From 5217357b4635fad76ca35e655517387f61ccbb2a Mon Sep 17 00:00:00 2001
From: "Gabriel A. Giovanini" <mail@gabrielgio.me>
Date: Mon, 1 Apr 2024 16:05:51 +0200
Subject: feat: Add view to select series

---
 main.go | 33 ++++++++++++++++++++++++++-------
 1 file changed, 26 insertions(+), 7 deletions(-)

(limited to 'main.go')

diff --git a/main.go b/main.go
index 22d1489..7a8d2a6 100644
--- a/main.go
+++ b/main.go
@@ -2,10 +2,12 @@ package main
 
 import (
 	"context"
+	"embed"
 	"errors"
 	"flag"
 	"fmt"
 	"io"
+	"log/slog"
 	"net/http"
 	"os"
 	"regexp"
@@ -20,15 +22,17 @@ import (
 )
 
 const (
-	FeedUrl = "https://api.jovemnerd.com.br/feed-nerdcast/"
+	feedUrl = "https://api.jovemnerd.com.br/feed-nerdcast/"
 )
 
 type (
-	ErrorRequestHandler func(w http.ResponseWriter, r *http.Request) error
+	errorRequestHandler func(w http.ResponseWriter, r *http.Request) error
 )
 
 var (
-	SerieRegex = regexp.MustCompile(`(?P<serie>.+) (?P<number>[0-9abc]+) \- (?P<title>.+)`)
+	//go:embed static/*
+	assets     embed.FS
+	serieRegex = regexp.MustCompile(`(?P<serie>.+) (?P<number>[0-9abc]+) \- (?P<title>.+)`)
 )
 
 var (
@@ -46,7 +50,6 @@ var (
 		"cloud":        "Nerd na Cloud [0-9]+",
 		"contar":       "Vou (T|t)e Contar [0-9]+",
 		"parceiro":     "Papo de Parceiro [0-9]+",
-		"cash":         "NerdCash [0-9]+",
 	}
 
 	feedRequest = promauto.NewHistogramVec(prometheus.HistogramOpts{
@@ -105,7 +108,7 @@ func fetchXML(_ context.Context) ([]byte, error) {
 		feedRequest.WithLabelValues(code).Observe(since)
 	}()
 
-	res, err := http.Get(FeedUrl)
+	res, err := http.Get(feedUrl)
 	if err != nil {
 		return nil, err
 	}
@@ -157,9 +160,10 @@ func filterBySeries(series []string, xml []byte, temper bool) ([]byte, error) {
 	return doc.WriteToBytes()
 }
 
-func handleError(next ErrorRequestHandler) http.HandlerFunc {
+func handleError(next errorRequestHandler) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		if err := next(w, r); err != nil {
+			slog.ErrorContext(r.Context(), "Error", "error", err.Error())
 			w.WriteHeader(http.StatusInternalServerError)
 		}
 	}
@@ -217,6 +221,20 @@ func titles(w http.ResponseWriter, r *http.Request) error {
 	return nil
 }
 
+func view(w http.ResponseWriter, r *http.Request) error {
+	data, err := assets.ReadFile("static/index.html")
+	if err != nil {
+		return err
+	}
+
+	_, err = w.Write(data)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
 func podcast(w http.ResponseWriter, r *http.Request) error {
 	xml, err := fetchXML(r.Context())
 	if err != nil {
@@ -253,7 +271,7 @@ func genSeries() error {
 	els := doc.FindElements("//channel/item")
 	for _, e := range els {
 		txt := e.FindElement("title").Text()
-		res := SerieRegex.FindStringSubmatch(txt)
+		res := serieRegex.FindStringSubmatch(txt)
 		if len(res) > 1 {
 			unique[res[1]] = nil
 		}
@@ -284,6 +302,7 @@ func main() {
 	mux := http.NewServeMux()
 	mux.Handle("/metrics", promhttp.Handler())
 	mux.HandleFunc("/titles", wrap(handleError(titles)))
+	mux.HandleFunc("/view", wrap(handleError(view)))
 	mux.HandleFunc("/", wrap(observe(handleError(podcast))))
 
 	server := http.Server{
-- 
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