104 lines
2.1 KiB
Go
104 lines
2.1 KiB
Go
// Package handlers provides HTTP handlers for the web application.
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package handlers
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import (
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"encoding/json"
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"io/fs"
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"math"
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"net/http"
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"text/template"
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"time"
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"github.com/StevanFreeborn/links.stevanfreeborn.com/internal/assets"
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)
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const LINKS_JSON_PATH = "json/links.json"
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const DAYS_IN_YEAR = 365
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const HOURS_IN_DAY = 24
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var birthday time.Time = time.Date(1993, time.April, 21, 0, 0, 0, 0, time.UTC)
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type Link struct {
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Href string `json:"href"`
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Icon string `json:"icon"`
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Text string `json:"text"`
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}
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type IndexViewModel struct {
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Age float64
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Links []Link
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}
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func Index(w http.ResponseWriter, r *http.Request) {
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t, parseTemplateError := template.ParseFS(assets.Templates, "templates/index.gohtml")
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if parseTemplateError != nil {
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http.Error(w, "Unable to load template", http.StatusInternalServerError)
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return
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}
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linksFile, openLinksFileError := assets.JSON.Open(LINKS_JSON_PATH)
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if openLinksFileError != nil {
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http.Error(w, "Unable to load links", http.StatusInternalServerError)
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return
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}
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links, readLinksFileError := readLinksFromJSON(linksFile)
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if readLinksFileError != nil {
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http.Error(w, "Unable to parse links", http.StatusInternalServerError)
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return
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}
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age := time.Since(birthday).Hours() / HOURS_IN_DAY / DAYS_IN_YEAR
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viewModel := IndexViewModel{
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Age: math.Floor(age),
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Links: links,
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}
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executeError := t.Execute(w, viewModel)
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if executeError != nil {
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http.Error(w, "Unable to render template", http.StatusInternalServerError)
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return
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}
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}
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func CSS(w http.ResponseWriter, r *http.Request) {
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http.ServeFileFS(w, r, assets.CSS, r.URL.Path)
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}
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func Fonts(w http.ResponseWriter, r *http.Request) {
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http.ServeFileFS(w, r, assets.Fonts, r.URL.Path)
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}
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func Images(w http.ResponseWriter, r *http.Request) {
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http.ServeFileFS(w, r, assets.Images, r.URL.Path)
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}
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func readLinksFromJSON(file fs.File) ([]Link, error) {
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var closeErr error = nil
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defer func() {
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closeErr = file.Close()
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}()
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if closeErr != nil {
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return nil, closeErr
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}
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var links []Link
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decoder := json.NewDecoder(file)
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err := decoder.Decode(&links)
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if err != nil {
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return nil, err
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}
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return links, nil
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}
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