package com.lincfusion.udyamlinc.dto;

import com.lincfusion.udyamlinc.enterprise.Enterprise;
import com.lincfusion.udyamlinc.enterprise.LedgerEntry;
import com.lincfusion.udyamlinc.officer.FieldVisit;
import com.lincfusion.udyamlinc.risk.ForecastPoint;
import com.lincfusion.udyamlinc.risk.ReasonCode;
import com.lincfusion.udyamlinc.risk.RiskAlert;
import com.lincfusion.udyamlinc.risk.StressScore;

import java.math.BigDecimal;
import java.util.List;

/** Response shapes. These mirror the interfaces in UdyamLinc-UI/src/lib/api.ts. */
public final class UdyamResponses {

    private UdyamResponses() {
    }

    public record OfficerSessionResponse(
            String token,
            String tokenType,
            String username,
            String fullName,
            String role,
            List<String> blocks,
            String branch) {
    }

    public record EnterpriseSessionResponse(
            String token,
            String tokenType,
            String enterpriseId,
            String name,
            String nameHi,
            String sector,
            String block,
            String lang) {
    }

    /** An enterprise flattened with its sector code, as the console's table expects. */
    public record EnterpriseRow(
            Long id,
            String enterpriseId,
            String name,
            String nameHi,
            String sector,
            String block,
            String district,
            Integer ownerCount,
            Integer vintageMonths,
            BigDecimal loanOutstanding,
            BigDecimal monthlyInstalment,
            Integer score,
            String band,
            List<Integer> trend,
            String lastUpdated,

            /**
             * Months until the downside case first fails to cover the instalment,
             * or null if it never does over the horizon.
             *
             * <p>Here because lead time is the product. A dashboard that ranks by
             * score alone shows what a bureau score already shows; ranking by when
             * trouble arrives is the thing this platform can do that they cannot.
             */
            Integer firstBreachHorizon,
            String firstBreachMonth,

            /** The top-ranked reason sentence from the run that produced the score. */
            String topDriver,
            String topDriverHi) {
    }

    /** Dashboard KPI tiles plus the enterprises-by-risk register. */
    public record PortfolioResponse(
            String block,
            String month,
            long total,
            long totalDelta,
            long red,
            long redDelta,
            long watch,
            long watchDelta,
            long standard,
            long standardDelta,
            int updatedMinutesAgo,
            List<EnterpriseRow> rows) {
    }

    /** Everything the risk detail panel needs for one enterprise. */
    public record EnterpriseDetailResponse(
            Enterprise enterprise,
            String sector,
            String district,
            StressScore score,
            List<ReasonCode> reasons,
            List<ForecastPoint> forecast,
            List<RiskAlert> alerts,
            List<FieldVisit> visits,
            List<LedgerEntry> ledger) {
    }

    public record ForecastResponse(
            String enterpriseId,
            String modelVersion,
            String engine,
            int horizonMonths,
            String breachMonth,
            BigDecimal shortfall,
            List<ForecastPoint> points) {
    }

    /** The enterprise app's Home tab in one call. */
    public record AppHomeResponse(
            Enterprise enterprise,
            RiskAlert alert,
            List<ForecastPoint> forecast,
            BigDecimal todayIn,
            BigDecimal todayOut,
            String adviceEn,
            String adviceHi,
            String lastSyncedAt) {
    }

    public record SyncResultResponse(int accepted, int duplicates, String syncedAt) {
    }

    /** One playbook action, offered for a band. */
    public record PlaybookActionResponse(
            String code, String label, String labelHi, String appliesTo, String detail) {
    }

    /** Sector pack rollup for the Forecasts screen. */
    public record SectorRollupResponse(
            String sector, String label, long count, long red, long watch, long standard, int avgScore) {
    }
}