1 files changed, 95 insertions, 0 deletions
diff --git a/perllib/FixMyStreet/PhotoStorage/FileSystem.pm b/perllib/FixMyStreet/PhotoStorage/FileSystem.pm
new file mode 100644
index 000000000..0600f867d
--- /dev/null
+++ b/perllib/FixMyStreet/PhotoStorage/FileSystem.pm
@@ -0,0 +1,95 @@
+package FixMyStreet::PhotoStorage::FileSystem;
+
+use Moose;
+use parent 'FixMyStreet::PhotoStorage';
+
+use Path::Tiny 'path';
+
+
+has upload_dir => (
+    is => 'ro',
+    lazy => 1,
+    default => sub {
+        my $dir = FixMyStreet->config('PHOTO_STORAGE_OPTIONS')->{UPLOAD_DIR} ||
+                  FixMyStreet->config('UPLOAD_DIR');
+        return path($dir)->absolute(FixMyStreet->path_to());
+    },
+);
+
+
+=head2 get_file
+
+Returns a Path::Tiny path to a file on disk identified by an ID and type.
+File may or may not exist. This handle is then used to read photo data or
+write to disk.
+
+=cut
+
+sub get_file {
+    my ($self, $fileid, $type) = @_;
+    my $cache_dir = $self->upload_dir;
+    return path( $cache_dir, "$fileid.$type" );
+}
+
+
+=head2 store_photo
+
+Stores a blob of binary data representing a photo on disk.
+Returns a key which is used in the future to get the contents of the file.
+
+=cut
+
+sub store_photo {
+    my ($self, $photo_blob) = @_;
+
+    my $type = $self->detect_type($photo_blob) || 'jpeg';
+    my $fileid = $self->get_fileid($photo_blob);
+    my $file = $self->get_file($fileid, $type);
+    $file->spew_raw($photo_blob);
+
+    return $file->basename;
+}
+
+
+=head2 retrieve_photo
+
+Fetches the file content of a particular photo from storage.
+Returns the binary blob and the filetype, if the photo exists in storage.
+
+=cut
+
+sub retrieve_photo {
+    my ($self, $filename) = @_;
+
+    my ($fileid, $type) = split /\./, $filename;
+    my $file = $self->get_file($fileid, $type);
+    if ($file->exists) {
+        my $photo = $file->slurp_raw;
+        return ($photo, $type);
+    }
+}
+
+
+=head2 validate_key
+
+A long-running FMS instance might have reports whose photo IDs in the DB
+don't include the file extension. This function takes a value from the DB and
+returns a 'tidied' version that can be used when calling photo_exists
+or retrieve_photo.
+
+If the passed key doesn't seem like it'll result in a valid filename (i.e.
+it's not a 40-char SHA1 hash) returns undef.
+
+=cut
+
+sub validate_key {
+    my ($self, $key) = @_;
+
+    my ($fileid, $type) = split /\./, $key;
+    $type ||= 'jpeg';
+    if ($fileid && length($fileid) == 40) {
+        return "$fileid.$type";
+    }
+}
+
+1;