93 lines
3.0 KiB
Go
93 lines
3.0 KiB
Go
// Copyright (c) 2026 Probo Inc <hello@probo.com>.
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
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// AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
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// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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// OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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// PERFORMANCE OF THIS SOFTWARE.
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package file
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import (
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"context"
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"fmt"
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"time"
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"go.gearno.de/kit/pg"
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"go.probo.inc/probo/pkg/baseurl"
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"go.probo.inc/probo/pkg/coredata"
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"go.probo.inc/probo/pkg/filemanager"
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"go.probo.inc/probo/pkg/gid"
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)
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type Service struct {
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pg *pg.Client
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baseURL *baseurl.BaseURL
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fileManager *filemanager.Service
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}
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func NewService(pgClient *pg.Client, baseURL *baseurl.BaseURL, fileManager *filemanager.Service) *Service {
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return &Service{
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pg: pgClient,
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baseURL: baseURL,
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fileManager: fileManager,
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}
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}
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// GenerateFileURL returns the stable application URL for a public file.
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// The URL points to the public endpoint which redirects to a presigned S3 URL.
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func (s *Service) GenerateFileURL(ctx context.Context, fileID gid.GID) (string, error) {
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file := &coredata.File{}
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err := s.pg.WithConn(ctx, func(ctx context.Context, conn pg.Querier) error {
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if err := file.LoadPublicByID(ctx, conn, fileID); err != nil {
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return fmt.Errorf("cannot load public file: %w", err)
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}
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return nil
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})
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if err != nil {
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return "", err
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}
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url, err := s.baseURL.AppendPath("/api/files/v1/public/" + fileID.String()).String()
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if err != nil {
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return "", fmt.Errorf("cannot build file URL: %w", err)
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}
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return url, nil
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}
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// GeneratePublicPresignedURL loads a public file and returns a short-lived S3 presigned URL.
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// Used by the public /api/files/v1/public/{id} HTTP handler.
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func (s *Service) GeneratePublicPresignedURL(ctx context.Context, fileID gid.GID, expiresIn time.Duration) (string, error) {
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file := &coredata.File{}
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err := s.pg.WithConn(
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ctx,
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func(ctx context.Context, conn pg.Querier) error {
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if err := file.LoadPublicByID(ctx, conn, fileID); err != nil {
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return fmt.Errorf("cannot load public file: %w", err)
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}
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return nil
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})
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if err != nil {
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return "", err
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}
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return s.fileManager.GenerateFileURL(ctx, file, expiresIn)
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}
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// GeneratePresignedURL returns a short-lived S3 presigned URL for an already-loaded file.
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// Used by the authenticated /api/files/v1/{id} HTTP handler to avoid a second DB round-trip.
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func (s *Service) GeneratePresignedURL(ctx context.Context, file *coredata.File, expiresIn time.Duration) (string, error) {
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return s.fileManager.GenerateFileURL(ctx, file, expiresIn)
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}
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