feat: unifood base with GET dishes (#1)

Features:
- CLI structure with verbs and resources
- Application config and parameters
- Output formatters
- Initial resource: dishes

Reviewed-on: #1
Co-authored-by: bdoerfchen <git@bissendorf.co>
Co-committed-by: bdoerfchen <git@bissendorf.co>

model/resources/dish.go

@@ -0,0 +1,64 @@
+package resources
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"time"
+
+	"git.bissendorf.co/bissendorf/unifood/m/v2/model/external/stwbremen"
+	"git.bissendorf.co/bissendorf/unifood/m/v2/util"
+)
+
+func DishFromDTO(dish stwbremen.Dish) (*Dish, error) {
+	date, err := time.Parse(time.DateOnly, dish.Date)
+	if err != nil {
+		return nil, fmt.Errorf("unable to parse dish date: %w", err)
+	}
+
+	return &Dish{
+		Title:    dish.Title,
+		Location: dish.Location,
+		Date:     date,
+		Tags:     strings.Split(strings.Replace(dish.Tags, " ", "", -1), ","),
+		Counter:  dish.Counter,
+		Prices: util.Map(dish.Prices, func(i *stwbremen.Price) (string, float32) {
+			p, err := strconv.ParseFloat(strings.Trim(i.Price, " "), 32)
+			if err != nil {
+				p = 0
+			}
+			return i.Label, float32(p)
+		}),
+		Ingredients: util.Select(util.Transform(dish.Ingredients, func(i *stwbremen.Ingredient) ingredient {
+			return ingredient{
+				Name:        i.Label,
+				Additionals: i.Additionals,
+			}
+		}), func(i *ingredient) bool { return i.Name != "" }),
+	}, nil
+}
+
+const ResourceDish = "dish"
+
+type Dish struct {
+	Title       string
+	Location    string
+	Ingredients []ingredient
+	Prices      map[string]float32
+	Date        time.Time
+	Counter     string
+	Tags        []string
+}
+
+type ingredient struct {
+	Name        string
+	Additionals []string
+}
+
+func (d *Dish) Kind() string { return ResourceDish }
+func (d *Dish) Name() string { return d.Title }
+
+func (d *Dish) ColumnNames() []string { return []string{"Location", "Date", "Counter", "Price"} }
+func (d *Dish) Columns() []any {
+	return []any{d.Location, d.Date.Format(time.DateOnly), d.Counter, d.Prices["Studierende"]}
+}