package entities

import (
	"time"

	"github.com/google/uuid"

	"gorm.io/gorm"
)

type Expense struct {
	ID              uuid.UUID `gorm:"type:uuid;primary_key;default:gen_random_uuid()" json:"id"`
	OrganizationID  uuid.UUID `gorm:"type:uuid;not null;index" json:"organization_id"`
	OutletID        uuid.UUID `gorm:"type:uuid;not null;index" json:"outlet_id"`
	Receiver        string    `gorm:"not null;size:255" json:"receiver"`
	TransactionDate time.Time `gorm:"type:date;not null" json:"transaction_date"`
	CodeNumber      string    `gorm:"not null;size:50" json:"code_number"`
	Status          string    `gorm:"not null;size:20;default:'draft'" json:"status"`
	Description     *string   `gorm:"type:text" json:"description"`
	Tax             float64   `gorm:"type:decimal(15,2);not null;default:0" json:"tax"`
	Total           float64   `gorm:"type:decimal(15,2);not null;default:0" json:"total"`
	Reserved1       *string   `gorm:"type:text" json:"reserved1"`
	CreatedAt       time.Time `gorm:"autoCreateTime" json:"created_at"`
	UpdatedAt       time.Time `gorm:"autoUpdateTime" json:"updated_at"`

	Organization *Organization `gorm:"foreignKey:OrganizationID" json:"organization,omitempty"`
	Outlet       *Outlet       `gorm:"foreignKey:OutletID" json:"outlet,omitempty"`
	Items        []ExpenseItem `gorm:"foreignKey:ExpenseID" json:"items,omitempty"`
}

type ExpenseAnalytics struct {
	Summary      ExpenseAnalyticsSummary
	Data         []ExpenseAnalyticsData
	CategoryData []ExpenseAnalyticsCategoryData
	ItemData     []ExpenseAnalyticsItemData
}

type ExpenseAnalyticsSummary struct {
	TotalExpenses       float64
	TotalExpenseCount   int64
	TotalTax            float64
	AverageExpenseValue float64
	TotalCategories     int64
	TotalItems          int64
}

type ExpenseAnalyticsData struct {
	Date         time.Time
	Expenses     float64
	ExpenseCount int64
	Tax          float64
	Items        int64
	Categories   int64
}

type ExpenseAnalyticsCategoryData struct {
	ChartOfAccountID   uuid.UUID
	ChartOfAccountName string
	TotalAmount        float64
	ExpenseCount       int64
	ItemCount          int64
}

type ExpenseAnalyticsItemData struct {
	Item         string
	TotalAmount  float64
	ExpenseCount int64
	ItemCount    int64
}

func (e *Expense) BeforeCreate(tx *gorm.DB) error {
	if e.ID == uuid.Nil {
		e.ID = uuid.New()
	}
	return nil
}

func (Expense) TableName() string {
	return "expenses"
}