package channel

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

// ChannelTwitter represents a Twitter/X channel.
// Reference: Chatwoot app/models/channel/twitter_profile.rb
//
// Chatwoot's ChannelTwitter (Channel::TwitterProfile) model attributes:
//   - account_id: FK to Account
//   - twitter_access_token: OAuth access token for Twitter API
//   - twitter_access_token_secret: OAuth access token secret
//   - profile_id: Twitter user ID (numeric)
//   - name: Twitter display name
//   - screen_name: Twitter @handle
//   - profile_image_url: Twitter avatar URL
//   - reauthorization_required: Flag when token needs refresh
//
// gochat enhancements beyond Chatwoot:
//   - webhook_id: Twitter webhook ID for CRC/subscription management
//   - webhook_env: Twitter Account Activity API environment name
//   - uses OAuth 2.0 with PKCE for newer Twitter API v2 integration
type ChannelTwitter 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"`

	// Twitter user ID (numeric string) — identifies the Twitter account
	TwitterUserID string `gorm:"size:255;not null;uniqueIndex" json:"twitter_user_id"`

	// Twitter display name
	Name string `gorm:"size:255" json:"name,omitempty"`

	// Twitter @handle (screen_name)
	ScreenName string `gorm:"size:255" json:"screen_name,omitempty"`

	// Twitter avatar URL
	ProfileImageURL string `gorm:"size:512" json:"profile_image_url,omitempty"`

	// OAuth 2.0 access token for Twitter API v2
	AccessToken string `gorm:"size:1024;not null" json:"-"`

	// OAuth 2.0 refresh token for token renewal
	RefreshToken string `gorm:"size:1024" json:"-"`

	// OAuth 1.0a access token (legacy Twitter API compatibility)
	TwitterAccessToken string `gorm:"size:512;column:twitter_access_token" json:"-"`

	// OAuth 1.0a access token secret (legacy)
	TwitterAccessTokenSecret string `gorm:"size:512;column:twitter_access_token_secret" json:"-"`

	// Twitter Account Activity API webhook ID
	WebhookID string `gorm:"size:255" json:"webhook_id,omitempty"`

	// Twitter Account Activity API environment name
	WebhookEnv string `gorm:"size:255" json:"webhook_env,omitempty"`

	// Flag indicating reauthorization is required (token expired/revoked)
	ReauthorizationRequired bool `gorm:"default:false" json:"reauthorization_required,omitempty"`
}

func (ChannelTwitter) TableName() string { return "channel_twitter_profiles" }

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

func (c ChannelTwitter) GetChannelType() string { return "twitter" }