package runner

import (
	"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/pkg/pool"
	"git.0x7f.app/WOJ/woj-server/pkg/utils"
	"github.com/samber/do"
	"go.uber.org/zap"
	"runtime"
)

var _ Service = (*service)(nil)

type Service interface {
	// EnsureDeps build docker images
	EnsureDeps(force bool) e.Status
	// NewProblem = Download + Parse + Prebuild
	NewProblem(version uint, url string, force bool) (Config, e.Status)

	// Compile compile user submission
	Compile(version uint, user string, lang string) (JudgeStatus, e.Status)
	// RunAndJudge execute user program
	RunAndJudge(version uint, user string, lang string) (JudgeStatus, int32, e.Status)

	// ParseConfig parse config file
	ParseConfig(version uint, skipCheck bool) (Config, error)
	// ProblemExists check if problem exists
	ProblemExists(version uint) bool

	HealthCheck() error
	Shutdown() error
}

func NewService(i *do.Injector) (Service, error) {
	concurrency := utils.If(runtime.NumCPU() > 1, runtime.NumCPU()-1, 1)

	srv := &service{
		log:     do.MustInvoke[log.Service](i).GetLogger("runner"),
		pool:    pool.NewTaskPool(concurrency, concurrency),
		verbose: do.MustInvoke[config.Service](i).GetConfig().Development,
	}
	srv.pool.Start()

	return srv, nil
}

type service struct {
	log     *zap.Logger
	pool    *pool.TaskPool
	verbose bool
}

func (s *service) HealthCheck() error {
	return nil
}

func (s *service) Shutdown() error {
	s.pool.Stop()
	return nil
}