import { execSync } from 'child_process'
import { readFileSync, writeFileSync } from 'fs'
import { randomUUID } from 'crypto'

const BASE = "/Users/nate.emmert/Documents/github/Siteforge/Verse by Verse with Nate Complete Series"
const CHATBOT_FILE = "/Users/nate.emmert/Documents/github/Siteforge/data/chatbot-content.json"

const FILES = [
  { file: `${BASE}/Done/Verse_by_Verse_with_Nate_Episode02.docx`, ep: 2 },
  { file: `${BASE}/Done/Verse_by_Verse_with_Nate_Episode03.docx`, ep: 3 },
  { file: `${BASE}/Done/Verse_by_Verse_with_Nate_Episode04_Updated.docx`, ep: 4 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode05.docx`, ep: 5 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode06_expanded.docx`, ep: 6 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode07.docx`, ep: 7 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode08.docx`, ep: 8 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode09.docx`, ep: 9 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode10.docx`, ep: 10 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode11.docx`, ep: 11 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode12.docx`, ep: 12 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode13.docx`, ep: 13 },
  { file: `${BASE}/Verse_by_Verse_with_Nate_Episode14.docx`, ep: 14 },
]

function extractText(filePath) {
  const xml = execSync(`unzip -p "${filePath}" word/document.xml 2>/dev/null`, { encoding: 'utf8' })
  return xml
    .replace(/<[^>]+>/g, ' ')
    .replace(/&amp;/g, '&').replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&quot;/g, '"').replace(/&#39;/g, "'")
    .replace(/\s+/g, ' ')
    .trim()
}

function parseEpisode(raw, epNum) {
  // Extract episode subtitle and passage reference from header
  const headerMatch = raw.match(/EPISODE\s+\d+\s*[—\-\u2013\u2014]+\s*(.+?)\s+(Titus\s+[\d:]+(?:\s*[\-\u2013\u2014]+\s*[\d:]+)?)\s*·/i)
  const subtitle = headerMatch ? headerMatch[1].trim().replace(/\s+/g, ' ') : ''
  const passageRef = headerMatch ? headerMatch[2].trim() : 'Titus'
  const episodeTitle = `Episode ${epNum} — ${subtitle || 'Verse by Verse with Nate'}`

  // Find where the actual teaching content starts
  let contentStart = raw.indexOf('SEGMENT 1')
  if (contentStart === -1) contentStart = raw.indexOf('WHO WAS PAUL')
  if (contentStart === -1) contentStart = raw.indexOf('COLD OPEN')
  if (contentStart === -1) contentStart = 400

  const rawContent = raw.slice(contentStart, contentStart + 4000)
  const content = rawContent
    .replace(/\[[^\]]{0,100}\]/g, '')                    // remove [stage directions]
    .replace(/[✝🎙️📖💬🧠💡🔑✅◀▶]/gu, '')              // remove emoji
    .replace(/SEGMENT\s+\d+\s*[—\-\u2013]+\s*/g, '\n\n') // turn SEGMENT headers into breaks
    .replace(/\s{2,}/g, ' ')
    .trim()

  // Build keyword list
  const verseRefs = [...new Set((raw.match(/Titus\s+\d+:\d+/g) || []))].slice(0, 5).map(k => k.toLowerCase())
  const titleWords = subtitle.toLowerCase().replace(/[^a-z0-9\s]/g, ' ').split(/\s+/).filter(w => w.length > 3)
  const keywords = [...new Set([
    'titus', `episode ${epNum}`, passageRef.toLowerCase(),
    ...verseRefs, ...titleWords
  ])].slice(0, 20)

  return {
    id: randomUUID(),
    type: 'episode',
    title: `${episodeTitle} (${passageRef})`,
    content: content.slice(0, 3900),
    keywords,
    createdAt: new Date().toISOString(),
    updatedAt: new Date().toISOString(),
  }
}

// Load existing entries (keep the 8 hand-written ones)
const existing = JSON.parse(readFileSync(CHATBOT_FILE, 'utf8'))
// Remove any previously generated episode entries to avoid duplication
const baseEntries = existing.filter(e => e.type !== 'episode')

const newEntries = []
for (const { file, ep } of FILES) {
  try {
    const raw = extractText(file)
    const entry = parseEpisode(raw, ep)
    newEntries.push(entry)
    console.log(`✓ Ep ${ep}: ${entry.title.slice(0, 80)}`)
  } catch (err) {
    console.error(`✗ Ep ${ep}: ${err.message}`)
  }
}

const combined = [...baseEntries, ...newEntries]
writeFileSync(CHATBOT_FILE, JSON.stringify(combined, null, 2), 'utf8')
console.log(`\nDone. ${newEntries.length} episode entries added. Total: ${combined.length}`)