Refactor to move cloud fn to top level

2023-10-08 15:05:12 +01:00 · 2023-10-08 15:05:12 +01:00 · 3559ca9ec1
commit 3559ca9ec1
parent 28abf0e461
14 changed files with 14 additions and 13 deletions
--- a/standalone/server/server.go
+++ b/standalone/server/server.go
@ -0,0 +1,81 @@
+package server
+
+import (
+	"fmt"
+	"html/template"
+	"log"
+	"net/http"
+	"sort"
+
+	"github.com/ray1729/wordsearch/anagram"
+	"github.com/ray1729/wordsearch/match"
+)
+
+func New(assetsPath string, matchDB match.DB, anagramDB anagram.DB) http.Handler {
+	mux := http.NewServeMux()
+	mux.Handle("/assets/", http.StripPrefix("/assets/", http.FileServer(http.Dir(assetsPath))))
+	mux.HandleFunc("/search", searchHandler(matchDB, anagramDB))
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		renderTemplate(w, home, nil)
+	})
+	return withRequestLogger(mux)
+}
+
+func withRequestLogger(h http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		log.Printf("%s %s %s", r.Method, r.URL.Path, r.URL.Query())
+		h.ServeHTTP(w, r)
+	})
+}
+
+func searchHandler(matchDB match.DB, anagramDB anagram.DB) func(w http.ResponseWriter, r *http.Request) {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if err := r.ParseForm(); err != nil {
+			log.Printf("error parsing form: %v", err)
+			http.Error(w, "error parsing form", http.StatusBadRequest)
+			return
+		}
+		switch r.Form.Get("mode") {
+		case "match":
+			params := matchResults(matchDB, r.Form.Get("pattern"))
+			renderTemplate(w, results, params)
+		case "anagrams":
+			params := anagramResults(anagramDB, r.Form.Get("pattern"))
+			renderTemplate(w, results, params)
+		default:
+			renderTemplate(w, results, ResultParams{})
+		}
+	}
+}
+
+func anagramResults(db anagram.DB, pattern string) ResultParams {
+	var params ResultParams
+	params.Results = db.FindAnagrams(pattern)
+	if len(params.Results) > 0 {
+		params.Preamble = fmt.Sprintf("Anagrams of %q:", pattern)
+	} else {
+		params.Preamble = fmt.Sprintf("Found no anagrams of %q", pattern)
+	}
+	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
+	return params
+}
+
+func matchResults(db match.DB, pattern string) ResultParams {
+	var params ResultParams
+	params.Results = db.FindMatches(pattern)
+	if len(params.Results) > 0 {
+		params.Preamble = fmt.Sprintf("Matches for %q:", pattern)
+	} else {
+		params.Preamble = fmt.Sprintf("Found no matches for %q", pattern)
+	}
+	sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
+	return params
+}
+
+func renderTemplate(w http.ResponseWriter, t *template.Template, params any) {
+	err := t.Execute(w, params)
+	if err != nil {
+		log.Printf("Error rendering template %s: %v", t.Name(), err)
+		http.Error(w, "Internal server error", http.StatusInternalServerError)
+	}
+}
--- a/standalone/server/templates.go
+++ b/standalone/server/templates.go
@ -0,0 +1,52 @@
+package server
+
+import "html/template"
+
+var home = template.Must(template.New("home").Parse(`
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<link rel="stylesheet" href="/assets/simple.css">
+	<link rel="stylesheet" href="/assets/custom.css">
+	<script src="/assets/htmx.min.js"></script>
+    <title>Anagram and Word Search</title>
+</head>
+<body>
+  <header>
+    <h1>Anagram and Word Search</h1>
+  </header>
+
+  <main>
+	<form action="/search" method="post" hx-boost="true" hx-target="#results">
+	  <div class="center">
+	    <input type="text" name="pattern" required></input>
+	    <button name="mode" value="match">Match</button>
+	    <button name="mode" value="anagrams">Anagrams</button>
+		<button type="reset">Clear</button>
+	  </div>
+    </form>
+	<div id="results">
+	</div>
+  </main>
+
+</body>
+</html>
+`))
+
+type ResultParams struct {
+	Preamble string
+	Results  []string
+}
+
+var results = template.Must(template.New("results").Parse(`
+{{ with .Preamble }}
+<p>{{ . }}</p>
+{{ end }}
+<ul>
+{{ range .Results }}
+  <li>{{.}}</li>
+{{ end }}
+</ul>
+`))