package channel

import "github.com/gochat/gochat/internal/model"

// ChannelMicrosoft represents a Microsoft (Azure AD/Teams) channel.
// Reference: Chatwoot does not have a native Microsoft channel — this is a gochat addition.
//
// Enterprise Microsoft integration uses Azure AD OAuth for authentication
// and Microsoft Graph API for Teams messaging.
//
// Features:
//   - Azure AD OAuth 2.0 authorization flow for enterprise SSO
//   - Microsoft Teams channel messaging via Graph API
//   - Outlook email integration potential
//   - Azure webhook subscriptions for real-time events
type ChannelMicrosoft struct {
	model.Base

	// Account foreign key
	AccountID uint `gorm:"index;not null" json:"account_id"`

	// Inbox foreign key — links to the Inbox that wraps this channel
	InboxID uint `gorm:"not null;uniqueIndex" json:"inbox_id"`

	// Azure AD tenant ID — identifies the Azure organization
	TenantID string `gorm:"size:255;not null" json:"tenant_id"`

	// Azure AD client/object ID for the application
	ClientID string `gorm:"size:255;not null" json:"client_id"`

	// Microsoft Graph API access token
	AccessToken string `gorm:"size:2048;not null" json:"-"`

	// OAuth 2.0 refresh token for token renewal
	RefreshToken string `gorm:"size:2048" json:"-"`

	// Microsoft Teams team ID (optional — for Teams channel integration)
	TeamID string `gorm:"size:255" json:"team_id,omitempty"`

	// Microsoft Teams channel ID (optional — for specific Teams channel)
	ChannelID string `gorm:"size:255" json:"channel_id,omitempty"`

	// Display name of the connected Microsoft resource
	DisplayName string `gorm:"size:255" json:"display_name,omitempty"`

	// Webhook subscription ID for Graph API subscriptions
	SubscriptionID string `gorm:"size:255" json:"subscription_id,omitempty"`

	// Flag indicating reauthorization is required
	ReauthorizationRequired bool `gorm:"default:false" json:"reauthorization_required,omitempty"`
}

func (ChannelMicrosoft) TableName() string { return "channel_microsoft" }

func (c ChannelMicrosoft) GetChannelBase() ChannelBase {
	return ChannelBase{
		ID:          c.ID,
		AccountID:   c.AccountID,
		InboxID:     c.InboxID,
		ChannelType: "microsoft",
	}
}

func (c ChannelMicrosoft) GetChannelType() string { return "microsoft" }