// Bible books data with abbreviations
const BIBLE_BOOKS = [
  // Old Testament
  { id: 1, name: 'Genesis', abbr: 'Gen', chapters: 50 },
  { id: 2, name: 'Exodus', abbr: 'Ex', chapters: 40 },
  { id: 3, name: 'Leviticus', abbr: 'Lev', chapters: 27 },
  { id: 4, name: 'Numbers', abbr: 'Num', chapters: 36 },
  { id: 5, name: 'Deuteronomy', abbr: 'Deut', chapters: 34 },
  { id: 6, name: 'Joshua', abbr: 'Josh', chapters: 24 },
  { id: 7, name: 'Judges', abbr: 'Judg', chapters: 21 },
  { id: 8, name: 'Ruth', abbr: 'Ruth', chapters: 4 },
  { id: 9, name: '1 Samuel', abbr: '1Sam', chapters: 31 },
  { id: 10, name: '2 Samuel', abbr: '2Sam', chapters: 24 },
  { id: 11, name: '1 Kings', abbr: '1Kgs', chapters: 22 },
  { id: 12, name: '2 Kings', abbr: '2Kgs', chapters: 25 },
  { id: 13, name: '1 Chronicles', abbr: '1Chr', chapters: 29 },
  { id: 14, name: '2 Chronicles', abbr: '2Chr', chapters: 36 },
  { id: 15, name: 'Ezra', abbr: 'Ezra', chapters: 10 },
  { id: 16, name: 'Nehemiah', abbr: 'Neh', chapters: 13 },
  { id: 17, name: 'Esther', abbr: 'Esth', chapters: 10 },
  { id: 18, name: 'Job', abbr: 'Job', chapters: 42 },
  { id: 19, name: 'Psalms', abbr: 'Ps', chapters: 150 },
  { id: 20, name: 'Proverbs', abbr: 'Prov', chapters: 31 },
  { id: 21, name: 'Ecclesiastes', abbr: 'Eccl', chapters: 12 },
  { id: 22, name: 'Song of Solomon', abbr: 'Song', chapters: 8 },
  { id: 23, name: 'Isaiah', abbr: 'Isa', chapters: 66 },
  { id: 24, name: 'Jeremiah', abbr: 'Jer', chapters: 52 },
  { id: 25, name: 'Lamentations', abbr: 'Lam', chapters: 5 },
  { id: 26, name: 'Ezekiel', abbr: 'Ezek', chapters: 48 },
  { id: 27, name: 'Daniel', abbr: 'Dan', chapters: 12 },
  { id: 28, name: 'Hosea', abbr: 'Hos', chapters: 14 },
  { id: 29, name: 'Joel', abbr: 'Joel', chapters: 3 },
  { id: 30, name: 'Amos', abbr: 'Amos', chapters: 9 },
  { id: 31, name: 'Obadiah', abbr: 'Obad', chapters: 1 },
  { id: 32, name: 'Jonah', abbr: 'Jonah', chapters: 4 },
  { id: 33, name: 'Micah', abbr: 'Mic', chapters: 7 },
  { id: 34, name: 'Nahum', abbr: 'Nah', chapters: 3 },
  { id: 35, name: 'Habakkuk', abbr: 'Hab', chapters: 3 },
  { id: 36, name: 'Zephaniah', abbr: 'Zeph', chapters: 3 },
  { id: 37, name: 'Haggai', abbr: 'Hag', chapters: 2 },
  { id: 38, name: 'Zechariah', abbr: 'Zech', chapters: 14 },
  { id: 39, name: 'Malachi', abbr: 'Mal', chapters: 4 },
  // New Testament
  { id: 40, name: 'Matthew', abbr: 'Matt', chapters: 28 },
  { id: 41, name: 'Mark', abbr: 'Mark', chapters: 16 },
  { id: 42, name: 'Luke', abbr: 'Luke', chapters: 24 },
  { id: 43, name: 'John', abbr: 'John', chapters: 21 },
  { id: 44, name: 'Acts', abbr: 'Acts', chapters: 28 },
  { id: 45, name: 'Romans', abbr: 'Rom', chapters: 16 },
  { id: 46, name: '1 Corinthians', abbr: '1Cor', chapters: 16 },
  { id: 47, name: '2 Corinthians', abbr: '2Cor', chapters: 13 },
  { id: 48, name: 'Galatians', abbr: 'Gal', chapters: 6 },
  { id: 49, name: 'Ephesians', abbr: 'Eph', chapters: 6 },
  { id: 50, name: 'Philippians', abbr: 'Phil', chapters: 4 },
  { id: 51, name: 'Colossians', abbr: 'Col', chapters: 4 },
  { id: 52, name: '1 Thessalonians', abbr: '1Thess', chapters: 5 },
  { id: 53, name: '2 Thessalonians', abbr: '2Thess', chapters: 3 },
  { id: 54, name: '1 Timothy', abbr: '1Tim', chapters: 6 },
  { id: 55, name: '2 Timothy', abbr: '2Tim', chapters: 4 },
  { id: 56, name: 'Titus', abbr: 'Titus', chapters: 3 },
  { id: 57, name: 'Philemon', abbr: 'Phlm', chapters: 1 },
  { id: 58, name: 'Hebrews', abbr: 'Heb', chapters: 13 },
  { id: 59, name: 'James', abbr: 'Jas', chapters: 5 },
  { id: 60, name: '1 Peter', abbr: '1Pet', chapters: 5 },
  { id: 61, name: '2 Peter', abbr: '2Pet', chapters: 3 },
  { id: 62, name: '1 John', abbr: '1John', chapters: 5 },
  { id: 63, name: '2 John', abbr: '2John', chapters: 1 },
  { id: 64, name: '3 John', abbr: '3John', chapters: 1 },
  { id: 65, name: 'Jude', abbr: 'Jude', chapters: 1 },
  { id: 66, name: 'Revelation', abbr: 'Rev', chapters: 22 }
]

export interface SearchResult {
  bookId: number
  bookName: string
  chapter: number
  reference: string
}

export function searchBooks(query: string): SearchResult[] {
  if (!query.trim()) return []

  const lowerQuery = query.toLowerCase()
  const results: SearchResult[] = []

  // Try to parse as "Book Chapter" format (e.g., "Genesis 1", "Gen 1")
  const refMatch = query.match(/^([a-z\s]+)\s*(\d+)?/i)
  if (refMatch) {
    const bookQuery = refMatch[1].toLowerCase().trim()
    const chapterNum = refMatch[2] ? parseInt(refMatch[2]) : 1

    for (const book of BIBLE_BOOKS) {
      if (book.name.toLowerCase().startsWith(bookQuery) ||
          book.abbr.toLowerCase().startsWith(bookQuery)) {
        if (chapterNum <= book.chapters) {
          results.push({
            bookId: book.id,
            bookName: book.name,
            chapter: chapterNum,
            reference: `${book.name} ${chapterNum}`
          })
        }
      }
    }
  }

  // Fuzzy match on book names if exact prefix didn't work
  if (results.length === 0) {
    for (const book of BIBLE_BOOKS) {
      if (book.name.toLowerCase().includes(lowerQuery) ||
          book.abbr.toLowerCase().includes(lowerQuery)) {
        results.push({
          bookId: book.id,
          bookName: book.name,
          chapter: 1,
          reference: book.name
        })
      }
    }
  }

  return results.slice(0, 10) // Return top 10
}

export function parseReference(ref: string): { bookId: number; chapter: number } | null {
  const match = ref.match(/^([a-z\s]+)\s*(\d+)?/i)
  if (!match) return null

  const bookQuery = match[1].toLowerCase().trim()
  const chapterNum = match[2] ? parseInt(match[2]) : 1

  for (const book of BIBLE_BOOKS) {
    if (book.name.toLowerCase().startsWith(bookQuery) ||
        book.abbr.toLowerCase().startsWith(bookQuery)) {
      return {
        bookId: book.id,
        chapter: Math.max(1, Math.min(chapterNum, book.chapters))
      }
    }
  }

  return null
}