0ecc755b66
* Use embedded data sources * Optionally listen on a Unix domain socket * Server htmx and CSS from remote CDNs.
80 lines
2.4 KiB
Go
80 lines
2.4 KiB
Go
package server
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import (
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"fmt"
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"html/template"
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"log"
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"net/http"
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"sort"
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"github.com/ray1729/wordsearch/anagram"
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"github.com/ray1729/wordsearch/match"
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)
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func New(matchDB match.DB, anagramDB anagram.DB) http.Handler {
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mux := http.NewServeMux()
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mux.HandleFunc("/search", searchHandler(matchDB, anagramDB))
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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renderTemplate(w, home, nil)
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})
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return withRequestLogger(mux)
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}
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func withRequestLogger(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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log.Printf("%s %s %s", r.Method, r.URL.Path, r.URL.Query())
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h.ServeHTTP(w, r)
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})
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}
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func searchHandler(matchDB match.DB, anagramDB anagram.DB) func(w http.ResponseWriter, r *http.Request) {
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return func(w http.ResponseWriter, r *http.Request) {
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if err := r.ParseForm(); err != nil {
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log.Printf("error parsing form: %v", err)
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http.Error(w, "error parsing form", http.StatusBadRequest)
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return
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}
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switch r.Form.Get("mode") {
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case "match":
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params := matchResults(matchDB, r.Form.Get("pattern"))
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renderTemplate(w, results, params)
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case "anagrams":
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params := anagramResults(anagramDB, r.Form.Get("pattern"))
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renderTemplate(w, results, params)
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default:
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renderTemplate(w, results, ResultParams{})
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}
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}
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}
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func anagramResults(db anagram.DB, pattern string) ResultParams {
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var params ResultParams
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params.Results = db.FindAnagrams(pattern)
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if len(params.Results) > 0 {
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params.Preamble = fmt.Sprintf("Anagrams of %q:", pattern)
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} else {
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params.Preamble = fmt.Sprintf("Found no anagrams of %q", pattern)
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}
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sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
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return params
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}
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func matchResults(db match.DB, pattern string) ResultParams {
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var params ResultParams
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params.Results = db.FindMatches(pattern)
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if len(params.Results) > 0 {
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params.Preamble = fmt.Sprintf("Matches for %q:", pattern)
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} else {
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params.Preamble = fmt.Sprintf("Found no matches for %q", pattern)
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}
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sort.Slice(params.Results, func(i, j int) bool { return params.Results[i] < params.Results[j] })
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return params
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}
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func renderTemplate(w http.ResponseWriter, t *template.Template, params any) {
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err := t.Execute(w, params)
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if err != nil {
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log.Printf("Error rendering template %s: %v", t.Name(), err)
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http.Error(w, "Internal server error", http.StatusInternalServerError)
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}
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}
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