package dnfbridge

import (
	"context"
	"strconv"

	dnfonlineevent "longheng.io/server/internal/modules/dnf/onlineevent"
)

// handleCurrentSpendTimeClaim 处理「累计在线得好礼」(event 2347) 的「领取」请求，
// 对应客户端指令 CmdPacketOntimeEventRequestReward(285)。
//
// 为什么需要它：本树此前没有注册 285，客户端点「领取」发出的包被当成"未处理指令"
// 静默丢弃且不回包，界面上表现为"点击没有反应"。同时服务端只在活动 tick 里自动
// 结算，所以奖励其实会到账，只是按钮没有任何反馈、界面状态也不刷新。
//
// 本 handler 复用与自动结算完全相同的领取实现 claimCurrentSpendTimeUnlockedStages
// （它是幂等的：已领取的阶段会被跳过），因此：
//   - 已达标的阶段立刻补齐并入账；
//   - 物品回执走 op14，与自动发放同一条路径；
//   - 进度走 op1206，客户端据此刷新阶段/计数显示。
//
// 请求体格式未被确证，因此**不依赖**它的内容：一律尝试领取所有已达标未领取的阶段。
// 这样无论客户端传阶段号、传 0、还是传空体，点击都能得到正确结果。
func (s *Service) handleCurrentSpendTimeClaim(session *gameSession, _ []byte) error {
	if s == nil || session == nil || session.selectedCharacterID == 0 {
		return nil
	}
	if session.spendTime.catalog == nil {
		// 活动目录尚未建立（例如刚登录、描述符还没装）。这不是错误：
		// 首次初始化的自动结算随后会补发。
		s.logGameEvent(session, "game-ontime-event-reward-deferred",
			"char_id", session.selectedCharacterID,
			"reason", "spend_time_catalog_not_ready")
		return nil
	}

	ctx, cancel := context.WithTimeout(context.Background(), currentSpendTimeWriteTimeout)
	defer cancel()

	owner, err := s.currentSpendTimeOwner()
	if err != nil {
		s.logGameEvent(session, "game-ontime-event-reward-rejected",
			"char_id", session.selectedCharacterID, "reason", "owner_unavailable", "error", err)
		return nil
	}

	accountID := s.accountIDForSession(session)
	characterIDText := strconv.Itoa(int(session.selectedCharacterID))
	now := s.gameplayNow()

	session.spendTime.mu.Lock()
	defer session.spendTime.mu.Unlock()

	catalog := session.spendTime.catalog
	snapshot, err := owner.Status(ctx, dnfonlineevent.StatusCommand{
		AccountID:   accountID,
		CharacterID: characterIDText,
		Definition:  catalog.definition,
		ObservedAt:  now,
	})
	if err != nil {
		s.logGameEvent(session, "game-ontime-event-reward-rejected",
			"char_id", session.selectedCharacterID, "reason", "status_failed", "error", err)
		return nil
	}

	snapshot, items, claimErr := s.claimCurrentSpendTimeUnlockedStages(
		ctx, owner, accountID, characterIDText, catalog, snapshot, now)
	if claimErr != nil {
		s.logGameEvent(session, "game-ontime-event-reward-deferred",
			"char_id", session.selectedCharacterID,
			"online_seconds", snapshot.OnlineSeconds,
			"error", claimErr)
	} else {
		session.spendTime.onlineSeconds = snapshot.OnlineSeconds
		session.spendTime.completedStages = currentSpendTimeClaimedStages(catalog.definition, snapshot)
	}

	// 物品回执：与自动发放走同一条 op14 路径。
	if err := s.sendCurrentSpendTimeRewardItemUpdates(session, items, "ontime_event_claim_request"); err != nil {
		s.logGameEvent(session, "game-ontime-event-reward-item-update-failed",
			"char_id", session.selectedCharacterID, "error", err)
	}

	// 进度刷新：客户端据此更新阶段/计数与可领取状态。
	if body, buildErr := buildCurrentSpendTimeProgressBody(
		session.spendTime.onlineSeconds, session.spendTime.completedStages); buildErr != nil {
		s.logGameEvent(session, "game-ontime-event-reward-progress-build-failed",
			"char_id", session.selectedCharacterID, "error", buildErr)
	} else if sendErr := s.sendGameUpperRawClass(
		session, currentSpendTimeProgressMsgID, body, 0); sendErr != nil {
		s.logGameEvent(session, "game-ontime-event-reward-progress-send-failed",
			"char_id", session.selectedCharacterID, "error", sendErr)
	}

	s.logGameEvent(session, "game-ontime-event-reward-answered",
		"char_id", session.selectedCharacterID,
		"online_seconds", session.spendTime.onlineSeconds,
		"completed_stages", session.spendTime.completedStages,
		"granted_items", len(items))
	return nil
}