using Application.Abstractions.Data;
using Domain.Entities.Stocks;
using Domain.Entities.Stocks.ValueObject;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using SharedKernel;

namespace Infrastructure.StockData;

/// <summary>
/// 일별 마감 시세 수집 (KRX OpenAPI) — stk_bydd_trd(KOSPI) + ksq_bydd_trd(KOSDAQ) 일별매매정보.
/// 기본 18:10 KST 실행(장 마감 15:30 이후 확정), basDd=직전 영업일 전량 수집 →
/// StockDailyPrice upsert (StockID+TradingDate) + Stock.UpdateLastPrice denorm(최근 종가/등락률/시총) 갱신.
/// 마스터 미동기화 코드는 skip (다음 마스터 동기화 후 자연 반영). 미반영(0건)이면 2시간 간격 2회 재시도.
/// ApiKey 미설정 시 로그만 남기고 skip (data.go.kr 배치와 동일 정책).
/// </summary>
internal sealed class KrxDailyPriceSyncService(
    IServiceScopeFactory scopeFactory,
    IHttpClientFactory httpClientFactory,
    IOptions<AppSettings> settings,
    ILogger<KrxDailyPriceSyncService> logger
) : DailyScheduledService(logger)
{
    // (시장, 엔드포인트 경로) — KOSPI/KOSDAQ. KONEX(knx_bydd_trd)·ETF/채권/파생 등은 D1 범위 밖.
    private static readonly (StockMarket Market, string Path)[] Endpoints =
    [
        (StockMarket.KOSPI, "/svc/apis/sto/stk_bydd_trd"),
        (StockMarket.KOSDAQ, "/svc/apis/sto/ksq_bydd_trd")
    ];

    protected override string JobName => "KrxDailyPriceSync";

    protected override TimeOnly TargetTime => ParseTime(settings.Value.KRXCoKr.StockSyncTime, new TimeOnly(18, 10));

    protected override int MaxRetryCount => 2;

    protected override TimeSpan RetryDelay => TimeSpan.FromHours(2);

    protected override async Task<bool> RunOnceAsync(DateOnly todayKst, CancellationToken ct)
    {
        var cfg = settings.Value.KRXCoKr;
        if (string.IsNullOrWhiteSpace(cfg.ApiKey))
        {
            Logger.LogWarning("[{Job}] KRXCoKr:ApiKey 미설정 — 수집 skip", JobName);
            return true;
        }

        using var scope = scopeFactory.CreateScope();
        var db = scope.ServiceProvider.GetRequiredService<IAppDbContext>();
        var client = httpClientFactory.CreateClient(KrxCoKrHttp.ClientName);

        var targetDate = await MarketCalendar.GetPreviousBusinessDayAsync(db, todayKst.AddDays(1), ct);
        var rows = new List<KrxStockParser.DailyPriceItem>();

        foreach (var (market, path) in Endpoints)
        {
            var url = $"{cfg.BaseUrl.TrimEnd('/')}{path}?basDd={targetDate:yyyyMMdd}";
            var json = await KrxCoKrHttp.GetStringWithRetryAsync(client, url, cfg.ApiKey, Logger, ct);
            var parsed = KrxStockParser.ParseDailyPrices(json, market);

            Logger.LogInformation("[{Job}] {Market} basDd={TargetDate} rows={Rows}", JobName, market, targetDate, parsed.Count);
            rows.AddRange(parsed);
        }

        if (rows.Count == 0)
        {
            Logger.LogInformation("[{Job}] basDd={TargetDate} 시세 미반영 (0건)", JobName, targetDate);
            return false;
        }

        var stockByCode = await db.Stock.ToDictionaryAsync(c => c.Code, ct);
        var existingByStockID = await db.StockDailyPrice.Where(c => c.TradingDate == targetDate).ToDictionaryAsync(c => c.StockID, ct);
        var inserted = 0;
        var updated = 0;
        var unknown = 0;

        foreach (var row in rows)
        {
            if (!stockByCode.TryGetValue(row.Code, out var stock))
            {
                // 마스터 미동기화 종목 — 다음 마스터 동기화 후 자연 반영 (DailyPriceSyncService 와 동일 정책)
                unknown++;
                continue;
            }

            if (existingByStockID.TryGetValue(stock.ID, out var price))
            {
                price.Update(row.Open, row.High, row.Low, row.Close, row.Volume, row.TradingValue, row.ChangeAmount, row.ChangeRate, row.MarketCap, row.ListedShares);
                updated++;
            }
            else
            {
                var created = StockDailyPrice.Create(stock.ID, row.TradingDate, row.Open, row.High, row.Low, row.Close, row.Volume, row.TradingValue, row.ChangeAmount, row.ChangeRate, row.MarketCap, row.ListedShares);
                await db.StockDailyPrice.AddAsync(created, ct);
                existingByStockID[stock.ID] = created;
                inserted++;
            }

            stock.UpdateLastPrice(row.TradingDate, row.Close, row.ChangeRate, row.MarketCap);
        }

        await db.SaveChangesAsync(ct);

        Logger.LogInformation("[{Job}] 완료 — basDd={TargetDate}, rows={Rows}, inserted={Inserted}, updated={Updated}, unknownCode={Unknown}",
            JobName, targetDate, rows.Count, inserted, updated, unknown);

        return true;
    }
}