package wallet

import (
	"context"
	"strings"

	"hyapp/pkg/appcode"
	"hyapp/pkg/xerr"
	"hyapp/services/wallet-service/internal/domain/ledger"
	resourcedomain "hyapp/services/wallet-service/internal/domain/resource"
)

func (s *Service) ListResources(ctx context.Context, query resourcedomain.ListResourcesQuery) ([]resourcedomain.Resource, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	if strings.TrimSpace(query.ResourceType) != "" && !resourcedomain.ValidResourceType(query.ResourceType) {
		return nil, 0, xerr.New(xerr.InvalidArgument, "resource_type is invalid")
	}
	return s.repository.ListResources(ctx, query)
}

func (s *Service) GetResource(ctx context.Context, appCode string, resourceID int64) (resourcedomain.Resource, error) {
	if resourceID <= 0 {
		return resourcedomain.Resource{}, xerr.New(xerr.InvalidArgument, "resource_id is required")
	}
	if s.repository == nil {
		return resourcedomain.Resource{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	ctx = appcode.WithContext(ctx, appcode.Normalize(appCode))
	return s.repository.GetResource(ctx, resourceID)
}

func (s *Service) CreateResource(ctx context.Context, command resourcedomain.ResourceCommand) (resourcedomain.Resource, error) {
	if s.repository == nil {
		return resourcedomain.Resource{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.CreateResource(ctx, command)
}

func (s *Service) UpdateResource(ctx context.Context, command resourcedomain.ResourceCommand) (resourcedomain.Resource, error) {
	if s.repository == nil {
		return resourcedomain.Resource{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.UpdateResource(ctx, command)
}

func (s *Service) SetResourceStatus(ctx context.Context, command resourcedomain.StatusCommand) (resourcedomain.Resource, error) {
	if s.repository == nil {
		return resourcedomain.Resource{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.SetResourceStatus(ctx, command)
}

func (s *Service) DeleteResource(ctx context.Context, command resourcedomain.StatusCommand) (resourcedomain.Resource, error) {
	if s.repository == nil {
		return resourcedomain.Resource{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.DeleteResource(ctx, command)
}

func (s *Service) BatchDeleteResources(ctx context.Context, command resourcedomain.BatchDeleteResourcesCommand) ([]resourcedomain.Resource, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.BatchDeleteResources(ctx, command)
}

func (s *Service) ListResourceGroups(ctx context.Context, query resourcedomain.ListResourceGroupsQuery) ([]resourcedomain.ResourceGroup, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.ListResourceGroups(ctx, query)
}

func (s *Service) GetResourceGroup(ctx context.Context, appCode string, groupID int64) (resourcedomain.ResourceGroup, error) {
	if groupID <= 0 {
		return resourcedomain.ResourceGroup{}, xerr.New(xerr.InvalidArgument, "group_id is required")
	}
	if s.repository == nil {
		return resourcedomain.ResourceGroup{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	ctx = appcode.WithContext(ctx, appcode.Normalize(appCode))
	return s.repository.GetResourceGroup(ctx, groupID)
}

func (s *Service) CreateResourceGroup(ctx context.Context, command resourcedomain.ResourceGroupCommand) (resourcedomain.ResourceGroup, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGroup{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.CreateResourceGroup(ctx, command)
}

func (s *Service) UpdateResourceGroup(ctx context.Context, command resourcedomain.ResourceGroupCommand) (resourcedomain.ResourceGroup, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGroup{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.UpdateResourceGroup(ctx, command)
}

func (s *Service) SetResourceGroupStatus(ctx context.Context, command resourcedomain.StatusCommand) (resourcedomain.ResourceGroup, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGroup{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.SetResourceGroupStatus(ctx, command)
}

func (s *Service) ListGiftConfigs(ctx context.Context, query resourcedomain.ListGiftConfigsQuery) ([]resourcedomain.GiftConfig, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	if query.FilterRegion && query.RegionID < 0 {
		return nil, 0, xerr.New(xerr.InvalidArgument, "region_id is invalid")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.ListGiftConfigs(ctx, query)
}

func (s *Service) ListGiftTypeConfigs(ctx context.Context, query resourcedomain.ListGiftTypeConfigsQuery) ([]resourcedomain.GiftTypeConfig, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.ListGiftTypeConfigs(ctx, query)
}

func (s *Service) GetGiftCatalogVersion(ctx context.Context, appCode string) (int64, error) {
	if s.repository == nil {
		return 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	appCode = appcode.Normalize(appCode)
	ctx = appcode.WithContext(ctx, appCode)
	return s.repository.GetGiftCatalogVersion(ctx, appCode)
}

func (s *Service) CreateGiftConfig(ctx context.Context, command resourcedomain.GiftConfigCommand) (resourcedomain.GiftConfig, error) {
	if s.repository == nil {
		return resourcedomain.GiftConfig{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.CreateGiftConfig(ctx, command)
}

func (s *Service) BatchCreateGiftConfigs(ctx context.Context, appCode string, commands []resourcedomain.GiftConfigCommand, operatorUserID int64) ([]resourcedomain.GiftConfig, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	appCode = appcode.Normalize(appCode)
	ctx = appcode.WithContext(ctx, appCode)
	if len(commands) == 0 {
		return nil, xerr.New(xerr.InvalidArgument, "gift configs are required")
	}
	batchCommands := make([]resourcedomain.GiftConfigCommand, 0, len(commands))
	for _, command := range commands {
		command.AppCode = appCode
		if command.OperatorUserID == 0 {
			command.OperatorUserID = operatorUserID
		}
		batchCommands = append(batchCommands, command)
	}
	return s.repository.BatchCreateGiftConfigs(ctx, batchCommands)
}

func (s *Service) UpdateGiftConfig(ctx context.Context, command resourcedomain.GiftConfigCommand) (resourcedomain.GiftConfig, error) {
	if s.repository == nil {
		return resourcedomain.GiftConfig{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.UpdateGiftConfig(ctx, command)
}

func (s *Service) SetGiftConfigStatus(ctx context.Context, command resourcedomain.StatusCommand) (resourcedomain.GiftConfig, error) {
	if s.repository == nil {
		return resourcedomain.GiftConfig{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.SetGiftConfigStatus(ctx, command)
}

func (s *Service) DeleteGiftConfig(ctx context.Context, command resourcedomain.StatusCommand) (resourcedomain.GiftConfig, error) {
	if s.repository == nil {
		return resourcedomain.GiftConfig{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.DeleteGiftConfig(ctx, command)
}

func (s *Service) UpsertGiftTypeConfig(ctx context.Context, command resourcedomain.GiftTypeConfigCommand) (resourcedomain.GiftTypeConfig, error) {
	if s.repository == nil {
		return resourcedomain.GiftTypeConfig{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.UpsertGiftTypeConfig(ctx, command)
}

func (s *Service) GrantResource(ctx context.Context, command resourcedomain.GrantResourceCommand) (resourcedomain.ResourceGrant, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGrant{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.GrantResource(ctx, command)
}

func (s *Service) GrantResourceGroup(ctx context.Context, command resourcedomain.GrantResourceGroupCommand) (resourcedomain.ResourceGrant, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGrant{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.GrantResourceGroup(ctx, command)
}

func (s *Service) RevokeResourceGrant(ctx context.Context, command resourcedomain.RevokeResourceGrantCommand) (resourcedomain.ResourceGrant, error) {
	if s.repository == nil {
		return resourcedomain.ResourceGrant{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.RevokeResourceGrant(ctx, command)
}

func (s *Service) ListUserResources(ctx context.Context, query resourcedomain.ListUserResourcesQuery) ([]resourcedomain.UserResourceEntitlement, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.ListUserResources(ctx, query)
}

func (s *Service) EquipUserResource(ctx context.Context, command resourcedomain.EquipUserResourceCommand) (resourcedomain.UserResourceEntitlement, error) {
	if s.repository == nil {
		return resourcedomain.UserResourceEntitlement{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	if command.UserID <= 0 || command.ResourceID <= 0 {
		return resourcedomain.UserResourceEntitlement{}, xerr.New(xerr.InvalidArgument, "user_id and resource_id are required")
	}
	resource, err := s.repository.GetResource(ctx, command.ResourceID)
	if err != nil {
		return resourcedomain.UserResourceEntitlement{}, err
	}
	if resourcedomain.NormalizeResourceType(resource.ResourceType) == resourcedomain.TypeVIPTrialCard {
		// 体验卡在 UI 上仍是普通背包物品，但其装备动作会改变最终 VIP 权益。
		// 因此通用入口必须委托专用状态机，不能直接写 equipment 而绕过 App 开关和 VipEffectiveChanged outbox。
		command.RequestID = strings.TrimSpace(command.RequestID)
		command.EntitlementID = strings.TrimSpace(command.EntitlementID)
		if command.RequestID == "" || command.EntitlementID == "" {
			return resourcedomain.UserResourceEntitlement{}, xerr.New(xerr.InvalidArgument, "request_id and entitlement_id are required for vip_trial_card")
		}
		items, listErr := s.repository.ListUserResources(ctx, resourcedomain.ListUserResourcesQuery{
			AppCode:      command.AppCode,
			UserID:       command.UserID,
			ResourceType: resourcedomain.TypeVIPTrialCard,
			ActiveOnly:   true,
		})
		if listErr != nil {
			return resourcedomain.UserResourceEntitlement{}, listErr
		}
		var selected *resourcedomain.UserResourceEntitlement
		for index := range items {
			if items[index].EntitlementID == command.EntitlementID && items[index].ResourceID == command.ResourceID {
				selected = &items[index]
				break
			}
		}
		if selected == nil {
			return resourcedomain.UserResourceEntitlement{}, xerr.New(xerr.NotFound, "vip trial card entitlement not found")
		}
		if _, _, err := s.EquipVipTrialCard(ctx, ledger.EquipVipTrialCardCommand{
			AppCode:       command.AppCode,
			RequestID:     command.RequestID,
			UserID:        command.UserID,
			EntitlementID: command.EntitlementID,
		}); err != nil {
			return resourcedomain.UserResourceEntitlement{}, err
		}
		// 专用事务已经再次校验 entitlement 并提交装备/outbox；这里复用预读完整资源投影满足通用 API 返回契约。
		selected.Equipped = true
		return *selected, nil
	}
	return s.repository.EquipUserResource(ctx, command)
}

func (s *Service) UnequipUserResource(ctx context.Context, command resourcedomain.UnequipUserResourceCommand) (resourcedomain.UnequipUserResourceResult, error) {
	if s.repository == nil {
		return resourcedomain.UnequipUserResourceResult{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	command.ResourceType = resourcedomain.NormalizeResourceType(command.ResourceType)
	if command.ResourceType == resourcedomain.TypeVIPTrialCard {
		// 和装备相同，通用卸下必须发布 VIP 有效态变化，不能只删除通用装备指针。
		unequipped, state, err := s.UnequipVipTrialCard(ctx, ledger.UnequipVipTrialCardCommand{
			AppCode:   command.AppCode,
			RequestID: strings.TrimSpace(command.RequestID),
			UserID:    command.UserID,
		})
		if err != nil {
			return resourcedomain.UnequipUserResourceResult{}, err
		}
		return resourcedomain.UnequipUserResourceResult{
			ResourceType: command.ResourceType,
			Unequipped:   unequipped,
			UpdatedAtMS:  state.EvaluatedAtMS,
		}, nil
	}
	return s.repository.UnequipUserResource(ctx, command)
}

func (s *Service) BatchGetUserEquippedResources(ctx context.Context, query resourcedomain.BatchGetUserEquippedResourcesQuery) ([]resourcedomain.UserEquippedResources, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.BatchGetUserEquippedResources(ctx, query)
}

func (s *Service) ListResourceGrants(ctx context.Context, query resourcedomain.ListResourceGrantsQuery) ([]resourcedomain.ResourceGrant, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	return s.repository.ListResourceGrants(ctx, query)
}

func (s *Service) ListResourceShopItems(ctx context.Context, query resourcedomain.ListResourceShopItemsQuery) ([]resourcedomain.ResourceShopItem, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	if strings.TrimSpace(query.ResourceType) != "" {
		resourceType := resourcedomain.NormalizeResourceType(query.ResourceType)
		if !resourcedomain.ResourceTypeSellableInShop(resourceType) {
			return nil, 0, xerr.New(xerr.InvalidArgument, "resource_type is invalid")
		}
		query.ResourceType = resourceType
	}
	return s.repository.ListResourceShopItems(ctx, query)
}

func (s *Service) UpsertResourceShopItems(ctx context.Context, command resourcedomain.ResourceShopItemsCommand) ([]resourcedomain.ResourceShopItem, error) {
	if s.repository == nil {
		return nil, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.UpsertResourceShopItems(ctx, command)
}

func (s *Service) SetResourceShopItemStatus(ctx context.Context, command resourcedomain.ResourceShopItemStatusCommand) (resourcedomain.ResourceShopItem, error) {
	if s.repository == nil {
		return resourcedomain.ResourceShopItem{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.SetResourceShopItemStatus(ctx, command)
}

func (s *Service) ListResourceShopPurchaseOrders(ctx context.Context, query resourcedomain.ListResourceShopPurchaseOrdersQuery) ([]resourcedomain.ResourceShopPurchaseOrder, int64, error) {
	if s.repository == nil {
		return nil, 0, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	query.AppCode = appcode.Normalize(query.AppCode)
	ctx = appcode.WithContext(ctx, query.AppCode)
	if strings.TrimSpace(query.ResourceType) != "" {
		resourceType := resourcedomain.NormalizeResourceType(query.ResourceType)
		if !resourcedomain.ResourceTypeSellableInShop(resourceType) {
			return nil, 0, xerr.New(xerr.InvalidArgument, "resource_type is invalid")
		}
		query.ResourceType = resourceType
	}
	return s.repository.ListResourceShopPurchaseOrders(ctx, query)
}

func (s *Service) PurchaseResourceShopItem(ctx context.Context, command resourcedomain.ResourceShopPurchaseCommand) (resourcedomain.ResourceShopPurchaseReceipt, error) {
	if strings.TrimSpace(command.CommandID) == "" || command.UserID <= 0 || command.ShopItemID <= 0 {
		return resourcedomain.ResourceShopPurchaseReceipt{}, xerr.New(xerr.InvalidArgument, "resource shop purchase command is incomplete")
	}
	if len(command.CommandID) > 128 {
		return resourcedomain.ResourceShopPurchaseReceipt{}, xerr.New(xerr.InvalidArgument, "command_id is too long")
	}
	if s.repository == nil {
		return resourcedomain.ResourceShopPurchaseReceipt{}, xerr.New(xerr.Unavailable, "wallet repository is not configured")
	}
	command.AppCode = appcode.Normalize(command.AppCode)
	command.CommandID = strings.TrimSpace(command.CommandID)
	ctx = appcode.WithContext(ctx, command.AppCode)
	return s.repository.PurchaseResourceShopItem(ctx, command)
}