Save edited issue (first comment)

[SimonLab]

As a user I want to backup edits on issue So that I can see the history of this issue

• [x] catch "edit issue" webhook event
• [x] Get content file from S3 by looking for the {issue_id}.json file
• [x] Get existing data from Postgres for the issue
• [x] Add new version for the issue in Postgres with the author field updated
• [x] Update content of the json file to add the new version and upload the new content on S3

[SimonLab]

The webhook will send a request not only when the description is changed but also when the title of the issue is changed. We should only upload a new version of the issue on S3 when the description has changed otherwise if the title is changed we just need to update the issue title field in Postgres. Github provide a changes field on the payload that we can check to see the type of change:

description edit:

title edit:

[SimonLab]

we use build_assoc to add a new version on a specific comment:

• get the comment searching by comment_id, then create a new build_assoc with the param for the version (at the moment there is only the author of the edit) ref: https://elixircasts.io/adding-comments-with-ecto-associations https://hexdocs.pm/ecto/Ecto.html#build_assoc/3