package callback

import (
	"context"
	"fmt"
	"os"
	"path/filepath"
	"strconv"
	"time"

	"lone-services/pkg/utils"
	"lone-services/services/analysis/internal/dao"
	analysisoss "lone-services/services/analysis/internal/oss"

	"github.com/google/uuid"
	"github.com/zeromicro/go-zero/core/logx"
)

func ProcessUpload(ctx context.Context, payload analysisoss.CallbackPayload) error {
	if payload.TaskId == utils.StringEmpty || payload.Object == utils.StringEmpty {
		return fmt.Errorf("callback missing task_id or object")
	}

	sess, err := analysisoss.LoadUploadSession(ctx, payload.TaskId)
	if err != nil {
		return fmt.Errorf("load upload session: %w", err)
	}
	if sess.DateDir == utils.StringEmpty {
		return fmt.Errorf("upload session date_dir empty")
	}

	downloadURL, err := BuildDownloadURL(payload.Object)
	if err != nil {
		return err
	}

	subTaskId := uuid.New().String()
	subDirName := strconv.FormatInt(time.Now().UnixMilli(), 10)
	targetDir := filepath.Join(utils.GetConfigString("file.analysis_path"), sess.DateDir, payload.TaskId)
	if err = os.MkdirAll(targetDir, os.ModePerm); err != nil {
		return fmt.Errorf("mkdir analysis path: %w", err)
	}
	zipPath := filepath.Join(targetDir, subDirName+".zip")

	if err = DownloadFile(downloadURL, zipPath); err != nil {
		return fmt.Errorf("download zip: %w", err)
	}

	pathRes, coverPath, err := HandleTaskZip(zipPath)
	if err != nil {
		return fmt.Errorf("handle zip: %w", err)
	}

	if err = CacheUploadedLights(payload.TaskId, pathRes.FinalDir); err != nil {
		logx.WithContext(ctx).Errorf("cache uploaded lights failed: %v", err)
	}

	if utils.GetConfigInt("switch.facepp") == utils.NumberOne {
		logx.WithContext(ctx).Infof("facepp skip task_id=%s", payload.TaskId)
	}

	if utils.GetConfigInt("switch.analysis") == utils.NumberOne {
		if err = NotifyPythonService(payload.TaskId, subTaskId, pathRes.FinalDir); err != nil {
			logx.WithContext(ctx).Errorf("notify python failed: %v", err)
		}
	}

	ts := dao.TaskTimeStamp{
		TaskId:         payload.TaskId,
		SubTaskId:      subTaskId,
		ProcessStartTs: time.Now().UnixMilli(),
	}
	userId := sess.SkinUserId()
	if userId < utils.NumberOne {
		userId = sess.UserId
	}
	if err = SaveTask(ts, userId, pathRes, coverPath); err != nil {
		return err
	}
	return SaveSubTask(ts, pathRes)
}