package meta_test

import (
	"bytes"
	"encoding/hex"
	"testing"

	"git.bit5.ru/backend/meta/v5"
	"github.com/stretchr/testify/require"
)

func TestAssocMsgpackReader(t *testing.T) {
	t.Run("reading parent", func(t *testing.T) {
		// {"f1":"blabla","f3":[2,4,6],"f2":{"field":1},"f4":[{"field":10},{"field":1024}],"f5":null}
		src := "85A26631A6626C61626C61A2663393020406A2663281A56669656C6401A266349281A56669656C640A81A56669656C64CD0400A26635C0"

		expected := TestParent{
			Field1: "blabla",
			Field2: TestFoo{
				Field: 1,
			},
			Field3: []int8{2, 4, 6},
			Field4: []TestFoo{
				{Field: 10},
				{Field: 1024},
			},
		}

		data, err := hex.DecodeString(src)
		require.NoError(t, err)

		rdr := meta.NewMsgpackAssocReader(bytes.NewReader(data))

		var actual TestParent
		readErr := actual.Read(rdr)
		require.NoError(t, readErr)
		require.EqualValues(t, expected, actual)
	})

	t.Run("reading child", func(t *testing.T) {
		// {"f":"qwerty","f1":"blabla","f3":[2,4,6],"f2":{"field":1},"f4":[{"field":10},{"field":1024}]}
		src := "85A166A6717765727479A26631A6626C61626C61A2663393020406A2663281A56669656C6401A266349281A56669656C640A81A56669656C64CD0400"

		expected := TestChild{
			Field: "qwerty",
			TestParent: TestParent{
				Field1: "blabla",
				Field2: TestFoo{
					Field: 1,
				},
				Field3: []int8{2, 4, 6},
				Field4: []TestFoo{
					{Field: 10},
					{Field: 1024},
				},
			},
		}

		data, err := hex.DecodeString(src)
		require.NoError(t, err)

		rdr := meta.NewMsgpackAssocReader(bytes.NewReader(data))

		var actual TestChild
		readErr := actual.Read(rdr)
		require.NoError(t, readErr)
		require.EqualValues(t, expected, actual)
	})

	t.Run("fail reading parent as array", func(t *testing.T) {
		// ["blabla",[1],[2,4,6],[[10],[1024]],null]
		src := "95A6626C61626C6191019302040692910A91CD0400C0"

		expected := TestParent{}

		data, err := hex.DecodeString(src)
		require.NoError(t, err)

		rdr := meta.NewMsgpackAssocReader(bytes.NewReader(data))

		var actual TestParent
		readErr := actual.Read(rdr)
		require.ErrorContains(t, readErr, "field `` is not a map")
		require.EqualValues(t, expected, actual)
	})

	t.Run("fail reading parent as array with maps", func(t *testing.T) {
		// ["blabla",{"field":1},[2,4,6],[{"field":10},{"field":1024}],null]
		src := "95A6626C61626C6181A56669656C6401930204069281A56669656C640A81A56669656C64CD0400C0"

		expected := TestParent{}

		data, err := hex.DecodeString(src)
		require.NoError(t, err)

		rdr := meta.NewMsgpackAssocReader(bytes.NewReader(data))

		var actual TestParent
		readErr := actual.Read(rdr)
		require.ErrorContains(t, readErr, "field `` is not a map")
		require.EqualValues(t, expected, actual)
	})

	t.Run("fail reading child as array", func(t *testing.T) {
		// ["blabla",[1],[2,4,6],[[10],[1024]],null,"qwerty"]
		src := "96A6626C61626C6191019302040692910A91CD0400C0A6717765727479"

		expected := TestChild{}

		data, err := hex.DecodeString(src)
		require.NoError(t, err)

		rdr := meta.NewMsgpackAssocReader(bytes.NewReader(data))

		var actual TestChild
		readErr := actual.Read(rdr)
		require.ErrorContains(t, readErr, "field `` is not a map")
		require.EqualValues(t, expected, actual)
	})
}