import { useState } from 'react'
import {
  BLOCKER_STATUSES,
  BLOCKER_STATUS_LABELS,
} from '../constants/status.js'
import { StatusBadge } from './StatusBadge.jsx'
import { EmptyState } from './EmptyState.jsx'

export function BlockersSection({
  blockers,
  canManage,
  onCreate,
  onUpdateStatus,
  onDelete,
  busy,
  heading = 'Blocker',
  lead = null,
  emptyMessage = 'Keine Blocker.',
}) {
  const [formTitle, setFormTitle] = useState('')
  const [showForm, setShowForm] = useState(false)

  async function handleSubmit(e) {
    e.preventDefault()
    if (!formTitle.trim()) return
    await onCreate({ title: formTitle.trim() })
    setFormTitle('')
    setShowForm(false)
  }

  return (
    <section className="card">
      <div className="section-header">
        <div>
          <h2>{heading}</h2>
          {lead && <p className="section-lead muted">{lead}</p>}
        </div>
        {canManage && (
          <button
            type="button"
            className="btn btn-primary btn-block-mobile"
            onClick={() => setShowForm((v) => !v)}
          >
            {showForm ? 'Abbrechen' : 'Blocker melden'}
          </button>
        )}
      </div>

      {showForm && canManage && (
        <form className="inline-form-block" onSubmit={handleSubmit}>
          <label>
            Titel
            <input
              value={formTitle}
              onChange={(e) => setFormTitle(e.target.value)}
              maxLength={255}
              required
            />
          </label>
          <button type="submit" className="btn btn-primary" disabled={busy}>
            Anlegen
          </button>
        </form>
      )}

      {blockers.length === 0 && <EmptyState message={emptyMessage} />}

      <ul className="item-list">
        {blockers.map((blocker) => (
          <li key={blocker.id} className="list-item card-list-item">
            <div className="list-item-main">
              <strong>{blocker.title}</strong>
              {blocker.description && (
                <p className="list-item-desc">{blocker.description}</p>
              )}
            </div>
            <div className="list-item-meta action-controls">
              <StatusBadge kind="blocker" status={blocker.status} />
              {canManage && (
                <>
                  <select
                    className="inline-select"
                    value={blocker.status}
                    onChange={(e) => onUpdateStatus(blocker.id, e.target.value)}
                    aria-label="Blocker-Status"
                  >
                    {BLOCKER_STATUSES.map((s) => (
                      <option key={s} value={s}>
                        {BLOCKER_STATUS_LABELS[s]}
                      </option>
                    ))}
                  </select>
                  <button
                    type="button"
                    className="btn btn-secondary"
                    onClick={() => onDelete(blocker.id)}
                  >
                    Löschen
                  </button>
                </>
              )}
            </div>
          </li>
        ))}
      </ul>
    </section>
  )
}