Issue validation does not run

[DragosDumitrache]

Hello. I've been trying to set up mergeable to run on issues and pull requests. PR validations works fine, but no issue validation occurs. Mostly interested in ensuring a project and a milestone are added to an issue, and would expect a label and a comment to be added if the validation fails.

Hopefully Git didn't get the yaml indentation wrong below.

version: 2
mergeable:
  - when: issues.*
     validate:
       - do: description
          no_empty:
            enabled: true
            message: A description must be provided
       - do: label
          no_empty:
            enabled: true
            message: At least one label must be provided
       - do: milestone
          no_empty:
            enabled: true
            message: A milestone must be provided
       - do: project
          must_include:
            regex: 'Engineering|Product'
            message: A project must be provided
      fail:
        - do: labels
           labels: ['needs-info']
           mode: 'add'
        - do: comment
           payload:
             body: >
               One or more of following problems were found with this issue:
                - Description is missing
                - At least one label musts be provided
                - One milestone must be provided
                - One project must be provided

[paul-pop]

@DragosDumitrache I looked into this and the culprit is the implementation of the project.js validator as it only looks at PRs and not issues, hence returning this error:

TypeError: Cannot read property 'repo' of undefined
    at extractIssueIdsFromCards (/app/lib/validators/project.js:72:26)
    at Project.validate (/app/lib/validators/project.js:55:26)
    at async Promise.all (index 3)
    at async processWorkflow (/app/lib/flex/lib/processWorkflow.js:42:22)
    at async executeMergeable (/app/lib/flex/flex.js:35:3)
    at async /app/lib/mergeable.js:87:7

https://github.com/mergeability/mergeable/blob/bca0d6e237d0f484a3ca3347d6db4565ef25c9d7/lib/validators/project.js#L70-L84

An issue does not have the .head attribute so it can't retrieve the repo object.

[jusx]

@paul-pop @DragosDumitrache This is certainly a bug with the project validator. We will work on a fix for this.