package main

import (
	"bytes"
	"log"
	"os"
	"path/filepath"
	"strings"
	"testing"

	//	"go.uber.org/mock/gomock"
	"src.opensuse.org/autogits/common"
	// "src.opensuse.org/autogits/common/mock"
)

func TestProjectBranchName(t *testing.T) {
	common.SetTestLogger(t)
	branchName := prGitBranchNameForPR("testingRepo", 10)
	if branchName != "PR_testingRepo#10" {
		t.Error("Unexpected branch name:", branchName)
	}
}

func TestUpdatePrBranch(t *testing.T) {
	common.SetTestLogger(t)
	var buf bytes.Buffer
	origLogger := log.Writer()
	log.SetOutput(&buf)
	defer log.SetOutput(origLogger)

	req := &common.PullRequestWebhookEvent{
		Repository: &common.Repository{
			Name: "testRepo",
		},
		Pull_Request: &common.PullRequest{},
	}

	git := &common.GitHandlerImpl{
		GitCommiter: "TestCommiter",
		GitEmail:    "test@testing",
		GitPath:     t.TempDir(),
	}

	setupGitForTests(t, git)
	gitExecs(t, git, [][]string{{"", "clone", "prj", common.DefaultGitPrj}})

	revs := strings.Split(git.GitExecWithOutputOrPanic("foo", "rev-list", "HEAD"), "\n")
	req.Pull_Request.Base.Sha = strings.TrimSpace(revs[1])
	req.Pull_Request.Head.Sha = strings.TrimSpace(revs[0])

	updateSubmoduleInPR("testRepo", revs[0], git)
	common.PanicOnError(git.GitExec(common.DefaultGitPrj, "commit", "-a", "-m", "created commit"))
	common.PanicOnError(git.GitExec(common.DefaultGitPrj, "push", "origin", "+HEAD:+testing"))
	git.GitExecOrPanic("prj", "reset", "--hard", "testing")
	rev := strings.TrimSpace(git.GitExecWithOutputOrPanic(filepath.Join(common.DefaultGitPrj, "testRepo"), "rev-list", "-1", "HEAD"))
	if rev != req.Pull_Request.Head.Sha {
		t.Error("prj/testRepo not updated to", req.Pull_Request.Head.Sha, "but is at", rev)
		t.Error(buf.String())
	}
}

func TestCreatePrBranch(t *testing.T) {
	common.SetTestLogger(t)
	var buf bytes.Buffer
	origLogger := log.Writer()
	log.SetOutput(&buf)
	defer log.SetOutput(origLogger)

	req := &common.PullRequestWebhookEvent{
		Repository: &common.Repository{
			Name: "testRepo",
		},
		Pull_Request: &common.PullRequest{},
	}

	git := &common.GitHandlerImpl{
		GitCommiter: "TestCommiter",
		GitEmail:    "test@testing",
		GitPath:     t.TempDir(),
	}

	setupGitForTests(t, git)
	gitExecs(t, git, [][]string{{"", "clone", "prj", common.DefaultGitPrj}})

	revs := strings.Split(git.GitExecWithOutputOrPanic("foo", "rev-list", "HEAD"), "\n")
	req.Pull_Request.Base.Sha = strings.TrimSpace(revs[1])
	req.Pull_Request.Head.Sha = strings.TrimSpace(revs[0])

	updateSubmoduleInPR("testRepo", revs[0], git)
	common.PanicOnError(git.GitExec(common.DefaultGitPrj, "commit", "-a", "-m", "created commit"))
	common.PanicOnError(git.GitExec(common.DefaultGitPrj, "push", "origin", "+HEAD:testingCreated"))

	rev := strings.TrimSpace(git.GitExecWithOutputOrPanic(filepath.Join(common.DefaultGitPrj, "testRepo"), "rev-list", "-1", "HEAD"))
	if rev != req.Pull_Request.Head.Sha {
		t.Error("prj/testRepo not updated to", req.Pull_Request.Head.Sha, "but is at", rev)
		t.Error(buf.String())
	}

	os.CopyFS("/tmp/test", os.DirFS(git.GitPath))
	git.GitExecOrPanic("prj", "reset", "--hard", "testingCreated")
	rev = strings.TrimSpace(git.GitExecWithOutputOrPanic("prj", "submodule", "status", "testRepo"))[1 : len(req.Pull_Request.Head.Sha)+1]
	if rev != req.Pull_Request.Head.Sha {
		t.Error("prj/testRepo not updated to", req.Pull_Request.Head.Sha, "but is at", rev)
		t.Error(buf.String())
	}
}