event item

go.mod

@@ -4,6 +4,7 @@ go 1.21.5
 
 require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/uuid v1.6.0 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	github.com/lib/pq v1.10.9 // indirect

go.sum

@@ -1,5 +1,7 @@
 github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/google/go-cmp v0.6.0 h1:ofyhxvXcZhMsU5ulbFiLKl/XBFqE1GSq7atu8tAmTRI=
+github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=

item/event.go

@@ -0,0 +1,50 @@
+package item
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+)
+
+type EventBody struct {
+	Title string    `json:"title"`
+	Start time.Time `json:"start"`
+	End   time.Time `json:"end"`
+}
+
+type Event struct {
+	ID string `json:"id"`
+	EventBody
+}
+
+func NewEvent(i Item) (Event, error) {
+	if i.Kind != KindEvent {
+		return Event{}, fmt.Errorf("item is not an event")
+	}
+
+	var e Event
+	if err := json.Unmarshal([]byte(i.Body), &e); err != nil {
+		return Event{}, fmt.Errorf("could not unmarshal item body: %v", err)
+	}
+
+	e.ID = i.ID
+
+	return e, nil
+}
+
+func (e Event) Item() (Item, error) {
+	body, err := json.Marshal(EventBody{
+		Title: e.Title,
+		Start: e.Start,
+		End:   e.End,
+	})
+	if err != nil {
+		return Item{}, fmt.Errorf("could not marshal event to json")
+	}
+
+	return Item{
+		ID:   e.ID,
+		Kind: KindEvent,
+		Body: string(body),
+	}, nil
+}

item/event_test.go

@@ -0,0 +1,78 @@
+package item_test
+
+import (
+	"fmt"
+	"testing"
+	"time"
+
+	"github.com/google/go-cmp/cmp"
+	"go-mod.ewintr.nl/planner/item"
+)
+
+func TestNewEvent(t *testing.T) {
+	t.Parallel()
+
+	for _, tc := range []struct {
+		name     string
+		it       item.Item
+		expEvent item.Event
+		expErr   bool
+	}{
+		{
+			name: "wrong kind",
+			it: item.Item{
+				ID:   "a",
+				Kind: item.KindTask,
+				Body: `{
+  "title":"title",
+  "start":"2024-09-20T08:00:00Z",
+  "end":"2024-09-20T10:00:00Z" 
+}`,
+			},
+			expErr: true,
+		},
+		{
+			name: "invalid json",
+			it: item.Item{
+				ID:   "a",
+				Kind: item.KindEvent,
+				Body: `{"id":"a"`,
+			},
+			expErr: true,
+		},
+		{
+			name: "valid",
+			it: item.Item{
+				ID:   "a",
+				Kind: item.KindEvent,
+				Body: `{
+  "title":"title",
+  "start":"2024-09-20T08:00:00Z",
+  "end":"2024-09-20T10:00:00Z" 
+}`,
+			},
+			expEvent: item.Event{
+				ID: "a",
+				EventBody: item.EventBody{
+					Title: "title",
+					Start: time.Date(2024, 9, 20, 8, 0, 0, 0, time.UTC),
+					End:   time.Date(2024, 9, 20, 10, 0, 0, 0, time.UTC),
+				},
+			},
+		},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			actEvent, err := item.NewEvent(tc.it)
+			actErr := err != nil
+			if tc.expErr != actErr {
+				t.Errorf("exp %v, got %v", tc.expErr, actErr)
+			}
+			if tc.expErr {
+				return
+			}
+			if diff := cmp.Diff(tc.expEvent, actEvent); diff != "" {
+				fmt.Errorf("(exp +, got -)\n%s", diff)
+			}
+		})
+	}
+}