"use client";

/**
 * PticaPageContent — client root of the ПТИЦА cockpit (INCREMENT 1).
 *
 * Wires the SAME /analyze data as the existing light analysis page via
 * useParcelAnalyzeQuery, narrows the response to ParcelAnalysis (the sanctioned
 * `as unknown as` pattern — see AnalysisPageContent.tsx:111), and composes the
 * dark operator-terminal shell. Only the 'analysis' tab renders content in PR#1;
 * Scenarios / Reports / Compare show an honest "В разработке" panel.
 *
 * The root carries BOTH `.pticaRoot` and `data-theme="dark"` so the scoped dark
 * tokens apply here and never leak to the light pages.
 */

import { useState } from "react";
import Link from "next/link";

import styles from "./ptica.module.css";
import {
  useParcelAnalyzeQuery,
  useParcelForecastQuery,
} from "@/lib/site-finder-api";
import type { ParcelAnalysis } from "@/types/site-finder";
import { PticaShell } from "@/components/site-finder/ptica/PticaShell";
import type { PticaTab } from "@/components/site-finder/ptica/PticaShell";
import { PticaHero } from "@/components/site-finder/ptica/PticaHero";
import { DevelopmentScan } from "@/components/site-finder/ptica/DevelopmentScan";
import { PticaScenarios } from "@/components/site-finder/ptica/scenarios/PticaScenarios";
import { PticaReports } from "@/components/site-finder/ptica/reports/PticaReports";
import { PticaCompare } from "@/components/site-finder/ptica/compare/PticaCompare";

interface Props {
  cad: string;
}

export function PticaPageContent({ cad }: Props) {
  const [horizon, setHorizon] = useState<number>(12);
  const [tab, setTab] = useState<PticaTab>("analysis");
  const { data, isLoading, error } = useParcelAnalyzeQuery(cad, horizon);
  // §22 forecast is keyed/cached by cad — call unconditionally; it polls the
  // async report (enqueued by /analyze) and feeds both the hero invest-score and
  // the Scenarios tab. Pending state is handled inside each consumer.
  const { data: forecastData } = useParcelForecastQuery(cad);
  const forecastReport =
    forecastData?.status === "ready" ? forecastData.report : undefined;

  // ── Loading ────────────────────────────────────────────────────────────────
  if (isLoading) {
    return (
      <div className={styles.pticaRoot} data-theme="dark">
        <div className={styles.stateScreen}>
          <div className={styles.stateBox}>Анализируем участок {cad}…</div>
        </div>
      </div>
    );
  }

  // ── Error ──────────────────────────────────────────────────────────────────
  if (error || !data) {
    const msg =
      error instanceof Error ? error.message : "Ошибка загрузки анализа";
    return (
      <div className={styles.pticaRoot} data-theme="dark">
        <div className={styles.stateScreen}>
          <div>
            <div className={styles.stateError}>{msg}</div>
            <Link href="/site-finder" className={styles.stateLink}>
              ← Вернуться к Site Finder
            </Link>
          </div>
        </div>
      </div>
    );
  }

  // Narrow to ParcelAnalysis (superset of ParcelAnalyzeResponse) — both describe
  // the same /analyze endpoint. Sanctioned pattern (AnalysisPageContent.tsx:111).
  const analysis = data as unknown as ParcelAnalysis;

  return (
    <div className={styles.pticaRoot} data-theme="dark">
      <PticaShell activeTab={tab} onTabChange={setTab}>
        {tab === "analysis" && (
          <>
            <PticaHero analysis={analysis} forecastReport={forecastReport} />
            <DevelopmentScan analysis={analysis} />
          </>
        )}
        {tab === "scenarios" && (
          <PticaScenarios
            cad={cad}
            horizon={horizon}
            onHorizonChange={setHorizon}
          />
        )}
        {tab === "reports" && <PticaReports cad={cad} analysis={analysis} />}
        {tab === "compare" && <PticaCompare cad={cad} />}
      </PticaShell>
    </div>
  );
}