personal discounts to businesses done

migration/src/lib.rs

@@ -36,6 +36,7 @@ mod m20260618_000003_account_type;
 mod m20260618_000004_account_ownership;
 mod m20260620_000001_add_totp_to_users;
 mod m20260621_000001_add_sale_price_to_products;
+mod m20260621_000002_account_product_prices;
 pub struct Migrator;
 
 #[async_trait::async_trait]
@@ -76,6 +77,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20260618_000004_account_ownership::Migration),
             Box::new(m20260620_000001_add_totp_to_users::Migration),
             Box::new(m20260621_000001_add_sale_price_to_products::Migration),
+            Box::new(m20260621_000002_account_product_prices::Migration),
             // inject-above (do not remove this comment)
         ]
     }

migration/src/m20260621_000002_account_product_prices.rs

@@ -0,0 +1,40 @@
+use loco_rs::schema::*;
+use sea_orm_migration::prelude::*;
+
+#[derive(DeriveMigrationName)]
+pub struct Migration;
+
+#[async_trait::async_trait]
+impl MigrationTrait for Migration {
+    async fn up(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        // A manually negotiated price (in minor units) for one product, for one
+        // business account — the "personal agreement" layer. `user`/`product`
+        // add the user_id/product_id FKs; the unique index below keeps it to one
+        // row per (account, product).
+        create_table(
+            m,
+            "account_product_prices",
+            &[
+                ("id", ColType::PkAuto),
+                ("price_cents", ColType::BigInteger),
+            ],
+            &[("user", ""), ("product", "")],
+        )
+        .await?;
+
+        m.create_index(
+            Index::create()
+                .name("idx_account_product_prices_user_product_unique")
+                .table(Alias::new("account_product_prices"))
+                .col(Alias::new("user_id"))
+                .col(Alias::new("product_id"))
+                .unique()
+                .to_owned(),
+        )
+        .await
+    }
+
+    async fn down(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        drop_table(m, "account_product_prices").await
+    }
+}