import { model, models, Schema, type InferSchemaType, type Model } from "mongoose";
import { ASSET_KEYS } from "@/shared/assets";

/**
 * Fiyat tablosu (Bölüm 6.6): varlık × tarih × alış/satış (birim başına kuruş). İlk aşamada elle
 * giriş; otomatik kaynaklar Faz 17'de `source` ile eklenir. Gün başına tek kayıt (yeniden girişte
 * güncellenir).
 */
const assetPriceSchema = new Schema(
  {
    householdId: { type: Schema.Types.ObjectId, required: true },
    assetKey: { type: String, enum: ASSET_KEYS, required: true },
    /** "YYYY-MM-DD" (İstanbul). */
    date: { type: String, required: true },
    buyMinor: { type: Number, required: true, min: 0 },
    sellMinor: { type: Number, required: true, min: 0 },
    source: { type: String, enum: ["manual"], default: "manual" },
    createdBy: { type: Schema.Types.ObjectId, required: true },
  },
  { timestamps: true, collection: "assetPrices" },
);

assetPriceSchema.index({ householdId: 1, assetKey: 1, date: -1 }, { unique: true });

export type AssetPrice = InferSchemaType<typeof assetPriceSchema>;

export const AssetPriceModel: Model<AssetPrice> =
  (models.AssetPrice as Model<AssetPrice> | undefined) ??
  model<AssetPrice>("AssetPrice", assetPriceSchema);