Restructure go project (#2356)

* Move main to cmd
* Move api to internal
* Move logger and manager to internal
* Move shell hiding code to separate package
* Decouple job from desktop and utils
* Decouple session from config
* Move static into internal
* Decouple config from dlna
* Move desktop to internal
* Move dlna to internal
* Decouple remaining packages from config
* Move config into internal
* Move jsonschema and paths to models
* Make ffmpeg functions private
* Move file utility methods into fsutil package
* Move symwalk into fsutil
* Move single-use util functions into client package
* Move slice functions to separate packages
* Add env var to suppress windowsgui arg
* Move hash functions into separate package
* Move identify to internal
* Move autotag to internal
* Touch UI when generating backend

internal/manager/task_generate_screenshot.go

@@ -0,0 +1,89 @@
+package manager
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"os"
+	"time"
+
+	"github.com/stashapp/stash/pkg/logger"
+	"github.com/stashapp/stash/pkg/models"
+	"github.com/stashapp/stash/pkg/scene"
+)
+
+type GenerateScreenshotTask struct {
+	Scene               models.Scene
+	ScreenshotAt        *float64
+	fileNamingAlgorithm models.HashAlgorithm
+	txnManager          models.TransactionManager
+}
+
+func (t *GenerateScreenshotTask) Start(ctx context.Context) {
+	scenePath := t.Scene.Path
+	ffprobe := instance.FFProbe
+	probeResult, err := ffprobe.NewVideoFile(scenePath, false)
+
+	if err != nil {
+		logger.Error(err.Error())
+		return
+	}
+
+	var at float64
+	if t.ScreenshotAt == nil {
+		at = float64(probeResult.Duration) * 0.2
+	} else {
+		at = *t.ScreenshotAt
+	}
+
+	checksum := t.Scene.GetHash(t.fileNamingAlgorithm)
+	normalPath := instance.Paths.Scene.GetScreenshotPath(checksum)
+
+	// we'll generate the screenshot, grab the generated data and set it
+	// in the database. We'll use SetSceneScreenshot to set the data
+	// which also generates the thumbnail
+
+	logger.Debugf("Creating screenshot for %s", scenePath)
+	makeScreenshot(*probeResult, normalPath, 2, probeResult.Width, at)
+
+	f, err := os.Open(normalPath)
+	if err != nil {
+		logger.Errorf("Error reading screenshot: %s", err.Error())
+		return
+	}
+	defer f.Close()
+
+	coverImageData, err := io.ReadAll(f)
+	if err != nil {
+		logger.Errorf("Error reading screenshot: %s", err.Error())
+		return
+	}
+
+	if err := t.txnManager.WithTxn(context.TODO(), func(r models.Repository) error {
+		qb := r.Scene()
+		updatedTime := time.Now()
+		updatedScene := models.ScenePartial{
+			ID:        t.Scene.ID,
+			UpdatedAt: &models.SQLiteTimestamp{Timestamp: updatedTime},
+		}
+
+		if err := scene.SetScreenshot(instance.Paths, checksum, coverImageData); err != nil {
+			return fmt.Errorf("error writing screenshot: %v", err)
+		}
+
+		// update the scene cover table
+		if err := qb.UpdateCover(t.Scene.ID, coverImageData); err != nil {
+			return fmt.Errorf("error setting screenshot: %v", err)
+		}
+
+		// update the scene with the update date
+		_, err = qb.Update(updatedScene)
+		if err != nil {
+			return fmt.Errorf("error updating scene: %v", err)
+		}
+
+		return nil
+	}); err != nil {
+		logger.Error(err.Error())
+	}
+}