package sandbox

import (
	"context"
	"fmt"
	"log/slog"

	"focs.ji.sjtu.edu.cn/git/FOCS-dev/JOJ3/internal/stage"
	"github.com/criyle/go-judge/pb"
)

type Sandbox struct {
	execClient pb.ExecutorClient
	cachedMap  map[string]string
}

func (e *Sandbox) Run(cmd stage.Cmd) (*stage.ExecutorResult, error) {
	if cmd.CopyIn == nil {
		cmd.CopyIn = make(map[string]stage.CmdFile)
	}
	for k, v := range cmd.CopyInCached {
		if fileID, ok := e.cachedMap[v]; ok {
			cmd.CopyIn[k] = stage.CmdFile{FileID: &fileID}
		}
	}
	pbReq := &pb.Request{Cmd: convertPBCmd([]stage.Cmd{cmd})}
	pbRet, err := e.execClient.Exec(context.TODO(), pbReq)
	if err != nil {
		return nil, err
	}
	if pbRet.Error != "" {
		return nil, fmt.Errorf("sandbox execute error: %s", pbRet.Error)
	}
	executorRes := &convertPBResult(pbRet.Results)[0]
	for fileName, fileID := range executorRes.FileIDs {
		e.cachedMap[fileName] = fileID
	}
	return executorRes, nil
}

func (e *Sandbox) Cleanup() error {
	for _, fileID := range e.cachedMap {
		_, err := e.execClient.FileDelete(context.TODO(), &pb.FileID{
			FileID: fileID,
		})
		if err != nil {
			slog.Error("sandbox cleanup", "error", err)
		}
	}
	return nil
}