add viewmodel for article

cmd/frontend/main.go

@@ -1,12 +1,12 @@
 package main
 
 import (
-	//"fmt"
 	"crowsnest/internal/data"
 	"crowsnest/internal/model"
-	"fmt"
+	"crowsnest/internal/viewmodel"
 	"html/template"
 	"net/http"
+	"regexp"
 	"strings"
 )
 
@@ -21,8 +21,6 @@ type articleTermFrequency struct {
 func (ord articleTermFrequency) Weight(a *model.Article) int {
     score := 0
     for _, term := range ord.terms {
-        term = strings.TrimSpace(term)
-        if term == "" { continue }
         score += strings.Count(a.Content, term)
     }
     return score
@@ -30,32 +28,62 @@ func (ord articleTermFrequency) Weight(a *model.Article) int {
 
 
 func index(w http.ResponseWriter, req *http.Request) {
-    fds, _ := data.NewFileDatastore("./persistence/spiegel100.json")
-    
-    repo, _ := data.NewDefaultRepository[*model.Article](fds, "article")
-    articles, _ := repo.GetByCriteria(articleDateOrder{})
+    // retrieve from repo
+    fds, err := data.NewFileDatastore("./persistence/spiegel100.json")
+    if err != nil { panic(err) }
+    repo, err := data.NewDefaultRepository[*model.Article](fds, "article")
+    if err != nil { panic(err) }
+    articles, err := repo.GetByCriteria(articleDateOrder{})
+    if err != nil { panic(err) }
 
+    // convert to viewmodel
+    articleVMs := make([]*viewmodel.ArticleViewModel, 0, len(articles))
+    for _, a := range articles {
+        articleVMs = append(articleVMs, viewmodel.NewArticleViewModel(a))
+    }
+
+    // render template
     t := template.Must(template.ParseFiles("templates/article.html", "templates/layout.html"))
-    _ = t.ExecuteTemplate(w, "base", articles[:10])
+    err = t.ExecuteTemplate(w, "base", articleVMs[:10])
+    if err != nil { panic(err) }
 }
 
 func search(w http.ResponseWriter, req *http.Request) {
-    // Parse the form data
+    // parse the form data
     err := req.ParseForm()
     if err != nil {
         http.Error(w, "Unable to parse form", http.StatusBadRequest)
         return
     }
-    searchTerms := strings.Split(req.FormValue("search"), " ")
 
+    // collect search terms
+    p := regexp.MustCompile("\\s+")
+    searchTerms := make([]string, 0)
+    for _, elem := range p.Split(req.FormValue("search"), -1) {
+        elem = strings.TrimSpace(elem)
+        if elem == "" { continue }
+        searchTerms = append(searchTerms, elem)
+    }
 
+    // retrieve from repo
     fds, _ := data.NewFileDatastore("./persistence/spiegel100.json")
-    
     repo, _ := data.NewDefaultRepository[*model.Article](fds, "article")
-    articles, _ := repo.GetByCriteria(articleTermFrequency{ terms: searchTerms })
+    var articles []*model.Article
+    if len(searchTerms) != 0 {
+        articles, _ = repo.GetByCriteria(articleTermFrequency{ terms: searchTerms })
+    } else {
+        articles, _ = repo.GetAll()
+    }
+
+    // convert to viewmodel
+    articleVMs := make([]*viewmodel.ArticleViewModel, 0, len(articles))
+    for _, a := range articles {
+        articleVMs = append(articleVMs, viewmodel.NewArticleViewModel(a))
+    }
 
     t := template.Must(template.ParseFiles("templates/article.html", "templates/layout.html"))
-    _ = t.ExecuteTemplate(w, "base", articles)
+    err = t.ExecuteTemplate(w, "base", articleVMs)
+    if err != nil { panic(err) }
 }
 
 func main() {
@@ -67,9 +95,6 @@ func main() {
 	fs := http.FileServer(http.Dir("./static"))
 	http.Handle("/static", http.StripPrefix("/", fs))
 
-    t := template.Must(template.ParseFiles("templates/article.html"))
-    fmt.Println(t)
-
     // start server
     http.ListenAndServe(":8080", nil)
 }

internal/viewmodel/ArticleViewModel.go

@@ -0,0 +1,27 @@
+package viewmodel
+
+import "crowsnest/internal/model"
+
+
+type ArticleViewModel struct {
+    Title       string
+    Author      string
+    PublishDate string
+    SourceUrl   string
+    Summary     string
+}
+
+func NewArticleViewModel(a *model.Article) *ArticleViewModel {
+    summary := a.Content
+    if len(a.Content) > 200 {
+        summary = summary[:200]
+    }
+
+    return &ArticleViewModel{
+        Title: a.Title,
+        Author: a.Author,
+        PublishDate: a.PublishDate.Local().Format("02.01.2006 03:04"),
+        SourceUrl: a.SourceUrl,
+        Summary: summary,
+    }
+}

templates/article.html

@@ -5,9 +5,8 @@
 <div class="card p-2 m-4" style="">
   <div class="card-body">
       <h5 class="card-title">{{ .Title }}</h5>
-      <h6 class="card-subtitle mb-2 text-body-secondary">{{ .Author }}</h6>
-      <h6 class="card-subtitle mb-2 text-body-secondary">{{ .PublishDate }}</h6>
-      <p class="card-text">{{ .Content }}</p>
+      <h6 class="card-subtitle mb-2 text-body-secondary">{{ .Author }} - {{ .PublishDate }}</h6>
+      <p class="card-text">{{ .Summary }}</p>
     <a href="{{ .SourceUrl }}" class="card-link">Link</a>
   </div>
 </div>