'use client';

import React, { useEffect, useState, use } from 'react';
import { useRouter, useSearchParams } from 'next/navigation';
import {
  fetchFounderClubContext,
  FounderClubContext,
  sanitizePortalError,
} from '../../../../../lib/club-data';
import { FounderPortalShell } from '../../../../../components/founder-portal/founder-portal-shell';
import { RolesAndRanksSummary } from '../../../../../components/founder-portal/roles-and-ranks-summary';
import { OverviewSkeleton } from '../../../../../components/founder-portal/skeleton-state';
import { SafeErrorState } from '../../../../../components/founder-portal/safe-error-state';
import { firebaseAuth } from '../../../../../lib/firebase-client';

interface PageProps {
  params: Promise<{ clubId: string }>;
}

export default function ClubFounderRanksRolesPage({ params }: PageProps) {
  const { clubId } = use(params);
  const router = useRouter();
  const searchParams = useSearchParams();

  const [context, setContext] = useState<FounderClubContext | null>(null);
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState<string | null>(null);
  const [unauthenticated, setUnauthenticated] = useState(false);

  async function loadData() {
    setLoading(true);
    setError(null);
    setUnauthenticated(false);

    try {
      await firebaseAuth.authStateReady();
      const currentUser = firebaseAuth.currentUser;
      const isDemoPreview = searchParams?.get('preview') === 'demo';

      if (!isDemoPreview && !currentUser) {
        setUnauthenticated(true);
        setLoading(false);
        return;
      }

      const ctx = await fetchFounderClubContext(clubId, currentUser?.uid, {
        allowDemoPreview: isDemoPreview,
      });

      setContext(ctx);
    } catch (err) {
      setError(sanitizePortalError(err, "Ranks and roles couldn't be loaded."));
    } finally {
      setLoading(false);
    }
  }

  useEffect(() => {
    void loadData();
  }, [clubId]);

  if (loading) {
    return (
      <div className="min-h-screen bg-brand-bg telemetry-grid-bg p-6">
        <div className="max-w-5xl mx-auto">
          <OverviewSkeleton />
        </div>
      </div>
    );
  }

  if (unauthenticated) {
    return (
      <div className="min-h-screen bg-brand-bg telemetry-grid-bg flex items-center justify-center p-6">
        <div className="max-w-5xl mx-auto w-full flex items-center justify-center">
          <SafeErrorState
            title="Authentication Required"
            message="Sign in with your rider account to access club ranks and roles."
            actionLabel="Sign In"
            onAction={() => router.push('/login')}
          />
        </div>
      </div>
    );
  }

  if (error || !context) {
    return (
      <div className="min-h-screen bg-brand-bg telemetry-grid-bg flex items-center justify-center p-6">
        <div className="max-w-5xl mx-auto w-full flex items-center justify-center">
          <SafeErrorState
            title="Ranks & Roles Unavailable"
            message={error ?? "Ranks and roles couldn't be loaded."}
            actionLabel="Return to Clubs"
            onAction={() => router.push('/clubs')}
            onRetry={loadData}
          />
        </div>
      </div>
    );
  }

  return (
    <FounderPortalShell
      club={context.club}
      permissions={context.permissions}
      activeNav="ranks_roles"
      pendingApplicationsCount={0}
      upcomingRidesCount={0}
    >
      <div className="max-w-6xl mx-auto space-y-6 pb-12">
        {/* Header */}
        <section className="p-6 rounded-2xl glass-card border border-brand-border/60 relative overflow-hidden flex flex-col md:flex-row md:items-end justify-between gap-4 shadow-lg">
          <div className="absolute top-0 left-0 right-0 h-0.5 bg-gradient-to-r from-brand-cyan/60 via-brand-cyan/20 to-transparent" />
          <div>
            <div className="flex items-center gap-3">
              <span className="font-mono text-xs text-brand-cyan tracking-widest bg-brand-cyan/10 px-2.5 py-0.5 rounded-full border border-brand-cyan/30 font-medium">
                Governance &amp; Authority
              </span>
              <span className="font-mono text-xs text-slate-400 tracking-wider">
                // {context.club.name}
              </span>
            </div>
            <h1 className="font-headline font-bold text-2xl sm:text-3xl text-white mt-2 tracking-tight">
              Ranks &amp; Roles
            </h1>
            <p className="font-body text-sm text-slate-400 mt-1">
              Administrative role authority vs honorary squad rank designations.
            </p>
          </div>
        </section>

        {/* Roles and Ranks Summary Component */}
        <RolesAndRanksSummary
          ownerName={context.ownerProfile?.displayName || context.club.founderName || 'Club Founder'}
          memberCount={context.club.memberCount}
        />

        {/* Rank Hierarchy Detail Table */}
        <section className="rounded-2xl glass-card border border-brand-border/60 p-5 sm:p-6 space-y-4 shadow-lg">
          <div className="border-b border-brand-border/60 pb-3 flex items-center justify-between">
            <div className="flex items-center gap-2">
              <span className="material-symbols-outlined text-brand-cyan text-lg">military_tech</span>
              <h2 className="font-headline text-base font-bold text-white">
                Squad Rank Structure
              </h2>
            </div>
            <span className="font-mono text-[11px] text-slate-400">
              6 Recognized Titles
            </span>
          </div>

          <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-3">
            {[
              { rank: 'President', desc: 'Club founder and chief organizational executive.', level: 'Rank 1' },
              { rank: 'Vice President', desc: 'Senior operational deputy and squadron coordinator.', level: 'Rank 2' },
              { rank: 'Road Captain', desc: 'Leads pace line, group positioning, and on-road safety.', level: 'Rank 3' },
              { rank: 'Road Marshal', desc: 'Rear sweep and group communications integrity.', level: 'Rank 4' },
              { rank: 'Senior Rider', desc: 'Veteran rider with 1,000+ verified club group miles.', level: 'Rank 5' },
              { rank: 'Member', desc: 'Verified active rider in regular squadron standing.', level: 'Rank 6' },
            ].map((r) => (
              <div key={r.rank} className="p-4 rounded-xl bg-surface-container-low border border-brand-border/60 space-y-1.5">
                <div className="flex items-center justify-between">
                  <span className="font-headline font-semibold text-white text-xs">{r.rank}</span>
                  <span className="font-mono text-[10px] text-brand-cyan px-2 py-0.5 rounded bg-brand-cyan/10 border border-brand-cyan/30">
                    {r.level}
                  </span>
                </div>
                <p className="font-body text-xs text-slate-400 leading-relaxed">{r.desc}</p>
              </div>
            ))}
          </div>
        </section>
      </div>
    </FounderPortalShell>
  );
}