feat(postgres): FollowRepository, BlockRepository

crates/adapters/postgres/src/block.rs

@@ -1,2 +1,81 @@
-pub struct PgBlockRepository { _pool: sqlx::PgPool }
-impl PgBlockRepository { pub fn new(pool: sqlx::PgPool) -> Self { Self { _pool: pool } } }
+use async_trait::async_trait;
+use sqlx::PgPool;
+use domain::{errors::DomainError, models::social::Block, ports::BlockRepository, value_objects::UserId};
+
+pub struct PgBlockRepository { pool: PgPool }
+impl PgBlockRepository { pub fn new(pool: PgPool) -> Self { Self { pool } } }
+
+#[async_trait]
+impl BlockRepository for PgBlockRepository {
+    async fn save(&self, b: &Block) -> Result<(), DomainError> {
+        sqlx::query(
+            "INSERT INTO blocks(blocker_id,blocked_id,created_at) VALUES($1,$2,$3) ON CONFLICT DO NOTHING"
+        )
+        .bind(b.blocker_id.as_uuid())
+        .bind(b.blocked_id.as_uuid())
+        .bind(b.created_at)
+        .execute(&self.pool)
+        .await
+        .map_err(|e| DomainError::Internal(e.to_string()))
+        .map(|_| ())
+    }
+
+    async fn delete(&self, blocker_id: &UserId, blocked_id: &UserId) -> Result<(), DomainError> {
+        sqlx::query("DELETE FROM blocks WHERE blocker_id=$1 AND blocked_id=$2")
+            .bind(blocker_id.as_uuid())
+            .bind(blocked_id.as_uuid())
+            .execute(&self.pool)
+            .await
+            .map_err(|e| DomainError::Internal(e.to_string()))
+            .map(|_| ())
+    }
+
+    async fn exists(&self, blocker_id: &UserId, blocked_id: &UserId) -> Result<bool, DomainError> {
+        let count: i64 = sqlx::query_scalar(
+            "SELECT COUNT(*) FROM blocks WHERE blocker_id=$1 AND blocked_id=$2"
+        )
+        .bind(blocker_id.as_uuid())
+        .bind(blocked_id.as_uuid())
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| DomainError::Internal(e.to_string()))?;
+        Ok(count > 0)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use chrono::Utc;
+    use domain::{models::user::User, value_objects::*};
+    use crate::user::PgUserRepository;
+    use domain::ports::UserRepository;
+
+    async fn seed_user(pool: &sqlx::PgPool, username: &str, email: &str) -> User {
+        let repo = PgUserRepository::new(pool.clone());
+        let u = User::new_local(UserId::new(), Username::new(username).unwrap(), Email::new(email).unwrap(), PasswordHash("h".into()));
+        repo.save(&u).await.unwrap(); u
+    }
+
+    #[sqlx::test(migrations = "./migrations")]
+    async fn block_exists(pool: sqlx::PgPool) {
+        let alice = seed_user(&pool, "alice", "alice@ex.com").await;
+        let bob   = seed_user(&pool, "bob",   "bob@ex.com").await;
+        let repo = PgBlockRepository::new(pool);
+        let block = Block { blocker_id: alice.id.clone(), blocked_id: bob.id.clone(), created_at: Utc::now() };
+        repo.save(&block).await.unwrap();
+        assert!(repo.exists(&alice.id, &bob.id).await.unwrap());
+        assert!(!repo.exists(&bob.id, &alice.id).await.unwrap());
+    }
+
+    #[sqlx::test(migrations = "./migrations")]
+    async fn unblock(pool: sqlx::PgPool) {
+        let alice = seed_user(&pool, "alice", "alice@ex.com").await;
+        let bob   = seed_user(&pool, "bob",   "bob@ex.com").await;
+        let repo = PgBlockRepository::new(pool);
+        let block = Block { blocker_id: alice.id.clone(), blocked_id: bob.id.clone(), created_at: Utc::now() };
+        repo.save(&block).await.unwrap();
+        repo.delete(&alice.id, &bob.id).await.unwrap();
+        assert!(!repo.exists(&alice.id, &bob.id).await.unwrap());
+    }
+}