package rabbitmq

import (
	"context"
	"errors"

	"github.com/gogf/gf/v2/frame/g"

	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/consts"
	mq "git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/library/rabbitmq"
	"git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/model"
	monthlyusageproducer "git.5iot.com/iotlcm-public/iotlcm-worker-svr/internal/producer/monthlyusage"
)

func (c *Consumers) initTrafficUsageMonthlyStart(ctx context.Context) error {
	if !mq.Enabled(ctx) {
		g.Log().Info(ctx, "traffic usage monthly start consumer skipped, RabbitMQ disabled")
		return nil
	}
	if err := mq.ConsumeJSON[model.TrafficUsageMonthlyStartMessage](
		ctx,
		consts.QueueTrafficUsageMonthlyStart,
		"iotlcm-traffic-usage-monthly-start",
		c.handleTrafficUsageMonthlyStart,
	); err != nil {
		return err
	}
	g.Log().Infof(ctx, "traffic usage monthly start consumer started, queue:%s", consts.QueueTrafficUsageMonthlyStart)
	return nil
}

func (c *Consumers) handleTrafficUsageMonthlyStart(ctx context.Context, message model.TrafficUsageMonthlyStartMessage) error {
	if message.RunID == "" || message.QueryMonth == "" {
		g.Log().Errorf(ctx, "traffic usage monthly start message dropped, invalid message:%+v", message)
		return nil
	}
	err := c.trafficUsageMonthlyStart.Produce(ctx, message)
	if errors.Is(err, monthlyusageproducer.ErrAlreadyRunning) {
		g.Log().Warningf(ctx, "traffic usage monthly start skipped because previous run is active, runId:%s", message.RunID)
		return nil
	}
	// A run that already finished must not be resurrected by a redelivered
	// message. Ack it instead of retrying forever.
	if errors.Is(err, monthlyusageproducer.ErrRunFinished) {
		g.Log().Warningf(ctx, "traffic usage monthly start skipped because run already finished, runId:%s", message.RunID)
		return nil
	}
	return err
}