[Feature Request] Add support for conditions in Message Template

[dinesh-it]

I want to construct a message template with github link to pull request/branch with the PR/branch name. Currently I was able to achieve this by constructing the template like

<{link}|{name} - {number}>
Github: <{%vcsroot.GitHub_MyProject.url%}/{%teamcity.build.branch%}|{%teamcity.pullRequest.title%}>
```Changes: {changes}```
Branch: {branch}
Status: {status}
{mentions} {reason}

But I have few issues with this

• The URL constructed for master builds are wrong because {%teamcity.build.branch%} will be master but I need tree/master it is pull/1 when the build starts for a pull request and so works fine for PR but not for master.
• {changes} is empty when the build starts
• {%teamcity.pullRequest.title%} is empty when build runs against a branch

But I feel like I will be able to solve most of the above problems(at least hack around) if template supports if else elseif blocks. May be support for freemarker?

I know there are other forked repos with this feature, but I think this plugin works fine and no issues at all, just that a feature is missing.

[alexkvak]

Hi,

In the beginning of the plugin life I have some thoughts about condition templating but it seemed as complicated thing.

The time has come.

Could you share some links to the forks that have this feature?

[dinesh-it]

Hi, here is a commit - Ecwid/tcSlackBuildNotifier@d54d723

Seems not a fork just another variant of the plugin. Sorry about that.

This might be helpful - https://github.com/seratch/xsbt-scalag-plugin/blob/master/src/main/scala/scalag/freemarker.scala

[avg07]

Hello. Sorry, what about if else elseif blocks support?