//! Generic economy HTTP boundary.
//!
//! Exposes [`crate::services::economy`] over the same game-scoped active-profile
//! resolution every other Core route uses ([`GameId`] header → active profile →
//! club). The caller (a game host) never supplies a club id; Core maps the game
//! to its authoritative club, so there is no cross-club economy access. Every
//! op is a single durable SQLite transaction in the service layer.
//!
//! This surface is deliberately game-neutral: no currency names, pack ids, or
//! wire semantics — those live in the game host/adapter.

use axum::{extract::State, Json};
use serde::{Deserialize, Serialize};

use crate::{
    app::AppState,
    error::AppResult,
    extractors::GameId,
    services::{club as club_svc, economy, economy::GrantedItem, profile as profile_svc},
};

/// Resolve the game-scoped active profile's club id.
async fn resolve_club(state: &AppState, game: &GameId) -> AppResult<String> {
    let profile = profile_svc::get_active_profile(&state.pool, game.as_str()).await?;
    let club = club_svc::get_club_by_profile(&state.pool, &profile.id).await?;
    Ok(club.id)
}

#[derive(Serialize)]
pub struct BalanceResponse {
    pub balance: i64,
}

/// `GET /economy/balance` — the club's currency balance.
pub async fn get_balance(
    State(state): State<AppState>,
    game: GameId,
) -> AppResult<Json<BalanceResponse>> {
    let club = resolve_club(&state, &game).await?;
    let balance = economy::balance(&state.pool, &club).await?;
    Ok(Json(BalanceResponse { balance }))
}

/// `GET /economy/entitlements` — the club's unconsumed entitlements.
pub async fn get_entitlements(
    State(state): State<AppState>,
    game: GameId,
) -> AppResult<Json<Vec<economy::Entitlement>>> {
    let club = resolve_club(&state, &game).await?;
    Ok(Json(
        economy::list_unopened_entitlements(&state.pool, &club).await?,
    ))
}

#[derive(Deserialize)]
pub struct PurchaseEntitlementRequest {
    pub cost: i64,
    pub definition_id: String,
}

/// `POST /economy/purchase-entitlement` — atomic debit + grant.
pub async fn post_purchase_entitlement(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<PurchaseEntitlementRequest>,
) -> AppResult<Json<economy::PurchaseReceipt>> {
    let club = resolve_club(&state, &game).await?;
    Ok(Json(
        economy::purchase_entitlement(&state.pool, &club, req.cost, &req.definition_id).await?,
    ))
}

#[derive(Deserialize)]
pub struct RedeemEntitlementRequest {
    pub entitlement_id: String,
    pub items: Vec<GrantedItem>,
}

#[derive(Serialize)]
pub struct RedeemEntitlementResponse {
    pub definition_id: String,
}

/// `POST /economy/redeem-entitlement` — atomic consume-once + add items.
pub async fn post_redeem_entitlement(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<RedeemEntitlementRequest>,
) -> AppResult<Json<RedeemEntitlementResponse>> {
    let club = resolve_club(&state, &game).await?;
    let definition_id =
        economy::redeem_entitlement(&state.pool, &club, &req.entitlement_id, &req.items).await?;
    Ok(Json(RedeemEntitlementResponse { definition_id }))
}

#[derive(Deserialize)]
pub struct SellItemRequest {
    pub item_id: String,
    pub price: i64,
}

/// `POST /economy/sell-item` — atomic remove + credit.
pub async fn post_sell_item(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<SellItemRequest>,
) -> AppResult<Json<BalanceResponse>> {
    let club = resolve_club(&state, &game).await?;
    let balance = economy::sell_item(&state.pool, &club, &req.item_id, req.price).await?;
    Ok(Json(BalanceResponse { balance }))
}

#[derive(Deserialize)]
pub struct GrantRewardRequest {
    pub amount: i64,
}

/// `POST /economy/grant-reward` — atomic credit.
pub async fn post_grant_reward(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<GrantRewardRequest>,
) -> AppResult<Json<BalanceResponse>> {
    let club = resolve_club(&state, &game).await?;
    let balance = economy::grant_reward(&state.pool, &club, req.amount).await?;
    Ok(Json(BalanceResponse { balance }))
}

#[derive(Deserialize)]
pub struct PurchaseItemRequest {
    pub cost: i64,
    pub item_id: String,
    pub card_id: String,
}

/// `POST /economy/purchase-item` — atomic debit + mint item.
pub async fn post_purchase_item(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<PurchaseItemRequest>,
) -> AppResult<Json<BalanceResponse>> {
    let club = resolve_club(&state, &game).await?;
    let balance =
        economy::purchase_item(&state.pool, &club, req.cost, &req.item_id, &req.card_id).await?;
    Ok(Json(BalanceResponse { balance }))
}

#[derive(Deserialize)]
pub struct PurchaseItemsRequest {
    pub cost: i64,
    pub items: Vec<GrantedItem>,
}

/// `POST /economy/purchase-items` — atomic debit + mint several items.
pub async fn post_purchase_items(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<PurchaseItemsRequest>,
) -> AppResult<Json<BalanceResponse>> {
    let club = resolve_club(&state, &game).await?;
    let balance = economy::purchase_items(&state.pool, &club, req.cost, &req.items).await?;
    Ok(Json(BalanceResponse { balance }))
}

/// `POST /economy/settle-sale` request.
///
/// This is the ONE economy route that names clubs explicitly, and it has to: a
/// market sale has two sides, and the module's active-profile resolution can only
/// ever describe one. Both are optional and default to the game-scoped active
/// club, so the single-player case stays as terse as every other route:
///
///   * `seller_club_id` omitted -> the active club is the seller (it listed the
///     item), which is the production shape.
///   * `buyer_club_id` omitted -> the counterparty is OUTSIDE the modelled
///     economy: no balance is debited and the item leaves the inventory. It does
///     NOT silently fall back to the active club, because that would settle a sale
///     between a club and itself.
#[derive(Deserialize)]
pub struct SettleSaleRequest {
    /// The authoritative owned-item instance changing hands.
    pub item_id: String,
    /// What the buyer pays. The fee is withheld from this, never added to it.
    pub gross: i64,
    /// Withheld from the seller and destroyed. The RATE is a per-game policy the
    /// caller owns; Core only checks `0 <= fee <= gross`.
    pub fee: i64,
    #[serde(default)]
    pub seller_club_id: Option<String>,
    #[serde(default)]
    pub buyer_club_id: Option<String>,
}

/// `POST /economy/settle-sale` — atomically debit the buyer, transfer the existing
/// item, credit the seller net of the fee, and destroy the fee.
pub async fn post_settle_sale(
    State(state): State<AppState>,
    game: GameId,
    Json(req): Json<SettleSaleRequest>,
) -> AppResult<Json<economy::SaleReceipt>> {
    let seller = match req.seller_club_id {
        Some(id) => id,
        None => resolve_club(&state, &game).await?,
    };
    let buyer = match req.buyer_club_id.as_deref() {
        Some(id) => economy::SaleBuyer::Club(id),
        None => economy::SaleBuyer::Outside,
    };
    let receipt = economy::settle_sale(
        &state.pool,
        &req.item_id,
        &seller,
        buyer,
        economy::SaleTerms {
            gross: req.gross,
            fee: req.fee,
        },
    )
    .await?;
    Ok(Json(receipt))
}