'use client'

/**
 * RemediationPlan — Abstellmaßnahmen + Ticket-Formulierung.
 *
 * Aus den offenen Punkten (result.results, Haupt-Engine) je Finding eine
 * Maßnahme + einen fertigen Ticket-Text ableiten und übergabebereit machen
 * (Kopieren / JSON-Export). SCOPE: BreakPilot formuliert NUR — Ticketsystem,
 * Jira-Sync und Feedback-Loop baut ein anderes Team. Keine zweite Engine.
 */

import React, { useState } from 'react'

import { DOC_TYPE_LABELS, type DocResult } from './ChecklistView'

type Priority = 'Hoch' | 'Mittel' | 'Niedrig'

interface Remediation {
  docType: string
  docLabel: string
  checkLabel: string
  action: string
  ticketTitle: string
  ticketBody: string
  priority: Priority
}

const PRIO_RANK: Record<Priority, number> = { Hoch: 0, Mittel: 1, Niedrig: 2 }
const PRIO_COLOR: Record<Priority, string> = {
  Hoch: 'bg-red-100 text-red-700',
  Mittel: 'bg-amber-100 text-amber-700',
  Niedrig: 'bg-blue-100 text-blue-700',
}

function toPriority(sev: string): Priority {
  const s = (sev || '').toUpperCase()
  if (s === 'HIGH' || s === 'CRITICAL') return 'Hoch'
  if (s === 'MEDIUM') return 'Mittel'
  return 'Niedrig'
}

function buildRemediations(docs: DocResult[]): Remediation[] {
  const out: Remediation[] = []
  for (const d of docs) {
    if (d.error) continue
    const docLabel = DOC_TYPE_LABELS[d.doc_type] || d.doc_type
    const failed = d.checks.filter(
      c => !c.passed && !c.skipped && c.severity !== 'INFO',
    )
    for (const c of failed) {
      const action = c.hint || `${c.label} im ${docLabel} ergänzen.`
      out.push({
        docType: d.doc_type,
        docLabel,
        checkLabel: c.label,
        action,
        ticketTitle: `Compliance: ${docLabel} – ${c.label}`,
        ticketBody:
          `Dokument: ${docLabel}\nPrüfpunkt: ${c.label}\n` +
          `Status: nicht erfüllt\nMaßnahme: ${action}`,
        priority: toPriority(c.severity),
      })
    }
  }
  return out.sort((a, b) => PRIO_RANK[a.priority] - PRIO_RANK[b.priority])
}

export function RemediationPlan({ results }: { results: any }) {
  const items = buildRemediations(results.results || [])
  const [copied, setCopied] = useState<number | null>(null)

  if (items.length === 0) {
    return (
      <div className="border rounded-lg p-4 text-sm text-green-700 bg-green-50">
        Keine offenen Pflichtangaben — kein Handlungsbedarf.
      </div>
    )
  }

  function copyTicket(i: number, body: string) {
    navigator.clipboard?.writeText(body)
    setCopied(i)
    window.setTimeout(() => setCopied(null), 1500)
  }

  function exportAll() {
    const payload = items.map(it => ({
      title: it.ticketTitle,
      body: it.ticketBody,
      priority: it.priority,
      doc_type: it.docType,
    }))
    const blob = new Blob([JSON.stringify(payload, null, 2)], {
      type: 'application/json',
    })
    const url = URL.createObjectURL(blob)
    const a = document.createElement('a')
    a.href = url
    a.download = 'breakpilot-tickets.json'
    a.click()
    URL.revokeObjectURL(url)
  }

  return (
    <div className="border rounded-lg overflow-hidden">
      <div className="px-4 py-2.5 bg-slate-50 border-b flex items-center justify-between gap-2">
        <h3 className="text-sm font-semibold text-gray-800">
          Abstellmaßnahmen &amp; Tickets ({items.length})
        </h3>
        <button
          onClick={exportAll}
          className="text-xs px-2.5 py-1 rounded border border-gray-200 hover:bg-gray-100 text-gray-600"
        >
          Alle als JSON exportieren
        </button>
      </div>
      <div className="divide-y divide-gray-100">
        {items.map((it, i) => (
          <div key={i} className="px-4 py-3 space-y-1.5">
            <div className="flex items-center gap-2 flex-wrap">
              <span className={`text-[10px] font-semibold px-1.5 py-0.5 rounded ${PRIO_COLOR[it.priority]}`}>
                {it.priority}
              </span>
              <span className="text-sm font-medium text-gray-800">
                {it.docLabel}: {it.checkLabel}
              </span>
            </div>
            <div className="text-xs text-gray-600">{it.action}</div>
            <button
              onClick={() => copyTicket(i, it.ticketBody)}
              className="text-xs px-2 py-1 rounded bg-purple-50 text-purple-700 border border-purple-200 hover:bg-purple-100"
            >
              {copied === i ? 'Kopiert ✓' : 'Ticket-Text kopieren'}
            </button>
          </div>
        ))}
      </div>
    </div>
  )
}