package apitest

import (
	"fmt"
	"net/http"
	"net/http/httptest"
	"strings"
	"testing"

	"git.artlef.fr/bibliomane/internal/testutils"
	"github.com/stretchr/testify/assert"
)

func TestPostCollectionChangePositionHandler_PositionOk(t *testing.T) {
	payload :=
		`{
			"itemId": 14,
			"position": 2
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusOK, status)
	_, collection := testGetCollection(t, collectionId, "10", "0")
	assert.Equal(t, uint(1), collection.Items[0].Position)
	assert.Equal(t, uint(2), collection.Items[1].Position)
	assert.Equal(t, uint(3), collection.Items[2].Position)
	assert.Equal(t, uint(4), collection.Items[3].Position)
}

func TestPostCollectionChangePositionHandler_ChangeOtherElement(t *testing.T) {
	payload :=
		`{
			"itemId": 17,
			"position": 3
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusOK, status)
	_, collection := testGetCollection(t, collectionId, "10", "0")
	assert.Equal(t, "Duo", collection.Items[3].Book.Title)
}

func TestPostCollectionChangePositionHandler_LastPosition(t *testing.T) {
	payload :=
		`{
			"itemId": 19,
			"position": 546
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusOK, status)
	_, collection := testGetCollection(t, collectionId, "10", "0")
	assert.Equal(t, "Recherches philosophiques", collection.Items[7].Book.Title)
	assert.Equal(t, "Le château", collection.Items[6].Book.Title)
	assert.Equal(t, uint(8), collection.Items[7].Position)
}

func TestPostCollectionChangePositionHandler_FirstPosition(t *testing.T) {
	payload :=
		`{
			"itemId": 16,
			"position": 1
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusOK, status)
	_, collection := testGetCollection(t, collectionId, "10", "0")
	assert.Equal(t, "Duo", collection.Items[0].Book.Title)
}

func TestPostCollectionChangePositionHandler_WrongPosition(t *testing.T) {
	payload :=
		`{
			"itemId": 9,
			"position": 0
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusBadRequest, status)
}

func TestPostCollectionChangePositionHandler_MissingPosition(t *testing.T) {
	payload :=
		`{
			"itemId": 9
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusBadRequest, status)
}

func TestPostCollectionChangePositionWrongCollection(t *testing.T) {
	payload :=
		`{
		  "itemId": 1,
			"position": 9
		}`
	collectionId := "5"
	status := testPostCollectionChangePositionHandler(collectionId, payload)
	assert.Equal(t, http.StatusInternalServerError, status)
}

func testPostCollectionChangePositionHandler(collectionId string, payload string) int {
	router := testutils.TestSetup()
	w := httptest.NewRecorder()

	token := testutils.ConnectDemoUser(router)
	req, _ := http.NewRequest("POST", "/ws/collection/"+collectionId+"/changeposition",
		strings.NewReader(payload))
	req.Header.Add("Authorization", fmt.Sprintf("Bearer %s", token))
	router.ServeHTTP(w, req)

	return w.Code
}