Api/v1/statuses (#11)

This PR adds:
Statuses

    New status creation.
    View existing status
    Delete a status
    Fave a status
    Unfave a status
    See who's faved a status

Media

    Upload media attachment and store/retrieve it
    Upload custom emoji and store/retrieve it

Fileserver

    Serve files from storage

Testing

    Test models, testrig -- run a GTS test instance and play around with it.

1 files changed, 51 insertions, 2 deletions

diff --git a/internal/storage/local.go b/internal/storage/local.go
index 29461d5d4..3b64524f6 100644
--- a/internal/storage/local.go
+++ b/internal/storage/local.go
@@ -1,21 +1,70 @@
 package storage
 
 import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
 	"github.com/sirupsen/logrus"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
 )
 
+// NewLocal returns an implementation of the Storage interface that uses
+// the local filesystem for storing and retrieving files, attachments, etc.
 func NewLocal(c *config.Config, log *logrus.Logger) (Storage, error) {
-	return &localStorage{}, nil
+	return &localStorage{
+		config: c,
+		log:    log,
+	}, nil
 }
 
 type localStorage struct {
+	config *config.Config
+	log    *logrus.Logger
 }
 
 func (s *localStorage) StoreFileAt(path string, data []byte) error {
+	l := s.log.WithField("func", "StoreFileAt")
+	l.Debugf("storing at path %s", path)
+	components := strings.Split(path, "/")
+	dir := strings.Join(components[0:len(components)-1], "/")
+	if err := os.MkdirAll(dir, 0777); err != nil {
+		return fmt.Errorf("error writing file at %s: %s", path, err)
+	}
+	if err := os.WriteFile(path, data, 0777); err != nil {
+		return fmt.Errorf("error writing file at %s: %s", path, err)
+	}
 	return nil
 }
 
 func (s *localStorage) RetrieveFileFrom(path string) ([]byte, error) {
-	return nil, nil
+	l := s.log.WithField("func", "RetrieveFileFrom")
+	l.Debugf("retrieving from path %s", path)
+	b, err := os.ReadFile(path)
+	if err != nil {
+		return nil, fmt.Errorf("error reading file at %s: %s", path, err)
+	}
+	return b, nil
+}
+
+func (s *localStorage) ListKeys() ([]string, error) {
+	keys := []string{}
+	err := filepath.Walk(s.config.StorageConfig.BasePath, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() {
+			keys = append(keys, path)
+		}
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+	return keys, nil
+}
+
+func (s *localStorage) RemoveFileAt(path string) error {
+	return os.Remove(path)
 }