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package frontend
import (
"fmt"
"io/ioutil"
"net/http"
"html/template"
"github.com/gin-gonic/gin"
"github.com/rakyll/statik/fs"
"github.com/tweag/gerrit-queue/gerrit"
_ "github.com/tweag/gerrit-queue/statik" // register static assets
"github.com/tweag/gerrit-queue/submitqueue"
)
// Frontend holds a gin Engine and the Sergequeue object
type Frontend struct {
Router *gin.Engine
SubmitQueue *submitqueue.SubmitQueue
}
//loadTemplate loads a single template from statikFS and returns a template object
func loadTemplate(templateName string, funcMap template.FuncMap) (*template.Template, error) {
statikFS, err := fs.New()
if err != nil {
return nil, err
}
tmpl := template.New(templateName).Funcs(funcMap)
r, err := statikFS.Open("/" + templateName)
if err != nil {
return nil, err
}
defer r.Close()
contents, err := ioutil.ReadAll(r)
if err != nil {
return nil, err
}
return tmpl.Parse(string(contents))
}
// MakeFrontend configures the router and returns a new Frontend struct
func MakeFrontend(runner *submitqueue.Runner, submitQueue *submitqueue.SubmitQueue) *Frontend {
router := gin.Default()
funcMap := template.FuncMap{
"isAutoSubmittable": func(serie *submitqueue.Serie) bool {
return submitQueue.IsAutoSubmittable(serie)
},
"changesetURL": func(changeset *gerrit.Changeset) string {
return submitQueue.GetChangesetURL(changeset)
},
}
tmpl := template.Must(loadTemplate("submit-queue.tmpl.html", funcMap))
router.SetHTMLTemplate(tmpl)
router.GET("/submit-queue.json", func(c *gin.Context) {
// FIXME: do this periodically
err := submitQueue.UpdateHEAD()
if err != nil {
c.AbortWithError(http.StatusBadGateway, fmt.Errorf("unable to update HEAD"))
}
c.JSON(http.StatusOK, submitQueue)
})
router.GET("/", func(c *gin.Context) {
// FIXME: do this periodically
// TODO: add hyperlinks to changesets
err := submitQueue.UpdateHEAD()
if err != nil {
c.AbortWithError(http.StatusBadGateway, fmt.Errorf("unable to update HEAD"))
}
c.HTML(http.StatusOK, "submit-queue.tmpl.html", gin.H{
"series": submitQueue.Series,
"projectName": submitQueue.ProjectName,
"branchName": submitQueue.BranchName,
"HEAD": submitQueue.HEAD,
})
})
return &Frontend{
Router: router,
SubmitQueue: submitQueue,
}
}
func (f *Frontend) ServeHTTP(w http.ResponseWriter, r *http.Request) {
f.Router.ServeHTTP(w, r)
}
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