feat: define links in separate json file

internal/handlers/main.go

@@ -2,6 +2,8 @@
 package handlers
 
 import (
+	"encoding/json"
+	"io/fs"
 	"math"
 	"net/http"
 	"text/template"
@@ -10,21 +12,24 @@ import (
 	"github.com/StevanFreeborn/links.stevanfreeborn.com/internal/assets"
 )
 
+const LINKS_JSON_PATH = "json/links.json"
 const DAYS_IN_YEAR = 365
 const HOURS_IN_DAY = 24
 
 var birthday time.Time = time.Date(1993, time.April, 21, 0, 0, 0, 0, time.UTC)
 
+type Link struct {
+	Href string `json:"href"`
+	Icon string `json:"icon"`
+	Text string `json:"text"`
+}
+
 type IndexViewModel struct {
-	Age float64
+	Age   float64
+	Links []Link
 }
 
 func Index(w http.ResponseWriter, r *http.Request) {
-	// TODO: Links coming in external JSON data
-	// this could be static file in the repo
-	// or it could be fetched
-	// { link: "link", text: "text", "icon": "icon" }
-
 	t, err := template.ParseFS(assets.Templates, "templates/index.gohtml")
 
 	if err != nil {
@@ -32,10 +37,25 @@ func Index(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	linksFile, err := assets.JSON.Open(LINKS_JSON_PATH)
+
+	if err != nil {
+		http.Error(w, "Unable to load links", http.StatusInternalServerError)
+		return
+	}
+
+	links, err := readLinksFromJSON(linksFile)
+
+	if err != nil {
+		http.Error(w, "Unable to parse links", http.StatusInternalServerError)
+		return
+	}
+
 	age := time.Since(birthday).Hours() / HOURS_IN_DAY / DAYS_IN_YEAR
 
 	viewModel := IndexViewModel{
-		Age: math.Floor(age),
+		Age:   math.Floor(age),
+		Links: links,
 	}
 
 	t.Execute(w, viewModel)
@@ -48,3 +68,22 @@ func CSS(w http.ResponseWriter, r *http.Request) {
 func Fonts(w http.ResponseWriter, r *http.Request) {
 	http.ServeFileFS(w, r, assets.Fonts, r.URL.Path)
 }
+
+func Images(w http.ResponseWriter, r *http.Request) {
+	http.ServeFileFS(w, r, assets.Images, r.URL.Path)
+}
+
+func readLinksFromJSON(file fs.File) ([]Link, error) {
+	defer file.Close()
+	var links []Link
+
+	decoder := json.NewDecoder(file)
+
+	err := decoder.Decode(&links)
+
+	if err != nil {
+		return nil, err
+	}
+
+	return links, nil
+}