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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"
"github.com/apex/log/handlers/memory"
)
//loadTemplate loads a list of templates, relative to the statikFS root, and a FuncMap, and returns a template object
func loadTemplate(templateNames []string, funcMap template.FuncMap) (*template.Template, error) {
if len(templateNames) == 0 {
return nil, fmt.Errorf("templateNames can't be empty")
}
tmpl := template.New(templateNames[0]).Funcs(funcMap)
statikFS, err := fs.New()
if err != nil {
return nil, err
}
for _, templateName := range templateNames {
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
}
tmpl, err = tmpl.Parse(string(contents))
if err != nil {
return nil, err
}
}
return tmpl, nil
}
// MakeFrontend returns a http.Handler
func MakeFrontend(memoryHandler *memory.Handler, gerritClient *gerrit.Client, runner *submitqueue.Runner) http.Handler {
router := gin.Default()
projectName := gerritClient.GetProjectName()
branchName := gerritClient.GetBranchName()
router.GET("/", func(c *gin.Context) {
var wipSerie *gerrit.Serie = nil
HEAD := ""
currentlyRunning := runner.IsCurrentlyRunning()
// don't trigger operations requiring a lock
if !currentlyRunning {
wipSerie = runner.GetWIPSerie()
HEAD = gerritClient.GetHEAD()
}
funcMap := template.FuncMap{
"changesetURL": func(changeset *gerrit.Changeset) string {
return gerritClient.GetChangesetURL(changeset)
},
}
tmpl := template.Must(loadTemplate([]string{
"submit-queue.tmpl.html",
"serie.tmpl.html",
"changeset.tmpl.html",
}, funcMap))
tmpl.ExecuteTemplate(c.Writer, "submit-queue.tmpl.html", gin.H{
// Config
"projectName": projectName,
"branchName": branchName,
// State
"currentlyRunning": currentlyRunning,
"wipSerie": wipSerie,
"HEAD": HEAD,
// History
"memory": memoryHandler,
})
})
return router
}
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