@ use diesel::backend::Backend;
 use diesel::deserialize::FromSql;
 use diesel::dsl::insert_into;
 use diesel::pg::Pg;
-use diesel::serialize::ToSql;
+use diesel::serialize::{IsNull, ToSql};
 use diesel::sql_types as sql;
 use diesel::serialize::Output as DieselOutput;
 use diesel::ExpressionMethods;
@@ -32,6 +32,7 @@ pub struct Player {
 	pub wenglin: WengLinRating,
 	pub telegram_id: Option<TelegramId>,
 	pub competitive: bool,
+	pub username: String,
 }
 
 #[derive(Debug, Clone, Insertable, Serialize, Deserialize)]
@@ -39,8 +40,9 @@ pub struct Player {
 #[diesel(check_for_backend(Pg))]
 pub struct PlayerI {
 	pub wenglin: WengLinRating,
-	pub telegram_id: TelegramId,
+	pub telegram_id: Option<TelegramId>,
 	pub competitive: bool,
+	pub username: String,
 }
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq, FromSqlRow, AsExpression, Serialize, Deserialize)]
@@ -71,7 +73,6 @@ pub struct Match {
 #[diesel(table_name = schema::matches)]
 #[diesel(check_for_backend(Pg))]
 pub struct MatchI {
-	pub instant: DateTime<Utc>,
 	pub name: Option<String>,
 	pub player_a_id: i32,
 	pub player_a_wenglin_before: WengLinRating,
@@ -92,8 +93,7 @@ impl FromSql<sql::BigInt, Pg> for TelegramId {
 
 impl FromSql<schema::sql_types::WenglinT, Pg> for WengLinRating {
 	fn from_sql(bytes: <Pg as Backend>::RawValue<'_>) -> diesel::deserialize::Result<Self> {
-		let rating = <f64 as FromSql<sql::Double, Pg>>::from_sql(bytes)?;
-		let uncertainty = <f64 as FromSql<sql::Double, Pg>>::from_sql(bytes)?;
+		let (rating, uncertainty) = <(f64, f64) as FromSql<sql::Record<(sql::Double, sql::Double)>, Pg>>::from_sql(bytes)?;
 		
 		let rating = skillratings::weng_lin::WengLinRating::from((rating, uncertainty));
 		Ok(Self(rating))
@@ -121,10 +121,10 @@ impl ToSql<sql::BigInt, Pg> for TelegramId {
 
 impl ToSql<schema::sql_types::WenglinT, Pg> for WengLinRating {
 	fn to_sql<'b>(&'b self, out: &mut DieselOutput<'b, '_, Pg>) -> diesel::serialize::Result {
-		<f64 as ToSql<sql::Double, Pg>>::to_sql(&self.0.rating, out)?;
-		<f64 as ToSql<sql::Double, Pg>>::to_sql(&self.0.uncertainty, out)?;
-		
-		Ok(diesel::serialize::IsNull::No)
+		diesel::serialize::WriteTuple::<(sql::Double, sql::Double)>::write_tuple(
+			&(self.0.rating, self.0.uncertainty),
+			out
+		)
 	}
 }
 
@@ -138,24 +138,54 @@ impl ToSql<schema::sql_types::OutcomeT, Pg> for Outcome {
 			}
 		)?;
 		
-		Ok(diesel::serialize::IsNull::No)
+		Ok(IsNull::No)
+	}
+}
+
+impl From<Outcome> for skillratings::Outcomes {
+	fn from(value: Outcome) -> Self {
+		match value {
+			Outcome::AWins => Self::WIN,
+			Outcome::BWins => Self::LOSS,
+			Outcome::Tie => Self::DRAW,
+		}
+	}
+}
+
+impl WengLinRating {
+	pub fn human_score(&self) -> i64 {
+		let rating = self.0.rating;
+		let uncertainty = self.0.uncertainty;
+		log::debug!("Getting human score for: {rating:?}±{uncertainty:?}");
+		let uncertain = self.0.rating - self.0.uncertainty;
+		log::trace!("Minimum score is: {uncertain:?}");
+		let multiplied = uncertain * 100.0;
+		log::trace!("Multiplied score is: {multiplied:?}");
+		let floored: f64 = multiplied.floor();
+		log::trace!("Floored score is: {floored:?}");
+		let converted: i64 = floored as i64;
+		log::debug!("Human score for {rating:?}±{uncertainty:?} is {converted:?}");
+		converted
 	}
 }
 
 impl Player {
 	pub fn total(conn: &mut PgConnection) -> QueryResult<i64> {
+		log::debug!("Querying total amount of players...");
 		schema::players::table
 			.select(diesel::dsl::count_star())
 			.get_result::<i64>(conn)
 	}
 	
 	pub fn all(conn: &mut PgConnection) -> QueryResult<Vec<Self>> {
+		log::debug!("Querying all players...");
 		schema::players::table
 			.select(Self::as_select())
 			.get_results::<Self>(conn)
 	}
 	
 	pub fn get_by_id(conn: &mut PgConnection, player_id: i32) -> QueryResult<Option<Self>> {
+		log::debug!("Querying player with id: {player_id:?}");
 		schema::players::table
 			.select(Self::as_select())
 			.filter(schema::players::id.eq(player_id))
@@ -164,6 +194,7 @@ impl Player {
 	}
 	
 	pub fn get_by_telegram_id(conn: &mut PgConnection, telegram_id: TelegramId) -> QueryResult<Option<Self>> {
+		log::debug!("Querying player with telegram id: {telegram_id:?}");
 		schema::players::table
 			.select(Self::as_select())
 			.filter(schema::players::telegram_id.eq(telegram_id))
@@ -178,6 +209,12 @@ impl Player {
 	pub fn won_count(&self, conn: &mut PgConnection) -> QueryResult<i64> {
 		Match::won_by_count(conn, self.id)
 	}
+	
+	pub fn update_wenglin(self, conn: &mut PgConnection, value: &WengLinRating) -> QueryResult<Self> {
+		diesel::update(schema::players::table.find(self.id))
+			.set(schema::players::wenglin.eq(value))
+			.get_result(conn)
+	}
 }
 
 impl Match {
@@ -214,9 +251,9 @@ impl Match {
 }
 
 impl PlayerI {
-	pub fn insert(self, conn: &mut PgConnection) -> QueryResult<Player> {
+	pub fn insert(&self, conn: &mut PgConnection) -> QueryResult<Player> {
 		insert_into(schema::players::table)
-			.values(&[self])
+			.values(self)
 			.get_result::<Player>(conn)
 	}
 }
@@ -224,7 +261,7 @@ impl PlayerI {
 impl MatchI {
 	pub fn insert(self, conn: &mut PgConnection) -> QueryResult<Match> {
 		insert_into(schema::matches::table)
-			.values(&[self])
+			.values(self)
 			.get_result::<Match>(conn)
 	}
 }
diff --git a/holycow_backend/src/database/schema.rs b/holycow_backend/src/database/schema.rs
index 8c18f1f..0836ff4 100644
--- a/holycow_backend/src/database/schema.rs
+++ b/holycow_backend/src/database/schema.rs
@@ -38,6 +38,7 @@ diesel::table! {
         wenglin -> WenglinT,
         telegram_id -> Nullable<Int8>,
         competitive -> Bool,
+        username -> Bpchar,
     }
 }
 
diff --git a/holycow_backend/src/main.rs b/holycow_backend/src/main.rs
index ead9de8..e3cc964 100644
--- a/holycow_backend/src/main.rs
+++ b/holycow_backend/src/main.rs
@@ -1,11 +1,11 @@
 use std::convert::Infallible;
 use std::process::exit;
 use anyhow::Context;
+use axum::Extension;
 use diesel::{Connection, PgConnection};
 use diesel_migrations::MigrationHarness;
-use teloxide::dispatching::{DefaultKey, MessageFilterExt};
+use teloxide::dispatching::DefaultKey;
 use teloxide::error_handlers::LoggingErrorHandler;
-use teloxide::types::Message;
 use teloxide::update_listeners::webhooks::Options;
 
 mod config;
@@ -72,19 +72,22 @@ async fn main() -> anyhow::Result<Infallible> {
         .route("/api/matches/",
             axum::routing::get(routes::matches::get_all)
         )
+        .route("/api/matches/",
+            axum::routing::post(routes::matches::post_match)
+        )
         .nest("/telegram/webhook",
             telegram_router
         )
+        .layer(Extension(bot.clone()))
     ;
     
     log::trace!("Setting up Telegram dispatcher...");
     let mut telegram_dispatcher = teloxide::dispatching::Dispatcher::<teloxide::Bot, anyhow::Error, DefaultKey>::builder(
         bot.clone(),
-        Message::filter_web_app_data()
-            .endpoint(telegram::webapp::process_data)
+        teloxide::dptree::entry()
     )
         .default_handler(|u| async move {
-            log::trace!("Unhandled update: {u:#?}")
+            log::trace!("Unhandled update: {u:?}")
         })
         .build();
     
diff --git a/holycow_backend/src/routes/matches.rs b/holycow_backend/src/routes/matches.rs
index a139095..e33d1ff 100644
--- a/holycow_backend/src/routes/matches.rs
+++ b/holycow_backend/src/routes/matches.rs
@@ -1,8 +1,13 @@
 use axum::http::StatusCode;
-use axum::Json;
+use axum::{Extension, Json};
 use diesel::{Connection, PgConnection};
+use serde::Deserialize;
+use skillratings::weng_lin::WengLinConfig;
+use teloxide::Bot;
+use teloxide::requests::Requester;
+use teloxide::types::{ChatId, MessageId, ThreadId};
 use crate::config;
-use crate::database::model::Match;
+use crate::database::model::{Match, MatchI, Outcome, Player, WengLinRating};
 
 #[axum::debug_handler]
 pub async fn get_all()
@@ -16,3 +21,136 @@ pub async fn get_all()
 	
 	Ok(Json(matches))
 }
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct MatchII {
+	name: Option<String>,
+	player_a: i32,
+	player_b: i32,
+	outcome: Outcome,
+}
+
+fn player_to_text(player: &Player, before: &WengLinRating, after: &WengLinRating) -> String {
+	let name = &player.username;
+	let competitive = &player.competitive;
+	
+	match competitive {
+		false => {
+			format!("{name}")
+		},
+		true => {
+			let before = before.human_score();
+			let after = after.human_score();
+			let change = after - before;
+			
+			format!("<b>{name}</b> <i>({change})</i>")
+		},
+	}
+}
+
+fn match_to_text(r#match: &Match, player_a: &Player, player_b: &Player) -> String {
+	let player_a = player_to_text(player_a, &r#match.player_a_wenglin_before, &r#match.player_a_wenglin_after);
+	let player_b = player_to_text(player_b, &r#match.player_b_wenglin_before, &r#match.player_b_wenglin_after);
+	
+	match r#match.outcome {
+		Outcome::AWins => match &r#match.name {
+			Some(name) => format!("🔵 {player_a} ha trionfato su {player_b} in <b>{name}</b>!"),
+			None => format!("🔵 {player_a} ha trionfato su {player_b}!"),
+		},
+		Outcome::BWins => match &r#match.name {
+			Some(name) => format!("⚪️ {player_a} è stato sconfitto da {player_b} in <b>{name}</b>!"),
+			None => format!("⚪️ {player_a} è stato sconfitto da {player_b}!"),
+		},
+		Outcome::Tie => match &r#match.name {
+			Some(name) => format!("🟠 {player_a} e {player_b} hanno pareggiato in <b>{name}</b>!"),
+			None => format!("🟠 {player_a} e {player_b} hanno pareggiato!"),
+		},
+	}
+}
+
+pub async fn post_match(
+	Extension(bot): Extension<Bot>,
+	Json(matchii): Json<MatchII>,
+)
+	-> Result<Json<Match>, StatusCode>
+{
+	log::debug!("New MatchII just dropped: {matchii:#?}");
+	let name = matchii.name;
+	let outcome = matchii.outcome;
+	
+	log::trace!("Establishing database connection...");
+	let mut conn = PgConnection::establish(config::DATABASE_URL())
+		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
+	
+	log::trace!("Finding player A's info...");
+	let player_a = Player::get_by_id(&mut conn, matchii.player_a)
+		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?
+		.ok_or_else(|| StatusCode::NOT_FOUND)?;
+	let player_a_id = player_a.id;
+	let player_a_wenglin_before = player_a.wenglin.clone();
+	
+	log::trace!("Finding player B's info...");
+	let player_b = Player::get_by_id(&mut conn, matchii.player_b)
+		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?
+		.ok_or_else(|| StatusCode::NOT_FOUND)?;
+	let player_b_id = player_b.id;
+	let player_b_wenglin_before = player_b.wenglin.clone();
+	
+	log::trace!("Calculating rating changes...");
+	let (player_a_wenglin_after, player_b_wenglin_after) = skillratings::weng_lin::weng_lin(
+		&player_a_wenglin_before.0,
+		&player_b_wenglin_before.0,
+		&outcome.into(),
+		&WengLinConfig::default(),
+	);
+	let player_a_wenglin_after = WengLinRating(player_a_wenglin_after);
+	log::trace!("A's new rating is: {player_a_wenglin_after:?}");
+	let player_b_wenglin_after = WengLinRating(player_b_wenglin_after);
+	log::trace!("B's new rating is: {player_b_wenglin_after:?}");
+	
+	log::trace!("Starting database transaction...");
+	let (r#match, player_a, player_b) = conn.transaction(|tx| {
+		log::trace!("Updating A's rating...");
+		let player_a = player_a.update_wenglin(tx, &player_a_wenglin_after)
+			.map_err(|_| diesel::result::Error::RollbackTransaction)?;
+		log::trace!("Updating B's rating...");
+		let player_b = player_b.update_wenglin(tx, &player_b_wenglin_after)
+			.map_err(|_| diesel::result::Error::RollbackTransaction)?;
+		
+		log::trace!("Inserting match...");
+		let matchi = MatchI {
+			name,
+			player_a_id,
+			player_a_wenglin_before,
+			player_a_wenglin_after,
+			player_b_id,
+			player_b_wenglin_before,
+			player_b_wenglin_after,
+			outcome,
+		};
+		let r#match = matchi.insert(tx)
+			.map_err(|_| diesel::result::Error::RollbackTransaction)?;
+		
+		Ok::<(Match, Player, Player), anyhow::Error>((r#match, player_a, player_b))
+	})
+		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
+	
+	log::trace!("Preparing send message future...");
+	
+	let chat = config::TELEGRAM_NOTIFICATION_CHAT_ID();
+	let chat = ChatId(*chat);
+	let mut send_message_future = bot.send_message(chat, match_to_text(&r#match, &player_a, &player_b));
+	
+	let topic = config::TELEGRAM_NOTIFICATION_TOPIC_ID();
+	if let Some(topic) = topic {
+		let topic = MessageId(*topic);
+		let topic = ThreadId(topic);
+		send_message_future.message_thread_id = Some(topic);
+	}
+	
+	log::trace!("Sending message...");
+	let _message = send_message_future.await
+		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
+	
+	Ok(Json(r#match))
+}
diff --git a/holycow_backend/src/routes/results.rs b/holycow_backend/src/routes/results.rs
index 0744752..f3567e8 100644
--- a/holycow_backend/src/routes/results.rs
+++ b/holycow_backend/src/routes/results.rs
@@ -2,14 +2,37 @@ use axum::extract::Path;
 use axum::http::StatusCode;
 use axum::Json;
 use diesel::{Connection, PgConnection};
+use serde::{Deserialize, Serialize};
 use model::Player;
 use crate::config;
 use crate::database::model;
 use crate::database::model::TelegramId;
 
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PlayerO {
+	id: i32,
+	telegram_id: Option<TelegramId>,
+	username: String,
+	human_score: Option<i64>,
+}
+
+impl From<Player> for PlayerO {
+	fn from(value: Player) -> Self {
+		Self {
+			id: value.id,
+			telegram_id: value.telegram_id,
+			username: value.username,
+			human_score: match value.competitive {
+				true => Some(value.wenglin.human_score()),
+				false => None
+			},
+		}
+	}
+}
+
 #[axum::debug_handler]
 pub async fn get_all()
-	-> Result<Json<Vec<Player>>, StatusCode>
+	-> Result<Json<Vec<PlayerO>>, StatusCode>
 {
 	let mut conn = PgConnection::establish(config::DATABASE_URL())
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
@@ -17,14 +40,14 @@ pub async fn get_all()
 	let players = Player::all(&mut conn)
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
 	
-	Ok(Json(players))
+	Ok(Json(players.into_iter().map(Into::into).collect()))
 }
 
 #[axum::debug_handler]
 pub async fn get_by_id(
 	Path(player_id): Path<i32>,
 )
-	-> Result<Json<Player>, StatusCode>
+	-> Result<Json<PlayerO>, StatusCode>
 {
 	let mut conn = PgConnection::establish(config::DATABASE_URL())
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
@@ -33,14 +56,14 @@ pub async fn get_by_id(
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?
 		.ok_or(StatusCode::NOT_FOUND)?;
 	
-	Ok(Json(player))
+	Ok(Json(player.into()))
 }
 
 #[axum::debug_handler]
 pub async fn get_by_telegram_id(
 	Path(telegram_id): Path<TelegramId>,
 )
-	-> Result<Json<Player>, StatusCode>
+	-> Result<Json<PlayerO>, StatusCode>
 {
 	let mut conn = PgConnection::establish(config::DATABASE_URL())
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?;
@@ -49,5 +72,5 @@ pub async fn get_by_telegram_id(
 		.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?
 		.ok_or(StatusCode::NOT_FOUND)?;
 	
-	Ok(Json(player))
+	Ok(Json(player.into()))
 }
diff --git a/holycow_backend/src/telegram/mod.rs b/holycow_backend/src/telegram/mod.rs
index 56b418a..e69de29 100644
--- a/holycow_backend/src/telegram/mod.rs
+++ b/holycow_backend/src/telegram/mod.rs
@@ -1 +0,0 @@
-pub mod webapp;
\ No newline at end of file
diff --git a/holycow_backend/src/telegram/webapp.rs b/holycow_backend/src/telegram/webapp.rs
deleted file mode 100644
index a221885..0000000
--- a/holycow_backend/src/telegram/webapp.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use teloxide::types::WebAppData;
-
-pub async fn process_data(
-	web_app_data: WebAppData,
-) -> anyhow::Result<()> {
-	log::trace!("{web_app_data:#?}");
-	Ok(())
-}
diff --git a/holycow_frontend/next.config.ts b/holycow_frontend/next.config.ts
index 7625ced..cdf4b3c 100644
--- a/holycow_frontend/next.config.ts
+++ b/holycow_frontend/next.config.ts
@@ -1,7 +1,5 @@
 import {NextConfig} from "next"
 
-const nextConfig: NextConfig = {
-	output: "export",
-};
+const nextConfig: NextConfig = {};
 
 export default nextConfig;
diff --git a/holycow_frontend/src/app/[telegramId]/profile/page.tsx b/holycow_frontend/src/app/[telegramId]/profile/page.tsx
new file mode 100644
index 0000000..8e4f877
--- /dev/null
+++ b/holycow_frontend/src/app/[telegramId]/profile/page.tsx
@@ -0,0 +1,3 @@
+export default async function Page() {
+
+}
\ No newline at end of file
diff --git a/holycow_frontend/src/app/[telegramId]/report/page.tsx b/holycow_frontend/src/app/[telegramId]/report/page.tsx
new file mode 100644
index 0000000..ce3ab82
--- /dev/null
+++ b/holycow_frontend/src/app/[telegramId]/report/page.tsx
@@ -0,0 +1,16 @@
+import {ReportBox} from "@/components/ReportBox"
+import {ReportBoxInteractive} from "@/components/ReportBoxInteractive"
+import {PlayerO} from "@/holycow"
+
+export default async function Page({params: {telegramId}}) {
+	const playersResponse = await fetch(`${process.env.BASE_URL}/api/results/`)
+	const players: PlayerO[] = await playersResponse.json()
+	const playerA: PlayerO = players.find(p => p.telegram_id == telegramId)
+	
+	return (
+		<ReportBoxInteractive
+			players={players}
+			playerA={playerA}
+		/>
+	)
+}
\ No newline at end of file
diff --git a/holycow_frontend/src/app/page.tsx b/holycow_frontend/src/app/page.tsx
index a68b446..63c34de 100644
--- a/holycow_frontend/src/app/page.tsx
+++ b/holycow_frontend/src/app/page.tsx
@@ -1,18 +1,38 @@
 "use client";
 
-import { useTelegram } from "@/components/useTelegram";
-import {useEffect, useMemo} from "react"
+import {LoadingBox} from "@/components/LoadingBox"
+import {useTelegram} from "@/components/useTelegram"
+import {useEffect} from "react"
+import {useRouter} from "next/navigation"
 
 export default function Page() {
+	const router = useRouter()
 	const telegram = useTelegram()
-	const telegramData = telegram?.WebApp?.initDataUnsafe
-	const userId = telegramData?.user?.id
-	const userName = telegramData?.user?.first_name
-	const startParam = telegramData?.start_param
+	const data = telegram?.WebApp?.initDataUnsafe
+	const startParam = data?.start_param
 	
-	const resultsData = undefined
-	const resultsError = undefined
+	useEffect(
+		() => {
+			switch(startParam) {
+				case undefined:
+					return
+				case "profile":
+					router.replace(`/${data.user.id}/profile`)
+					return
+				case "report":
+					router.replace(`/${data.user.id}/report`)
+					return
+				default:
+					router.replace(`/error404`)
+					return
+			}
+		},
+		[startParam]
+	)
 	
-	return <main>
-	</main>
+	return (
+		<LoadingBox>
+			Connecting to Telegram...
+		</LoadingBox>
+	)
 }
diff --git a/holycow_frontend/src/app/report/page.tsx b/holycow_frontend/src/app/report/page.tsx
deleted file mode 100644
index a0518d1..0000000
--- a/holycow_frontend/src/app/report/page.tsx
+++ /dev/null
@@ -1,107 +0,0 @@
-"use client";
-
-import { useTelegram } from "@/components/useTelegram";
-import classNames from "classnames";
-import {FormEvent, useCallback, useMemo, useState} from "react"
-
-export default function Page() {
-	const telegram = useTelegram()
-	const telegramData = telegram?.WebApp?.initDataUnsafe
-	const userId = telegramData?.user?.id
-	const userName = telegramData?.user?.first_name ?? "???"
-	
-	const [opponent, setOpponent] = useState("")
-	const [result, setResult] = useState(null)
-	
-	const onSubmit = useCallback(
-		(e: FormEvent) => {
-			telegram?.WebApp?.sendData?.(`${result} ${opponent}`)
-		},
-		[telegram, result, opponent]
-	)
-	
-	const contents = useMemo(() => {
-		return (
-			<div className={"chapter-1"}>
-				<form
-					className={classNames({
-						"panel": true,
-						"box": true,
-						"form-flex": true,
-						"red": result === "L",
-						"yellow": result === "T",
-						"green": result === "W",
-					})}
-					onSubmit={onSubmit}
-				>
-					<h3>
-						Registra risultato
-					</h3>
-					<label>
-						<span>Tu</span>
-						<div>
-							{userName}
-						</div>
-						<span></span>
-					</label>
-					<label>
-						<span>Avversario</span>
-						<select onChange={(e) => setOpponent(e.target.value)} value={opponent}>
-							<option value={""}></option>
-							<option value={"34053709"}>@AleCose</option>
-							<option value={"843330513"}>@Alleander</option>
-							<option value={"200821462"}>@catstolker</option>
-							<option value={"454281712"}>@CookieSin</option>
-							<option value={"524944901"}>@druidsfluid</option>
-							<option value={"48371848"}>@Francesco_Cuoghi</option>
-							<option value={"148374774"}>@GioOmbra</option>
-							<option value={"19611986"}>@GoodBalu</option>
-							<option value={"131057096"}>@Malbyx</option>
-							<option value={"488463576"}>@Mallllco</option>
-							<option value={"33523022"}>@MaxBubblegum</option>
-							<option value={"139079908"}>@SnowyCoder</option>
-							<option value={"165792255"}>@Spaggia</option>
-							<option value={"25167391"}>@Steffo</option>
-							<option value={"890339572"}>@xZefyr</option>
-							<option value={"19097832"}>@zezelda</option>
-						</select>
-						<span></span>
-					</label>
-					<div className={"form-flex-choice"}>
-						<span>Risultato</span>
-						<div>
-							<label>
-								<input type={"radio"} name={"result"} value={"W"} onChange={(e) => setResult(e.target.value)} checked={result === "W"}/> Vittoria
-							</label>
-							<label>
-								<input type={"radio"} name={"result"} value={"T"} onChange={(e) => setResult(e.target.value)} checked={result === "T"}/> Pareggio
-							</label>
-							<label>
-								<input type={"radio"} name={"result"} value={"L"} onChange={(e) => setResult(e.target.value)} checked={result === "L"}/> Sconfitta
-							</label>
-						</div>
-						<span></span>
-					</div>
-					<input
-						type={"submit"}
-						value={"Invia"}
-						className={classNames({
-							// TODO: "fade": result === null || opponent === ""
-							"fade": true,
-						})}
-						disabled={
-							// TODO: result === null || opponent === ""
-							true
-						}
-					/>
-				</form>
-			</div>
-		)
-	}, [onSubmit, userName, opponent, result])
-	
-	return <>
-		<main>
-			{contents}
-		</main>
-	</>
-}
diff --git a/holycow_frontend/src/components/LoadingBox.module.css b/holycow_frontend/src/components/LoadingBox.module.css
new file mode 100644
index 0000000..389cb49
--- /dev/null
+++ b/holycow_frontend/src/components/LoadingBox.module.css
@@ -0,0 +1,13 @@
+@keyframes loading {
+	0% {
+		opacity: 0.25;
+	}
+	
+	100% {
+		opacity: 1.00;
+	}
+}
+
+.loading {
+	animation: loading 0.5s infinite alternate ease-in-out;
+}
diff --git a/holycow_frontend/src/components/LoadingBox.tsx b/holycow_frontend/src/components/LoadingBox.tsx
new file mode 100644
index 0000000..b7d75b1
--- /dev/null
+++ b/holycow_frontend/src/components/LoadingBox.tsx
@@ -0,0 +1,19 @@
+import classNames from "classnames"
+import {ReactNode} from "react"
+import style from "./LoadingBox.module.css"
+
+export type LoadingBoxProps = {
+	children?: ReactNode,
+}
+
+export function LoadingBox({children = "Loading..."}: LoadingBoxProps) {
+	return (
+		<div className={classNames({
+			"panel": true,
+			"box": true,
+			[style.loading]: true
+		})}>
+			{children}
+		</div>
+	)
+}
\ No newline at end of file
diff --git a/holycow_frontend/src/components/ReportBox.tsx b/holycow_frontend/src/components/ReportBox.tsx
new file mode 100644
index 0000000..51e1389
--- /dev/null
+++ b/holycow_frontend/src/components/ReportBox.tsx
@@ -0,0 +1,97 @@
+import {Outcome, PlayerO} from "@/holycow"
+import classNames from "classnames"
+import {FormEvent} from "react"
+
+export type ReportBoxProps = {
+	players: PlayerO[],
+	
+	playerA: PlayerO,
+	playerB?: PlayerO,
+	setPlayerB: (player?: PlayerO) => void,
+	
+	outcome: Outcome,
+	setOutcome: (outcome: Outcome) => void,
+	
+	name: string,
+	setName: (name: string) => void,
+	
+	onSubmit: (e: FormEvent) => void,
+}
+
+// TODO
+export function ReportBox({players, playerA, playerB, setPlayerB, outcome, setOutcome, name, setName, onSubmit}: ReportBoxProps) {
+	return (
+		<form
+			className={classNames({
+				"panel": true,
+				"box": true,
+				"form-flex": true,
+				"green": outcome === Outcome.AWins,
+				"red": outcome === Outcome.BWins,
+				"yellow": outcome === Outcome.Tie,
+			})}
+			onSubmit={e => {
+				e.preventDefault()
+				onSubmit(e)
+			}}
+		>
+			<h3>
+				Registra risultato
+			</h3>
+			<p></p>
+			<label>
+				<span>Tu</span>
+				<div>
+					{playerA.username}
+				</div>
+				<span>{playerA.human_score && `★ ${playerA.human_score}`}</span>
+			</label>
+			<label>
+				<span>Avversario</span>
+				<select onChange={e => setPlayerB(players.find(p => p.id == Number.parseInt(e.target.value)))} value={playerB?.id}>
+					<option value={undefined}></option>
+					{players
+						.filter(player => player.id !== playerA.id)
+						.map(player => (
+							<option key={player.id} value={player.id}>{player.username}</option>
+						))
+					}
+				</select>
+				<span>{playerB && playerB.human_score && `★ ${playerB.human_score}`}</span>
+			</label>
+			<p></p>
+			<div className={"form-flex-choice"}>
+				<span>Risultato</span>
+				<div>
+					<label>
+						<input type={"radio"} name={"result"} value={"AWins"} checked={outcome === Outcome.AWins} onChange={e => e.target.checked && setOutcome(Outcome.AWins)}/> Vittoria
+					</label>
+					<label>
+						<input type={"radio"} name={"result"} value={"Tie"} checked={outcome === Outcome.Tie} onChange={e => e.target.checked && setOutcome(Outcome.Tie)}/> Pareggio
+					</label>
+					<label>
+						<input type={"radio"} name={"result"} value={"BWins"} checked={outcome === Outcome.BWins} onChange={e => e.target.checked && setOutcome(Outcome.BWins)}/> Sconfitta
+					</label>
+				</div>
+				<span></span>
+			</div>
+			<p></p>
+			<label>
+				<span>Titolo sfida</span>
+				<input type={"text"} onChange={e => setName(e.target.value)} value={name}/>
+				<small>(opzionale)</small>
+			</label>
+			<p></p>
+			<input
+				type={"submit"}
+				value={"Invia"}
+				className={classNames({
+					"fade": outcome === undefined || playerB === undefined,
+				})}
+				disabled={
+					outcome === undefined || playerB === undefined
+				}
+			/>
+		</form>
+	)
+}
\ No newline at end of file
diff --git a/holycow_frontend/src/components/ReportBoxInteractive.tsx b/holycow_frontend/src/components/ReportBoxInteractive.tsx
new file mode 100644
index 0000000..0cd5855
--- /dev/null
+++ b/holycow_frontend/src/components/ReportBoxInteractive.tsx
@@ -0,0 +1,56 @@
+"use client";
+
+import {ReportBox} from "@/components/ReportBox"
+import {useTelegram} from "@/components/useTelegram"
+import {Outcome, PlayerO} from "@/holycow"
+import {useCallback, useState} from "react"
+
+export type ReportBoxInteractiveProps = {
+	players: PlayerO[],
+	playerA: PlayerO,
+}
+
+export function ReportBoxInteractive({players, playerA}: ReportBoxInteractiveProps) {
+	const [playerB, setPlayerB] = useState<PlayerO | undefined>(undefined)
+	const [outcome, setOutcome] = useState<Outcome | undefined>(undefined)
+	const [name, setName] = useState<string>("")
+	const [running, setRunning] = useState<boolean>(false)
+	const telegram = useTelegram()
+	
+	const onSubmit = useCallback(
+		() => {
+			if(!telegram) return
+			setRunning(true)
+			const body = JSON.stringify({
+				name: name === "" ? null : name,
+				player_a: playerA.id,
+				player_b: playerB.id,
+				outcome: outcome.toString(),
+			})
+			fetch("/api/matches/", {
+				method: "POST",
+				body,
+				headers: {
+					"Content-Type": "application/json"
+				}
+			}).finally(() => {
+				telegram?.WebApp?.close?.()
+			})
+		},
+		[telegram, name, playerA, playerB, outcome]
+	)
+	
+	return (
+		<ReportBox
+			players={players}
+			playerA={playerA}
+			playerB={playerB}
+			setPlayerB={setPlayerB}
+			outcome={outcome}
+			setOutcome={setOutcome}
+			name={name}
+			setName={setName}
+			onSubmit={running ? () => {} : onSubmit}
+		/>
+	)
+}
\ No newline at end of file
diff --git a/holycow_frontend/src/holycow.ts b/holycow_frontend/src/holycow.ts
new file mode 100644
index 0000000..97ff8da
--- /dev/null
+++ b/holycow_frontend/src/holycow.ts
@@ -0,0 +1,12 @@
+export enum Outcome {
+	AWins = "AWins",
+	BWins = "BWins",
+	Tie = "Tie",
+}
+
+export type PlayerO = {
+	id: number,
+	telegram_id: number,
+	username: string,
+	human_score: null | number,
+}
diff --git a/holycow_frontend/src/telegram.ts b/holycow_frontend/src/telegram.ts
index 6d5c063..fa8a135 100644
--- a/holycow_frontend/src/telegram.ts
+++ b/holycow_frontend/src/telegram.ts
@@ -5,6 +5,7 @@ interface Telegram {
 interface TelegramWebApp {
 	initDataUnsafe?: TelegramWebAppInitData
 	sendData?: (data: string) => void,
+	close?: () => void,
 }
 
 interface TelegramWebAppInitData {