package redisstate

// releaseAllByUserScript atomically clears every registered, reservation,
// and pending_registration binding owned by one user. Inputs:
//
//	KEYS[1] — user_registered set key
//	KEYS[2] — user_reservations set key
//	KEYS[3] — pending_index sorted-set key
//	ARGV[1] — Lobby Redis key prefix (e.g. "lobby:")
//
// The script returns a three-entry table `{registeredCount,
// reservationsTotal, pendingCount}` so callers can emit telemetry without
// a second round-trip. reservationsTotal includes both reserved and
// pending_registration entries; pendingCount is the pending-only subset.
const releaseAllByUserScript = `
local userRegisteredKey = KEYS[1]
local userReservationsKey = KEYS[2]
local pendingIndexKey = KEYS[3]
local prefix = ARGV[1]

local registered = redis.call('SMEMBERS', userRegisteredKey)
for _, canonical in ipairs(registered) do
  redis.call('DEL', prefix .. 'race_names:registered:' .. canonical)
  redis.call('DEL', prefix .. 'race_names:canonical_lookup:' .. canonical)
end
local registeredCount = #registered
if registeredCount > 0 then
  redis.call('DEL', userRegisteredKey)
end

local reservations = redis.call('SMEMBERS', userReservationsKey)
local pendingCount = 0
for _, member in ipairs(reservations) do
  local sep = string.find(member, ':', 1, true)
  if sep then
    local encGame = string.sub(member, 1, sep - 1)
    local encCanonical = string.sub(member, sep + 1)
    redis.call('DEL', prefix .. 'race_names:reservations:' .. encGame .. ':' .. encCanonical)
    local pendingRemoved = redis.call('ZREM', pendingIndexKey, member)
    if pendingRemoved == 1 then
      pendingCount = pendingCount + 1
    end
    redis.call('DEL', prefix .. 'race_names:canonical_lookup:' .. encCanonical)
  end
end
local reservationsTotal = #reservations
if reservationsTotal > 0 then
  redis.call('DEL', userReservationsKey)
end

return {registeredCount, reservationsTotal, pendingCount}
`