package media

import (
	"context"
	"database/sql"
	"errors"
	"io"

	"github.com/minio/minio-go/v7"
	"gorm.io/gorm"

	"git.mstar.dev/mstar/linstrom/config"
	"git.mstar.dev/mstar/linstrom/storage-new/dbgen"
)

var ErrFileNotFound = errors.New("file not found")

func (s *Server) ReadFile(userid, filename string) (io.ReadCloser, error) {
	mm := dbgen.MediaMetadata
	metadata, err := mm.Where(mm.OwnedById.Eq(sql.NullString{Valid: true, String: userid}), mm.Name.Eq(filename), mm.Remote.Is(false)).
		Select(mm.ID, mm.Location).
		First()
	switch err {
	case gorm.ErrRecordNotFound:
		return nil, ErrFileNotFound
	case nil:
	default:
		return nil, err
	}
	return s.client.GetObject(
		context.TODO(),
		config.GlobalConfig.S3.BucketName,
		metadata.Location,
		minio.GetObjectOptions{},
	)
}

func (s *Server) ReadFileId(id string) (io.ReadCloser, error) {
	mm := dbgen.MediaMetadata
	metadata, err := mm.Where(mm.ID.Eq(id), mm.Remote.Is(false)).
		Select(mm.Location).
		First()
	switch err {
	case gorm.ErrRecordNotFound:
		return nil, ErrFileNotFound
	case nil:
	default:
		return nil, err
	}
	return s.client.GetObject(
		context.TODO(),
		config.GlobalConfig.S3.BucketName,
		metadata.Location,
		minio.GetObjectOptions{},
	)
}