Fix selecting a custom training file in flatpak

This is done by copying any training to the temporary tesseract
directory, and always using that as the TESSDIR. This works as
it's writeable (unlike the /app/share directory that flatpak
would otherwise work)

3 files changed, 43 insertions, 13 deletions

diff --git a/cmd/rescribe/gui.go b/cmd/rescribe/gui.go
index 8790f03..73f1db2 100644
--- a/cmd/rescribe/gui.go
+++ b/cmd/rescribe/gui.go
@@ -134,14 +134,18 @@ func trainingSelectOnChange(sel *widget.Select, parent fyne.Window) func(string)
 			newpath := filepath.Join(os.Getenv("TESSDATA_PREFIX"), name)
 			f, err := os.Create(newpath)
 			if err != nil {
-				// TODO: surface error somewhere, prob with a dialog box
+				msg := fmt.Sprintf("Error creating temporary file to store custom training: %v\n", err)
+				dialog.ShowError(errors.New(msg), parent)
+				fmt.Fprintf(os.Stderr, msg)
 				sel.SetSelectedIndex(0)
 				return
 			}
 			defer f.Close()
 			_, err = io.Copy(f, uri)
 			if err != nil {
-				// TODO: surface error somewhere, prob with a dialog box
+				msg := fmt.Sprintf("Error copying custom training to temporary file: %v\n", err)
+				dialog.ShowError(errors.New(msg), parent)
+				fmt.Fprintf(os.Stderr, msg)
 				sel.SetSelectedIndex(0)
 				return
 			}
diff --git a/cmd/rescribe/main.go b/cmd/rescribe/main.go
index b33a66c..f532678 100644
--- a/cmd/rescribe/main.go
+++ b/cmd/rescribe/main.go
@@ -241,11 +241,33 @@ These training files are included in rescribe, and are always available:
 		}
 	}
 
-	// if trainingPath doesn't exist, set it to the embedded training instead
-	_, err = os.Stat(trainingPath)
-	if err != nil && !os.IsExist(err) {
-		trainingPath = filepath.Base(trainingPath)
-		trainingPath = filepath.Join(tessdatadir, trainingPath)
+	// copy training path to the tessdir directory, so that we can keep that a
+	// writeable space, which is needed opening other trainings in sandboxes
+	// like flatpak
+	in, err := os.Open(trainingPath)
+	trainingPath = filepath.Join(tessdatadir, filepath.Base(trainingPath))
+	if err != nil {
+		in, err = os.Open(trainingPath)
+		if err != nil {
+			log.Fatalf("Error opening training file %s: %v", trainingPath, err)
+		}
+	}
+	defer in.Close()
+	newPath := trainingPath + ".new"
+	out, err := os.Create(newPath)
+	if err != nil {
+		log.Fatalf("Error creating training file %s: %v", newPath, err)
+	}
+	defer out.Close()
+	_, err = io.Copy(out, in)
+	if err != nil {
+		log.Fatalf("Error copying training file to %s: %v", newPath, err)
+	}
+	in.Close()
+	out.Close()
+	err = os.Rename(newPath, trainingPath)
+	if err != nil {
+		log.Fatalf("Error moving new training file to %s: %v", trainingPath, err)
 	}
 
 	abstraining, err := filepath.Abs(trainingPath)
diff --git a/cmd/rescribe/xyz.rescribe.rescribe.yml b/cmd/rescribe/xyz.rescribe.rescribe.yml
index ae87d59..d994b88 100644
--- a/cmd/rescribe/xyz.rescribe.rescribe.yml
+++ b/cmd/rescribe/xyz.rescribe.rescribe.yml
@@ -1,6 +1,6 @@
 app-id: xyz.rescribe.rescribe
 runtime: org.freedesktop.Platform
-runtime-version: '22.08'
+runtime-version: '23.08'
 sdk: org.freedesktop.Sdk
 sdk-extensions: org.freedesktop.Sdk.Extension.golang
 build-options:
@@ -30,12 +30,16 @@ modules:
       - cp -r tessdata/* $FLATPAK_DEST/share/tessdata/
     sources:
       - type: git
-        url: https://github.com/rescribe/bookpipeline
-        tag: v1.1.0
-        commit: 3dd003691436ed954d3b7de54affbb10b509d5a6
+        url: ../..
+        commit: HEAD
+        #url: https://github.com/rescribe/bookpipeline
+        #tag: v1.1.0
+        #commit: 3dd003691436ed954d3b7de54affbb10b509d5a6
       - type: archive
-        url: https://rescribe.xyz/rescribe/modules-20230213-3dd003.tar.xz
-        sha256: 36553c4b97ceefc2c4711d18f26c98d89a9a610cb99bd2a38b7a0bbf3236eb4a
+        url: https://rescribe.xyz/tmp/modules.tar.xz # TODO: move to /rescribe once stable
+        sha256: 98b769cf61cc4178303e7d9e0aa0e036f819a46041aa442982713cb847e4657a
+        #url: https://rescribe.xyz/rescribe/modules-20230213-3dd003.tar.xz
+        #sha256: 36553c4b97ceefc2c4711d18f26c98d89a9a610cb99bd2a38b7a0bbf3236eb4a
         strip-components: 0
       - type: archive
         url: https://rescribe.xyz/rescribe/embeds/tessdata.20220322.zip