/**
 * OfstedSection — shared between the primary and secondary detail pages.
 *
 * The headline is the school's current Ofsted status (backend:
 * fact_ofsted_latest): the report card; or the overall grade still in force,
 * with the inspection that awarded or confirmed it; or "No overall grade".
 * A later visit that is not the grade's source gets its own line. Both pages
 * render the same branches, so neither drops an area judgement (audit M2).
 * Rule: docs/superpowers/specs/2026-10-05-ofsted-current-status-design.md
 *
 * Server component.
 */

import { ofstedDisplay } from '@/lib/compareLogic';
import { formatOfstedDate, gradeSourceLine, latestVisitLine, showLatestVisitLine } from '@/lib/ofstedStatus';
import type { OfstedInspection } from '@/lib/types';
import { Section, sectionStyles as styles } from './sectionShared';

const OFSTED_LABELS: Record<number, string> = {
  1: 'Outstanding', 2: 'Good', 3: 'Requires Improvement', 4: 'Inadequate',
};

const RC_LABELS: Record<number, string> = {
  1: 'Exceptional', 2: 'Strong', 3: 'Expected standard', 4: 'Needs attention', 5: 'Urgent improvement',
};

const RC_CATEGORIES = [
  { key: 'rc_inclusion' as const,             label: 'Inclusion' },
  { key: 'rc_curriculum_teaching' as const,   label: 'Curriculum & Teaching' },
  { key: 'rc_achievement' as const,           label: 'Achievement' },
  { key: 'rc_attendance_behaviour' as const,  label: 'Attendance & Behaviour' },
  { key: 'rc_personal_development' as const,  label: 'Personal Development' },
  { key: 'rc_leadership_governance' as const, label: 'Leadership & Governance' },
  { key: 'rc_early_years' as const,           label: 'Early Years' },
  { key: 'rc_sixth_form' as const,            label: 'Sixth Form' },
];

export interface OfstedSectionProps {
  ofsted: OfstedInspection;
  urn: number;
  isReportCard: boolean;
  ofstedInspectedDate: string | null;
  oeifAllSameGrade: boolean;
  oeifAreas: { label: string; value: number }[];
}

export function OfstedSection({
  ofsted, urn, isReportCard, ofstedInspectedDate,
  oeifAllSameGrade, oeifAreas,
}: OfstedSectionProps) {
  const display = ofstedDisplay(ofsted);

  return (
    <Section id="ofsted">
      <h2 className={styles.sectionTitle}>
        {isReportCard ? 'Ofsted Report Card' : 'Ofsted Rating'}
        {ofstedInspectedDate && (
          <span className={styles.ofstedDate}>
            Inspected {new Date(ofstedInspectedDate).toLocaleDateString('en-GB', { day: 'numeric', month: 'long', year: 'numeric' })}
          </span>
        )}
        <a
          href={`https://reports.ofsted.gov.uk/inspection-reports/find-inspection-report/provider/ELS/${urn}`}
          target="_blank"
          rel="noopener noreferrer"
          className={styles.ofstedReportLink}
          data-umami-event="external_link_clicked"
          data-umami-event-target="ofsted"
        >
          Ofsted reports ↗
        </a>
      </h2>

      {isReportCard ? (
        /* ── New Report Card layout ── */
        <>
          <p className={styles.ofstedDisclaimer}>
            From November 2025, Ofsted replaced single overall grades with Report Cards rating schools across several areas.
          </p>
          <div className={`${styles.metricsGrid} ${styles.gradeGrid}`}>
            {ofsted.rc_safeguarding_met != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Safeguarding</div>
                <div className={`${styles.metricValue} ${ofsted.rc_safeguarding_met ? styles.safeguardingMet : styles.safeguardingNotMet}`}>
                  {ofsted.rc_safeguarding_met ? 'Met' : 'Not met'}
                </div>
              </div>
            )}
            {RC_CATEGORIES.map(({ key, label }) => {
              const value = ofsted[key] as number | null;
              return value != null ? (
                <div key={key} className={styles.metricCard}>
                  <div className={styles.metricLabel}>{label}</div>
                  <div className={`${styles.metricValue} ${styles[`rcGrade${value}`]}`}>
                    {RC_LABELS[value]}
                  </div>
                </div>
              ) : null;
            })}
          </div>
        </>
      ) : (
        <>
          <div className={styles.ofstedHeader}>
            {display.kind === 'graded' || display.kind === 'confirmed' ? (
              <>
                <span className={`${styles.ofstedGrade} ${styles[`ofstedGrade${display.grade}`]}`}>
                  {display.gradeLabel}
                </span>
                {ofsted.previous_overall != null && ofsted.previous_overall !== display.grade && (
                  <span className={styles.ofstedPrevious}>
                    Previously: {OFSTED_LABELS[ofsted.previous_overall]}
                  </span>
                )}
              </>
            ) : (
              <span className={styles.ofstedGrade}>No overall grade</span>
            )}
          </div>
          <p className={styles.ofstedDisclaimer}>
            {ofsted.current_grade
              ? gradeSourceLine(ofsted.current_grade)
              : 'Ofsted stopped giving overall grades in September 2024.'}
          </p>
          {showLatestVisitLine(ofsted) && ofsted.latest_visit && (
            <p className={styles.ofstedDisclaimer}>Latest visit: {latestVisitLine(ofsted.latest_visit)}</p>
          )}
          {oeifAllSameGrade && (display.kind === 'graded' || display.kind === 'confirmed') ? (
            <p className={styles.ofstedAllSame}>
              Rated <strong>{display.gradeLabel}</strong> across all inspected areas: Quality of Teaching, Behaviour, Pupils&apos; Development and Leadership.
            </p>
          ) : oeifAreas.length > 0 ? (
            <>
              {ofsted.inspection_date && ofsted.inspection_date !== ofsted.latest_visit?.date && (
                <p className={styles.ofstedDisclaimer}>
                  Area judgements from the graded inspection, {formatOfstedDate(ofsted.inspection_date)}.
                </p>
              )}
              <div className={`${styles.metricsGrid} ${styles.gradeGrid}`}>
                {oeifAreas.map(({ label, value }) => (
                  <div key={label} className={styles.metricCard}>
                    <div className={styles.metricLabel}>{label}</div>
                    <div className={`${styles.metricValue} ${styles[`ofstedGrade${value}`]}`}>
                      {OFSTED_LABELS[value]}
                    </div>
                  </div>
                ))}
              </div>
            </>
          ) : null}
        </>
      )}
    </Section>
  );
}