// Greek/Hebrew word study for the chunk: compact cards (one open for editing at a
// time), Strong's lookup, and suggestions from the passage.
import { useState } from 'react';
import DOMPurify from 'dompurify';
import { externalLookupLinks, speakOriginalWord } from '../../utils/wordStudy.js';

const inputCls = 'mt-1 block w-full rounded-lg border border-[var(--r-line)] bg-[var(--r-bg)] px-2.5 py-1.5 text-sm text-[var(--r-text)] focus:outline-none focus:ring-2 focus:ring-[var(--r-line)]';
const btn = 'rounded-lg border border-[var(--r-line)] px-2.5 py-1.5 text-xs hover:bg-black/5 disabled:opacity-50';

function WordCard({ word, open, onToggle, chunkId, wordStudy }) {
  const { updateChunkWord, lookupWord, removeGreekWord } = wordStudy;
  const set = (patch) => updateChunkWord(chunkId, word.id, patch);
  const field = (label, key, placeholder) => (
    <label className="block text-xs text-[var(--r-sub)]">{label}
      <input type="text" value={word[key] ?? ''} placeholder={placeholder} onChange={(e) => set({ [key]: e.target.value })} className={inputCls} />
    </label>
  );
  const notFound = (word.shortDefinition === 'No definition found.' || word.shortDefinition === 'Lookup failed.') && !word.lexeme && !word.definitionHtml && word.query.trim();
  return (
    <div className={`rounded-xl border ${open ? 'border-[var(--r-accent)]' : 'border-[var(--r-line)]'}`}>
      <button type="button" onClick={onToggle} aria-expanded={open} className="flex w-full items-baseline gap-2 px-3 py-2 text-left">
        <span className="font-serif text-lg leading-tight">{word.lexeme || <span className="font-sans text-sm text-[var(--r-sub)]">New word</span>}</span>
        <span className="min-w-0 flex-1 truncate text-xs text-[var(--r-sub)]">{[word.transliteration, word.englishGloss || word.shortDefinition].filter(Boolean).join(' · ')}</span>
        {word.strongNumber && <span className="shrink-0 rounded-full bg-[var(--r-bar)] px-2 py-0.5 text-[10px]">{word.strongNumber}</span>}
      </button>
      {open && (
        <div className="space-y-3 border-t border-[var(--r-line)] px-3 py-3">
          <label className="block text-xs text-[var(--r-sub)]">Strong’s number or English gloss
            <input type="text" value={word.query} onChange={(e) => set({ query: e.target.value })}
              onKeyDown={(e) => { if (e.key === 'Enter') { e.preventDefault(); lookupWord(chunkId, word.id, 'greek'); } }}
              placeholder="G4102, H7225, 4102, or a word" className={inputCls} />
          </label>
          <div className="flex flex-wrap gap-2">
            <button type="button" onClick={() => lookupWord(chunkId, word.id, 'greek')} className={`${btn} bg-[var(--r-text)] text-[var(--r-bg)] hover:opacity-90`}>{word.loading ? 'Looking up...' : 'Look up Greek'}</button>
            <button type="button" onClick={() => lookupWord(chunkId, word.id, 'hebrew')} className={btn}>{word.loading ? 'Looking up...' : 'Look up Hebrew'}</button>
            {word.lexeme && <button type="button" onClick={() => speakOriginalWord(word.lexeme, word.strongNumber)} className={btn} title="Hear pronunciation">Speak</button>}
            <button type="button" onClick={() => removeGreekWord(chunkId, word.id)} className={`${btn} ml-auto text-[var(--r-danger,#b42318)]`}>Delete</button>
          </div>
          <div className="grid grid-cols-2 gap-2">
            {field(word.strongNumber?.startsWith('H') ? 'Hebrew word' : 'Greek word', 'lexeme')}
            {field('Transliteration', 'transliteration')}
            {field('Part of speech', 'partOfSpeech', 'e.g. Noun')}
            {field('English word', 'englishGloss', 'e.g. grace')}
          </div>
          {field('Short definition', 'shortDefinition')}
          {word.definitionHtml && (
            <details className="rounded-lg border border-[var(--r-line)] p-2.5">
              <summary className="cursor-pointer text-xs font-medium">Extended definition</summary>
              <div className="mt-2 text-[13px] leading-relaxed" dangerouslySetInnerHTML={{ __html: DOMPurify.sanitize(word.definitionHtml) }} />
            </details>
          )}
          {notFound ? (
            <div className="rounded-lg border border-[var(--r-line)] p-2.5">
              <p className="mb-1.5 text-xs text-[var(--r-sub)]">Not found in BDBT — look it up manually:</p>
              <div className="flex flex-wrap gap-1.5">
                {externalLookupLinks(word.query).map(({ label, url }) => (
                  <a key={label} href={url} target="_blank" rel="noreferrer" className={btn}>{label} ↗</a>
                ))}
                <button type="button" onClick={() => navigator.clipboard.writeText(word.query.trim())} className={btn}>Copy “{word.query.trim()}”</button>
              </div>
            </div>
          ) : null}
        </div>
      )}
    </div>
  );
}

export default function WordStudyTab({ wordStudy, chunk, openWordId, setOpenWordId }) {
  const { suggestingGreekForChunkId, suggestingHebrewForChunkId, suggestGreekWordsForChunk, suggestHebrewWordsForChunk, addGreekWord } = wordStudy;
  return (
    <div>
      <div className="mb-3 flex flex-wrap gap-2">
        <button type="button" onClick={() => suggestGreekWordsForChunk(chunk.id)} disabled={suggestingGreekForChunkId === chunk.id} className={btn}
          title="Auto-populate Greek words that actually appear in this passage">{suggestingGreekForChunkId === chunk.id ? 'Suggesting…' : 'Suggest Greek'}</button>
        <button type="button" onClick={() => suggestHebrewWordsForChunk(chunk.id)} disabled={suggestingHebrewForChunkId === chunk.id} className={btn}
          title="Suggest Hebrew words for Old Testament passages">{suggestingHebrewForChunkId === chunk.id ? 'Suggesting…' : 'Suggest Hebrew'}</button>
        <button type="button" onClick={() => setOpenWordId(addGreekWord(chunk.id))} className={`${btn} ml-auto bg-[var(--r-text)] text-[var(--r-bg)] hover:opacity-90`}>Add word</button>
      </div>
      <div className="space-y-2">
        {chunk.greekWords.length === 0 && (
          <p className="rounded-xl border border-dashed border-[var(--r-line)] p-4 text-sm text-[var(--r-sub)]">
            No words yet. Open a verse’s original words in the text and click one, or add a word to look it up.
          </p>
        )}
        {chunk.greekWords.map((w) => (
          <WordCard key={w.id} word={w} open={openWordId === w.id} chunkId={chunk.id} wordStudy={wordStudy}
            onToggle={() => setOpenWordId(openWordId === w.id ? null : w.id)} />
        ))}
      </div>
    </div>
  );
}