1361 Add image deletion

[tomaszsmy]

No description provided.

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (816478d) 13.78% compared to head (f39c40f) 14.83%.

Files	Patch %	Lines
...u/web/content/multimedia/image/ImageComponent.java	81.48%	3 Missing and 2 partials ⚠️
.../content/multimedia/image/ImageEditController.java	0.00%	2 Missing ⚠️
...ontent/multimedia/image/ImageDeleteController.java	90.90%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1603      +/-   ##
============================================
+ Coverage     13.78%   14.83%   +1.05%     
- Complexity      454      482      +28     
============================================
  Files           257      258       +1     
  Lines          8503     8514      +11     
  Branches        881      882       +1     
============================================
+ Hits           1172     1263      +91     
+ Misses         7279     7196      -83     
- Partials         52       55       +3     

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[nya-elimu]

Getting this when trying to delete an image that is being used by a storybook chapter:

13:58:27.789 [qtp1974701110-20] WARN  org.hibernate.engine.jdbc.spi.SqlExceptionHelper - SQL Error: -8, SQLState: 23504
13:58:27.789 [qtp1974701110-20] ERROR org.hibernate.engine.jdbc.spi.SqlExceptionHelper - integrity constraint violation: foreign key no action; FKCNLKSDIKTH82EC6NIA8TB3CPS table: STORYBOOKCHAPTER

@tomaszsmy Note that there are two ways an Image can be used in a storybooks: 1) as a cover image, or 2) as a chapter image.

So we need to make it impossible to delete an Image if it is already being used in a storybook. Only images that are not used anywhere should be possible to delete.

Also, to make your task a bit easier, here you can see the various Image_ tables in the database:

> SHOW TABLES;
+--------------------------------------------+
| Tables_in_webapp-eng                       |
+--------------------------------------------+
| Application                                |
| ApplicationVersion                         |
| Application_literacySkills                 |
| Application_numeracySkills                 |
| Audio                                      |
| AudioContributionEvent                     |
| AudioPeerReviewEvent                       |
| Audio_Letter                               |
| Audio_Number                               |
| Audio_Word                                 |
| Audio_literacySkills                       |
| Audio_numeracySkills                       |
| Contributor                                |
| Contributor_roles                          |
| DbMigration                                |
| Device                                     |
| Emoji                                      |
| Emoji_Word                                 |
| Image                                      |
| ImageContributionEvent                     |
| Image_Letter                               |
| Image_Number                               |
| Image_Word                                 |
| Image_literacySkills                       |
| Image_numeracySkills                       |
| Letter                                     |
| LetterContributionEvent                    |
| LetterLearningEvent                        |
| LetterSoundCorrespondence                  |
| LetterSoundCorrespondenceContributionEvent |
| LetterSoundCorrespondencePeerReviewEvent   |
| LetterSoundCorrespondence_Letter           |
| LetterSoundCorrespondence_Sound            |
| Number                                     |
| NumberContributionEvent                    |
| NumberPeerReviewEvent                      |
| Number_Word                                |
| Sound                                      |
| SoundContributionEvent                     |
| StoryBook                                  |
| StoryBookChapter                           |
| StoryBookContributionEvent                 |
| StoryBookLearningEvent                     |
| StoryBookParagraph                         |
| StoryBookParagraph_Word                    |
| StoryBookPeerReviewEvent                   |
| Syllable                                   |
| Syllable_Sound                             |
| Video                                      |
| Video_Letter                               |
| Video_Number                               |
| Video_Word                                 |
| Video_literacySkills                       |
| Video_numeracySkills                       |
| Word                                       |
| WordContributionEvent                      |
| WordLearningEvent                          |
| WordPeerReviewEvent                        |
| Word_LetterSoundCorrespondence             |
+--------------------------------------------+
59 rows in set (0.00 sec)

These can also be seen in https://github.com/elimu-ai/webapp/blob/main/src/main/resources/META-INF/jpa-schema-export.sql