[milo] Refactor all html knowledge out of backends.

milo/frontend/frontpage.go

-// Copyright 2016 The LUCI Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package frontend
-
-import (
-        "github.com/luci/luci-go/server/router"
-        "github.com/luci/luci-go/server/templates"
-
-        "github.com/luci/luci-go/common/sync/parallel"
-        "github.com/luci/luci-go/milo/api/resp"
-        "github.com/luci/luci-go/milo/buildsource/buildbot"
-        "github.com/luci/luci-go/milo/buildsource/buildbucket"
-        "github.com/luci/luci-go/milo/common"
-)
-
-func frontpageHandler(c *router.Context) {
-        fp := resp.FrontPage{}
-        var mBuildbot, mBuildbucket *resp.CIService
-
-        err := parallel.FanOutIn(func(ch chan<- func() error) {
-                ch <- func() (err error) {
-                        mBuildbot, err = buildbot.GetAllBuilders(c.Context)
-                        return err
-                }
-                ch <- func() (err error) {
-                        mBuildbucket, err = buildbucket.GetAllBuilders(c.Context)
-                        return err
-                }
-        })
-
-        fp.CIServices = append(fp.CIServices, *mBuildbucket)
-        fp.CIServices = append(fp.CIServices, *mBuildbot)
-        errMsg := ""
-        if err != nil {
-                errMsg = err.Error()
-        }
-        templates.MustRender(c.Context, c.Writer, "pages/frontpage.html", templates.Args{
-                "frontpage": fp,
-                "error":     errMsg,
-        })
-}
-
-func frontpageTestData() []common.TestBundle {
-        data := &templates.Args{
-                "frontpage": resp.FrontPage{
-                        CIServices: []resp.CIService{
-                                {
-                                        Name: "Module 1",
-                                        BuilderGroups: []resp.BuilderGroup{
-                                                {
-                                                        Name: "Example master A",
-                                                        Builders: []resp.Link{
-                                                                *resp.NewLink("Example builder", "/master1/buildera"),
-                                                                *resp.NewLink("Example builder 2", "/master1/builderb"),
-                                                        },
-                                                },
-                                        },
-                                },
-                        },
-                },
-                "error": "couldn't find ice cream",
-        }
-        return []common.TestBundle{
-                {
-                        Description: "Basic frontpage",
-                        Data:        *data,
-                },
-        }
-}