#!/usr/bin/env python3
"""
Sync Strada inventory to marketplace warehouse_inventory.
Matches by OEM part_number and cross-references.
"""
import os, sys, io
sys.path.insert(0, os.path.join(os.path.dirname(__file__), '..', 'pos'))
from tenant_db import get_tenant_conn, get_master_conn

BODEGA_ID = 7
USER_ID = 1  # admin user in master DB
CURRENCY = 'MXN'

def main():
    tenant_conn = get_tenant_conn(28)
    tenant_cur = tenant_conn.cursor()
    
    # Get active inventory with stock
    tenant_cur.execute("""
        SELECT i.id, i.part_number, i.price_1, i.cost, COALESCE(iss.stock, 0) as stock
        FROM inventory i
        LEFT JOIN inventory_stock_summary iss ON iss.inventory_id = i.id
        WHERE i.is_active = true
    """)
    items = {r[0]: {'pn': r[1], 'price': r[2], 'cost': r[3], 'stock': r[4]} for r in tenant_cur.fetchall()}
    print(f"Active inventory: {len(items)}")
    
    tenant_cur.close()
    tenant_conn.close()
    
    # Get catalog mappings from master
    master = get_master_conn()
    master_cur = master.cursor()
    
    master_cur.execute("SELECT id_part, oem_part_number FROM parts WHERE oem_part_number IS NOT NULL")
    oem_map = {r[1]: r[0] for r in master_cur.fetchall()}
    
    master_cur.execute("SELECT part_id, cross_reference_number FROM part_cross_references")
    cross_map = {r[1]: r[0] for r in master_cur.fetchall()}
    
    print(f"OEM parts: {len(oem_map)}, Cross-references: {len(cross_map)}")
    
    # Build match list
    matched = []
    seen_parts = set()
    for item_id, data in items.items():
        pn = data['pn']
        raw = pn.split('-', 1)[1] if '-' in pn else pn
        
        part_id = oem_map.get(raw) or oem_map.get(pn) or cross_map.get(raw) or cross_map.get(pn)
        if part_id and part_id not in seen_parts:
            seen_parts.add(part_id)
            price = data['price'] or data['cost'] or 0
            stock = data['stock'] or 0
            matched.append((USER_ID, part_id, price, stock, 1, 'Principal', BODEGA_ID, CURRENCY))
    
    print(f"Matched items: {len(matched)}")
    
    if not matched:
        print("Nothing to sync")
        return
    
    # Bulk insert via COPY
    csv_buffer = io.StringIO()
    for row in matched:
        csv_buffer.write(','.join(str(c) for c in row) + '\n')
    csv_buffer.seek(0)
    
    master_cur.copy_expert(
        """COPY warehouse_inventory (user_id, part_id, price, stock_quantity, min_order_quantity, warehouse_location, bodega_id, currency)
        FROM STDIN WITH (FORMAT CSV)""",
        csv_buffer
    )
    
    master.commit()
    master_cur.close()
    master.close()
    
    print(f"Synced {len(matched)} items to warehouse_inventory")

if __name__ == '__main__':
    main()