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package main
import (
"embed"
"golang.org/x/text/runes"
"golang.org/x/text/transform"
"golang.org/x/text/unicode/norm"
"html/template"
"log/slog"
"net/http"
"strings"
"unicode"
)
// Variables to customise the search
const (
listenStr = "0.0.0.0:8090"
)
//go:embed ods.txt
var ods string
//go:embed index.html
var templatesFS embed.FS
//go:embed static/*
var static embed.FS
// html templates
var indexTemplate = template.Must(template.New("index").ParseFS(templatesFS, "index.html"))
type IndexData struct {
HasQuery bool
Query string
Invalid bool
}
func getIndex() http.Handler {
data := IndexData{
HasQuery: false,
Query: "",
Invalid: true,
}
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Cache-Control", "no-store, no-cache")
indexTemplate.ExecuteTemplate(w, "index.html", data)
})
}
func postIndex() http.Handler {
normalizer := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
words := strings.Split(ods, "\n")
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
data := IndexData{
HasQuery: true,
Query: r.FormValue("query"),
Invalid: true,
}
query, _, _ := transform.String(normalizer, strings.TrimSpace(strings.ToUpper(data.Query)))
for _, w := range words {
if w == query {
data.Invalid = false
break
}
}
slog.Info("post", "word", query, "invalid", data.Invalid)
indexTemplate.ExecuteTemplate(w, "index.html", data)
})
}
func main() {
http.Handle("GET /static/", http.FileServer(http.FS(static)))
http.Handle("GET /", getIndex())
http.Handle("POST /", postIndex())
slog.Info("listening", "addr", listenStr)
if err := http.ListenAndServe(listenStr, nil); err != nil && err != http.ErrServerClosed {
slog.Error("error listening and serving", "error", err)
}
}
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