// Copyright 2019 Drone.IO Inc. All rights reserved.
// Use of this source code is governed by the Drone Non-Commercial License
// that can be found in the LICENSE file.

// +build !oss

package crons

import (
	"bytes"
	"context"
	"encoding/json"
	"net/http"
	"net/http/httptest"
	"testing"

	"github.com/drone/drone/core"
	"github.com/drone/drone/handler/api/errors"
	"github.com/drone/drone/mock"

	"github.com/go-chi/chi"
	"github.com/golang/mock/gomock"
	"github.com/google/go-cmp/cmp"
	"github.com/google/go-cmp/cmp/cmpopts"
)

func TestHandleCreate(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(dummyCronRepo, nil)

	crons := mock.NewMockCronStore(controller)
	crons.EXPECT().Create(gomock.Any(), gomock.Any()).Return(nil)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")
	c.URLParams.Add("cron", "nightly")

	in := new(bytes.Buffer)
	json.NewEncoder(in).Encode(dummyCron)

	w := httptest.NewRecorder()
	r := httptest.NewRequest("POST", "/", in)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, crons)(w, r)
	if got, want := w.Code, http.StatusOK; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := &core.Cron{}, dummyCron
	json.NewDecoder(w.Body).Decode(got)

	ignore := cmpopts.IgnoreFields(core.Cron{}, "Next")
	if diff := cmp.Diff(got, want, ignore); len(diff) != 0 {
		t.Errorf(diff)
	}
	if got.Next == 0 {
		t.Errorf("Expect next execution date scheduled")
	}
}

func TestHandleCreate_ValidationError(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(dummyCronRepo, nil)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")

	in := new(bytes.Buffer)
	json.NewEncoder(in).Encode(&core.Cron{Name: "", Expr: "* * * * *"})

	w := httptest.NewRecorder()
	r := httptest.NewRequest("GET", "/", in)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, nil).ServeHTTP(w, r)
	if got, want := w.Code, http.StatusBadRequest; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := &errors.Error{}, &errors.Error{Message: "Invalid Cronjob Name"}
	json.NewDecoder(w.Body).Decode(got)
	if diff := cmp.Diff(got, want); len(diff) != 0 {
		t.Errorf(diff)
	}
}

func TestHandleCreate_BadExpression(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(dummyCronRepo, nil)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")

	in := new(bytes.Buffer)
	json.NewEncoder(in).Encode(&core.Cron{Name: "", Expr: "a b c d e"})

	w := httptest.NewRecorder()
	r := httptest.NewRequest("GET", "/", in)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, nil).ServeHTTP(w, r)
	if got, want := w.Code, http.StatusBadRequest; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := &errors.Error{}, &errors.Error{Message: "Invalid Cronjob Expression"}
	json.NewDecoder(w.Body).Decode(got)
	if diff := cmp.Diff(got, want); len(diff) != 0 {
		t.Errorf(diff)
	}
}

func TestHandleCreate_BadRequest(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(dummyCronRepo, nil)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")

	w := httptest.NewRecorder()
	r := httptest.NewRequest("GET", "/", nil)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, nil).ServeHTTP(w, r)
	if got, want := w.Code, http.StatusBadRequest; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := &errors.Error{}, &errors.Error{Message: "EOF"}
	json.NewDecoder(w.Body).Decode(got)
	if diff := cmp.Diff(got, want); len(diff) != 0 {
		t.Errorf(diff)
	}
}

func TestHandleCreate_RepoNotFound(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(nil, errors.ErrNotFound)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")

	w := httptest.NewRecorder()
	r := httptest.NewRequest("GET", "/", nil)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, nil).ServeHTTP(w, r)
	if got, want := w.Code, http.StatusNotFound; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := new(errors.Error), errors.ErrNotFound
	json.NewDecoder(w.Body).Decode(got)
	if diff := cmp.Diff(got, want); len(diff) != 0 {
		t.Errorf(diff)
	}
}

func TestHandleCreate_CreateError(t *testing.T) {
	controller := gomock.NewController(t)
	defer controller.Finish()

	repos := mock.NewMockRepositoryStore(controller)
	repos.EXPECT().FindName(gomock.Any(), dummyCronRepo.Namespace, dummyCronRepo.Name).Return(dummyCronRepo, nil)

	crons := mock.NewMockCronStore(controller)
	crons.EXPECT().Create(gomock.Any(), gomock.Any()).Return(errors.ErrNotFound)

	c := new(chi.Context)
	c.URLParams.Add("owner", "octocat")
	c.URLParams.Add("name", "hello-world")
	c.URLParams.Add("cron", "nightly")

	in := new(bytes.Buffer)
	json.NewEncoder(in).Encode(dummyCron)

	w := httptest.NewRecorder()
	r := httptest.NewRequest("GET", "/", in)
	r = r.WithContext(
		context.WithValue(context.Background(), chi.RouteCtxKey, c),
	)

	HandleCreate(repos, crons).ServeHTTP(w, r)
	if got, want := w.Code, http.StatusInternalServerError; want != got {
		t.Errorf("Want response code %d, got %d", want, got)
	}

	got, want := new(errors.Error), errors.ErrNotFound
	json.NewDecoder(w.Body).Decode(got)
	if diff := cmp.Diff(got, want); len(diff) != 0 {
		t.Errorf(diff)
	}
}