package handler_test

import (
	"io/ioutil"
	"net/http"
	"net/http/httptest"
	"testing"

	"git.netflux.io/rob/netflux-homepage/handler"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

func TestHandler(t *testing.T) {
	const (
		matrixHostname = "foo.example.com:443"
		matrixBaseURL  = "https://foo.example.com"
	)

	testCases := []struct {
		name            string
		method          string
		path            string
		wantContentType string
		wantStatusCode  int
		wantBody        string
	}{
		{
			name:            "GET /.well-known/matrix/server",
			method:          http.MethodGet,
			path:            "/.well-known/matrix/server",
			wantContentType: "application/json",
			wantStatusCode:  http.StatusOK,
			wantBody:        `{"m.server": "foo.example.com:443"}`,
		},
		{
			name:            "GET /.well-known/matrix/client",
			method:          http.MethodGet,
			path:            "/.well-known/matrix/client",
			wantContentType: "application/json",
			wantStatusCode:  http.StatusOK,
			wantBody:        `{"m.homeserver": {"base_url": "https://foo.example.com"}}`,
		},
		{
			name:            "GET /",
			method:          http.MethodGet,
			path:            "/",
			wantContentType: "text/html",
			wantStatusCode:  http.StatusOK,
			wantBody:        "Welcome to netflux.io",
		},
		{
			name:            "HEAD /",
			method:          http.MethodHead,
			path:            "/",
			wantContentType: "text/html",
			wantStatusCode:  http.StatusOK,
			wantBody:        "",
		},
		{
			name:           "page not found",
			method:         http.MethodGet,
			path:           "/foo",
			wantStatusCode: http.StatusNotFound,
			wantBody:       "404 page not found",
		},
		{
			name:           "wrong method",
			method:         http.MethodPost,
			path:           "/",
			wantStatusCode: http.StatusMethodNotAllowed,
			wantBody:       "405 method not allowed",
		},
	}

	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			req := httptest.NewRequest(tc.method, tc.path, nil)
			rec := httptest.NewRecorder()

			h := handler.New(matrixHostname, matrixBaseURL)
			h.ServeHTTP(rec, req)
			resp := rec.Result()
			defer resp.Body.Close()

			assert.Equal(t, tc.wantStatusCode, resp.StatusCode)

			if tc.wantContentType != "" {
				assert.Equal(t, tc.wantContentType, resp.Header.Get("content-type"))
			}

			respBody, err := ioutil.ReadAll(resp.Body)
			require.NoError(t, err)
			assert.Contains(t, string(respBody), tc.wantBody)
		})
	}
}