/**
 * PortfolioPage — real My Portfolio CRUD, wired to backend.
 * Uses existing /api/:rolePrefix/portfolio/me endpoints.
 * Professionals only.
 */
import { For, Show, createSignal, onMount } from 'solid-js';
import { CARD, BTN_ORANGE, BTN_GHOST, BTN_PRIMARY, INPUT, LABEL } from '~/components/DashboardShell';

const API = '/api/gateway';

// ── Role prefix map ───────────────────────────────────────────────────────────

const ROLE_PREFIX: Record<string, string> = {
  PHOTOGRAPHER:        'photographers',
  MAKEUP_ARTIST:       'makeup-artists',
  TUTOR:               'tutors',
  DEVELOPER:           'developers',
  VIDEO_EDITOR:        'video-editors',
  GRAPHIC_DESIGNER:    'graphic-designers',
  SOCIAL_MEDIA_MANAGER:'social-media-managers',
  FITNESS_TRAINER:     'fitness-trainers',
  CATERING_SERVICES:   'catering-services',
  UGC_CONTENT_CREATOR: 'ugc-content-creators',
};

// ── Types ─────────────────────────────────────────────────────────────────────

interface PortfolioItem {
  id: string;
  title: string;
  description?: string;
  tags?: string[];
  created_at?: string;
}

interface FormState {
  title: string;
  description: string;
  tags: string;
}

const EMPTY_FORM: FormState = { title: '', description: '', tags: '' };

// ── Helpers ───────────────────────────────────────────────────────────────────

async function apiFetch(path: string, opts?: RequestInit) {
  return fetch(`${API}${path}`, {
    ...opts,
    credentials: 'include',
    headers: { 'Content-Type': 'application/json', ...(opts?.headers ?? {}) },
  });
}

// ── Component ─────────────────────────────────────────────────────────────────

interface Props {
  roleKey: string;
}

export default function PortfolioPage(props: Props) {
  const prefix = () => ROLE_PREFIX[props.roleKey] ?? '';
  const isProfessional = () => Boolean(prefix());

  const [items, setItems] = createSignal<PortfolioItem[]>([]);
  const [loading, setLoading] = createSignal(true);
  const [showForm, setShowForm] = createSignal(false);
  const [editId, setEditId] = createSignal<string | null>(null);
  const [form, setForm] = createSignal<FormState>({ ...EMPTY_FORM });
  const [saving, setSaving] = createSignal(false);
  const [deleting, setDeleting] = createSignal<string | null>(null);
  const [error, setError] = createSignal('');

  const loadItems = async () => {
    if (!isProfessional()) { setLoading(false); return; }
    setLoading(true);
    try {
      const res = await apiFetch(`/api/${prefix()}/portfolio/me`);
      if (res.ok) {
        const data = await res.json();
        setItems(Array.isArray(data) ? data : (data.items ?? []));
      }
    } finally {
      setLoading(false);
    }
  };

  onMount(loadItems);

  const openCreate = () => {
    setEditId(null);
    setForm({ ...EMPTY_FORM });
    setError('');
    setShowForm(true);
  };

  const openEdit = (item: PortfolioItem) => {
    setEditId(item.id);
    setForm({
      title: item.title,
      description: item.description ?? '',
      tags: (item.tags ?? []).join(', '),
    });
    setError('');
    setShowForm(true);
  };

  const cancelForm = () => {
    setShowForm(false);
    setEditId(null);
    setForm({ ...EMPTY_FORM });
    setError('');
  };

  const setField = (key: keyof FormState, val: string) =>
    setForm((prev) => ({ ...prev, [key]: val }));

  const handleSave = async () => {
    if (!form().title.trim()) { setError('Title is required.'); return; }
    setSaving(true);
    setError('');
    const payload = {
      title: form().title.trim(),
      description: form().description.trim() || undefined,
      tags: form().tags
        .split(',')
        .map((t) => t.trim())
        .filter(Boolean),
    };
    try {
      const id = editId();
      const res = id
        ? await apiFetch(`/api/${prefix()}/portfolio/me/${id}`, { method: 'PATCH', body: JSON.stringify(payload) })
        : await apiFetch(`/api/${prefix()}/portfolio/me`, { method: 'POST', body: JSON.stringify(payload) });

      if (res.ok) {
        await loadItems();
        cancelForm();
      } else {
        const d = await res.json().catch(() => ({}));
        setError(d.error ?? d.message ?? 'Failed to save. Please try again.');
      }
    } catch {
      setError('Network error. Please try again.');
    } finally {
      setSaving(false);
    }
  };

  const handleDelete = async (id: string) => {
    if (!confirm('Delete this portfolio item?')) return;
    setDeleting(id);
    try {
      await apiFetch(`/api/${prefix()}/portfolio/me/${id}`, { method: 'DELETE' });
      await loadItems();
    } finally {
      setDeleting(null);
    }
  };

  // ── Not a professional role ─────────────────────────────────────────────
  if (!isProfessional()) {
    return (
      <div style={{ ...CARD, 'text-align': 'center', padding: '40px' }}>
        <p style={{ margin: '0', 'font-size': '15px', color: '#9CA3AF' }}>
          Portfolio is available for professional roles only.
        </p>
      </div>
    );
  }

  return (
    <div style={{ 'max-width': '800px' }}>

      {/* ── Header ────────────────────────────────────────────────────── */}
      <div style={{ display: 'flex', 'align-items': 'center', 'justify-content': 'space-between', 'margin-bottom': '16px' }}>
        <div>
          <p style={{ margin: '0', 'font-size': '22px', 'font-weight': '800', color: '#0D0D2A' }}>My Portfolio</p>
          <p style={{ margin: '4px 0 0', 'font-size': '13px', color: '#6B7280' }}>
            Showcase your work to attract clients.
          </p>
        </div>
        <button type="button" onClick={openCreate} style={BTN_ORANGE}>
          + Add Item
        </button>
      </div>

      {/* ── Create / Edit form ─────────────────────────────────────────── */}
      <Show when={showForm()}>
        <div style={{ ...CARD, 'margin-bottom': '16px', border: '1px solid #FF5E13' }}>
          <p style={{ margin: '0 0 16px', 'font-size': '16px', 'font-weight': '800', color: '#0D0D2A' }}>
            {editId() ? 'Edit Portfolio Item' : 'New Portfolio Item'}
          </p>

          <div style={{ display: 'grid', 'grid-template-columns': '1fr 1fr', gap: '14px' }}>
            <div style={{ 'grid-column': 'span 2' }}>
              <label style={LABEL}>Title <span style={{ color: '#EF4444' }}>*</span></label>
              <input
                type="text"
                placeholder="e.g. Wedding shoot at Udaipur"
                value={form().title}
                onInput={(e) => setField('title', e.currentTarget.value)}
                style={INPUT}
              />
            </div>
            <div style={{ 'grid-column': 'span 2' }}>
              <label style={LABEL}>Description</label>
              <textarea
                rows={3}
                placeholder="Brief description of the work…"
                value={form().description}
                onInput={(e) => setField('description', e.currentTarget.value)}
                style={{ ...INPUT, height: 'auto', padding: '10px 12px', resize: 'vertical' }}
              />
            </div>
            <div style={{ 'grid-column': 'span 2' }}>
              <label style={LABEL}>Tags (comma separated)</label>
              <input
                type="text"
                placeholder="e.g. wedding, outdoor, portrait"
                value={form().tags}
                onInput={(e) => setField('tags', e.currentTarget.value)}
                style={INPUT}
              />
            </div>
          </div>

          <Show when={error()}>
            <p style={{ margin: '12px 0 0', 'font-size': '13px', color: '#EF4444', 'font-weight': '600' }}>
              {error()}
            </p>
          </Show>

          <div style={{ display: 'flex', gap: '10px', 'margin-top': '16px' }}>
            <button
              type="button"
              onClick={handleSave}
              disabled={saving()}
              style={{ ...BTN_PRIMARY, opacity: saving() ? '0.6' : '1' }}
            >
              {saving() ? 'Saving…' : editId() ? 'Update Item' : 'Add Item'}
            </button>
            <button type="button" onClick={cancelForm} style={BTN_GHOST}>
              Cancel
            </button>
          </div>
        </div>
      </Show>

      {/* ── Loading ─────────────────────────────────────────────────────── */}
      <Show when={loading()}>
        <div style={{ ...CARD, 'text-align': 'center', padding: '32px', color: '#9CA3AF', 'font-size': '14px' }}>
          Loading portfolio…
        </div>
      </Show>

      {/* ── Empty state ─────────────────────────────────────────────────── */}
      <Show when={!loading() && items().length === 0 && !showForm()}>
        <div style={{ ...CARD, 'text-align': 'center', padding: '48px 24px' }}>
          <p style={{ margin: '0', 'font-size': '40px' }}>🗂️</p>
          <p style={{ margin: '12px 0 4px', 'font-size': '16px', 'font-weight': '700', color: '#111827' }}>
            No portfolio items yet
          </p>
          <p style={{ margin: '0 0 16px', 'font-size': '13px', color: '#6B7280' }}>
            Add your first work sample to attract clients.
          </p>
          <button type="button" onClick={openCreate} style={BTN_ORANGE}>
            + Add First Item
          </button>
        </div>
      </Show>

      {/* ── Portfolio grid ─────────────────────────────────────────────── */}
      <Show when={!loading() && items().length > 0}>
        <div style={{ display: 'grid', 'grid-template-columns': '1fr 1fr', gap: '12px' }}>
          <For each={items()}>
            {(item) => (
              <div style={{
                ...CARD,
                padding: '16px',
                display: 'flex',
                'flex-direction': 'column',
                gap: '8px',
              }}>
                {/* Placeholder image area */}
                <div style={{
                  height: '120px',
                  'border-radius': '8px',
                  background: '#F3F4F6',
                  display: 'flex',
                  'align-items': 'center',
                  'justify-content': 'center',
                  color: '#D1D5DB',
                  'font-size': '28px',
                }}>
                  🖼️
                </div>

                <p style={{ margin: '0', 'font-size': '14px', 'font-weight': '700', color: '#111827' }}>
                  {item.title}
                </p>

                <Show when={item.description}>
                  <p style={{ margin: '0', 'font-size': '12px', color: '#6B7280', 'line-height': '1.5' }}>
                    {item.description}
                  </p>
                </Show>

                <Show when={item.tags && item.tags.length > 0}>
                  <div style={{ display: 'flex', 'flex-wrap': 'wrap', gap: '4px' }}>
                    <For each={item.tags}>
                      {(tag) => (
                        <span style={{
                          'font-size': '10px',
                          'font-weight': '700',
                          color: '#6B7280',
                          background: '#F3F4F6',
                          border: '1px solid #E5E7EB',
                          'border-radius': '6px',
                          padding: '2px 8px',
                        }}>
                          {tag}
                        </span>
                      )}
                    </For>
                  </div>
                </Show>

                <div style={{ display: 'flex', gap: '8px', 'margin-top': '4px' }}>
                  <button
                    type="button"
                    onClick={() => openEdit(item)}
                    style={{ ...BTN_GHOST, height: '30px', 'font-size': '11px', padding: '0 12px', flex: '1' }}
                  >
                    Edit
                  </button>
                  <button
                    type="button"
                    onClick={() => handleDelete(item.id)}
                    disabled={deleting() === item.id}
                    style={{
                      height: '30px',
                      'border-radius': '8px',
                      border: '1px solid #FECACA',
                      background: '#fff',
                      color: '#EF4444',
                      'font-size': '11px',
                      'font-weight': '700',
                      padding: '0 12px',
                      cursor: 'pointer',
                      flex: '1',
                      opacity: deleting() === item.id ? '0.6' : '1',
                    }}
                  >
                    {deleting() === item.id ? '…' : 'Delete'}
                  </button>
                </div>
              </div>
            )}
          </For>
        </div>
      </Show>
    </div>
  );
}
