package events

import (
	"context"

	"go.uber.org/zap"

	"tyapi-server/internal/domains/finance/events"
	"tyapi-server/internal/shared/interfaces"
)

// InvoiceEventPublisher 发票事件发布器实现
type InvoiceEventPublisher struct {
	logger    *zap.Logger
	eventBus  interfaces.EventBus
}

// NewInvoiceEventPublisher 创建发票事件发布器
func NewInvoiceEventPublisher(logger *zap.Logger, eventBus interfaces.EventBus) *InvoiceEventPublisher {
	return &InvoiceEventPublisher{
		logger:   logger,
		eventBus: eventBus,
	}
}

// PublishInvoiceApplicationCreated 发布发票申请创建事件
func (p *InvoiceEventPublisher) PublishInvoiceApplicationCreated(ctx context.Context, event *events.InvoiceApplicationCreatedEvent) error {
	p.logger.Info("发布发票申请创建事件",
		zap.String("application_id", event.ApplicationID),
		zap.String("user_id", event.UserID),
		zap.String("invoice_type", string(event.InvoiceType)),
		zap.String("amount", event.Amount.String()),
		zap.String("company_name", event.CompanyName),
		zap.String("receiving_email", event.ReceivingEmail),
	)
	
	// TODO: 实现实际的事件发布逻辑
	// 例如：发送到消息队列、调用外部服务等
	
	return nil
}

// PublishInvoiceApplicationApproved 发布发票申请通过事件
func (p *InvoiceEventPublisher) PublishInvoiceApplicationApproved(ctx context.Context, event *events.InvoiceApplicationApprovedEvent) error {
	p.logger.Info("发布发票申请通过事件",
		zap.String("application_id", event.ApplicationID),
		zap.String("user_id", event.UserID),
		zap.String("amount", event.Amount.String()),
		zap.String("receiving_email", event.ReceivingEmail),
		zap.Time("approved_at", event.ApprovedAt),
	)
	
	// TODO: 实现实际的事件发布逻辑
	// 例如：发送邮件通知用户、更新统计数据等
	
	return nil
}

// PublishInvoiceApplicationRejected 发布发票申请拒绝事件
func (p *InvoiceEventPublisher) PublishInvoiceApplicationRejected(ctx context.Context, event *events.InvoiceApplicationRejectedEvent) error {
	p.logger.Info("发布发票申请拒绝事件",
		zap.String("application_id", event.ApplicationID),
		zap.String("user_id", event.UserID),
		zap.String("reason", event.Reason),
		zap.String("receiving_email", event.ReceivingEmail),
		zap.Time("rejected_at", event.RejectedAt),
	)
	
	// TODO: 实现实际的事件发布逻辑
	// 例如：发送邮件通知用户、记录拒绝原因等
	
	return nil
}

// PublishInvoiceFileUploaded 发布发票文件上传事件
func (p *InvoiceEventPublisher) PublishInvoiceFileUploaded(ctx context.Context, event *events.InvoiceFileUploadedEvent) error {
	p.logger.Info("📤 开始发布发票文件上传事件",
		zap.String("invoice_id", event.InvoiceID),
		zap.String("user_id", event.UserID),
		zap.String("file_id", event.FileID),
		zap.String("file_name", event.FileName),
		zap.String("file_url", event.FileURL),
		zap.String("receiving_email", event.ReceivingEmail),
		zap.Time("uploaded_at", event.UploadedAt),
	)

	// 发布到事件总线
	if p.eventBus != nil {
		p.logger.Info("🚀 准备发布事件到事件总线",
			zap.String("event_type", event.GetType()),
			zap.String("event_id", event.GetID()),
		)

		if err := p.eventBus.Publish(ctx, event); err != nil {
			p.logger.Error("❌ 发布发票文件上传事件到事件总线失败",
				zap.String("invoice_id", event.InvoiceID),
				zap.String("event_type", event.GetType()),
				zap.String("event_id", event.GetID()),
				zap.Error(err),
			)
			return err
		}
		p.logger.Info("✅ 发票文件上传事件已发布到事件总线",
			zap.String("invoice_id", event.InvoiceID),
			zap.String("event_type", event.GetType()),
			zap.String("event_id", event.GetID()),
		)
	} else {
		p.logger.Warn("⚠️ 事件总线未初始化，无法发布事件",
			zap.String("invoice_id", event.InvoiceID),
		)
	}

	return nil
}