package service

import (
	"context"
	"fmt"

	channelmodel "github.com/gochat/gochat/internal/model/channel"
	"github.com/gochat/gochat/internal/repository"
	applogger "github.com/gochat/gochat/pkg/logger"
)

// ChannelTwitterService implements business logic for Twitter channel operations.
// Reference: Chatwoot app/controllers/api/v1/accounts/channels/twitter_controller.rb
type ChannelTwitterService struct {
	repo *repository.ChannelTwitterRepo
}

// NewChannelTwitterService creates a new ChannelTwitter service.
func NewChannelTwitterService(repo *repository.ChannelTwitterRepo) *ChannelTwitterService {
	return &ChannelTwitterService{repo: repo}
}

// GetByID retrieves a Twitter channel by ID.
func (s *ChannelTwitterService) GetByID(ctx context.Context, id uint) (*channelmodel.ChannelTwitter, error) {
	return s.repo.FindByID(ctx, id)
}

// GetByInboxID retrieves a Twitter channel by inbox ID.
func (s *ChannelTwitterService) GetByInboxID(ctx context.Context, inboxID uint) (*channelmodel.ChannelTwitter, error) {
	return s.repo.FindByInboxID(ctx, inboxID)
}

// GetByAccountAndInboxID retrieves a Twitter channel scoped to an account and inbox.
func (s *ChannelTwitterService) GetByAccountAndInboxID(ctx context.Context, accountID, inboxID uint) (*channelmodel.ChannelTwitter, error) {
	return s.repo.FindByAccountAndInboxID(ctx, accountID, inboxID)
}

// GetByTwitterUserID retrieves a Twitter channel by Twitter user ID.
func (s *ChannelTwitterService) GetByTwitterUserID(ctx context.Context, twitterUserID string) (*channelmodel.ChannelTwitter, error) {
	return s.repo.FindByTwitterUserID(ctx, twitterUserID)
}

// Create creates a new Twitter channel record.
func (s *ChannelTwitterService) Create(ctx context.Context, ch *channelmodel.ChannelTwitter) error {
	if err := s.repo.Create(ctx, ch); err != nil {
		applogger.L().Errorf("Failed to create twitter channel: %v", err)
		return fmt.Errorf("failed to create twitter channel: %w", err)
	}
	applogger.L().Infof("Twitter channel created (id=%d, inbox_id=%d)", ch.ID, ch.InboxID)
	return nil
}

// Update updates a Twitter channel record.
func (s *ChannelTwitterService) Update(ctx context.Context, ch *channelmodel.ChannelTwitter) error {
	if err := s.repo.Update(ctx, ch); err != nil {
		applogger.L().Errorf("Failed to update twitter channel: %v", err)
		return fmt.Errorf("failed to update twitter channel: %w", err)
	}
	applogger.L().Infof("Twitter channel updated (id=%d)", ch.ID)
	return nil
}

// Delete soft-deletes a Twitter channel record.
func (s *ChannelTwitterService) Delete(ctx context.Context, id uint) error {
	if err := s.repo.Delete(ctx, id); err != nil {
		applogger.L().Errorf("Failed to delete twitter channel: %v", err)
		return err
	}
	applogger.L().Infof("Twitter channel deleted (id=%d)", id)
	return nil
}

// ListByAccount retrieves all Twitter channels for an account.
func (s *ChannelTwitterService) ListByAccount(ctx context.Context, accountID uint) ([]channelmodel.ChannelTwitter, error) {
	return s.repo.ListByAccount(ctx, accountID)
}

// MarkReauthorizationRequired marks a Twitter channel as needing reauthorization.
func (s *ChannelTwitterService) MarkReauthorizationRequired(ctx context.Context, inboxID uint) error {
	ch, err := s.repo.FindByInboxID(ctx, inboxID)
	if err != nil {
		return fmt.Errorf("twitter channel not found: %w", err)
	}

	ch.ReauthorizationRequired = true
	if err := s.repo.Update(ctx, ch); err != nil {
		applogger.L().Errorf("Failed to mark twitter channel for reauthorization: %v", err)
		return err
	}

	applogger.L().Infof("Twitter channel marked for reauthorization (inbox_id=%d)", inboxID)
	return nil
}