package api

type ApiResponse[T any] struct {
	Success bool `json:"success"`
	Data *T `json:"data,omitempty"` // Nullable data
	Error *string `json:"error,omitempty"` // Nullable error message
	Timestamp int64 `json:"timestamp"`
}

type ErrorResponse struct {
	Error string `json:"error"`
	Code *string `json:"code,omitempty"`
	Details map[string]string `json:"details,omitempty"`
	Timestamp int64 `json:"timestamp"`
}

type SuccessResponse struct {
	Message string `json:"message"`
	Timestamp int64 `json:"timestamp"`
}

type HealthResponse struct {
	Status string `json:"status"`
	Version string `json:"version"`
	Uptime int64 `json:"uptime"`
	Database DatabaseHealth `json:"database"`
	BlockChain BlockChainHealth `json:"blockchain"`
}

type DatabaseHealth struct {
	Connected bool `json:"connected"`
	ResponseTime int64 `json:"response_time"`
	ActiveConnections int `json:"active_connections"`
	MaxConnections int `json:"max_connections"`
}

type BlockChainHealth struct {
	LatestBlock int `json:"latest_block"`
	PendingTransactions int `json:"pending_transactions"`
	NetworkHashRate float64 `json:"network_hash_rate"`
	AverageBlockTime int64 `json:"average_block_time"`
}

type PaginationRequest struct {
	Page int `json:"page"`
	PageSize int `json:"page_size"`
	SortBy *string `json:"sort_by,omitempty"`
	SortOrder SortOrder `json:"sort_order"`
}

type PaginatedResponse[T any] struct {
	Data []T `json:"data"`
	Pagination PaginationInfo `json:"pagination"`
}

type PaginationInfo struct {
	CurrentPage int `json:"current_page"`
	PageSize int `json:"page_size"`
	TotalItems int `json:"total_items"`
	TotalPages int `json:"total_pages"`
	HasNext bool `json:"has_next"`
	HasPrevious bool `json:"has_previous"`
}

type SortOrder string

const (
	ASC SortOrder = "ASC"
	DESC SortOrder = "DESC"
)