const { createClient } = require('@supabase/supabase-js');
require('dotenv').config();

const supabase = createClient(process.env.SUPABASE_URL, process.env.SUPABASE_SERVICE_KEY);

async function checkTableSchema() {
  console.log('🔧 Checking document_chunks table...');
  
  // Try to select from the table to see what columns exist
  const { data, error } = await supabase
    .from('document_chunks')
    .select('*')
    .limit(1);
    
  if (error) {
    console.log('❌ Error accessing table:', error.message);
    if (error.message.includes('does not exist')) {
      console.log('');
      console.log('🛠️  Table does not exist. Need to create it with:');
      console.log(`
CREATE TABLE document_chunks (
  id UUID DEFAULT gen_random_uuid() PRIMARY KEY,
  document_id TEXT NOT NULL,
  content TEXT NOT NULL,
  embedding VECTOR(1536),
  metadata JSONB DEFAULT '{}',
  chunk_index INTEGER NOT NULL,
  created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
  updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
);

CREATE INDEX idx_document_chunks_document_id ON document_chunks(document_id);
CREATE INDEX idx_document_chunks_embedding ON document_chunks USING ivfflat (embedding vector_cosine_ops);
      `);
    }
    return;
  }
  
  if (data && data.length > 0) {
    console.log('✅ Table exists');
    console.log('📋 Available columns:', Object.keys(data[0]));
    
    const hasChunkIndex = 'chunk_index' in data[0];
    const hasChunkIndexCamel = 'chunkIndex' in data[0];
    
    console.log('Has chunk_index:', hasChunkIndex);
    console.log('Has chunkIndex:', hasChunkIndexCamel);
    
    if (!hasChunkIndex && !hasChunkIndexCamel) {
      console.log('⚠️  Missing chunk index column.');
      console.log('🛠️  Run this SQL to fix:');
      console.log('ALTER TABLE document_chunks ADD COLUMN chunk_index INTEGER;');
    }
  } else {
    console.log('📋 Table exists but is empty');
    console.log('🧪 Testing insert to see schema...');
    
    // Try to insert a test record to see what columns are expected
    const { error: insertError } = await supabase
      .from('document_chunks')
      .insert({
        document_id: 'test',
        content: 'test content',
        chunk_index: 1,
        metadata: {}
      })
      .select();
      
    if (insertError) {
      console.log('❌ Insert failed:', insertError.message);
      if (insertError.message.includes('chunkIndex')) {
        console.log('⚠️  Table expects camelCase chunkIndex but code uses snake_case chunk_index');
      } else if (insertError.message.includes('chunk_index')) {
        console.log('⚠️  Missing chunk_index column');
      }
    } else {
      console.log('✅ Test insert successful');
      // Clean up test record
      await supabase
        .from('document_chunks')
        .delete()
        .eq('document_id', 'test');
    }
  }
}

checkTableSchema();