"""Calcul du delai de reconnexion automatique (backoff exponentiel plafonne)."""
import sys, pathlib
sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent.parent))

from app.services.reconnect import compute_backoff_delay

print("=== 1. Progression exponentielle ===")
delays = [compute_backoff_delay(n, initial_delay=5) for n in range(1, 6)]
print("  delais:", delays)
assert delays == [5, 10, 20, 40, 60], delays  # le 5e (80s) est plafonne a 60s
print("  OK")

print()
print("=== 2. Plafond respecte au-dela ===")
assert compute_backoff_delay(10, initial_delay=5, max_delay=60) == 60
assert compute_backoff_delay(20, initial_delay=5, max_delay=120) == 120
print("  OK")

print()
print("=== 3. Tentative < 1 traitee comme la premiere ===")
assert compute_backoff_delay(0, initial_delay=5) == 5
assert compute_backoff_delay(-3, initial_delay=5) == 5
print("  OK")

print()
print("=== 4. Delai initial personnalise ===")
assert compute_backoff_delay(1, initial_delay=10) == 10
assert compute_backoff_delay(2, initial_delay=10) == 20
print("  OK")

print()
print("BACKOFF DE RECONNEXION : TOUS LES TESTS OK")