WIP: experiment to convert macaron to gin

[lunny]

This PR is an experiment to convert macaron to gin.
It moved all static files from macaron's middleware to gin's.
It made macaron as a middleware of gin, so that we can keep most of routes and move step by step.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@46d3d10). Click here to learn what that means.
The diff coverage is 45.83%.

@@            Coverage Diff            @@
##             master    #7177   +/-   ##
=========================================
  Coverage          ?   41.73%           
=========================================
  Files             ?      450           
  Lines             ?    61143           
  Branches          ?        0           
=========================================
  Hits              ?    25519           
  Misses            ?    32307           
  Partials          ?     3317

Impacted Files	Coverage Δ
routers/routes/routes.go	83.79% <100%> (ø)
routers/routes/gin_bridge.go	43.47% <43.47%> (ø)

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[appleboy]

c.AbortWithStatus(http.StatusOK)

[lunny]

done.

[lunny]

@kolaente golangci-lint failed because

routers/routes/gin.go:35:9: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary) (golint)
--
583 | } else {
584 | ^
585 | Makefile:471: recipe for target 'golangci-lint' failed

But I don't think there is another better style. :(

[jolheiser]

What about something like

var uname string
if v, ok := ctx.Get("SignedUserName"); ok {
  uname = v.(string)
}
return uname

[kolaente]

@lunny Exactly what @jolheiser meant is needed here.

[lunny]

@zeripath I think your suggest is not right. v is a local variable only available in if or else.

[zeripath]

Oh I see. Switch em round?

[zeripath]

So

func SignedUserName(ctx *gin.Context) string {
	if v, ok := ctx.Get("SignedUserName"); ok {
		return v.(string)
	}
	return ""
}

[vtolstov]

Can you provide some info why gin and not chi ?

[lunny]

@vtolstov No reason from me. Just an experiment. I post a vote issue, see #7403

[vtolstov]

Thank you

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 months. Thank you for your contributions.

[lunny]

related with #7403

[lunny]

Closed by #7420