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package main
import (
"net/http"
"path/filepath"
"strings"
"fmt"
"riedstra.dev/mitch/go-website/mapcache"
"riedstra.dev/mitch/go-website/page"
"riedstra.dev/mitch/go-website/rediscache"
)
func (a *App) Handler() http.Handler {
mux := http.NewServeMux()
type route struct {
path string
handler http.Handler
}
routes := []route{
{a.ReIndexPath, a.RebuildIndexHandler()},
{"/static/", a.StaticHandler()},
}
cacheableRoutes := []route{
{a.FeedPrefix, http.StripPrefix(a.FeedPrefix, a.FeedHandler())},
{"/", a.PageHandler()},
}
for _, route := range routes {
mux.Handle(route.path, route.handler)
}
if a.cache == nil && a.RedisKey != "" {
a.cache = mapcache.New()
}
var cacheHandler func(http.Handler) http.Handler = nil
switch {
case a.mapCache:
cacheHandler = a.cache.Handle
case a.redisPool != nil:
cacheHandler = func(h http.Handler) http.Handler {
return rediscache.Handle(a.redisPool, a.RedisKey, h)
}
default:
// No caching middleware
cacheHandler = func(h http.Handler) http.Handler {
return h
}
}
if cacheHandler == nil {
panic("cacheHandler cannot be nil")
}
for _, r := range cacheableRoutes {
fmt.Printf("Calling mux.Handle(r.path(%s), cacheHandler(r.handler(%v)))\n",
r.path, r.handler)
mux.Handle(r.path, cacheHandler(r.handler))
}
return mux
}
func (a *App) PageHandler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
u := page.GetURLPath(r)
// Render nothing inside of the template directory
if strings.HasPrefix(u[1:], filepath.Clean(page.TemplateDirectory)) {
return
}
u = filepath.Join(".", u)
page.RenderWithVars(w, r, u, map[string]interface{}{})
})
}
func (a *App) RebuildIndexHandler() http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
u := page.GetPagePath(r)
p := page.NewPage("index")
err := p.RebuildIndex()
page.RenderWithVars(w, r, u, map[string]interface{}{
"IndexError": err,
})
})
}
// StaticHandler simply returns a HTTP handler that looks at the current
// directory and exposes `static` via HTTP `/static`.
func (a *App) StaticHandler() http.Handler {
return http.StripPrefix("/static/", http.FileServer(http.Dir(a.StaticDirectory)))
}
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