package model

import "time"

// WidgetOfflineMessage stores messages submitted by visitors when no agents are online.
// Reference: Chatwoot app/models/channel/web_widget.rb — agent_away_message + offline messaging
//
// When a visitor sends a message via the widget and no agents are available
// (based on business hours or agent presence), the message is stored as an offline
// message. When an agent becomes available, the offline message is converted into
// a conversation automatically.
//
// This replaces the simpler approach of just showing an away message — visitors
// can still leave their contact info and message, which creates a pending conversation
// that agents can respond to when they return.
type WidgetOfflineMessage struct {
	Base
	InboxID        uint          `gorm:"index;not null" json:"inbox_id"`                        // The web_widget inbox
	AccountID      uint          `gorm:"index;not null" json:"account_id"`                      // Account scope for the message
	ContactName    string        `gorm:"size:255" json:"contact_name,omitempty"`                // Visitor name (from pre-chat form or anonymous)
	ContactEmail   string        `gorm:"size:512" json:"contact_email,omitempty"`               // Visitor email (from pre-chat form)
	ContactPhone   string        `gorm:"size:30" json:"contact_phone,omitempty"`                // Visitor phone (from pre-chat form)
	ContactCompany string        `gorm:"size:255" json:"contact_company,omitempty"`             // Visitor company (from pre-chat form)
	ContactCity    string        `gorm:"size:255" json:"contact_city,omitempty"`                // Visitor city (from pre-chat form)
	ContactCountry string        `gorm:"size:255" json:"contact_country,omitempty"`             // Visitor country (from pre-chat form)
	Content        string        `gorm:"type:text;not null" json:"content"`                     // The message content
	Referer        string        `gorm:"size:1024" json:"referer,omitempty"`                    // Page URL where widget was embedded
	BrowserInfo    string        `gorm:"size:512" json:"browser_info,omitempty"`                // Browser metadata
	ConversationID *uint         `gorm:"index" json:"conversation_id,omitempty"`                // Set when converted to a conversation (null until then)
	Status         OfflineStatus `gorm:"size:30;default:'pending'" json:"status"`               // pending → converted → dismissed
	ConvertedAt    *time.Time    `json:"converted_at,omitempty"`                                 // When the message was converted to a conversation
}

func (WidgetOfflineMessage) TableName() string { return "widget_offline_messages" }

// OfflineStatus represents the lifecycle of an offline message.
type OfflineStatus string

const (
	OfflineStatusPending   OfflineStatus = "pending"   // Awaiting agent to come online
	OfflineStatusConverted OfflineStatus = "converted"  // Converted into a conversation
	OfflineStatusDismissed OfflineStatus = "dismissed"  // Dismissed by admin without conversion
)

// WidgetOfflineMessageSubmission is the request body from the widget SDK
// when a visitor submits a message while agents are offline.
type WidgetOfflineMessageSubmission struct {
	Name    string `json:"name,omitempty"`              // Visitor name
	Email   string `json:"email,omitempty"`             // Visitor email
	Phone   string `json:"phone,omitempty"`             // Visitor phone
	Company string `json:"company,omitempty"`           // Visitor company
	City    string `json:"city,omitempty"`              // Visitor city
	Country string `json:"country,omitempty"`           // Visitor country
	Message string `json:"message" binding:"required"`  // The offline message content
}