package app

import (
	"fmt"
	"os"
	"reflect"
	"testing"

	"gitlab.com/revalus/grm/commands"
	"gitlab.com/revalus/grm/config"
)

type FakeCommandToTest struct {
	triggerError   bool
	triggerChanged bool
}

func (fk FakeCommandToTest) Command(repoCfg config.RepositoryConfig, cmdStatus chan commands.CommandStatus) {
	status := commands.CommandStatus{
		Name:    repoCfg.Name,
		Changed: false,
		Message: "response from fake command",
		Error:   false,
	}

	if fk.triggerError {
		status.Error = true
	}
	if fk.triggerChanged {
		status.Changed = true
	}

	cmdStatus <- status
}

func prepareConfigContent() (string, string) {
	checkErrorDuringPreparation := func(err error) {
		if err != nil {
			fmt.Printf("Cannot prepare a temporary directory for testing! %v ", err.Error())
			os.Exit(2)
		}
	}

	baseTmp := fmt.Sprintf("%v/grmTest", os.TempDir())
	if _, ok := os.Stat(baseTmp); ok != nil {
		err := os.Mkdir(baseTmp, 0777)
		checkErrorDuringPreparation(err)
	}

	tempDir, err := os.MkdirTemp(baseTmp, "*")
	checkErrorDuringPreparation(err)

	configFilePath := fmt.Sprintf("%v/config-file.yaml", tempDir)

	file, err := os.Create(configFilePath)
	checkErrorDuringPreparation(err)

	defer file.Close()

	yamlConfig := fmt.Sprintf(`
workspace: %v
repositories:
  - src: "https://github.com/golang/example.git"
    tags: ['example']
`, tempDir)

	_, err = file.WriteString(yamlConfig)

	checkErrorDuringPreparation(err)
	return tempDir, configFilePath
}

func TestParseApplication(t *testing.T) {
	workdir, configFile := prepareConfigContent()
	t.Cleanup(func() {
		os.Remove(workdir)
	})

	args := []string{"custom-app", "sync", "-c", configFile}
	grm := GitRepositoryManager{}
	grm.Parse(args)

	if workdir != grm.configuration.Workspace {
		t.Errorf("Expected to get %v, instead of this got %v", workdir, grm.configuration.Repositories)
	}

	if !grm.cliArguments.Sync {
		t.Error("The value of \"sync\" is expected to be true")
	}

	expectedRepo := config.RepositoryConfig{
		Name: "example",
		Src:  "https://github.com/golang/example.git",
		Dest: "example",
		Tags: []string{"example"},
	}

	if !reflect.DeepEqual(expectedRepo, grm.configuration.Repositories[0]) {
		t.Errorf("Expected to get %v, instead of this got %v", expectedRepo, grm.configuration.Repositories[0])
	}
}

func Example_test_sync_output() {
	grm := GitRepositoryManager{
		configuration: config.Configuration{
			Workspace: "/tmp",
		},
		cliArguments: config.CliArguments{
			Sync:    true,
			Version: true,
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	grm.Run()
	// Output:
	// Info: Synchronizing repositories
	// Info: All repositories are synced
	// Info: Current version: 0.3.0
}

func Example_limit_test_tags() {
	grm := GitRepositoryManager{
		cliArguments: config.CliArguments{
			LimitTags: []string{"example"},
		},
		configuration: config.Configuration{
			Repositories: []config.RepositoryConfig{
				{Name: "example1", Tags: []string{"example"}},
				{Name: "example2", Tags: []string{"example"}},
				{Name: "notExample"},
			},
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	fakeCommand := FakeCommandToTest{
		triggerError:   false,
		triggerChanged: false,
	}
	grm.limitTags()
	grm.runCommand(fakeCommand)
	// Output:
	// Repository "example1": response from fake command
	// Repository "example2": response from fake command
}

func Example_limit_name() {
	grm := GitRepositoryManager{
		cliArguments: config.CliArguments{
			LimitName: "notExample",
		},
		configuration: config.Configuration{
			Repositories: []config.RepositoryConfig{
				{Name: "example1", Tags: []string{"example"}},
				{Name: "example2", Tags: []string{"example"}},
				{Name: "notExample"},
			},
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	fakeCommand := FakeCommandToTest{
		triggerError:   false,
		triggerChanged: false,
	}
	grm.limitName()
	grm.runCommand(fakeCommand)
	// Output:
	// Repository "notExample": response from fake command
}

func Example_run_with_limit_not_existing_name() {
	grm := GitRepositoryManager{
		cliArguments: config.CliArguments{
			LimitName: "not-existing-name",
		},
		configuration: config.Configuration{
			Repositories: []config.RepositoryConfig{
				{Name: "example1", Tags: []string{"example"}},
				{Name: "example2", Tags: []string{"example"}},
				{Name: "notExample"},
			},
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	grm.Run()
	// Output:
	// Error: no repository was found with the specified name
}

func Example_run_with_limit_not_existing_tags() {
	grm := GitRepositoryManager{
		cliArguments: config.CliArguments{
			LimitTags: []string{"not-existing-tag"},
		},
		configuration: config.Configuration{
			Repositories: []config.RepositoryConfig{
				{Name: "example1", Tags: []string{"example"}},
				{Name: "example2", Tags: []string{"example"}},
				{Name: "notExample"},
			},
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	grm.Run()
	// Output:
	// Error: no repository was found with the specified tags
}

func Example_test_status_output() {
	grm := GitRepositoryManager{
		configuration: config.Configuration{
			Workspace: "/tmp",
		},
		cliArguments: config.CliArguments{
			Status: true,
		},
		console: ConsoleOutput{
			Color: false,
		},
	}
	grm.Run()
	// Output:
	// Info: Current status of repositories
}