package admin

import (
	"fmt"
	"html/template"
	"net/http"
	"strings"

	"arimelody.me/arimelody.me/global"
	"arimelody.me/arimelody.me/music/model"
)

type (
    gatewayTrack struct {
        *model.Track
        Lyrics template.HTML
        Number int
    }

    gatewayRelease struct {
        *model.Release
        Tracks []gatewayTrack
    }
)

func serveRelease() http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        if r.URL.Path == "/" {
            http.NotFound(w, r)
            return
        }

        id := r.URL.Path[1:]
        release := global.GetRelease(id)
        if release == nil {
            http.NotFound(w, r)
            return
        }

        tracks := []gatewayTrack{}
        for i, track := range release.Tracks {
            tracks = append([]gatewayTrack{{
                Track: track,
                Lyrics: template.HTML(strings.Replace(track.Lyrics, "\n", "<br>", -1)),
                Number: len(release.Tracks) - i,
            }}, tracks...)
        }

        lrw := global.LoggingResponseWriter{ResponseWriter: w, Code: http.StatusOK}

        serveTemplate("edit-release.html", gatewayRelease{release, tracks}).ServeHTTP(&lrw, r)

        if lrw.Code != http.StatusOK {
            fmt.Printf("Error rendering admin release page for %s\n", id)
            return
        }
    })
}