package task

import (
	"errors"
	"fmt"
	"git.0x7f.app/WOJ/woj-server/internal/e"
	"git.0x7f.app/WOJ/woj-server/internal/misc/config"
	"git.0x7f.app/WOJ/woj-server/internal/misc/log"
	"git.0x7f.app/WOJ/woj-server/internal/model"
	"git.0x7f.app/WOJ/woj-server/internal/service/runner"
	"github.com/hibiken/asynq"
	"github.com/samber/do"
	"go.uber.org/zap"
)

var _ Service = (*service)(nil)

type Service interface {
	ProblemBuild(data *model.ProblemBuildPayload) (string, e.Status)
	ProblemUpdate(data *model.ProblemUpdatePayload) (string, e.Status)
	SubmitJudge(data *model.SubmitJudgePayload) (string, e.Status)
	SubmitUpdate(data *model.SubmitUpdatePayload, ctx runner.JudgeStatus) (string, e.Status)

	GetTaskInfo(string, string) (*asynq.TaskInfo, e.Status)

	HealthCheck() error
}

func NewService(i *do.Injector) (Service, error) {
	conf := do.MustInvoke[config.Service](i).GetConfig()

	redisOpt := asynq.RedisClientOpt{
		Addr:     fmt.Sprintf("%s:%d", conf.Redis.Address, conf.Redis.Port),
		Password: conf.Redis.Password,
		DB:       conf.Redis.QueueDb,
	}

	return &service{
		log:       do.MustInvoke[log.Service](i).GetLogger("task"),
		queue:     asynq.NewClient(redisOpt),
		inspector: asynq.NewInspector(redisOpt),
	}, nil
}

type service struct {
	log       *zap.Logger
	queue     *asynq.Client
	inspector *asynq.Inspector
}

func (s *service) HealthCheck() error {
	servers, err := s.inspector.Servers()
	if err != nil {
		return err
	}
	if len(servers) == 0 {
		return errors.New("no asynq server found")
	}
	return nil
}