// Package models contains domain entities.
// No SQL, no JSON tags for external APIs — pure domain.
package models

import (
	"database/sql"
	"time"

	"github.com/lib/pq"
)

// Customer represents a CRM customer
type Customer struct {
	ID         string
	TenantID   string
	Name       string
	Email      string
	Phone      string
	Company    string
	OrgNumber  string
	Status     string
	Source     string
	Tags       []string
	AssignedTo *string
	CreatedAt  time.Time
	UpdatedAt  time.Time
}

// ScanRow scans a sql.Rows into Customer
func (c *Customer) ScanRow(rows *sql.Rows) error {
	var tags pq.StringArray
	err := rows.Scan(&c.ID, &c.Name, &c.Email, &c.Phone, &c.Company, &c.OrgNumber,
		&c.Status, &c.Source, &tags, &c.AssignedTo, &c.CreatedAt, &c.UpdatedAt)
	c.Tags = []string(tags)
	return err
}

// ScanOneRow scans a sql.Row into Customer
func (c *Customer) ScanOneRow(row *sql.Row) error {
	var tags pq.StringArray
	err := row.Scan(&c.ID, &c.Name, &c.Email, &c.Phone, &c.Company, &c.OrgNumber,
		&c.Status, &c.Source, &tags, &c.AssignedTo, &c.CreatedAt, &c.UpdatedAt)
	c.Tags = []string(tags)
	return err
}

// Deal represents a sales opportunity
type Deal struct {
	ID            string
	TenantID      string
	CustomerID    string
	ContactID     *string
	Name          string
	Description   string
	Value         float64
	Currency      string
	Status        string
	Stage         string
	Probability   int
	ExpectedClose *time.Time
	ActualClose   *time.Time
	AssignedTo    *string
	CreatedAt     time.Time
	UpdatedAt     time.Time
}

// ScanRow scans a sql.Rows into Deal
func (d *Deal) ScanRow(rows *sql.Rows) error {
	return rows.Scan(&d.ID, &d.TenantID, &d.CustomerID, &d.ContactID, &d.Name,
		&d.Description, &d.Value, &d.Currency, &d.Status, &d.Stage,
		&d.Probability, &d.ExpectedClose, &d.ActualClose, &d.AssignedTo,
		&d.CreatedAt, &d.UpdatedAt)
}

// ScanOneRow scans a sql.Row into Deal
func (d *Deal) ScanOneRow(row *sql.Row) error {
	return row.Scan(&d.ID, &d.TenantID, &d.CustomerID, &d.ContactID, &d.Name,
		&d.Description, &d.Value, &d.Currency, &d.Status, &d.Stage,
		&d.Probability, &d.ExpectedClose, &d.ActualClose, &d.AssignedTo,
		&d.CreatedAt, &d.UpdatedAt)
}

// Invoice represents a financial invoice
type Invoice struct {
	ID         string
	TenantID   string
	CustomerID string
	Amount     float64
	Currency   string
	Status     string
	DueDate    *time.Time
	PaidAt     *time.Time
	CreatedAt  time.Time
}

// ScanRow scans a sql.Rows into Invoice
func (i *Invoice) ScanRow(rows *sql.Rows) error {
	return rows.Scan(&i.ID, &i.TenantID, &i.CustomerID, &i.Amount, &i.Currency,
		&i.Status, &i.DueDate, &i.PaidAt, &i.CreatedAt)
}

// ScanOneRow scans a sql.Row into Invoice
func (i *Invoice) ScanOneRow(row *sql.Row) error {
	return row.Scan(&i.ID, &i.TenantID, &i.CustomerID, &i.Amount, &i.Currency,
		&i.Status, &i.DueDate, &i.PaidAt, &i.CreatedAt)
}