package gitea_test

import (
	"errors"
	"testing"

	giteasdk "code.gitea.io/sdk/gitea"
	"github.com/golangci/golangci-lint/pkg/report"
	"github.com/golangci/golangci-lint/pkg/result"
	"github.com/stretchr/testify/mock"

	"code.icb4dc0.de/prskr/nitter/internal/logging"
	"code.icb4dc0.de/prskr/nitter/nitters/gitea"
	"code.icb4dc0.de/prskr/nitter/nitters/gitea/mocks"
)

func Test_PRNitter_Report_MockCreatorError_Error(t *testing.T) {
	t.Parallel()
	expectedError := errors.New("error")
	client := mocks.NewClient(t)
	client.
		EXPECT().
		CreatePullReview(mock.Anything, mock.Anything, mock.Anything, mock.Anything).
		Return(nil, nil, expectedError).
		Times(1)

	client.
		EXPECT().
		GetMyUserInfo().
		Return(&giteasdk.User{ID: 11}, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetPullRequest(mock.Anything, mock.Anything, mock.Anything).
		Return(&giteasdk.PullRequest{Poster: &giteasdk.User{}}, nil, nil)

	client.
		EXPECT().
		ListPullReviews(mock.Anything, mock.Anything, mock.Anything, mock.Anything).
		Return(nil, nil, nil).
		Times(1)

	p := gitea.NewPRNitter(logging.NewLogger(t), client, new(gitea.GiteaPRConfig))

	if err := p.Report(new(report.Data), nil); err == nil {
		t.Error("expected error bot got none")
	} else if !errors.Is(err, expectedError) {
		t.Errorf("Error %v was not expected", err)
	}
}

func Test_PRNitter_RequestChangesIfIssues_ReviewStateRequestChanges(t *testing.T) {
	t.Parallel()

	client := mocks.NewClient(t)
	client.
		EXPECT().
		CreatePullReview(mock.Anything, mock.Anything, mock.Anything, expectReviewState(giteasdk.ReviewStateRequestChanges)).
		Return(nil, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetMyUserInfo().
		Return(&giteasdk.User{ID: 11}, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetPullRequest(mock.Anything, mock.Anything, mock.Anything).
		Return(&giteasdk.PullRequest{Poster: &giteasdk.User{ID: 42}}, nil, nil)

	client.
		EXPECT().
		ListPullReviews(mock.Anything, mock.Anything, mock.Anything, mock.Anything).
		Return(nil, nil, nil).
		Times(1)

	p := gitea.NewPRNitter(logging.NewLogger(t), client, &gitea.GiteaPRConfig{ReviewState: giteasdk.ReviewStateRequestChanges})

	if err := p.Report(new(report.Data), make([]result.Issue, 1)); err != nil {
		t.Errorf("Did not expect error but got %v", err)
	}
}

func Test_PRNitter_ApproveOthersPR_ReviewStateApproved(t *testing.T) {
	t.Parallel()

	client := mocks.NewClient(t)
	client.
		EXPECT().
		CreatePullReview(mock.Anything, mock.Anything, mock.Anything, expectReviewState(giteasdk.ReviewStateApproved)).
		Return(nil, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetMyUserInfo().
		Return(&giteasdk.User{ID: 11}, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetPullRequest(mock.Anything, mock.Anything, mock.Anything).
		Return(&giteasdk.PullRequest{Poster: &giteasdk.User{ID: 42}}, nil, nil)

	client.
		EXPECT().
		ListPullReviews(mock.Anything, mock.Anything, mock.Anything, mock.Anything).
		Return(nil, nil, nil).
		Times(1)

	p := gitea.NewPRNitter(logging.NewLogger(t), client, new(gitea.GiteaPRConfig))

	if err := p.Report(new(report.Data), nil); err != nil {
		t.Errorf("Did not expect error but got %v", err)
	}
}

func Test_PRNitter_DontApproveMyOwnPR_ReviewStateComment(t *testing.T) {
	t.Parallel()

	client := mocks.NewClient(t)
	client.
		EXPECT().
		CreatePullReview(mock.Anything, mock.Anything, mock.Anything, expectReviewState(giteasdk.ReviewStateComment)).
		Return(nil, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetMyUserInfo().
		Return(&giteasdk.User{ID: 11}, nil, nil).
		Times(1)

	client.
		EXPECT().
		GetPullRequest(mock.Anything, mock.Anything, mock.Anything).
		Return(&giteasdk.PullRequest{Poster: &giteasdk.User{ID: 11}}, nil, nil)

	client.
		EXPECT().
		ListPullReviews(mock.Anything, mock.Anything, mock.Anything, mock.Anything).
		Return(nil, nil, nil).
		Times(1)

	p := gitea.NewPRNitter(logging.NewLogger(t), client, new(gitea.GiteaPRConfig))

	if err := p.Report(new(report.Data), nil); err != nil {
		t.Errorf("Did not expect error but got %v", err)
	}
}

func match[T any](matcher func(arg T) bool) any {
	return mock.MatchedBy(matcher)
}

func expectReviewState(expected giteasdk.ReviewStateType) any {
	return match[giteasdk.CreatePullReviewOptions](func(arg giteasdk.CreatePullReviewOptions) bool {
		return arg.State == expected
	})
}