package main

import (
	"encoding/base64"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"
	"time"

	"github.com/geplauder/lithium/controllers"

	"github.com/bxcodec/faker/v3"
	"github.com/geplauder/lithium/pipelines"
	"github.com/geplauder/lithium/settings"
	"github.com/geplauder/lithium/storage"
	"github.com/gorilla/mux"
	"github.com/spf13/afero"
	"github.com/stretchr/testify/assert"
)

func TestIndexRoute(t *testing.T) {
	data := pipelines.Pipeline{}
	err := faker.FakeData(&data)
	assert.Nil(t, err)

	t.Run("Index route returns valid response", func(t *testing.T) {
		request := httptest.NewRequest(http.MethodGet, "/", nil)
		responseRecorder := httptest.NewRecorder()

		controllers.IndexHandler([]pipelines.IPipeline{}, responseRecorder, request, "")

		assert.Equal(t, 200, responseRecorder.Code, "Response code should be 200")
		assert.NotNil(t, responseRecorder.Body, "Response should contain body")
	})

	t.Run("Index route returns valid amount of pipelines", func(t *testing.T) {
		request := httptest.NewRequest(http.MethodGet, "/", nil)
		responseRecorder := httptest.NewRecorder()

		controllers.IndexHandler([]pipelines.IPipeline{data}, responseRecorder, request, "")

		assert.Equal(t, 200, responseRecorder.Code, "Response code should be 200")

		var body = controllers.Metadata{}
		err = json.Unmarshal(responseRecorder.Body.Bytes(), &body)
		assert.Nil(t, err)
		assert.Equal(t, 1, len(body.Pipelines))
		assert.Equal(t, data.Slug, body.Pipelines[0])
	})
}

func TestEndpointRoute(t *testing.T) {
	data := pipelines.Pipeline{}
	err := faker.FakeData(&data)
	assert.Nil(t, err)

	t.Run("Registered pipelines are valid routes", func(t *testing.T) {
		router := mux.NewRouter()
		fs := storage.GetMemoryStorageProvider()
		appSettings, _ := settings.LoadSettings(afero.NewMemMapFs())

		RegisterRoutes(router, appSettings, []pipelines.IPipeline{data}, fs)

		request, _ := http.NewRequest("GET", "/pipelines/"+data.Slug, nil)
		responseRecorder := httptest.NewRecorder()

		router.ServeHTTP(responseRecorder, request)

		assert.Equal(t, 200, responseRecorder.Code)
		body, _ := json.Marshal(data)
		assert.JSONEq(t, string(body), responseRecorder.Body.String())
	})

	t.Run("Unregistered pipelines return 404", func(t *testing.T) {
		router := mux.NewRouter()

		request, _ := http.NewRequest("GET", "/pipelines/"+data.Slug, nil)
		responseRecorder := httptest.NewRecorder()

		router.ServeHTTP(responseRecorder, request)

		assert.Equal(t, 404, responseRecorder.Code)
	})
}

func TestUploadRoute(t *testing.T) {
	t.Run("Test uploads missing multipart boundary", func(t *testing.T) {
		router := mux.NewRouter()
		fs := storage.GetMemoryStorageProvider()
		appSettings, _ := settings.LoadSettings(afero.NewMemMapFs())

		RegisterRoutes(router, appSettings, []pipelines.IPipeline{pipelines.Pipeline{
			Name:           "",
			Slug:           "",
			Type:           0,
			RemoveMetadata: false,
			Steps:          []pipelines.Step{},
			Output: struct {
				Format  string `json:"format"`
				Quality int    `json:"quality"`
			}{"jpeg", 10},
		}}, fs)

		request, _ := http.NewRequest("POST", "/upload", nil)
		request.Header["Content-Type"] = []string{"multipart/form-data"}
		responseRecorder := httptest.NewRecorder()

		router.ServeHTTP(responseRecorder, request)

		assert.Equal(t, 0x1A6, responseRecorder.Code)
		str, _ := base64.StdEncoding.DecodeString("eyJlcnJvciI6Im5" +
			"vIG11bHRpcGFydCBib3VuZGFyeSBwYXJhbSBpbiBDb250ZW50LVR5cGUifQ==")
		assert.JSONEq(t, string(str), responseRecorder.Body.String())
	})

	t.Run("Test uploads missing multipart boundary", func(t *testing.T) {
		router := mux.NewRouter()
		fs := storage.GetMemoryStorageProvider()
		appSettings, _ := settings.LoadSettings(afero.NewMemMapFs())

		RegisterRoutes(router, appSettings, []pipelines.IPipeline{pipelines.Pipeline{
			Name:           "",
			Slug:           "",
			Type:           0,
			RemoveMetadata: false,
			Steps:          []pipelines.Step{},
			Output: struct {
				Format  string `json:"format"`
				Quality int    `json:"quality"`
			}{"jpeg", 10},
		}}, fs)

		request, _ := http.NewRequest("POST", "/upload", nil)
		request.Header["Content-Type"] = []string{"multipart/form-data", "boundary=X-INSOMNIA-BOUNDARY"}
		responseRecorder := httptest.NewRecorder()

		router.ServeHTTP(responseRecorder, request)

		assert.Equal(t, 0x1A6, responseRecorder.Code)
		str, _ := base64.StdEncoding.DecodeString("eyJlcnJvciI6Im5vIG11bHRpcGFydCBib3VuZGFyeSBwYXJhbSBpbiBDb250ZW50LVR5cGUifQ==")
		assert.JSONEq(t, string(str), responseRecorder.Body.String())
	})
}

func TestFilesRoute(t *testing.T) {
	data := pipelines.Pipeline{}
	err := faker.FakeData(&data)
	assert.Nil(t, err)

	t.Run("Files endpoint returns files", func(t *testing.T) {
		router := mux.NewRouter()
		fs := storage.GetMemoryStorageProvider()
		appSettings, _ := settings.LoadSettings(afero.NewMemMapFs())

		RegisterRoutes(router, appSettings, []pipelines.IPipeline{data}, fs)

		request, _ := http.NewRequest("GET", "/files", nil)
		responseRecorder := httptest.NewRecorder()

		router.ServeHTTP(responseRecorder, request)

		type responseBody struct {
			Files []struct {
				Bucket     string    `json:"bucket"`
				FileName   string    `json:"file_name"`
				Size       int       `json:"size"`
				ModifiedAt time.Time `json:"modified_at"`
			} `json:"files"`
		}

		var res responseBody

		assert.Equal(t, 200, responseRecorder.Code)
		err := json.Unmarshal(responseRecorder.Body.Bytes(), &res)
		assert.Nil(t, err)
	})
}