/**
 * SchoolDetailView Component
 * Displays comprehensive school information with performance charts
 */

'use client';

import { useRouter } from 'next/navigation';
import { useComparison } from '@/hooks/useComparison';
import { PerformanceChart } from './PerformanceChart';
import { SchoolMap } from './SchoolMap';
import type {
  School, SchoolResult, AbsenceData,
  OfstedInspection, OfstedParentView, SchoolCensus,
  SchoolAdmissions, SenDetail, Phonics,
  SchoolDeprivation, SchoolFinance,
} from '@/lib/types';
import { formatPercentage, formatProgress, calculateTrend } from '@/lib/utils';
import styles from './SchoolDetailView.module.css';

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

interface SchoolDetailViewProps {
  schoolInfo: School;
  yearlyData: SchoolResult[];
  absenceData: AbsenceData | null;
  ofsted: OfstedInspection | null;
  parentView: OfstedParentView | null;
  census: SchoolCensus | null;
  admissions: SchoolAdmissions | null;
  senDetail: SenDetail | null;
  phonics: Phonics | null;
  deprivation: SchoolDeprivation | null;
  finance: SchoolFinance | null;
}

export function SchoolDetailView({
  schoolInfo, yearlyData, absenceData,
  ofsted, parentView, census, admissions, senDetail, phonics, deprivation, finance,
}: SchoolDetailViewProps) {
  const router = useRouter();
  const { addSchool, removeSchool, isSelected } = useComparison();
  const isInComparison = isSelected(schoolInfo.urn);

  // Get latest results
  const latestResults = yearlyData.length > 0 ? yearlyData[yearlyData.length - 1] : null;

  // Handle add/remove from comparison
  const handleComparisonToggle = () => {
    if (isInComparison) {
      removeSchool(schoolInfo.urn);
    } else {
      addSchool(schoolInfo);
    }
  };

  return (
    <div className={styles.container}>
      {/* Back Navigation */}
      <div className={styles.backNav}>
        <button onClick={() => router.back()} className={styles.backButton}>← Back</button>
      </div>

      {/* Header Section */}
      <header className={styles.header}>
        <div className={styles.headerContent}>
          <div className={styles.titleSection}>
            <h1 className={styles.schoolName}>{schoolInfo.school_name}</h1>
            <div className={styles.meta}>
              {schoolInfo.local_authority && (
                <span className={styles.metaItem}>
                  {schoolInfo.local_authority}
                </span>
              )}
              {schoolInfo.school_type && (
                <span className={styles.metaItem}>
                  {schoolInfo.school_type}
                </span>
              )}
            </div>
            {schoolInfo.address && (
              <p className={styles.address}>
                {schoolInfo.address}
                {schoolInfo.postcode && `, ${schoolInfo.postcode}`}
              </p>
            )}
          </div>
          <div className={styles.actions}>
            <button
              onClick={handleComparisonToggle}
              className={isInComparison ? styles.btnRemove : styles.btnAdd}
            >
              {isInComparison ? '✓ In Comparison' : '+ Add to Compare'}
            </button>
          </div>
        </div>
      </header>

      {/* Latest Results Summary */}
      {latestResults && (
        <section className={styles.summary}>
          <h2 className={styles.sectionTitle}>
            Latest Results ({latestResults.year})
          </h2>
          <div className={styles.metricsGrid}>
            {latestResults.rwm_expected_pct !== null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>
                  RWM Expected Standard
                </div>
                <div className={styles.metricValue}>
                  {formatPercentage(latestResults.rwm_expected_pct)}
                </div>
              </div>
            )}

            {latestResults.rwm_high_pct !== null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>
                  RWM Higher Standard
                </div>
                <div className={styles.metricValue}>
                  {formatPercentage(latestResults.rwm_high_pct)}
                </div>
              </div>
            )}

            {latestResults.reading_progress !== null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>
                  Reading Progress
                </div>
                <div className={styles.metricValue}>
                  {formatProgress(latestResults.reading_progress)}
                </div>
              </div>
            )}

            {latestResults.writing_progress !== null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>
                  Writing Progress
                </div>
                <div className={styles.metricValue}>
                  {formatProgress(latestResults.writing_progress)}
                </div>
              </div>
            )}

            {latestResults.maths_progress !== null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>
                  Maths Progress
                </div>
                <div className={styles.metricValue}>
                  {formatProgress(latestResults.maths_progress)}
                </div>
              </div>
            )}

          </div>
          {(latestResults.reading_progress !== null || latestResults.writing_progress !== null || latestResults.maths_progress !== null) && (
            <p className={styles.progressNote}>Progress scores: 0 = national average. Positive = above average, negative = below average.</p>
          )}
        </section>
      )}

      {/* Map */}
      {schoolInfo.latitude && schoolInfo.longitude && (
        <section className={styles.mapSection}>
          <h2 className={styles.sectionTitle}>Location</h2>
          <div className={styles.mapContainer}>
            <SchoolMap
              schools={[schoolInfo]}
              center={[schoolInfo.latitude, schoolInfo.longitude]}
              zoom={15}
            />
          </div>
        </section>
      )}

      {/* Performance Over Time */}
      {yearlyData.length > 0 && (
        <section className={styles.chartsSection}>
          <h2 className={styles.sectionTitle}>Performance Over Time</h2>
          <div className={styles.chartContainer}>
            <PerformanceChart
              data={yearlyData}
              schoolName={schoolInfo.school_name}
            />
          </div>
        </section>
      )}

      {/* Detailed Metrics */}
      {latestResults && (
        <section className={styles.detailedMetrics}>
          <h2 className={styles.sectionTitle}>Detailed Metrics</h2>
          <div className={styles.metricGroupsGrid}>
            {/* Reading Metrics */}
            <div className={styles.metricGroup}>
              <h3 className={styles.metricGroupTitle}>Reading</h3>
              <div className={styles.metricTable}>
                {latestResults.reading_expected_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Expected</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.reading_expected_pct)}</span>
                  </div>
                )}
                {latestResults.reading_high_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Higher</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.reading_high_pct)}</span>
                  </div>
                )}
                {latestResults.reading_progress !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Progress</span>
                    <span className={styles.metricValue}>{formatProgress(latestResults.reading_progress)}</span>
                  </div>
                )}
                {latestResults.reading_avg_score !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Avg Score</span>
                    <span className={styles.metricValue}>{latestResults.reading_avg_score.toFixed(1)}</span>
                  </div>
                )}
              </div>
            </div>

            {/* Writing Metrics */}
            <div className={styles.metricGroup}>
              <h3 className={styles.metricGroupTitle}>Writing</h3>
              <div className={styles.metricTable}>
                {latestResults.writing_expected_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Expected</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.writing_expected_pct)}</span>
                  </div>
                )}
                {latestResults.writing_high_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Higher</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.writing_high_pct)}</span>
                  </div>
                )}
                {latestResults.writing_progress !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Progress</span>
                    <span className={styles.metricValue}>{formatProgress(latestResults.writing_progress)}</span>
                  </div>
                )}
              </div>
            </div>

            {/* Maths Metrics */}
            <div className={styles.metricGroup}>
              <h3 className={styles.metricGroupTitle}>Maths</h3>
              <div className={styles.metricTable}>
                {latestResults.maths_expected_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Expected</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.maths_expected_pct)}</span>
                  </div>
                )}
                {latestResults.maths_high_pct !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Higher</span>
                    <span className={styles.metricValue}>{formatPercentage(latestResults.maths_high_pct)}</span>
                  </div>
                )}
                {latestResults.maths_progress !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Progress</span>
                    <span className={styles.metricValue}>{formatProgress(latestResults.maths_progress)}</span>
                  </div>
                )}
                {latestResults.maths_avg_score !== null && (
                  <div className={styles.metricRow}>
                    <span className={styles.metricName}>Avg Score</span>
                    <span className={styles.metricValue}>{latestResults.maths_avg_score.toFixed(1)}</span>
                  </div>
                )}
              </div>
            </div>
          </div>
        </section>
      )}

      {/* Absence Data */}
      {absenceData && (
        <section className={styles.absenceSection}>
          <h2 className={styles.sectionTitle}>Absence Data</h2>
          <div className={styles.absenceGrid}>
            {absenceData.overall_absence_rate !== null && (
              <div className={styles.absenceCard}>
                <div className={styles.absenceLabel}>Overall Absence Rate</div>
                <div className={styles.absenceValue}>{formatPercentage(absenceData.overall_absence_rate)}</div>
              </div>
            )}
            {absenceData.persistent_absence_rate !== null && (
              <div className={styles.absenceCard}>
                <div className={styles.absenceLabel}>Persistent Absence</div>
                <div className={styles.absenceValue}>{formatPercentage(absenceData.persistent_absence_rate)}</div>
              </div>
            )}
          </div>
        </section>
      )}

      {/* All Years Data Table */}
      {yearlyData.length > 0 && (
        <section className={styles.historySection}>
          <h2 className={styles.sectionTitle}>Historical Data</h2>
          <div className={styles.tableWrapper}>
            <table className={styles.dataTable}>
              <thead>
                <tr>
                  <th>Year</th>
                  <th>RWM Expected</th>
                  <th>RWM Higher</th>
                  <th>Reading Progress</th>
                  <th>Writing Progress</th>
                  <th>Maths Progress</th>
                </tr>
              </thead>
              <tbody>
                {yearlyData.map((result) => (
                  <tr key={result.year}>
                    <td className={styles.yearCell}>{result.year}</td>
                    <td>{result.rwm_expected_pct !== null ? formatPercentage(result.rwm_expected_pct) : '-'}</td>
                    <td>{result.rwm_high_pct !== null ? formatPercentage(result.rwm_high_pct) : '-'}</td>
                    <td>{result.reading_progress !== null ? formatProgress(result.reading_progress) : '-'}</td>
                    <td>{result.writing_progress !== null ? formatProgress(result.writing_progress) : '-'}</td>
                    <td>{result.maths_progress !== null ? formatProgress(result.maths_progress) : '-'}</td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </section>
      )}

      {/* Ofsted Section */}
      {ofsted && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Ofsted Inspection</h2>
          <div className={styles.ofstedHeader}>
            <span className={`${styles.ofstedGrade} ${styles[`ofstedGrade${ofsted.overall_effectiveness}`]}`}>
              {ofsted.overall_effectiveness ? OFSTED_LABELS[ofsted.overall_effectiveness] : 'Not rated'}
            </span>
            {ofsted.inspection_date && (
              <span className={styles.ofstedDate}>
                Inspected: {new Date(ofsted.inspection_date).toLocaleDateString('en-GB', { day: 'numeric', month: 'long', year: 'numeric' })}
              </span>
            )}
          </div>
          <div className={styles.metricsGrid}>
            {[
              { label: 'Quality of Education', value: ofsted.quality_of_education },
              { label: 'Behaviour & Attitudes', value: ofsted.behaviour_attitudes },
              { label: 'Personal Development', value: ofsted.personal_development },
              { label: 'Leadership & Management', value: ofsted.leadership_management },
              ...(ofsted.early_years_provision != null ? [{ label: 'Early Years', value: ofsted.early_years_provision }] : []),
            ].map(({ label, value }) => value != null && (
              <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>
          {ofsted.inspection_type && (
            <p className={styles.ofstedType}>{ofsted.inspection_type}</p>
          )}
        </section>
      )}

      {/* What Parents Think */}
      {parentView && parentView.total_responses != null && parentView.total_responses > 0 && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>What Parents Think</h2>
          <p className={styles.supplementarySubtitle}>
            Based on {parentView.total_responses.toLocaleString()} parent responses to the Ofsted Parent View survey.
          </p>
          <div className={styles.parentViewGrid}>
            {[
              { label: 'My child is happy here', pct: parentView.q_happy_pct },
              { label: 'My child feels safe here', pct: parentView.q_safe_pct },
              { label: 'Would recommend this school', pct: parentView.q_recommend_pct },
              { label: 'Teaching is good', pct: parentView.q_teaching_pct },
              { label: 'My child makes good progress', pct: parentView.q_progress_pct },
              { label: 'School looks after wellbeing', pct: parentView.q_wellbeing_pct },
              { label: 'Led and managed effectively', pct: parentView.q_leadership_pct },
              { label: 'Behaviour is well managed', pct: parentView.q_behaviour_pct },
              { label: 'Communicates well with parents', pct: parentView.q_communication_pct },
            ].filter(q => q.pct != null).map(({ label, pct }) => (
              <div key={label} className={styles.parentViewRow}>
                <span className={styles.parentViewLabel}>{label}</span>
                <div className={styles.parentViewBar}>
                  <div className={styles.parentViewFill} style={{ width: `${pct}%` }} />
                </div>
                <span className={styles.parentViewPct}>{pct}%</span>
              </div>
            ))}
          </div>
        </section>
      )}

      {/* Admissions */}
      {admissions && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Admissions ({admissions.year})</h2>
          <div className={styles.metricsGrid}>
            {admissions.published_admission_number != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Places available</div>
                <div className={styles.metricValue}>{admissions.published_admission_number}</div>
              </div>
            )}
            {admissions.total_applications != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Applications received</div>
                <div className={styles.metricValue}>{admissions.total_applications.toLocaleString()}</div>
              </div>
            )}
            {admissions.first_preference_offers_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Got first choice</div>
                <div className={styles.metricValue}>{admissions.first_preference_offers_pct}%</div>
              </div>
            )}
            {admissions.oversubscribed != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Oversubscribed</div>
                <div className={styles.metricValue}>{admissions.oversubscribed ? 'Yes' : 'No'}</div>
              </div>
            )}
          </div>
        </section>
      )}

      {/* Pupils & Inclusion (Census + SEN) */}
      {(census || senDetail) && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Pupils &amp; Inclusion</h2>
          <div className={styles.metricsGrid}>
            {census?.class_size_avg != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Average class size</div>
                <div className={styles.metricValue}>{census.class_size_avg.toFixed(1)}</div>
              </div>
            )}
          </div>
          {senDetail && (
            <>
              <h3 className={styles.subSectionTitle}>Primary SEN Needs (latest year)</h3>
              <div className={styles.metricsGrid}>
                {[
                  { label: 'Speech & Language', pct: senDetail.primary_need_speech_pct },
                  { label: 'Autism (ASD)', pct: senDetail.primary_need_autism_pct },
                  { label: 'Learning Difficulties', pct: senDetail.primary_need_mld_pct },
                  { label: 'Specific Learning (Dyslexia etc.)', pct: senDetail.primary_need_spld_pct },
                  { label: 'Social, Emotional & Mental Health', pct: senDetail.primary_need_semh_pct },
                  { label: 'Physical / Sensory', pct: senDetail.primary_need_physical_pct },
                ].filter(n => n.pct != null).map(({ label, pct }) => (
                  <div key={label} className={styles.metricCard}>
                    <div className={styles.metricLabel}>{label}</div>
                    <div className={styles.metricValue}>{pct}%</div>
                  </div>
                ))}
              </div>
            </>
          )}
        </section>
      )}

      {/* Year 1 Phonics */}
      {phonics && phonics.year1_phonics_pct != null && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Year 1 Phonics ({phonics.year})</h2>
          <div className={styles.metricsGrid}>
            <div className={styles.metricCard}>
              <div className={styles.metricLabel}>Reached expected standard</div>
              <div className={styles.metricValue}>{formatPercentage(phonics.year1_phonics_pct)}</div>
            </div>
            {phonics.year2_phonics_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Year 2 (re-takers) standard</div>
                <div className={styles.metricValue}>{formatPercentage(phonics.year2_phonics_pct)}</div>
              </div>
            )}
          </div>
        </section>
      )}

      {/* Deprivation Context */}
      {deprivation && deprivation.idaci_decile != null && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Deprivation Context</h2>
          <div className={styles.metricsGrid}>
            <div className={styles.metricCard}>
              <div className={styles.metricLabel}>Area deprivation decile</div>
              <div className={styles.metricValue}>{deprivation.idaci_decile} / 10</div>
              <div className={styles.metricHint}>
                1 = most deprived, 10 = least deprived
              </div>
            </div>
            {deprivation.idaci_score != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>IDACI score</div>
                <div className={styles.metricValue}>{deprivation.idaci_score.toFixed(3)}</div>
              </div>
            )}
          </div>
        </section>
      )}

      {/* Finances */}
      {finance && finance.per_pupil_spend != null && (
        <section className={styles.supplementarySection}>
          <h2 className={styles.sectionTitle}>Finances ({finance.year})</h2>
          <div className={styles.metricsGrid}>
            {finance.per_pupil_spend != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Spend per pupil</div>
                <div className={styles.metricValue}>£{Math.round(finance.per_pupil_spend).toLocaleString()}</div>
              </div>
            )}
            {finance.teacher_cost_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>Teacher costs</div>
                <div className={styles.metricValue}>{finance.teacher_cost_pct.toFixed(1)}% of budget</div>
              </div>
            )}
            {finance.staff_cost_pct != null && (
              <div className={styles.metricCard}>
                <div className={styles.metricLabel}>All staff costs</div>
                <div className={styles.metricValue}>{finance.staff_cost_pct.toFixed(1)}% of budget</div>
              </div>
            )}
          </div>
        </section>
      )}
    </div>
  );
}