package model

// Note represents a note attached to a contact.
// Reference: Chatwoot app/models/note.rb
//
// Table name: notes
//
//  id         uint   primaryKey autoIncrement
//  content    string not null
//  account_id uint   not null  gorm:"index"
//  contact_id uint   not null  gorm:"index"
//  user_id    *uint  gorm:"index"  (optional — nullable)
//  created_at time
//  updated_at time
//  deleted_at gorm.DeletedAt gorm:"index"

import (
	"gorm.io/gorm"
)

// Note is a text note attached to a contact, similar to Chatwoot's Note model.
// Notes allow agents to add internal comments/observations about a contact.
// Content is required; account_id and contact_id are required; user_id is optional.
type Note struct {
	Base
	Content   string `gorm:"type:text;not null" json:"content" binding:"required"`
	AccountID uint   `gorm:"not null;index" json:"account_id"`
	ContactID uint   `gorm:"not null;index" json:"contact_id"`
	UserID    *uint  `gorm:"index" json:"user_id,omitempty"`
	User      *User  `gorm:"foreignKey:UserID" json:"user,omitempty"`

	Account  Account `gorm:"foreignKey:AccountID" json:"-"`
	Contact  Contact `gorm:"foreignKey:ContactID" json:"-"`
}

// TableName returns the database table name for Note.
func (Note) TableName() string {
	return "notes"
}

// BeforeCreate hook: ensure account_id is set from contact's account_id if missing.
// Reference: Chatwoot's `before_validation :ensure_account_id`
func (n *Note) BeforeCreate(db *gorm.DB) error {
	if n.AccountID == 0 && n.ContactID != 0 {
		var contact Contact
		if err := db.First(&contact, n.ContactID).Error; err == nil {
			n.AccountID = contact.AccountID
		}
	}
	return nil
}