#!/usr/bin/env node

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

const supabaseUrl = process.env.SUPABASE_URL;
const supabaseServiceKey = process.env.SUPABASE_SERVICE_KEY;

const supabase = createClient(supabaseUrl, supabaseServiceKey);

async function createVectorFunctions() {
    console.log('🔧 Creating vector similarity search functions...\n');
    
    try {
        // Create the match_document_chunks function
        console.log('📋 Creating match_document_chunks function...');
        const { error: functionError } = await supabase.rpc('exec_sql', {
            sql: `
                CREATE OR REPLACE FUNCTION match_document_chunks(
                    query_embedding vector(1536),
                    match_threshold float,
                    match_count int
                )
                RETURNS TABLE (
                    id uuid,
                    document_id uuid,
                    content text,
                    metadata jsonb,
                    similarity float
                )
                LANGUAGE plpgsql
                AS $$
                BEGIN
                    RETURN QUERY
                    SELECT
                        dc.id,
                        dc.document_id,
                        dc.content,
                        dc.metadata,
                        1 - (dc.embedding <=> query_embedding) as similarity
                    FROM document_chunks dc
                    WHERE 1 - (dc.embedding <=> query_embedding) > match_threshold
                    ORDER BY dc.embedding <=> query_embedding
                    LIMIT match_count;
                END;
                $$;
            `
        });
        
        if (functionError) {
            console.log(`❌ Function creation error: ${functionError.message}`);
        } else {
            console.log('✅ match_document_chunks function created successfully');
        }
        
        console.log('\n🎉 Vector functions created successfully!');
        
    } catch (error) {
        console.log('❌ Error creating vector functions:', error.message);
    }
}

createVectorFunctions();