package models

import (
	"time"

	"gorm.io/gorm"
)

// DBParticipant is a model that stores raw 'participant' payloads from GenesysCloud websockets and API requests.
//
//   - The ExtractLive function handles the conversion from JSON data (map) into formatted JSON string for websocket payloads.
//   - The ExtractWithoutAttributes function handles the conversion from JSON data (map) into formatted JSON string for gcq-details requests.
//
// Table Schema:
//
//	Primary Key: Id
//	Indexes: ConnectedTime, ConversationId, EndTime, Id, Name, Purpose
//	JSON Fields: Attributes, MediaRoles, Wrapup
//
// GORM Specifics:
//   - Can be preloaded with Sessions []DBSession
//   - Can be preloaded with Calls []DBCall
//   - Can be preloaded with User *GCUser
//   - BeforeSave function, converts UserId into 'nil' if an empty string is returned, this prevents foreign key violations.
type DBParticipant struct {
	Address                          *string
	Attributes                       *string    `gorm:"type:json"`
	ConnectedTime                    *time.Time `gorm:"index"`
	ConversationId                   string     `gorm:"foreignKey;index"`
	EndTime                          *time.Time `gorm:"index"`
	ExternalContactId                *string
	ExternalContactInitialDivisionId *string
	Id                               string  `gorm:"primaryKey;index"`
	MediaRoles                       *string `gorm:"type:json"`
	Name                             *string `gorm:"index"`
	Purpose                          *string `gorm:"index"`
	QueueId                          *string
	UserId                           *string
	Wrapup                           *string `gorm:"type:json"`
	WrapupExpected                   *bool
	WrapupRequired                   *bool

	Sessions []DBSession `gorm:"foreignKey:ParticipantId;references:Id"`
	Calls    []DBCall    `gorm:"foreignKey:ParticipantId;references:Id"`
	User     *GCUser     `gorm:"foreignKey:UserId;references:Id"`
}

func (DBParticipant) TableName() string {
	return "gc_participants"
}

func (p *DBParticipant) BeforeSave(tx *gorm.DB) error {
	// Convert empty string to nil
	if p.UserId != nil && *p.UserId == "" {
		p.UserId = nil
	}
	return nil
}