Add hot tempalte reloading, WIP pos

dict/main.go

@@ -30,7 +30,12 @@ func LoadDict() error {
 type Entry struct {
 	Kanji       string
 	Reading     string
-	Definitions []string
+	Definitions []Definition
+}
+
+type Definition struct {
+	Definition   string
+	PartOfSpeech string
 }
 
 func ParseEntry(entry jmdict.JmdictEntry) Entry {
@@ -42,11 +47,18 @@ func ParseEntry(entry jmdict.JmdictEntry) Entry {
 	if len(entry.Readings) > 0 {
 		reading = entry.Readings[0].Reading
 	}
-	var definitions []string
+	var definitions []Definition
 	if len(entry.Sense) > 0 && len(entry.Sense[0].Glossary) > 0 {
-		definitions = make([]string, len(entry.Sense[0].Glossary))
+		definitions = make([]Definition, len(entry.Sense[0].Glossary))
 		for i, glossary := range entry.Sense[0].Glossary {
-			definitions[i] = glossary.Content
+			var pos string
+			if len(entry.Sense[0].PartsOfSpeech) > i+1 {
+				pos = entry.Sense[0].PartsOfSpeech[i]
+			}
+			definitions[i] = Definition{
+				Definition:   glossary.Content,
+				PartOfSpeech: pos,
+			}
 		}
 	}
 	return Entry{

dict/templates/definition.html

@@ -0,0 +1,3 @@
+{{ define "definition" }}
+{{ if .PartOfSpeech }}<chip>{{ .PartOfSpeech }}</chip> {{ end }}{{ .Definition -}}
+{{ end }}

dict/templates/search.html

@@ -9,11 +9,11 @@
         {{- end -}}
     </h3>
     {{ if le (len .Definitions) 2 -}}
-    <p>{{- index .Definitions 0 -}}</p>
+    <p>{{- template "definition" (index .Definitions 0) -}}</p>
     {{- else -}}
     <ol>
         {{- range .Definitions }}
-        <li>{{- . -}}</li>
+        <li>{{- template "definition" . -}}</li>
         {{- end }}
     </ol>
     {{- end }}

httputils/handler.go

@@ -3,25 +3,68 @@ package httputils
 import (
 	"fmt"
 	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
 	"text/template"
+	"time"
 )
 
 type Handler = func(http.ResponseWriter, *http.Request)
 
+const templateFolder = "templates"
+
+var templatePaths, templateModTimes, _ = getTemplates()
+var templates *template.Template = template.Must(template.ParseFiles(templatePaths...))
+
+func getTemplates() ([]string, map[string]time.Time, error) {
+	var modTimes map[string]time.Time = make(map[string]time.Time)
+	err := filepath.Walk(templateFolder, func(path string, info os.FileInfo, err error) error {
+		if err != nil {
+			return err
+		}
+		if !info.IsDir() && strings.HasSuffix(path, ".html") {
+			modTimes[path] = info.ModTime()
+		}
+		return nil
+	})
+	paths := make([]string, len(modTimes))
+	i := 0
+	for path := range modTimes {
+		paths[i] = path
+		i++
+	}
+	return paths, modTimes, err
+}
+
+func reloadTemplateIfModified(path string) {
+	fileInfo, _ := os.Stat(path)
+	modTime := fileInfo.ModTime()
+	if modTime.After(templateModTimes[path]) {
+		fmt.Printf("Reloading template %s...\n", path)
+		templates.ParseFiles(path)
+		templateModTimes[path] = modTime
+	}
+}
+
+func reloadTemplatesIfModified() {
+	for _, path := range templatePaths {
+		reloadTemplateIfModified(path)
+	}
+}
+
+const reloadTemplates = true
+
 func GenerateHandler(
 	file string,
 	handler func(http.ResponseWriter, *http.Request) bool,
 	data func(http.ResponseWriter, *http.Request) any,
 	methods []string,
 ) Handler {
-	var tmpl *template.Template
-	//if file != "" {
-	//	tmpl = template.Must(template.ParseFiles(fmt.Sprintf("templates/%s", file)))
-	//}
 	return func(w http.ResponseWriter, r *http.Request) {
-		// Remove in production, enables live template reloading
-		if file != "" {
-			tmpl = template.Must(template.ParseFiles(fmt.Sprintf("templates/%s", file)))
+		// All templates must be reloaded in case of dependencies
+		if reloadTemplates {
+			reloadTemplatesIfModified()
 		}
 		for _, method := range methods {
 			if method == r.Method {
@@ -32,9 +75,9 @@ func GenerateHandler(
 		return
 	ok:
 		renderTemplate := handler(w, r)
-		if renderTemplate && tmpl != nil {
+		if renderTemplate && file != "" {
 			w.Header().Set("Content-Type", "text/html; charset=utf-8")
-			tmpl.Execute(w, data(w, r))
+			templates.ExecuteTemplate(w, file, data(w, r))
 		}
 	}
 }