/**
 * SecondaryAdmissionsSection — secondary pages.
 *
 * Not shared with the primary AdmissionsSection: the two were only 14%
 * similar. This one has no year/trend toggle, so it ships no client
 * JavaScript at all. Server component.
 */

import type { School, SchoolAdmissions, SchoolAdmissionDistance } from '@/lib/types';
import { formatPercentage, hasReligiousCharacter, isSelective } from '@/lib/utils';
import { Section, sectionStyles as styles } from './sectionShared';
import {
  describeCutoff, describeCutoffAbsence,
  CUTOFF_NOTE, CUTOFF_MEASUREMENT_NOTE,
} from './lastDistanceOffered';

export function SecondaryAdmissionsSection({
  admissions, admissionsHistory, admissionDistance, schoolInfo,
}: {
  /* Nullable for the same reason as the primary section: a school can have a
     published cut-off and no EES admissions row. */
  admissions: SchoolAdmissions | null;
  admissionsHistory: SchoolAdmissions[];
  admissionDistance: SchoolAdmissionDistance | null | undefined;
  schoolInfo: School;
}) {
  const cutoff = describeCutoff(admissionDistance);
  /* Absent means cut-offs are not being published at all; null means this
     school has no published cut-off. Only the second is a fact about the
     school, and only the second can be stated. Saying "X has not published a
     cut-off" while the feature is dark describes us, and is false wherever the
     authority does publish one. */
  const featureOn = admissionDistance !== undefined;
  // Moved with this section from SecondarySchoolDetailView, its only consumer.
  const admissionsTag = (() => {
    if (isSelective(schoolInfo.admissions_policy)) return 'Selective';
    if (hasReligiousCharacter(schoolInfo.religious_denomination)) return 'Faith priority';
    return null;
  })();

  return (
    <section id="admissions" className={styles.card}>
      <h2 className={styles.sectionTitle}>Admissions</h2>

      {admissionsTag && (
        <div className={`${styles.admissionsTypeBadge} ${admissionsTag === 'Selective' ? styles.admissionsSelective : styles.admissionsFaith}`}>
          <strong>{admissionsTag}:</strong>{' '}
          {admissionsTag === 'Selective'
            ? 'entry to this school is by selective examination (e.g. 11+).'
            : `this school has a faith-based admissions priority (${schoolInfo.religious_denomination}).`}
        </div>
      )}

      <div className={styles.metricsGrid}>
        {admissions?.places_offered != null && (
          <div className={styles.metricCard}>
            <div className={styles.metricLabel}>Year 7 places offered</div>
            <div className={styles.metricValue}>{admissions.places_offered}</div>
          </div>
        )}
        {admissions?.total_applications != null && (
          <div className={styles.metricCard}>
            <div className={styles.metricLabel}>Total applications</div>
            <div className={styles.metricValue}>{admissions.total_applications.toLocaleString()}</div>
          </div>
        )}
        {admissions?.first_preference_applications != null && (
          <div className={styles.metricCard}>
            <div className={styles.metricLabel}>1st preference applications</div>
            <div className={styles.metricValue}>{admissions.first_preference_applications.toLocaleString()}</div>
          </div>
        )}
        {admissions?.first_preference_offer_pct != null && (
          <div className={styles.metricCard}>
            <div className={styles.metricLabel}>Families who got their first choice</div>
            <div className={styles.metricValue}>{formatPercentage(admissions.first_preference_offer_pct)}</div>
          </div>
        )}
        {cutoff && (
          <div className={`${styles.metricCard} ${styles.metricCardDistance}`}>
            <div className={styles.metricLabel}>
              Last distance offered · {cutoff.entryYear}
            </div>
            <div className={styles.metricValue}>
              {cutoff.primary}{' '}
              <span className={styles.metricValueSub}>{cutoff.secondary}</span>
            </div>
          </div>
        )}
      </div>
      {admissions?.oversubscribed != null && (
        <div className={`${styles.admissionsBadge} ${admissions.oversubscribed ? styles.statusWarn : styles.statusGood}`}>
          {admissions.oversubscribed
            ? '⚠ Applications exceeded places last year'
            : '✓ Places were available last year'}
        </div>
      )}

      {/* Replaces a blanket "distance cut-off data is not available for this
          school", which was hardcoded onto every secondary page and was untrue
          wherever the local authority does publish. The absence is now stated
          only when it is real, and names the authority that would hold it. */}
      {cutoff ? (
        <p className={styles.admissionsDistanceNote}>
          {CUTOFF_NOTE} {CUTOFF_MEASUREMENT_NOTE}
          {cutoff.routeNote && <> {cutoff.routeNote}</>}
        </p>
      ) : featureOn ? (
        <p className={styles.sectionSubtitle} style={{ marginTop: '1rem' }}>
          {describeCutoffAbsence({
            localAuthority: schoolInfo.local_authority,
            admissionsPolicy: schoolInfo.admissions_policy,
            admissionsHistory,
          })}
        </p>
      ) : null}

    </section>
  );
}