package service


import (
	"time"
)

// --- Type Aliases ---

// UserID is a type alias for clarity, representing foreign keys to the User service
type UserID uint32

// TransactionID is a type alias for clarity, representing foreign keys to the Transaction service
type TransactionID uint32

// CampaignID is a type alias for clarity, representing primary keys for Campaigns
type CampaignID uint32

// DonationID is a type alias for clarity, representing primary keys for Donations
type DonationID uint32

// --- Campaign Module Entities ---

// CampaignStatus represents the possible states of a campaign
type CampaignStatus string

const (
	StatusActive    CampaignStatus = "active"
	StatusCompleted CampaignStatus = "completed"
	StatusCancelled CampaignStatus = "cancelled"
	StatusExpired   CampaignStatus = "expired" // New status for deadlines
)

// Campaign represents a fundraising campaign entity
type Campaign struct {
	ID                 CampaignID     `json:"id"`
	Title              string         `json:"title"`
	Description        string         `json:"description"`
	GoalAmount         float64        `json:"goal_amount"` // Using float64 for decimal, consider using a dedicated decimal type for precision
	RaisedAmount       float64        `json:"raised_amount"`
	Status             CampaignStatus `json:"status"`
	CreatedAt          time.Time      `json:"created_at"`
	DeadlineAt         *time.Time     `json:"deadline_at,omitempty"` // Pointer to time.Time, allows nil for no deadline. omitempty hides if nil.
	AdminID            UserID         `json:"admin_id"`              // Foreign Key to User service
	InitiatedByUserID  *UserID        `json:"initiated_by_user_id,omitempty"` // Pointer to UserID, allows nil. omitempty hides if nil.
}