move_lines_to_fix = env['stock.move.line'].search([
  ('state', '=', 'done'),
  ('product_uom_qty', '!=', 0),
]).write({
  'product_uom_qty': 0,
})

# Use as server action to repair consistancies in quant reservation.
# Usefull for errors like 'Cannot unreserve more product than you have in stock'

# Executed by support - JPM - 2019-11-12 - opw-2120582

quants = env['stock.quant'].search([])
move_line_ids = []
warning = ''
for quant in quants:
    move_lines = env["stock.move.line"].search([
        ('product_id', '=', quant.product_id.id),
        ('location_id', '=', quant.location_id.id),
        ('lot_id', '=', quant.lot_id.id),
        ('package_id', '=', quant.package_id.id),
        ('owner_id', '=', quant.owner_id.id),
        ('product_qty', '!=', 0)
    ])
    move_line_ids += move_lines.ids
    reserved_on_move_lines = sum(move_lines.mapped('product_qty'))
    move_line_str = str.join(', ', [str(move_line_id) for move_line_id in move_lines.ids])

    if quant.location_id.should_bypass_reservation():
        # If a quant is in a location that should bypass the reservation, its `reserved_quantity` field
        # should be 0.
        if quant.reserved_quantity != 0:
            quant.write({'reserved_quantity': 0})
    else:
        # If a quant is in a reservable location, its `reserved_quantity` should be exactly the sum
        # of the `product_qty` of all the partially_available / assigned move lines with the same
        # characteristics.
        if quant.reserved_quantity == 0:
            if move_lines:
                move_lines.with_context(bypass_reservation_update=True).write({'product_uom_qty': 0})
        elif quant.reserved_quantity < 0:
            quant.write({'reserved_quantity': 0})
            if move_lines:
                move_lines.with_context(bypass_reservation_update=True).write({'product_uom_qty': 0})
        else:
            if reserved_on_move_lines != quant.reserved_quantity:
                move_lines.with_context(bypass_reservation_update=True).write({'product_uom_qty': 0})
                quant.write({'reserved_quantity': 0})
            else:
              if any(move_line.product_qty < 0 for move_line in move_lines):
                move_lines.with_context(bypass_reservation_update=True).write({'product_uom_qty': 0})
                quant.write({'reserved_quantity': 0})

move_lines = env['stock.move.line'].search([
    ('product_id.type', '=', 'product'),
    ('product_qty', '!=', 0),
    ('id', 'not in', move_line_ids),
])

move_lines_to_unreserve = []

for move_line in move_lines:
    if not move_line.location_id.should_bypass_reservation():
       move_lines_to_unreserve.append(move_line.id)

if len(move_lines_to_unreserve) > 1:
    env.cr.execute(""" UPDATE stock_move_line SET product_uom_qty = 0, product_qty = 0 WHERE id in %s ;""" % (tuple(move_lines_to_unreserve), ))
elif len(move_lines_to_unreserve) == 1:
    env.cr.execute(""" UPDATE stock_move_line SET product_uom_qty = 0, product_qty = 0 WHERE id = %s ;""" % (move_lines_to_unreserve[0]))