feat: resource list and table output formatter

.vscode/launch.json

@@ -13,8 +13,6 @@
             "args": [
                 "get", "dishes", 
                 "-o", "yaml", 
-                "-d", "2025-07-21",
-                "--print-config"
             ]
         }
     ]

cmd/root.go

@@ -31,7 +31,7 @@ func initRootCmd() {
 	var appConfig AppConfig
 
 	rootCmd.PersistentFlags().BoolVarP(&appConfig.OutputVerbose, "verbose", "v", false, "Enable verbose output")
-	rootCmd.PersistentFlags().StringVarP(&appConfig.OutputFormatter, "output", "o", "json", "Set output format")
+	rootCmd.PersistentFlags().StringVarP(&appConfig.OutputFormatter, "output", "o", "table", "Set output format")
 	rootCmd.PersistentFlags().BoolVar(&appConfig.PrintConfig, "print-config", false, "Enable printing the application config")
 
 	logger := jlog.New(slog.LevelDebug)

cmd/verbs.go

@@ -26,7 +26,7 @@ type VerbItem struct {
 var verbs = []VerbItem{
 	{
 		Name:        interfaces.VerbGet,
-		Description: "Retrieve resource information",
+		Description: "Retrieve a list of resources",
 		RunFn: func(ctx context.Context, config *AppConfig, handler interfaces.ResourceHandler, params params.Container) error {
 			h, ok := handler.(interfaces.GetHandler)
 			if !ok {

core/handler/dishes/handler.go

@@ -24,7 +24,7 @@ const (
 	paramLocation = "location"
 )
 
-func (h *DishesHandler) Get(ctx context.Context, params params.Container) ([]any, error) {
+func (h *DishesHandler) Get(ctx context.Context, params params.Container) (*interfaces.ResourceList, error) {
 	// Read parameters
 	p, err := params.GetValue(paramDate)
 	if err != nil {
@@ -55,14 +55,17 @@ func (h *DishesHandler) Get(ctx context.Context, params params.Container) ([]any
 	}
 
 	// Return
-	return util.Transform(*dishes, func(i *stwbremen.Dish) any {
+	return &interfaces.ResourceList{
+		ItemKind: resources.ResourceDish,
+		Items: util.Transform(*dishes, func(i *stwbremen.Dish) interfaces.Resource {
 			d, err := resources.DishFromDTO(*i)
 			if err != nil {
-			return resources.Dish{}
+				return &resources.Dish{}
 			}
 
-		return *d
+			return d
-	}), nil
+		}),
+	}, nil
 
 }
 

core/interfaces/handler.go

@@ -19,7 +19,7 @@ type ResourceHandler interface {
 }
 
 type GetHandler interface {
-	Get(ctx context.Context, params params.Container) ([]any, error)
+	Get(ctx context.Context, params params.Container) (*ResourceList, error)
 }
 
 type Verb string

core/interfaces/output.go

@@ -1,7 +1,14 @@
 package interfaces
 
-import "io"
+import (
+	"io"
+)
 
 type Formatter interface {
-	Format(object []any) (io.Reader, error)
+	Format(object *ResourceList) (io.Reader, error)
+}
+
+type TableOutput interface {
+	ColumnNames() []string
+	Columns() []any
 }

core/interfaces/resource.go

@@ -0,0 +1,12 @@
+package interfaces
+
+type Resource interface {
+	Kind() string
+
+	Name() string
+}
+
+type ResourceList struct {
+	ItemKind string
+	Items    []Resource
+}

core/output/formatter.go

@@ -8,5 +8,8 @@ var Formatters = map[string]interfaces.Formatter{
 	"json":     &JsonFormatter{},
 	"yaml":     &YamlFormatter{},
 	"go":       &GoFormatter{},
-	"table": nil,
+	"table":    &TableFormatter{},
+	"csv":      &TableFormatter{HideSummary: true, RenderFormat: tableFormatCSV},
+	"html":     &TableFormatter{HideSummary: true, RenderFormat: tableFormatHTML},
+	"markdown": &TableFormatter{HideSummary: true, RenderFormat: tableFormatMarkdown},
 }

core/output/go.go

@@ -4,10 +4,12 @@ import (
 	"fmt"
 	"io"
 	"strings"
+
+	"git.bissendorf.co/bissendorf/unifood/m/v2/core/interfaces"
 )
 
 type GoFormatter struct{}
 
-func (f *GoFormatter) Format(objects []any) (io.Reader, error) {
+func (f *GoFormatter) Format(list *interfaces.ResourceList) (io.Reader, error) {
-	return strings.NewReader(fmt.Sprintf("%#v", objects)), nil
+	return strings.NewReader(fmt.Sprintf("%#v", list)), nil
 }

core/output/json.go

@@ -4,12 +4,14 @@ import (
 	"bytes"
 	"encoding/json"
 	"io"
+
+	"git.bissendorf.co/bissendorf/unifood/m/v2/core/interfaces"
 )
 
 type JsonFormatter struct{}
 
-func (f *JsonFormatter) Format(objects []any) (io.Reader, error) {
+func (f *JsonFormatter) Format(list *interfaces.ResourceList) (io.Reader, error) {
 	var buffer = make([]byte, 0, 1024)
 	outputBuffer := bytes.NewBuffer(buffer)
-	return outputBuffer, json.NewEncoder(outputBuffer).Encode(objects)
+	return outputBuffer, json.NewEncoder(outputBuffer).Encode(list)
 }

core/output/table.go

@@ -0,0 +1,81 @@
+package output
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+
+	"git.bissendorf.co/bissendorf/unifood/m/v2/core/interfaces"
+	"git.bissendorf.co/bissendorf/unifood/m/v2/util"
+	"github.com/jedib0t/go-pretty/table"
+)
+
+type tableRenderFormat string
+
+const (
+	tableFormatNormal   tableRenderFormat = "table"
+	tableFormatCSV      tableRenderFormat = "csv"
+	tableFormatHTML     tableRenderFormat = "html"
+	tableFormatMarkdown tableRenderFormat = "markdown"
+)
+
+type TableFormatter struct {
+	HideSummary  bool
+	RenderFormat tableRenderFormat
+}
+
+func (f *TableFormatter) Format(list *interfaces.ResourceList) (io.Reader, error) {
+
+	var buffer = make([]byte, 0, 1024)
+	outputBuffer := bytes.NewBuffer(buffer)
+
+	if !f.HideSummary {
+		outputBuffer.WriteString(
+			fmt.Sprintf("Resource: %s\r\nCount: %v\r\n\r\n", list.ItemKind, len(list.Items)),
+		)
+	}
+
+	if len(list.Items) <= 0 {
+		return outputBuffer, nil
+	}
+
+	// Setup table
+	t := table.NewWriter()
+	t.SetOutputMirror(outputBuffer)
+	t.SetStyle(table.StyleLight)
+
+	// Write header
+	tableFormat, ok := list.Items[0].(interfaces.TableOutput)
+	headerRow := []any{"Name"}
+	if ok {
+		columnHeaders := util.Transform(tableFormat.ColumnNames(), func(i *string) any { return *i })
+		headerRow = append(headerRow, columnHeaders...)
+	}
+	t.AppendHeader(headerRow)
+
+	// Write rows
+	for _, item := range list.Items {
+		rowOutput := []any{item.Name()}
+
+		itemFormatter, ok := item.(interfaces.TableOutput)
+		if ok {
+			rowOutput = append(rowOutput, itemFormatter.Columns()...)
+		}
+
+		t.AppendRow(rowOutput)
+	}
+
+	// Render
+	switch f.RenderFormat {
+	case tableFormatCSV:
+		t.RenderCSV()
+	case tableFormatHTML:
+		t.RenderHTML()
+	case tableFormatMarkdown:
+		t.RenderMarkdown()
+	default:
+		t.Render()
+	}
+
+	return outputBuffer, nil
+}

core/output/yaml.go

@@ -4,13 +4,14 @@ import (
 	"bytes"
 	"io"
 
+	"git.bissendorf.co/bissendorf/unifood/m/v2/core/interfaces"
 	"github.com/goccy/go-yaml"
 )
 
 type YamlFormatter struct{}
 
-func (f *YamlFormatter) Format(objects []any) (io.Reader, error) {
+func (f *YamlFormatter) Format(list *interfaces.ResourceList) (io.Reader, error) {
-	buffer, err := yaml.Marshal(objects)
+	buffer, err := yaml.Marshal(list)
 	if err != nil {
 		return nil, err
 	}

go.mod

@@ -2,10 +2,24 @@ module git.bissendorf.co/bissendorf/unifood/m/v2
 
 go 1.24.0
 
-require github.com/spf13/cobra v1.9.1
+require (
+	github.com/goccy/go-yaml v1.18.0
+	github.com/jedib0t/go-pretty v4.3.0+incompatible
+	github.com/spf13/cobra v1.9.1
+)
 
 require (
-	github.com/goccy/go-yaml v1.18.0 // indirect
+	github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 // indirect
+	github.com/go-openapi/errors v0.22.0 // indirect
+	github.com/go-openapi/strfmt v0.23.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/mapstructure v1.5.0 // indirect
+	github.com/oklog/ulid v1.3.1 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
 	github.com/spf13/pflag v1.0.7 // indirect
+	github.com/stretchr/testify v1.10.0 // indirect
+	go.mongodb.org/mongo-driver v1.14.0 // indirect
+	golang.org/x/sys v0.30.0 // indirect
 )

go.sum

@@ -1,13 +1,45 @@
+github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2 h1:DklsrG3dyBCFEj5IhUbnKptjxatkF07cF2ak3yi77so=
+github.com/asaskevich/govalidator v0.0.0-20230301143203-a9d515a09cc2/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
 github.com/cpuguy83/go-md2man/v2 v2.0.6/go.mod h1:oOW0eioCTA6cOiMLiUPZOpcVxMig6NIQQ7OS05n1F4g=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-openapi/errors v0.22.0 h1:c4xY/OLxUBSTiepAg3j/MHuAv5mJhnf53LLMWFB+u/w=
+github.com/go-openapi/errors v0.22.0/go.mod h1:J3DmZScxCDufmIMsdOuDHxJbdOGC0xtUynjIx092vXE=
+github.com/go-openapi/strfmt v0.23.0 h1:nlUS6BCqcnAk0pyhi9Y+kdDVZdZMHfEKQiS4HaMgO/c=
+github.com/go-openapi/strfmt v0.23.0/go.mod h1:NrtIpfKtWIygRkKVsxh7XQMDQW5HKQl6S5ik2elW+K4=
 github.com/goccy/go-yaml v1.18.0 h1:8W7wMFS12Pcas7KU+VVkaiCng+kG8QiFeFwzFb+rwuw=
 github.com/goccy/go-yaml v1.18.0/go.mod h1:XBurs7gK8ATbW4ZPGKgcbrY1Br56PdM69F7LkFRi1kA=
+github.com/google/go-cmp v0.5.2 h1:X2ev0eStA3AbceY54o37/0PQ/UWqKEiiO2dKL5OPaFM=
+github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+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/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
+github.com/jedib0t/go-pretty v4.3.0+incompatible h1:CGs8AVhEKg/n9YbUenWmNStRW2PHJzaeDodcfvRAbIo=
+github.com/jedib0t/go-pretty v4.3.0+incompatible/go.mod h1:XemHduiw8R651AF9Pt4FwCTKeG3oo7hrHJAoznj9nag=
+github.com/mattn/go-runewidth v0.0.16 h1:E5ScNMtiwvlvB5paMFdw9p4kSQzbXFikJ5SQO6TULQc=
+github.com/mattn/go-runewidth v0.0.16/go.mod h1:Jdepj2loyihRzMpdS35Xk/zdY8IAYHsh153qUoGf23w=
+github.com/mitchellh/mapstructure v1.5.0 h1:jeMsZIYE/09sWLaz43PL7Gy6RuMjD2eJVyuac5Z2hdY=
+github.com/mitchellh/mapstructure v1.5.0/go.mod h1:bFUtVrKA4DC2yAKiSyO/QUcy7e+RRV2QTWOzhPopBRo=
+github.com/oklog/ulid v1.3.1 h1:EGfNDEx6MqHz8B3uNV6QAib1UR2Lm97sHi3ocA6ESJ4=
+github.com/oklog/ulid v1.3.1/go.mod h1:CirwcVhetQ6Lv90oh/F+FBtV6XMibvdAFo93nm5qn4U=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rivo/uniseg v0.2.0/go.mod h1:J6wj4VEh+S6ZtnVlnTBMWIodfgj8LQOQFoIToxlJtxc=
+github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
+github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/spf13/cobra v1.9.1 h1:CXSaggrXdbHK9CF+8ywj8Amf7PBRmPCOJugH954Nnlo=
 github.com/spf13/cobra v1.9.1/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wxYW0=
 github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/pflag v1.0.7 h1:vN6T9TfwStFPFM5XzjsvmzZkLuaLX+HS+0SeFLRgU6M=
 github.com/spf13/pflag v1.0.7/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
+github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+go.mongodb.org/mongo-driver v1.14.0 h1:P98w8egYRjYe3XDjxhYJagTokP/H6HzlsnojRgZRd80=
+go.mongodb.org/mongo-driver v1.14.0/go.mod h1:Vzb0Mk/pa7e6cWw85R4F/endUC3u0U9jGcNU603k65c=
+golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=
+golang.org/x/sys v0.30.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

model/resources/dish.go

@@ -18,18 +18,16 @@ func DishFromDTO(dish stwbremen.Dish) (*Dish, error) {
 
 	return &Dish{
 		Title:    dish.Title,
+		Location: dish.Location,
 		Date:     date,
 		Tags:     strings.Split(strings.Replace(dish.Tags, " ", "", -1), ","),
 		Counter:  dish.Counter,
-		Prices: util.Transform(dish.Prices, func(i *stwbremen.Price) price {
+		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 price{
+			return i.Label, float32(p)
-				Label: i.Label,
-				Price: float32(p),
-			}
 		}),
 		Ingredients: util.Select(util.Transform(dish.Ingredients, func(i *stwbremen.Ingredient) ingredient {
 			return ingredient{
@@ -40,10 +38,13 @@ func DishFromDTO(dish stwbremen.Dish) (*Dish, error) {
 	}, nil
 }
 
+const ResourceDish = "dish"
+
 type Dish struct {
 	Title       string
+	Location    string
 	Ingredients []ingredient
-	Prices      []price
+	Prices      map[string]float32
 	Date        time.Time
 	Counter     string
 	Tags        []string
@@ -54,7 +55,10 @@ type ingredient struct {
 	Additionals []string
 }
 
-type price struct {
+func (d *Dish) Kind() string { return ResourceDish }
-	Label string
+func (d *Dish) Name() string { return d.Title }
-	Price float32
+
+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"]}
 }

util/slices.go

@@ -21,3 +21,13 @@ func Select[T any](s []T, selectFn func(i *T) bool) (out []T) {
 
 	return
 }
+
+func Map[T any, Tkey comparable, Tval any](s []T, transformFn func(i *T) (Tkey, Tval)) (out map[Tkey]Tval) {
+	out = make(map[Tkey]Tval)
+	for _, i := range s {
+		key, val := transformFn(&i)
+		out[key] = val
+	}
+
+	return
+}