using Application.Abstractions.Data;
using Domain.Entities.Stocks;
using Microsoft.EntityFrameworkCore;

namespace Infrastructure.StockData;

/// <summary>
/// SeibroCorpActionSyncService 의 DB 반영 로직 분리 (테스트 가능) — HTTP 없이 파서 출력(fixture)으로 검증한다
/// (SeibroSupplyImport 패턴 미러링). 일곱 엔티티(총회·안건·상호변경·대금·단주·CB대상·CB행사) upsert / window delete+insert 담당.
/// </summary>
public static class SeibroCorpActionImport
{
    /// <summary>
    /// getGmeetInfo 결과를 GeneralMeeting 로 upsert — UQ (IssucoCustno, RgtStdDt, GmetKacd).
    /// rows 는 (회사, 기준일) per 콜 결과. 같은 콜 내 자연키 중복은 첫 행 채택.
    /// </summary>
    public static async Task<(int Inserted, int Updated)> UpsertGeneralMeetingsAsync(IAppDbContext db, IReadOnlyList<SeibroGmeetParser.Row> rows, CancellationToken ct)
    {
        if (rows.Count == 0)
        {
            return (0, 0);
        }

        var custnos = rows.Select(c => c.IssucoCustno).Distinct().ToList();
        var stdDts = rows.Select(c => c.RgtStdDt).Distinct().ToList();
        var existing = await db.GeneralMeeting.Where(c => custnos.Contains(c.IssucoCustno) && stdDts.Contains(c.RgtStdDt)).ToListAsync(ct);
        var byKey = existing.ToDictionary(c => (c.IssucoCustno, c.RgtStdDt, c.GmetKacd));
        var seen = new HashSet<(int, DateOnly, string)>();
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            var key = (row.IssucoCustno, row.RgtStdDt, row.GmetKacd);
            if (!seen.Add(key))
            {
                continue;
            }

            if (byKey.TryGetValue(key, out var entity))
            {
                var was = entity.UpdatedAt;
                entity.Update(row.IssuinNo, row.RgtRsnDetailSortCd, row.RostCloseBeginDt, row.RostCloseExpryDt, row.GmetOmeetYn, row.GmetPlaceTpcd, row.CouncilDterminPubnDt, row.GmetPlace, row.StkBuyreqRlYn, row.GmetDt, row.GmetTtm, row.NotcDlineDt, row.DferYn, row.EvoteYn, row.IsElectronicSecurity);
                if (entity.UpdatedAt != was)
                {
                    updated++;
                }
            }
            else
            {
                var created = GeneralMeeting.Create(row.IssucoCustno, row.IssuinNo, row.GmetKacd, row.RgtRsnDetailSortCd, row.RostCloseBeginDt, row.RostCloseExpryDt, row.GmetOmeetYn, row.GmetPlaceTpcd, row.CouncilDterminPubnDt, row.GmetPlace, row.StkBuyreqRlYn, row.RgtStdDt, row.GmetDt, row.GmetTtm, row.NotcDlineDt, row.DferYn, row.EvoteYn, row.IsElectronicSecurity);
                await db.GeneralMeeting.AddAsync(created, ct);
                byKey[key] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);
        return (inserted, updated);
    }

    /// <summary>
    /// getGmeetMeasureInfo 결과를 MeetingAgenda 로 upsert — UQ (IssucoCustno, RgtStdDt, AgendaSeq).
    /// rows 는 (회사, 기준일) per 콜 결과(여러 안건).
    /// </summary>
    public static async Task<(int Inserted, int Updated)> UpsertMeetingAgendasAsync(IAppDbContext db, IReadOnlyList<SeibroGmeetMeasureParser.Row> rows, CancellationToken ct)
    {
        if (rows.Count == 0)
        {
            return (0, 0);
        }

        var custnos = rows.Select(c => c.IssucoCustno).Distinct().ToList();
        var stdDts = rows.Select(c => c.RgtStdDt).Distinct().ToList();
        var existing = await db.MeetingAgenda.Where(c => custnos.Contains(c.IssucoCustno) && stdDts.Contains(c.RgtStdDt)).ToListAsync(ct);
        var byKey = existing.ToDictionary(c => (c.IssucoCustno, c.RgtStdDt, c.AgendaSeq));
        var seen = new HashSet<(int, DateOnly, int)>();
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            var key = (row.IssucoCustno, row.RgtStdDt, row.AgendaSeq);
            if (!seen.Add(key))
            {
                continue;
            }

            if (byKey.TryGetValue(key, out var entity))
            {
                var was = entity.UpdatedAt;
                entity.Update(row.IssuinNo, row.GmetDt, row.GmetKacd, row.AgendaXpresNo, row.AgendaSchSeqo, row.AgendaNo, row.DtailAgendaNo, row.AgendaNm, row.EngAgendaNm, row.DtailAgendaNm, row.DtailEngAgendaNm, row.VoteMannTpcd, row.GmetResultTpcd);
                if (entity.UpdatedAt != was)
                {
                    updated++;
                }
            }
            else
            {
                var created = MeetingAgenda.Create(row.IssucoCustno, row.IssuinNo, row.RgtStdDt, row.GmetDt, row.GmetKacd, row.AgendaSeq, row.AgendaXpresNo, row.AgendaSchSeqo, row.AgendaNo, row.DtailAgendaNo, row.AgendaNm, row.EngAgendaNm, row.DtailAgendaNm, row.DtailEngAgendaNm, row.VoteMannTpcd, row.GmetResultTpcd);
                await db.MeetingAgenda.AddAsync(created, ct);
                byKey[key] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);
        return (inserted, updated);
    }

    /// <summary>
    /// getFmnmAltInfo 결과를 CorpNameChange 로 upsert — UQ (IssucoCustno, RgtStdDt).
    /// rows 는 (회사, 기준일) per 콜 결과(보통 1행).
    /// </summary>
    public static async Task<(int Inserted, int Updated)> UpsertNameChangesAsync(IAppDbContext db, IReadOnlyList<SeibroFmnmAltParser.Row> rows, CancellationToken ct)
    {
        if (rows.Count == 0)
        {
            return (0, 0);
        }

        var custnos = rows.Select(c => c.IssucoCustno).Distinct().ToList();
        var stdDts = rows.Select(c => c.RgtStdDt).Distinct().ToList();
        var existing = await db.CorpNameChange.Where(c => custnos.Contains(c.IssucoCustno) && stdDts.Contains(c.RgtStdDt)).ToListAsync(ct);
        var byKey = existing.ToDictionary(c => (c.IssucoCustno, c.RgtStdDt));
        var seen = new HashSet<(int, DateOnly)>();
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            var key = (row.IssucoCustno, row.RgtStdDt);
            if (!seen.Add(key))
            {
                continue;
            }

            if (byKey.TryGetValue(key, out var entity))
            {
                var was = entity.UpdatedAt;
                entity.Update(row.FmnmBfaltKorNm, row.FmnmBfaltEngNm, row.FmnmAltKorNm, row.FmnmAltEngNm, row.MixusCirclBeginDt, row.MixusCirclExpryDt, row.UniCirclDt);
                if (entity.UpdatedAt != was)
                {
                    updated++;
                }
            }
            else
            {
                var created = CorpNameChange.Create(row.IssucoCustno, row.RgtStdDt, row.FmnmBfaltKorNm, row.FmnmBfaltEngNm, row.FmnmAltKorNm, row.FmnmAltEngNm, row.MixusCirclBeginDt, row.MixusCirclExpryDt, row.UniCirclDt);
                await db.CorpNameChange.AddAsync(created, ct);
                byKey[key] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);
        return (inserted, updated);
    }

    /// <summary>
    /// getCostPaySchedul 결과를 PaymentSchedule 로 window(지급일+구분) delete+insert 반영.
    /// 날짜 스윕(TH1_PAY_TERM_BEGIN_DT × PAY_COST_TPCD)이라 자연키 대신 (지급일, 구분) 창 재구성. 응답에 없는 지급일/구분은 요청값 스탬핑.
    /// 같은 창 내 중복 (회사, ISIN, 권리기준일) 방어.
    /// </summary>
    public static async Task<(int Inserted, int Deleted)> ReplacePaymentScheduleWindowAsync(IAppDbContext db, DateOnly payDate, string payCostTpcd, IReadOnlyList<SeibroCostPaySchedulParser.Row> rows, CancellationToken ct)
    {
        var deleted = await db.PaymentSchedule.Where(c => c.Th1PayTermBeginDt == payDate && c.PayCostTpcd == payCostTpcd).ExecuteDeleteAsync(ct);

        var seen = new HashSet<(int, string, DateOnly?)>();
        var inserted = 0;

        foreach (var row in rows)
        {
            var key = (row.IssucoCustno, row.Isin, row.RgtStdDt);
            if (!seen.Add(key))
            {
                continue;
            }

            var created = PaymentSchedule.Create(row.IssucoCustno, row.Isin, row.KorSecnNm, row.SecnKacd, row.RgtStdDt, row.RgtRacdNm, row.RgtRsnDetailSortCd, payCostTpcd, payDate);
            await db.PaymentSchedule.AddAsync(created, ct);
            inserted++;
        }

        await db.SaveChangesAsync(ct);
        return (inserted, deleted);
    }

    /// <summary>
    /// getOddLotInfo 결과를 OddLotPayment 로 upsert — UQ (IssucoCustno, PayDate, RgtStdDt).
    /// 응답에 없는 회사번호·지급일은 요청값을 스탬핑. rows 는 (회사, 지급일) per 콜 결과.
    /// </summary>
    public static async Task<(int Inserted, int Updated)> UpsertOddLotsAsync(IAppDbContext db, int issucoCustno, DateOnly payDate, IReadOnlyList<SeibroOddLotParser.Row> rows, CancellationToken ct)
    {
        if (rows.Count == 0)
        {
            return (0, 0);
        }

        var existing = await db.OddLotPayment.Where(c => c.IssucoCustno == issucoCustno && c.PayDate == payDate).ToListAsync(ct);
        var byKey = existing.ToDictionary(c => c.RgtStdDt);
        var seen = new HashSet<DateOnly>();
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            if (!seen.Add(row.RgtStdDt))
            {
                continue;
            }

            if (byKey.TryGetValue(row.RgtStdDt, out var entity))
            {
                var was = entity.UpdatedAt;
                entity.Update(row.RgtRacd, row.RgtRacdNm, row.RgtRsnDetailSortCd, row.EstmStdTpcd, row.EstmStdDt, row.EstmStdprc, row.RostCloseBeginDt, row.RostCloseExpryDt, row.XrgtDt);
                if (entity.UpdatedAt != was)
                {
                    updated++;
                }
            }
            else
            {
                var created = OddLotPayment.Create(issucoCustno, payDate, row.RgtStdDt, row.RgtRacd, row.RgtRacdNm, row.RgtRsnDetailSortCd, row.EstmStdTpcd, row.EstmStdDt, row.EstmStdprc, row.RostCloseBeginDt, row.RostCloseExpryDt, row.XrgtDt);
                await db.OddLotPayment.AddAsync(created, ct);
                byKey[row.RgtStdDt] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);
        return (inserted, updated);
    }

    /// <summary>
    /// getXrcStkStatInfo 결과를 ConvertibleBondTarget 로 upsert — UQ (BondIsin, XrcStkIsin). rolling per-채권ISIN 1콜 결과.
    /// </summary>
    public static async Task<(int Inserted, int Updated)> UpsertBondTargetsAsync(IAppDbContext db, IReadOnlyList<SeibroXrcStkStatParser.Row> rows, CancellationToken ct)
    {
        if (rows.Count == 0)
        {
            return (0, 0);
        }

        var bondIsins = rows.Select(c => c.BondIsin).Distinct().ToList();
        var existing = await db.ConvertibleBondTarget.Where(c => bondIsins.Contains(c.BondIsin)).ToListAsync(ct);
        var byKey = existing.ToDictionary(c => (c.BondIsin, c.XrcStkIsin));
        var seen = new HashSet<(string, string)>();
        var inserted = 0;
        var updated = 0;

        foreach (var row in rows)
        {
            var key = (row.BondIsin, row.XrcStkIsin);
            if (!seen.Add(key))
            {
                continue;
            }

            if (byKey.TryGetValue(key, out var entity))
            {
                var was = entity.UpdatedAt;
                entity.Update(row.BondSecnNm, row.BondKindNm, row.StkSecnNm, row.WrtbIsin, row.WrtbSecnNm, row.XrcRatio, row.XrcPrice, row.SetaccEndtermLimitDays, row.NewstkAllocDdBfLimitDays, row.DmanLimitRsnContent);
                if (entity.UpdatedAt != was)
                {
                    updated++;
                }
            }
            else
            {
                var created = ConvertibleBondTarget.Create(row.BondIsin, row.BondSecnNm, row.BondKindNm, row.XrcStkIsin, row.StkSecnNm, row.WrtbIsin, row.WrtbSecnNm, row.XrcRatio, row.XrcPrice, row.SetaccEndtermLimitDays, row.NewstkAllocDdBfLimitDays, row.DmanLimitRsnContent);
                await db.ConvertibleBondTarget.AddAsync(created, ct);
                byKey[key] = created;
                inserted++;
            }
        }

        await db.SaveChangesAsync(ct);
        return (inserted, updated);
    }

    /// <summary>
    /// getXrcStkOptionXrcInfo 결과를 ConvertibleExercise 로 window(권리행사일 begin~end) delete+insert 반영.
    /// 날짜 스윕(RGT_STD_DT=권리행사일)이라 창 재구성으로 삭제분 반영. begin/end 는 이번 스윕 창.
    /// </summary>
    public static async Task<(int Inserted, int Deleted)> ReplaceExerciseWindowAsync(IAppDbContext db, DateOnly begin, DateOnly end, IReadOnlyList<SeibroXrcStkOptionXrcParser.Row> rows, CancellationToken ct)
    {
        var deleted = await db.ConvertibleExercise.Where(c => c.RgtStdDt >= begin && c.RgtStdDt <= end).ExecuteDeleteAsync(ct);
        var inserted = 0;

        foreach (var row in rows)
        {
            if (row.RgtStdDt < begin || row.RgtStdDt > end)
            {
                continue; // 스윕 창 밖 — 다른 창이 담당
            }

            var created = ConvertibleExercise.Create(row.BondIsin, row.BondKorSecnNm, row.BondKindNm, row.XrcStkIsin, row.StkKorSecnNm, row.RgtStdDt, row.XrcPossBeginDt, row.XrcPossExpryDt, row.XrcAmt, row.XrcQty, row.XrcPrice, row.ListDt);
            await db.ConvertibleExercise.AddAsync(created, ct);
            inserted++;
        }

        await db.SaveChangesAsync(ct);
        return (inserted, deleted);
    }
}