global discount price

assets/i18n/en/main.ftl

@@ -214,6 +214,8 @@ admin-discounts-desc = Set discounted product prices. A discount shows up as a s
 business-discount-desc = A baseline discount for all business accounts (off the regular price). Profiles and negotiated prices apply on top (lowest price wins).
 audience-personal = Personal
 audience-business = Business
+apply-profiles-personal-hint = These profiles lower the public price for all customers.
+apply-profiles-business-hint = These profiles lower the price for all business accounts. Businesses always get the lower of the personal and business price.
 on-sale = On sale
 no-discount = No discount
 discount = Discount

assets/i18n/sk/main.ftl

@@ -214,6 +214,8 @@ admin-discounts-desc = Nastavte zľavnené ceny produktov. Zľava sa v obchode z
 business-discount-desc = Základná zľava pre všetky firemné účty (z bežnej ceny). Profily a dohodnuté ceny sa uplatnia navyše (platí najnižšia cena).
 audience-personal = Osobné
 audience-business = Firemné
+apply-profiles-personal-hint = Tieto profily znížia verejnú cenu pre všetkých zákazníkov.
+apply-profiles-business-hint = Tieto profily znížia cenu pre všetky firemné účty. Firmy vždy dostanú nižšiu z osobnej a firemnej ceny.
 on-sale = V akcii
 no-discount = Bez zľavy
 discount = Zľava

assets/views/admin/catalog/discounts.html

@@ -27,6 +27,33 @@
   </a>
 </div>
 
+<!-- discount profiles applied to this audience -->
+<section class="mt-4 rounded-radius border border-outline bg-surface p-6 dark:border-outline-dark dark:bg-surface-dark-alt">
+  <h2 class="text-lg font-semibold text-on-surface-strong dark:text-on-surface-dark-strong">{{ t(key="discount-profiles", lang=lang | default(value='sk')) }}</h2>
+  <p class="mt-1 text-sm text-on-surface/70 dark:text-on-surface-dark/70">
+    {% if business %}{{ t(key="apply-profiles-business-hint", lang=lang | default(value='sk')) }}{% else %}{{ t(key="apply-profiles-personal-hint", lang=lang | default(value='sk')) }}{% endif %}
+  </p>
+  {% if profiles | length > 0 %}
+  <form method="post" action="/admin/catalog/discounts/profiles?audience={{ audience }}" class="mt-3 space-y-3">
+    {{ ui::csrf_field() }}
+    <div class="grid gap-2 sm:grid-cols-2">
+      {% for profile in profiles %}
+      <label class="flex items-center gap-2 text-sm text-on-surface dark:text-on-surface-dark">
+        <input type="checkbox" name="profile_ids" value="{{ profile.id }}" {% if profile.assigned %}checked{% endif %}>
+        <span>{{ profile.name }} <span class="text-on-surface/60 dark:text-on-surface-dark/60">(−{{ profile.percent }}%, {% if profile.scope_type == "all_except" %}{{ t(key="scope-all-except", lang=lang | default(value='sk')) }}{% else %}{{ t(key="scope-include", lang=lang | default(value='sk')) }}{% endif %})</span></span>
+      </label>
+      {% endfor %}
+    </div>
+    {{ ui::button(label=t(key="save", lang=lang | default(value='sk')), type="submit", size="px-4 py-2 text-sm") }}
+  </form>
+  {% else %}
+  <p class="mt-2 text-sm text-on-surface/70 dark:text-on-surface-dark/70">
+    {{ t(key="admin-no-profiles", lang=lang | default(value='sk')) }}
+    <a href="/admin/catalog/discount-profiles/new" class="text-primary dark:text-primary-dark">{{ t(key="new-profile", lang=lang | default(value='sk')) }}</a>
+  </p>
+  {% endif %}
+</section>
+
 <div class="mt-4 {{ ui::table_wrap_cls() }}">
   {% if products | length > 0 %}
   <table class="{{ ui::table_cls() }}">

migration/src/lib.rs

@@ -39,6 +39,7 @@ mod m20260621_000001_add_sale_price_to_products;
 mod m20260621_000002_account_product_prices;
 mod m20260621_000003_discount_profiles;
 mod m20260621_000004_add_business_sale_price_to_products;
+mod m20260622_000001_audience_discount_profiles;
 pub struct Migrator;
 
 #[async_trait::async_trait]
@@ -82,6 +83,7 @@ impl MigratorTrait for Migrator {
             Box::new(m20260621_000002_account_product_prices::Migration),
             Box::new(m20260621_000003_discount_profiles::Migration),
             Box::new(m20260621_000004_add_business_sale_price_to_products::Migration),
+            Box::new(m20260622_000001_audience_discount_profiles::Migration),
             // inject-above (do not remove this comment)
         ]
     }

migration/src/m20260622_000001_audience_discount_profiles.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> {
+        // Discount profiles applied globally to a whole audience, set on the
+        // discounts page: "personal" lowers the public price for everyone,
+        // "business" lowers the price for all company accounts. Per-company
+        // assignments (account_discount_profiles) still layer on top.
+        create_table(
+            m,
+            "audience_discount_profiles",
+            &[
+                ("id", ColType::PkAuto),
+                ("audience", ColType::String),
+            ],
+            &[("discount_profile", "")],
+        )
+        .await?;
+
+        m.create_index(
+            Index::create()
+                .name("idx_audience_discount_profiles_unique")
+                .table(Alias::new("audience_discount_profiles"))
+                .col(Alias::new("audience"))
+                .col(Alias::new("discount_profile_id"))
+                .unique()
+                .to_owned(),
+        )
+        .await
+    }
+
+    async fn down(&self, m: &SchemaManager) -> Result<(), DbErr> {
+        drop_table(m, "audience_discount_profiles").await
+    }
+}

src/controllers/admin_discounts.rs

@@ -9,20 +9,22 @@
 //!   prices still layer on top (lowest price wins). Both are computed off the
 //!   regular price.
 
-use std::collections::HashMap;
+use std::collections::{HashMap, HashSet};
 
 use axum_extra::extract::cookie::CookieJar;
 use loco_rs::prelude::*;
-use sea_orm::{ActiveModelTrait, EntityTrait, QueryOrder, Set};
+use sea_orm::{
+    ActiveModelTrait, ColumnTrait, EntityTrait, QueryFilter, QueryOrder, Set, TransactionTrait,
+};
 use serde::Deserialize;
 use serde_json::json;
 
 use crate::{
     controllers::i18n::current_lang,
-    models::products,
+    models::{audience_discount_profiles, discount_profiles, products},
     shared::{
         guard,
-        money::{format_price, parse_percent, parse_price_to_cents},
+        money::{format_bp, format_price, parse_percent, parse_price_to_cents},
     },
 };
 
@@ -122,13 +124,79 @@ async fn index(
         .all(&ctx.db)
         .await?;
     let rows: Vec<serde_json::Value> = list.iter().map(list_row).collect();
+
+    // Profiles applied globally to this audience, plus all profiles to choose from.
+    let assigned: HashSet<i32> = audience_discount_profiles::Entity::find()
+        .filter(audience_discount_profiles::Column::Audience.eq(audience))
+        .all(&ctx.db)
+        .await?
+        .into_iter()
+        .map(|a| a.discount_profile_id)
+        .collect();
+    let all_profiles = discount_profiles::Entity::find()
+        .order_by_asc(discount_profiles::Column::Name)
+        .all(&ctx.db)
+        .await?;
+    let profiles: Vec<serde_json::Value> = all_profiles
+        .iter()
+        .map(|p| {
+            json!({
+                "id": p.id,
+                "name": p.name,
+                "percent": format_bp(p.percent_bp),
+                "scope_type": p.scope_type,
+                "assigned": assigned.contains(&p.id),
+            })
+        })
+        .collect();
+
     format::view(
         &v,
         "admin/catalog/discounts.html",
-        json!({ "products": rows, "audience": audience, "lang": current_lang(&jar) }),
+        json!({
+            "products": rows,
+            "profiles": profiles,
+            "audience": audience,
+            "lang": current_lang(&jar),
+        }),
     )
 }
 
+/// Replace the profiles applied to this audience with the submitted checkbox set
+/// (`profile_ids`, a repeated field parsed directly from the body).
+#[debug_handler]
+async fn sync_profiles(
+    auth: auth::JWT,
+    Query(params): Query<HashMap<String, String>>,
+    State(ctx): State<AppContext>,
+    body: String,
+) -> Result<Response> {
+    guard::current_admin(auth, &ctx).await?;
+    let audience = read_audience(&params);
+
+    let profile_ids: Vec<i32> = form_urlencoded::parse(body.as_bytes())
+        .filter(|(k, _)| k == "profile_ids")
+        .filter_map(|(_, value)| value.parse::<i32>().ok())
+        .collect();
+
+    let txn = ctx.db.begin().await?;
+    audience_discount_profiles::Entity::delete_many()
+        .filter(audience_discount_profiles::Column::Audience.eq(audience))
+        .exec(&txn)
+        .await?;
+    for profile_id in profile_ids {
+        audience_discount_profiles::ActiveModel {
+            audience: Set(audience.to_string()),
+            discount_profile_id: Set(profile_id),
+            ..Default::default()
+        }
+        .insert(&txn)
+        .await?;
+    }
+    txn.commit().await?;
+    list_redirect(audience)
+}
+
 /// What to pre-fill the form with: the chosen input mode and the raw values for
 /// each field, so a rejected submit (or a re-edit) shows what the admin had.
 #[derive(Default)]
@@ -284,6 +352,7 @@ async fn remove(
 pub fn routes() -> Routes {
     Routes::new()
         .add("/admin/catalog/discounts", get(index))
+        .add("/admin/catalog/discounts/profiles", post(sync_profiles))
         .add("/admin/catalog/discounts/{id}/edit", get(edit))
         .add("/admin/catalog/discounts/{id}", post(update))
         .add("/admin/catalog/discounts/{id}/remove", post(remove))

src/models/_entities/audience_discount_profiles.rs

@@ -0,0 +1,36 @@
+//! `SeaORM` Entity assigning a discount profile to a whole audience (all
+//! personal viewers or all company accounts). Hand-written to match the
+//! `audience_discount_profiles` migration.
+
+use sea_orm::entity::prelude::*;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Eq, Serialize, Deserialize)]
+#[sea_orm(table_name = "audience_discount_profiles")]
+pub struct Model {
+    pub created_at: DateTimeWithTimeZone,
+    pub updated_at: DateTimeWithTimeZone,
+    #[sea_orm(primary_key)]
+    pub id: i32,
+    /// "personal" or "business".
+    pub audience: String,
+    pub discount_profile_id: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::discount_profiles::Entity",
+        from = "Column::DiscountProfileId",
+        to = "super::discount_profiles::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
+    DiscountProfiles,
+}
+
+impl Related<super::discount_profiles::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::DiscountProfiles.def()
+    }
+}

src/models/_entities/mod.rs

@@ -4,6 +4,7 @@ pub mod prelude;
 
 pub mod account_discount_profiles;
 pub mod account_product_prices;
+pub mod audience_discount_profiles;
 pub mod account_product_resolutions;
 pub mod audit_logs;
 pub mod categories;

src/models/_entities/prelude.rs

@@ -3,6 +3,7 @@
 pub use super::account_discount_profiles::Entity as AccountDiscountProfiles;
 pub use super::account_product_prices::Entity as AccountProductPrices;
 pub use super::account_product_resolutions::Entity as AccountProductResolutions;
+pub use super::audience_discount_profiles::Entity as AudienceDiscountProfiles;
 pub use super::audit_logs::Entity as AuditLogs;
 pub use super::categories::Entity as Categories;
 pub use super::customer_profiles::Entity as CustomerProfiles;

src/models/audience_discount_profiles.rs

@@ -0,0 +1,18 @@
+//! Discount profiles applied globally to an audience ("personal" or "business").
+
+pub use crate::models::_entities::audience_discount_profiles::{
+    ActiveModel, Column, Entity, Model,
+};
+use sea_orm::entity::prelude::*;
+
+pub type AudienceDiscountProfiles = Entity;
+
+#[async_trait::async_trait]
+impl ActiveModelBehavior for ActiveModel {
+    async fn before_save<C>(self, _db: &C, _insert: bool) -> std::result::Result<Self, DbErr>
+    where
+        C: ConnectionTrait,
+    {
+        Ok(self)
+    }
+}

src/models/mod.rs

@@ -9,6 +9,7 @@ pub mod _entities;
 pub mod account_discount_profiles;
 pub mod account_product_prices;
 pub mod account_product_resolutions;
+pub mod audience_discount_profiles;
 pub mod audit_logs;
 pub mod categories;
 pub mod discount_profile_products;

src/shared/pricing.rs

@@ -1,11 +1,16 @@
 //! Single source of truth for the price a given viewer pays for a product, so
 //! the storefront, cart, and placed orders always agree.
 //!
-//! Everyone sees the public price — the lower of the regular price and any
+//! Layers, all combined by "lowest wins":
-//! public sale ([`products::Model::effective_price_cents`]). A logged-in
+//! - **Personal price** (everyone, incl. anonymous): the lower of the regular
-//! **company** account additionally gets their business price: the lowest of the
+//!   price, the public sale (`products.sale_price_cents`), and any discount
-//! public price, any admin-set negotiated price, and the price from their
+//!   profiles assigned to the *personal* audience on the discounts page.
-//! assigned automated discount profiles. **Lowest wins.**
+//! - **Business price** (company accounts): the lower of the personal price, the
+//!   global business baseline (`products.business_sale_price_cents`), discount
+//!   profiles assigned to the *business* audience, the company's own assigned
+//!   profiles, and the company's manually negotiated price.
+//!
+//! A company therefore always pays the lowest of personal vs business.
 
 use std::collections::{HashMap, HashSet};
 
@@ -14,48 +19,42 @@ use sea_orm::{ColumnTrait, EntityTrait, QueryFilter};
 
 use crate::models::{
     account_discount_profiles, account_product_prices, account_product_resolutions,
-    discount_profile_products, discount_profiles, products, users,
+    audience_discount_profiles, discount_profile_products, discount_profiles, products, users,
 };
 use crate::shared::money::apply_discount_bp;
 
 /// `account_type` value that unlocks business pricing.
 const COMPANY: &str = "company";
+const AUDIENCE_PERSONAL: &str = "personal";
+const AUDIENCE_BUSINESS: &str = "business";
 
 /// The resolved price for one product and one viewer (the slim shape templates
 /// and the cart use).
 #[derive(Debug, Clone, Copy)]
 pub struct PricedProduct {
-    /// What the viewer pays, in minor units.
     pub price_cents: i64,
-    /// The regular list price, used as the struck-through reference.
     pub regular_cents: i64,
-    /// True when a business-specific deal (not just a public sale) set the price.
+    /// True when a business-specific deal (not just the personal price) won.
     pub is_business: bool,
 }
 
 impl PricedProduct {
-    /// Whether the final price is below the regular price (render it reduced).
     #[must_use]
     pub fn is_reduced(&self) -> bool {
         self.price_cents < self.regular_cents
     }
 }
 
-/// Full breakdown for one product and one viewer, used by the admin company page
+/// Full breakdown for one product and one viewer, used by the admin company page.
-/// (which needs to show each layer and any collision). The storefront only needs
-/// [`PriceDetail::priced`].
 #[derive(Debug, Clone)]
 pub struct PriceDetail {
     pub regular_cents: i64,
+    /// The personal price (what non-business viewers pay).
     pub public_cents: i64,
     pub manual_cents: Option<i64>,
     pub auto_cents: Option<i64>,
-    /// The profile that produced `auto_cents` (the resolved/only/biggest one).
     pub auto_profile_id: Option<i32>,
-    /// Every assigned profile that covers this product.
     pub covering_profile_ids: Vec<i32>,
-    /// True when more than one profile covers the product and the admin has not
-    /// resolved which wins (a fallback was used).
     pub collision: bool,
     pub price_cents: i64,
     pub is_business: bool,
@@ -86,66 +85,134 @@ impl PriceDetail {
     }
 }
 
-/// The "lowest wins" decision: pick the business price only when it is at or
+/// The "lowest wins" decision: take the business price only when it is at or
-/// below the public price. Pure, so it is unit-tested directly.
+/// below the personal price. Pure, so it is unit-tested directly.
-fn decide(regular_cents: i64, public_cents: i64, business: Option<i64>) -> PricedProduct {
+fn decide(regular_cents: i64, personal_cents: i64, business: Option<i64>) -> PricedProduct {
     match business {
-        Some(b) if b <= public_cents => PricedProduct {
+        Some(b) if b <= personal_cents => PricedProduct {
             price_cents: b,
             regular_cents,
             is_business: true,
         },
         _ => PricedProduct {
-            price_cents: public_cents,
+            price_cents: personal_cents,
             regular_cents,
             is_business: false,
         },
     }
 }
 
-/// Is this viewer a business (company) account?
 fn is_company(user: Option<&users::Model>) -> bool {
     matches!(user, Some(u) if u.account_type == COMPANY)
 }
 
-/// Everything needed to resolve every product's business price for one account,
+/// `min` of `Option`s, ignoring `None`s.
-/// loaded once so listing pages and the cart avoid N+1 queries.
+fn lowest(values: [Option<i64>; 4]) -> Option<i64> {
-struct B2bContext {
+    values.into_iter().flatten().min()
-    manual: HashMap<i32, i64>,
+}
+
+/// A set of discount profiles plus their product membership, with the logic to
+/// price a product against them.
+struct LoadedProfiles {
     profiles: Vec<discount_profiles::Model>,
     membership: HashMap<i32, HashSet<i32>>,
+}
+
+impl LoadedProfiles {
+    fn empty() -> Self {
+        Self {
+            profiles: Vec::new(),
+            membership: HashMap::new(),
+        }
+    }
+
+    /// The best (lowest) price any covering profile produces off the regular
+    /// price, or `None` when no profile covers the product.
+    fn best_price(&self, regular_cents: i64, product_id: i32) -> Option<i64> {
+        let empty = HashSet::new();
+        self.profiles
+            .iter()
+            .filter(|p| p.covers(product_id, self.membership.get(&p.id).unwrap_or(&empty)))
+            .map(|p| apply_discount_bp(regular_cents, p.percent_bp))
+            .min()
+    }
+
+    /// Every profile that covers a product (for the per-company collision UI).
+    fn covering(&self, product_id: i32) -> Vec<&discount_profiles::Model> {
+        let empty = HashSet::new();
+        self.profiles
+            .iter()
+            .filter(|p| p.covers(product_id, self.membership.get(&p.id).unwrap_or(&empty)))
+            .collect()
+    }
+}
+
+async fn load_membership(
+    ctx: &AppContext,
+    profile_ids: &[i32],
+) -> Result<HashMap<i32, HashSet<i32>>> {
+    let mut membership: HashMap<i32, HashSet<i32>> = HashMap::new();
+    if profile_ids.is_empty() {
+        return Ok(membership);
+    }
+    let rows = discount_profile_products::Entity::find()
+        .filter(discount_profile_products::Column::DiscountProfileId.is_in(profile_ids.to_vec()))
+        .all(&ctx.db)
+        .await?;
+    for row in rows {
+        membership
+            .entry(row.discount_profile_id)
+            .or_default()
+            .insert(row.product_id);
+    }
+    Ok(membership)
+}
+
+async fn load_profiles_by_ids(ctx: &AppContext, ids: Vec<i32>) -> Result<LoadedProfiles> {
+    if ids.is_empty() {
+        return Ok(LoadedProfiles::empty());
+    }
+    let profiles = discount_profiles::Entity::find()
+        .filter(discount_profiles::Column::Id.is_in(ids.clone()))
+        .all(&ctx.db)
+        .await?;
+    let membership = load_membership(ctx, &ids).await?;
+    Ok(LoadedProfiles {
+        profiles,
+        membership,
+    })
+}
+
+/// Profiles assigned globally to an audience on the discounts page.
+async fn load_audience(ctx: &AppContext, audience: &str) -> Result<LoadedProfiles> {
+    let ids: Vec<i32> = audience_discount_profiles::Entity::find()
+        .filter(audience_discount_profiles::Column::Audience.eq(audience))
+        .all(&ctx.db)
+        .await?
+        .into_iter()
+        .map(|a| a.discount_profile_id)
+        .collect();
+    load_profiles_by_ids(ctx, ids).await
+}
+
+/// Per-company pricing inputs (manual prices, assigned profiles, resolutions).
+struct B2bContext {
+    manual: HashMap<i32, i64>,
+    profiles: LoadedProfiles,
     resolutions: HashMap<i32, i32>,
 }
 
 async fn load_b2b(ctx: &AppContext, user_id: i32) -> Result<B2bContext> {
     let manual = account_product_prices::Model::map_for_user(&ctx.db, user_id).await?;
 
-    let assigns = account_discount_profiles::Entity::find()
+    let ids: Vec<i32> = account_discount_profiles::Entity::find()
         .filter(account_discount_profiles::Column::UserId.eq(user_id))
         .all(&ctx.db)
-        .await?;
+        .await?
-    let profile_ids: Vec<i32> = assigns.iter().map(|a| a.discount_profile_id).collect();
+        .into_iter()
-
+        .map(|a| a.discount_profile_id)
-    let (profiles, membership) = if profile_ids.is_empty() {
+        .collect();
-        (Vec::new(), HashMap::new())
+    let profiles = load_profiles_by_ids(ctx, ids).await?;
-    } else {
-        let profiles = discount_profiles::Entity::find()
-            .filter(discount_profiles::Column::Id.is_in(profile_ids.clone()))
-            .all(&ctx.db)
-            .await?;
-        let rows = discount_profile_products::Entity::find()
-            .filter(discount_profile_products::Column::DiscountProfileId.is_in(profile_ids))
-            .all(&ctx.db)
-            .await?;
-        let mut membership: HashMap<i32, HashSet<i32>> = HashMap::new();
-        for row in rows {
-            membership
-                .entry(row.discount_profile_id)
-                .or_default()
-                .insert(row.product_id);
-        }
-        (profiles, membership)
-    };
 
     let resolutions = account_product_resolutions::Entity::find()
         .filter(account_product_resolutions::Column::UserId.eq(user_id))
@@ -158,92 +225,117 @@ async fn load_b2b(ctx: &AppContext, user_id: i32) -> Result<B2bContext> {
     Ok(B2bContext {
         manual,
         profiles,
-        membership,
         resolutions,
     })
 }
 
-/// Resolve one product's full price breakdown for `b2b` (None = public viewer).
+/// Everything loaded once per request to price any product for the viewer.
-fn detail_for(product: &products::Model, b2b: Option<&B2bContext>) -> PriceDetail {
+struct PricingCtx {
+    personal: LoadedProfiles,
+    business: LoadedProfiles,
+    b2b: Option<B2bContext>,
+}
+
+/// Resolve the per-company automated price for a product: the single covering
+/// profile, the admin-resolved winner on a collision, or (unresolved) the
+/// biggest discount, flagged.
+fn company_auto(
+    b2b: &B2bContext,
+    regular_cents: i64,
+    product_id: i32,
+) -> (Option<i64>, Option<i32>, bool, Vec<i32>) {
+    let covering = b2b.profiles.covering(product_id);
+    let ids: Vec<i32> = covering.iter().map(|p| p.id).collect();
+    if covering.is_empty() {
+        return (None, None, false, ids);
+    }
+    let (chosen, collision) = if covering.len() == 1 {
+        (covering[0], false)
+    } else {
+        match b2b
+            .resolutions
+            .get(&product_id)
+            .and_then(|rid| covering.iter().find(|p| p.id == *rid).copied())
+        {
+            Some(resolved) => (resolved, false),
+            None => (
+                covering
+                    .iter()
+                    .max_by_key(|p| p.percent_bp)
+                    .copied()
+                    .expect("covering is non-empty"),
+                true,
+            ),
+        }
+    };
+    (
+        Some(apply_discount_bp(regular_cents, chosen.percent_bp)),
+        Some(chosen.id),
+        collision,
+        ids,
+    )
+}
+
+fn detail_for(product: &products::Model, pc: &PricingCtx) -> PriceDetail {
     let regular = product.price_cents;
-    let public = product.effective_price_cents();
+
-    let Some(b2b) = b2b else {
+    // Personal price: public sale + personal-audience profiles, lowest wins.
-        return PriceDetail::public_only(regular, public);
+    let personal_sale = product.effective_price_cents();
+    let personal_profile = pc.personal.best_price(regular, product.id);
+    let personal_effective = personal_profile
+        .map_or(personal_sale, |p| personal_sale.min(p));
+
+    let Some(b2b) = &pc.b2b else {
+        return PriceDetail::public_only(regular, personal_effective);
     };
 
+    // Business candidates (company accounts only).
     let manual = b2b.manual.get(&product.id).copied();
-
+    let (auto_cents, auto_profile_id, collision, covering_ids) =
-    // Which assigned profiles cover this product.
+        company_auto(b2b, regular, product.id);
-    let empty = HashSet::new();
-    let covering: Vec<&discount_profiles::Model> = b2b
-        .profiles
-        .iter()
-        .filter(|p| p.covers(product.id, b2b.membership.get(&p.id).unwrap_or(&empty)))
-        .collect();
-
-    let mut auto_cents = None;
-    let mut auto_profile_id = None;
-    let mut collision = false;
-    if !covering.is_empty() {
-        let chosen = if covering.len() == 1 {
-            covering[0]
-        } else {
-            // Two+ profiles collide: honour the admin's resolution, else fall
-            // back to the biggest discount and flag it for resolving.
-            match b2b
-                .resolutions
-                .get(&product.id)
-                .and_then(|rid| covering.iter().find(|p| p.id == *rid).copied())
-            {
-                Some(resolved) => resolved,
-                None => {
-                    collision = true;
-                    covering
-                        .iter()
-                        .max_by_key(|p| p.percent_bp)
-                        .copied()
-                        .expect("covering is non-empty")
-                }
-            }
-        };
-        auto_profile_id = Some(chosen.id);
-        auto_cents = Some(apply_discount_bp(regular, chosen.percent_bp));
-    }
-
-    // Baseline business discount for all company accounts (set on the discounts
-    // page), alongside the per-company automated and negotiated layers.
     let business_global = product.business_sale_price_cents;
-    let business = [manual, auto_cents, business_global]
+    let business_profile = pc.business.best_price(regular, product.id);
-        .into_iter()
+    let business_best = lowest([manual, auto_cents, business_global, business_profile]);
-        .flatten()
-        .min();
-    let priced = decide(regular, public, business);
 
+    let priced = decide(regular, personal_effective, business_best);
     PriceDetail {
         regular_cents: regular,
-        public_cents: public,
+        public_cents: personal_effective,
         manual_cents: manual,
         auto_cents,
         auto_profile_id,
-        covering_profile_ids: covering.iter().map(|p| p.id).collect(),
+        covering_profile_ids: covering_ids,
         collision,
         price_cents: priced.price_cents,
         is_business: priced.is_business,
     }
 }
 
-/// Full breakdowns for many products for `user`, batching per-account lookups.
+async fn load_pricing_ctx(ctx: &AppContext, user: Option<&users::Model>) -> Result<PricingCtx> {
+    let personal = load_audience(ctx, AUDIENCE_PERSONAL).await?;
+    let (business, b2b) = if is_company(user) {
+        (
+            load_audience(ctx, AUDIENCE_BUSINESS).await?,
+            Some(load_b2b(ctx, user.expect("is_company implies Some").id).await?),
+        )
+    } else {
+        (LoadedProfiles::empty(), None)
+    };
+    Ok(PricingCtx {
+        personal,
+        business,
+        b2b,
+    })
+}
+
+/// Full breakdowns for many products for `user`, batching per-request lookups.
 pub async fn detail_many(
     ctx: &AppContext,
     list: &[products::Model],
     user: Option<&users::Model>,
 ) -> Result<Vec<PriceDetail>> {
-    let b2b = if is_company(user) {
+    let pc = load_pricing_ctx(ctx, user).await?;
-        Some(load_b2b(ctx, user.expect("is_company implies Some").id).await?)
+    Ok(list.iter().map(|p| detail_for(p, &pc)).collect())
-    } else {
-        None
-    };
-    Ok(list.iter().map(|p| detail_for(p, b2b.as_ref())).collect())
 }
 
 /// Price one product for `user` (`None` = anonymous/public).
@@ -256,8 +348,7 @@ pub async fn price_for(
     Ok(detail[0].priced())
 }
 
-/// Price many products for `user`, batching the per-account lookups to avoid
+/// Price many products for `user`, batching the per-request lookups.
-/// N+1 queries on listing pages and the cart.
 pub async fn price_many(
     ctx: &AppContext,
     list: &[products::Model],
@@ -276,10 +367,9 @@ mod tests {
     use crate::shared::money::apply_discount_bp;
 
     #[test]
-    fn public_only() {
+    fn personal_only() {
         let p = decide(10000, 10000, None);
         assert_eq!(p.price_cents, 10000);
-        assert!(!p.is_reduced());
         assert!(!p.is_business);
     }
 
@@ -291,8 +381,8 @@ mod tests {
     }
 
     #[test]
-    fn public_sale_beats_business() {
+    fn personal_beats_business() {
-        // regular 100, public sale 80, business best 90 -> pay 80, not business.
+        // personal already 80 (e.g. personal profile), business best 90 -> 80.
         let p = decide(10000, 8000, Some(9000));
         assert_eq!(p.price_cents, 8000);
         assert!(!p.is_business);
@@ -307,9 +397,8 @@ mod tests {
 
     #[test]
     fn discount_bp_rounds_half_up() {
-        assert_eq!(apply_discount_bp(10000, 500), 9500); // 5%
+        assert_eq!(apply_discount_bp(10000, 500), 9500);
-        assert_eq!(apply_discount_bp(10000, 1500), 8500); // 15%
+        assert_eq!(apply_discount_bp(10000, 1500), 8500);
-        assert_eq!(apply_discount_bp(999, 500), 949); // 49.95 -> 50 off
         assert_eq!(apply_discount_bp(10000, 0), 10000);
     }
 }