import type { InferInsertModel, InferSelectModel } from "drizzle-orm";
import { integer, sqliteTable, text } from "drizzle-orm/sqlite-core";

// ---------------------------------------------------------------------------
// drinkkaart — one row per user account (1:1 with user)
// ---------------------------------------------------------------------------

export const drinkkaart = sqliteTable("drinkkaart", {
	id: text("id").primaryKey(),
	userId: text("user_id").notNull().unique(),
	balance: integer("balance").notNull().default(0), // in cents
	version: integer("version").notNull().default(0), // optimistic lock counter
	qrSecret: text("qr_secret").notNull(), // CSPRNG 32-byte hex; signs QR tokens
	createdAt: integer("created_at", { mode: "timestamp_ms" }).notNull(),
	updatedAt: integer("updated_at", { mode: "timestamp_ms" }).notNull(),
});

// ---------------------------------------------------------------------------
// drinkkaart_transaction — immutable audit log of deductions and reversals
// ---------------------------------------------------------------------------

export const drinkkaartTransaction = sqliteTable("drinkkaart_transaction", {
	id: text("id").primaryKey(),
	drinkkaartId: text("drinkkaart_id").notNull(),
	userId: text("user_id").notNull(), // denormalized for fast audit queries
	adminId: text("admin_id").notNull(), // FK → user.id (admin who processed it)
	amountCents: integer("amount_cents").notNull(),
	balanceBefore: integer("balance_before").notNull(),
	balanceAfter: integer("balance_after").notNull(),
	type: text("type", { enum: ["deduction", "reversal"] }).notNull(),
	reversedBy: text("reversed_by"), // nullable; id of the reversal transaction
	reverses: text("reverses"), // nullable; id of the original deduction
	note: text("note"),
	createdAt: integer("created_at", { mode: "timestamp_ms" }).notNull(),
});

// ---------------------------------------------------------------------------
// drinkkaart_topup — immutable log of every credited amount
// ---------------------------------------------------------------------------

export const drinkkaartTopup = sqliteTable("drinkkaart_topup", {
	id: text("id").primaryKey(),
	drinkkaartId: text("drinkkaart_id").notNull(),
	userId: text("user_id").notNull(), // denormalized
	amountCents: integer("amount_cents").notNull(),
	balanceBefore: integer("balance_before").notNull(),
	balanceAfter: integer("balance_after").notNull(),
	type: text("type", { enum: ["payment", "admin_credit"] }).notNull(),
	lemonsqueezyOrderId: text("lemonsqueezy_order_id").unique(), // nullable; only for type="payment"
	adminId: text("admin_id"), // nullable; only for type="admin_credit"
	reason: text("reason"),
	paidAt: integer("paid_at", { mode: "timestamp_ms" }).notNull(),
});

// ---------------------------------------------------------------------------
// Inferred Drizzle types
// ---------------------------------------------------------------------------

export type Drinkkaart = InferSelectModel<typeof drinkkaart>;
export type NewDrinkkaart = InferInsertModel<typeof drinkkaart>;
export type DrinkkaartTransaction = InferSelectModel<
	typeof drinkkaartTransaction
>;
export type NewDrinkkaartTransaction = InferInsertModel<
	typeof drinkkaartTransaction
>;
export type DrinkkaartTopup = InferSelectModel<typeof drinkkaartTopup>;
export type NewDrinkkaartTopup = InferInsertModel<typeof drinkkaartTopup>;
