restructured viewmodels, better serialization

viewmodels/issue.go

@@ -0,0 +1,78 @@
+package viewmodels
+
+import (
+	"errors"
+	"strconv"
+	"time"
+
+	"github.com/Theodor-Springmann-Stiftung/kgpz_web/providers/xmlprovider"
+)
+
+const TLAYOUT = "2006-01-02"
+
+var TRANSLM = map[string][]string{
+	"January":   {"Januar", "Jan", "1"},
+	"February":  {"Februar", "Feb", "2"},
+	"March":     {"März", "Mär", "3"},
+	"April":     {"April", "Apr", "4"},
+	"May":       {"Mai", "Mai", "5"},
+	"June":      {"Juni", "Jun", "6"},
+	"July":      {"Juli", "Jul", "7"},
+	"August":    {"August", "Aug", "8"},
+	"September": {"September", "Sep", "9"},
+	"October":   {"Oktober", "Okt", "10"},
+	"November":  {"November", "Nov", "11"},
+	"December":  {"Dezember", "Dez", "12"},
+}
+
+var TRANSLD = map[string][]string{
+	"Monday":    {"Montag", "Mo"},
+	"Tuesday":   {"Dienstag", "Di"},
+	"Wednesday": {"Mittwoch", "Mi"},
+	"Thursday":  {"Donnerstag", "Do"},
+	"Friday":    {"Freitag", "Fr"},
+	"Saturday":  {"Samstag", "Sa"},
+	"Sunday":    {"Sonntag", "So"},
+}
+
+type IssueViewModel struct {
+	xmlprovider.Issue
+	Weekday []string
+	Day     int
+	Month   []string
+}
+
+func IssueView(y string, No string, lib *xmlprovider.Library) (*IssueViewModel, error) {
+	n, err := strconv.Atoi(No)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, i := range lib.Issues.Items.Issues {
+		if len(i.Datum.When) < 4 {
+			continue
+		}
+
+		d := i.Datum.When[:4]
+		if d == y && i.Number.No == n {
+			return FromIssue(i)
+		}
+	}
+
+	return nil, errors.New("Issue not found")
+}
+
+func FromIssue(i xmlprovider.Issue) (*IssueViewModel, error) {
+	t, err := time.Parse(TLAYOUT, i.Datum.When)
+	if err != nil {
+		return nil, err
+	}
+
+	ivm := IssueViewModel{
+		Issue:   i,
+		Weekday: append(TRANSLD[t.Weekday().String()], t.Weekday().String()),
+		Day:     t.Day(),
+		Month:   TRANSLM[t.Month().String()]}
+
+	return &ivm, nil
+}