"""Debug: check a specific unupdated invoice and test the exact match logic."""
import frappe, pymysql, os, sys
sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 1)
os.chdir("/home/frappe/frappe-bench/sites")
frappe.init(site="erp.gigafibre.ca", sites_path=".")
frappe.connect()

DEFAULT_INCOME = "Autres produits d'exploitation - T"

# Find an invoice that STILL has default income (was never updated)
r = frappe.db.sql("""
    SELECT si.name, si.legacy_invoice_id, sii.idx, sii.item_name, sii.income_account
    FROM "tabSales Invoice" si
    JOIN "tabSales Invoice Item" sii ON sii.parent = si.name
    WHERE sii.income_account = %s AND si.legacy_invoice_id > 0
    ORDER BY si.legacy_invoice_id DESC
    LIMIT 5
""", (DEFAULT_INCOME,))

for row in r:
    print(f"  inv={row[0]} legacy_id={row[1]} idx={row[2]} acct={row[4]} name={row[3][:40]}")

if not r:
    print("All items already updated!")
    frappe.destroy()
    exit()

# Take one and test the mapping
test_inv = r[0][0]
test_lid = int(r[0][1])
print(f"\nTesting invoice {test_inv}, legacy_id={test_lid}")

# Get all items for this invoice
items_erp = frappe.db.sql("""
    SELECT name, idx, item_name, income_account FROM "tabSales Invoice Item"
    WHERE parent = %s ORDER BY idx
""", (test_inv,))
print(f"  ERPNext items: {len(items_erp)}")
for item in items_erp:
    print(f"    idx={item[1]} acct={item[3]} {item[2][:50]}")

# Check legacy items
legacy = pymysql.connect(
    host="legacy-db", user="facturation", password="VD67owoj",
    database="gestionclient", cursorclass=pymysql.cursors.DictCursor
)
with legacy.cursor() as cur:
    cur.execute("""SELECT id, sku, product_name FROM invoice_item WHERE invoice_id = %s ORDER BY id""", (test_lid,))
    litems = cur.fetchall()
legacy.close()
print(f"\n  Legacy items: {len(litems)}")
for i, li in enumerate(litems, 1):
    print(f"    pos={i} sku={li['sku']} {li['product_name'][:50]}")

# Now build the map and check
legacy2 = pymysql.connect(
    host="legacy-db", user="facturation", password="VD67owoj",
    database="gestionclient", cursorclass=pymysql.cursors.DictCursor
)
with legacy2.cursor() as cur:
    cur.execute("""SELECT p.sku, pc.num_compte FROM product p JOIN product_cat pc ON p.category = pc.id
                   WHERE p.sku IS NOT NULL AND p.sku != '' AND pc.num_compte IS NOT NULL""")
    sku_to_gl_num = {r['sku']: str(int(r['num_compte'])) for r in cur.fetchall() if r['num_compte']}
legacy2.close()

accts = frappe.db.sql("""SELECT account_number, name FROM "tabAccount"
    WHERE root_type IN ('Income','Expense') AND company='TARGO' AND is_group=0
    AND account_number IS NOT NULL AND account_number != ''""")
gl_by_number = {r[0]: r[1] for r in accts}
sku_to_income = {sku: gl_by_number[num] for sku, num in sku_to_gl_num.items() if num in gl_by_number}

# Build what the script builds
inv_item_map = {}
for i, li in enumerate(litems, 1):
    sku = li['sku'] or ''
    acct = sku_to_income.get(sku)
    if acct:
        inv_item_map[i] = acct
        print(f"  Mapped: idx={i} sku={sku} → {acct}")

print(f"\n  Would update {len(inv_item_map)} of {len(items_erp)} items")

frappe.destroy()