// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0

package upload

import (
	"Wavelet/core/contracts"
	"Wavelet/plugins/domain/upload/models"
	"Wavelet/plugins/domain/upload/repository"
	"Wavelet/plugins/domain/upload/shared"
	"context"
	"errors"
)

type uploadServiceImpl struct{}

func (s *uploadServiceImpl) GetByID(ctx context.Context, id uint64) (*contracts.UploadDTO, error) {
	u, err := repository.GetActiveUploadByID(ctx, id)
	if err != nil {
		return nil, err
	}
	dto := toUploadDTO(&u)
	return &dto, nil
}

func (s *uploadServiceImpl) OpenStoredUpload(ctx context.Context, id uint64) (*contracts.OpenedUploadDTO, error) {
	u, err := repository.GetActiveUploadByID(ctx, id)
	if err != nil {
		return nil, err
	}
	storageSvc := shared.GetStorage(ctx)
	if storageSvc == nil {
		return nil, errors.New("storage service not available")
	}
	obj, err := storageSvc.Get(ctx, u.FilePath)
	if err != nil {
		return nil, err
	}
	return &contracts.OpenedUploadDTO{
		Upload:        toUploadDTO(&u),
		Body:          obj.Body,
		ContentType:   obj.ContentType,
		ContentLength: obj.ContentLength,
	}, nil
}

func (s *uploadServiceImpl) Remove(ctx context.Context, id uint64) error {
	_, err := Remove(ctx, id)
	return err
}

func (s *uploadServiceImpl) RemoveOwned(ctx context.Context, id uint64, userID uint64) error {
	_, err := RemoveOwned(ctx, userID, id)
	return err
}

func (s *uploadServiceImpl) FindByHash(ctx context.Context, hash string, size int64) (*contracts.UploadDTO, error) {
	u, err := FindByHash(ctx, hash, size)
	if err != nil {
		return nil, err
	}
	dto := toUploadDTO(&u)
	return &dto, nil
}

func (s *uploadServiceImpl) RebuildStats(ctx context.Context) error {
	return RebuildUploadStats(ctx)
}

func toUploadDTO(u *models.Upload) contracts.UploadDTO {
	return contracts.UploadDTO{
		ID:       u.ID,
		UserID:   u.UserID,
		FileName: u.FileName,
		FilePath: u.FilePath,
		MimeType: u.MimeType,
		Size:     u.FileSize,
		Hash:     u.Hash,
		Status:   string(u.Status),
		Type:     u.Type,
		Metadata: contracts.UploadMetadataDTO{
			Width:        u.Metadata.Width,
			Height:       u.Metadata.Height,
			Duration:     u.Metadata.Duration,
			OriginalMime: u.Metadata.OriginalMime,
			UserAgent:    u.Metadata.UserAgent,
			ClientIP:     u.Metadata.ClientIP,
			Bucket:       u.Metadata.Bucket,
			Extra:        u.Metadata.Extra,
		},
		CreatedAt: u.CreatedAt,
		UpdatedAt: u.UpdatedAt,
	}
}