✨ Entry implements json.Unmarshaler

models/entry.go

@@ -179,6 +179,50 @@ func (e Entry) MarshalJSON() ([]byte, error) {
 	return json.Marshal(out)
 }
 
-func (e *Entry) UnmarshalJSON([]byte) error {
+func (e *Entry) UnmarshalJSON(in []byte) error {
+	out := map[string]any{}
+	dec := json.NewDecoder(bytes.NewReader(in))
+	dec.UseNumber()
+	err := dec.Decode(&out)
+	if err != nil {
+		return newParsingError(err)
+	}
+	title, ok := out["title"].(string)
+	if !ok || title == "" {
+		return ErrorMissingTitle
+	}
+	e.Title = title
+	delete(out, "title")
+	dates, ok := out["date"].(string)
+	if !ok || dates == "" {
+		return ErrorMissingDate
+	}
+	date, err := time.Parse(time.RFC3339, dates)
+	if err != nil {
+		return newParsingError(err)
+	}
+	e.Date = date
+	delete(out, "date")
+	for k, v := range out {
+		m := Meta{Key: k}
+		if vs, ok := v.(string); ok {
+			if vd, err := time.Parse(time.RFC3339, vs); err == nil {
+				m.Value = vd
+			} else {
+				m.Value = vs
+			}
+		} else if n, ok := v.(json.Number); ok {
+			it, _ := n.Int64()
+			fl, _ := n.Float64()
+			if float64(it) == fl {
+				m.Value = it
+			} else {
+				m.Value = fl
+			}
+		} else {
+			m.Value = v
+		}
+		e.Fields = append(e.Fields, m)
+	}
 	return nil
 }

models/entry_test.go

@@ -233,7 +233,7 @@ func getEntryJsonMarshalTestRunner(title string, date time.Time, fields []Meta,
 }
 
 func TestEntryJsonUnmarshal(t *testing.T) {
-	when := time.Now()
+	when := time.Now().Truncate(time.Second)
 	whens := when.Format(time.RFC3339)
 	simple := []Meta{}
 	tests := []struct {
@@ -250,6 +250,7 @@ func TestEntryJsonUnmarshal(t *testing.T) {
 		{"empty-title", `{"title":"","date":"` + whens + `"}`, "", when, simple, ErrorMissingTitle},
 		{"empty-date", `{"title":"A Title","date":""}`, "", when, simple, ErrorMissingDate},
 		{"bad-date", `{"title":"A Title","date":"bad"}`, "", when, simple, ErrorParsing},
+		{"bad-json", `{"title":"A Title","date":"`, "", when, simple, ErrorParsing},
 		{
 			"single-field",
 			`{"title":"A Title","date":"` + whens + `","hello":"Hi"}`,
@@ -260,10 +261,10 @@ func TestEntryJsonUnmarshal(t *testing.T) {
 		},
 		{
 			"many-fields",
-			`{"title":"A Title","date":"` + whens + `","hello":"Hi","bye":42,"b":true}`,
+			`{"title":"A Title","date":"` + whens + `","hello":"Hi","bye":42,"b":true,"fl":42.13}`,
 			"A Title",
 			when,
-			[]Meta{{"hello", "Hi"}, {"bye", 42}, {"b", true}},
+			[]Meta{{"hello", "Hi"}, {"bye", int64(42)}, {"b", true}, {"fl", float64(42.13)}},
 			nil,
 		},
 		{
@@ -284,14 +285,16 @@ func TestEntryJsonUnmarshal(t *testing.T) {
 func getEntryJsonUnmarshalTestRunner(in, title string, date time.Time, fields []Meta, err error) func(t *testing.T) {
 	return func(t *testing.T) {
 		e := new(Entry)
-		er := json.Unmarshal([]byte(in), e)
+		er := e.UnmarshalJSON([]byte(in))
 		if err != nil {
 			assert.ErrorIs(t, er, err)
 			return
 		}
 
+		assert.Nil(t, er)
 		assert.Equal(t, title, e.Title)
 		assert.WithinRange(t, e.Date, date.Add(-time.Second), date.Add(time.Second))
+		assert.Len(t, e.Fields, len(fields))
 		for _, f := range fields {
 			got := false
 			for _, m := range e.Fields {
@@ -308,7 +311,7 @@ func getEntryJsonUnmarshalTestRunner(in, title string, date time.Time, fields []
 					break
 				}
 			}
-			assert.Truef(t, got, "Couldn't find field %+v", f)
+			assert.Truef(t, got, "Couldn't find field %+v. We have %+v", f, e.Fields)
 		}
 	}
 }