Add "dry run" options for push-to-ghost command

These options make Seance go through the motions of processing a
post without actually uploading images and/or pushing them to
Ghost. This makes it easier to test out stuff for new features
(or, more accurately, it reduces the need to clean up afterwards!)

cli.js

@@ -140,8 +140,15 @@ program.command('fetch-medium <post_url>')
 program.command('push-ghost <file>')
   .alias('push')
   .description('push a downloaded Medium post to Ghost')
-  .action((file) => {
-    seance.pushToGhost(file)
+  .option('-d, --dry-run', "full dry run: doesn't upload anything (same as --no-upload --no-push)")
+  .option('--no-upload', "partial dry run: don't upload images")
+  .option('--no-push', "partial dry run: don't push to ghost")
+  .action((file, o) => {
+    seance.pushToGhost(file, {
+      dryRun: o.dryRun,
+      noUpload: !o.upload,
+      noPush: !o.push,
+    })
   });
 
 program.command('medium-to-ghost <mediumUrl>')

seance.js

@@ -110,15 +110,28 @@ class Seance {
 
   /**
    * function [pushToGhost]
+   * @description
+   * Pre-processes and uploads the given article to Ghost
+   *
+   * @param {Boolean} options.noUpload Skip uploading of images
+   * @param {Boolean} options.noPush Skip pushing to Ghost; just generate the file
+   * @param {Boolean} options.dryRun Combination of noUpload and noPush
    * @returns [string] status
   */
-  async pushToGhost (postSlug) {
+  async pushToGhost (postSlug, options={}) {
     this.emit('update', {
       status: 'starting',
       message: 'Starting upload: ' + postSlug,
       loglevel: 'info'
     })
 
+    if (!!options.dryRun) {
+      options.noUpload = true
+      options.noPush = true
+    }
+
+    console.log('noUpload', options.noUpload)
+
     // Decide working path
     var postFolder = path.resolve('content/' + postSlug)
 
@@ -256,7 +269,9 @@ class Seance {
             uploadedImages.push(imageName)
 
             // Let's wait for the upload, just to avoid conflicts
+            if (!options.noUpload) {
               await this.uploadDav(davPath, imagePath)
+            }
 
             newLine = '![' + imageAlt + '](' + uploadedPath + '/' + imageName + ')'
           }
@@ -304,7 +319,10 @@ class Seance {
             loglevel: 'info'
           })
 
+          if (!options.noUpload) {
             this.uploadDav(davPath, imagePath)
+          }
+
           featuredImagePath = uploadedPath + '/' + imageName
         }
       }
@@ -325,6 +343,7 @@ class Seance {
       loglevel: 'info'
     })
 
+    if (!options.noPush) {
       let res = await this.ghostAdmin.posts.add({
         title: postMeta.title,
         custom_excerpt: postMeta.subtitle || null,
@@ -348,8 +367,6 @@ class Seance {
         loglevel: 'info'
       })
 
-    console.log(res)
-
       return {
         slug: res.slug,
         id: res.id,
@@ -360,7 +377,20 @@ class Seance {
         subtitle: res.custom_excerpt,
         status: res.status,
       }
-  };
+    } else {
+      // just return without pushing to Ghost
+      return {
+        slug: postSlug,
+        id: 0,
+        uuid: 0,
+        preview_url: null,
+        primary_author: {},
+        title: postMeta.title,
+        subtitle: postMeta.subtitle,
+        status: 'none',
+      }
+    }
+  }
 
 
   /**