package main

import (
	"errors"
	"os"
	"os/exec"
	"path"
	"testing"

	"go.uber.org/mock/gomock"
	"src.opensuse.org/autogits/common"
	"src.opensuse.org/autogits/common/gitea-generated/models"
	mock_common "src.opensuse.org/autogits/common/mock"
)

func TestPR(t *testing.T) {
	cwd, _ := os.Getwd()
	cmd := exec.Command("/usr/bin/bash", path.Join(cwd, "test_repo_setup.sh"))
	cmd.Dir = t.TempDir()
	if out, err := cmd.CombinedOutput(); err != nil {
		t.Fatal(string(out))
	}

	baseConfig := common.AutogitConfig{
		Reviewers:      []string{"super1", "super2"},
		Branch:         "branch",
		Organization:   "test",
		GitProjectName: "barPrj",
	}

	type prdata struct {
		pr  *models.PullRequest
		err error
	}

	tests := []struct {
		name      string
		data      []prdata
		api_error string

		resLen int
		reviewed bool
	}{
		{
			name: "Error fetching ReviewSet if there are missing links",
			data: []prdata{
				{pr: &models.PullRequest{Body: "", Index: 42, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo", Owner: &models.User{UserName: "test"}}}}, err: errors.New("Missing PR")},
			},
		},

		{
			name: "Error fetching is missing links",
			data: []prdata{
				{pr: &models.PullRequest{Body: "", Index: 42, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo", Owner: &models.User{UserName: "test"}}}}},
			}, api_error: "missing links",
		},

		{
			name: "Review set is not consistent",
			data: []prdata{
				{pr: &models.PullRequest{Body: "PR: foo/barPrj#22", Index: 42, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo", Owner: &models.User{UserName: "test"}}}}},
				{pr: &models.PullRequest{Body: "", Index: 22, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "barPrj", Owner: &models.User{UserName: "foo"}}}}},
			},
			api_error: "missing links",
		},

		{
			name: "Review set is consistent: 1pkg",
			data: []prdata{
				{pr: &models.PullRequest{Body: "PR: foo/barPrj#22", Index: 42, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo", Owner: &models.User{UserName: "test"}}}}},
				{pr: &models.PullRequest{Body: "PR: test/repo#42", Index: 22, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "barPrj", Owner: &models.User{UserName: "foo"}}}}},
			},
			resLen: 2,
		},
		{
			name: "Review set is consistent: 2pkg",
			data: []prdata{
				{pr: &models.PullRequest{Body: "PR: foo/barPrj#22", Index: 42, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo", Owner: &models.User{UserName: "test"}}}}},
				{pr: &models.PullRequest{Body: "PR: test/repo#42\nPR: test/repo2#41", Index: 22, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "barPrj", Owner: &models.User{UserName: "foo"}}}}},
				{pr: &models.PullRequest{Body: "PR: foo/barPrj#22", Index: 41, Base: &models.PRBranchInfo{Repo: &models.Repository{Name: "repo2", Owner: &models.User{UserName: "test"}}}}},
			},
			resLen: 3,
		},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			ctl := gomock.NewController(t)
			mock := mock_common.NewMockGiteaPRFetcher(ctl)

			var test_err error
			for _, data := range test.data {
				mock.EXPECT().GetPullRequest(data.pr.Base.Repo.Owner.UserName, data.pr.Base.Repo.Name, data.pr.Index).Return(data.pr, data.err)
				if data.err != nil {
					test_err = data.err
				}
			}

			res, err := FetchReviewSet(mock, "test", "repo", 42, &baseConfig)
			if err == nil {
				if test_err != nil {
					t.Fatal("Expected", test_err, "but got", err)
				}
			} else {
				if test.api_error != "" {
					if err.Error() != test.api_error {
						t.Fatal("expected", test.api_error, "but got", err)
					}
				} else if test_err != err {
					t.Fatal("expected", test_err, "but got", err)
				}
				return
			}

			t.Log(res)

			if test.resLen != len(res.prs) {
				t.Error("expected result len", test.resLen, "but got", len(res.prs))
			}
/*
			if res.IsReviewed() != test.reviewed {
				t.Error("expected reviewed to be NOT", res.IsReviewed())
			}
			*/
		})
	}
}