/*
Copyright © 2022 Matthieu Derasse <git@derasse.fr>
*/
package cmd

import (
	"os"
	"os/exec"
	"path/filepath"
	"strings"

	"github.com/juju/errors"
	"github.com/spf13/cobra"

	"git.home.m-and-m.ovh/mderasse/gouick/helpers"
	"git.home.m-and-m.ovh/mderasse/gouick/helpers/api_types"
	"git.home.m-and-m.ovh/mderasse/gouick/helpers/input"
	"git.home.m-and-m.ovh/mderasse/gouick/models"

	log "github.com/sirupsen/logrus"
)

// initCmd represents the init command.
var initCmd = &cobra.Command{
	Use:   "init",
	Short: "Initialize a new project",
	Long: `Initialize a new project by creating a new directory and:
	- Initialize a Git Repository
	- Create a Go-Swagger Struct
	- Add default routes
	- Generate the API.

That command is Interactive or can be control through args`,
	Run: runInitAction,
}

func init() {
	rootCmd.AddCommand(initCmd)
}

// runInitAction will init a project.
func runInitAction(cmd *cobra.Command, args []string) {
	log.Debugf("Starting command Init")

	log.Debugf("Checking dependencies")

	if !checkDependencies() {
		return
	}

	// Get current path
	currentPath, err := os.Getwd()
	if err != nil {
		log.Errorf("Fail to get current path. The following error happen: %s", err.Error())
		return
	}

	log.Debugf("Working in directory: %s", currentPath)

	// Check if we are in gouick directory
	log.Debug("Checking if we are in the same directory as Gouick")

	isGouickDir, err := helpers.IsGouickDirectory(currentPath)
	if err != nil {
		log.Errorf("Fail to check if we are in gouick directory. The following error happen: %s", err.Error())
		return
	}

	if isGouickDir {
		log.Error("You cannot initialize a new project in the same dir than gouick\nGouick should be added to your path")
		return
	}

	// Check if we are in a gouick project
	log.Debug("Checking if we are in a gouick project")

	isGouickProject, err := helpers.IsGouickProject(currentPath)
	if err != nil {
		log.Errorf("Fail to check if we are in a gouick project. The following error happen: %s", err.Error())
		return
	}

	if isGouickProject {
		log.Error("You cannot initialize a new project in an already gouick project")
		return
	}

	// let's start to work on project configuration
	config := &models.Config{}

	// ask which API type we want to use.
	possibleAPITypes := make([]string, 0)
	for _, apiType := range models.GetListOfAPITypeName() {
		possibleAPITypes = append(possibleAPITypes, string(apiType))
	}

	log.Infof("Which kind of API do you want to init (possible values: %s)", strings.Join(possibleAPITypes, ", "))
	apiTypeName := input.APITypeName(true)

	log.Debugf("Using api type : %s", string(apiTypeName))

	apiType, err := api_types.GetAPIType(apiTypeName)
	if err != nil {
		log.Error("Impossible to load that API Type generator")
		return
	}

	config.ProjectType = apiTypeName

	log.Debug("Check before init for the selected API type")

	err = apiType.CheckInitialize()
	if err != nil && !errors.Is(err, errors.NotImplemented) {
		log.Errorf("Impossible to initialize the project. The following error happen: %s", err.Error())
		return
	}

	// ask project directory
	log.Info("Name of the project directory:")
	projectDirectory := strings.ToLower(input.Alphanumerical(true))

	// ask project name
	log.Info("Name of the project:")
	config.ProjectName = input.AlphanumericalAndSpace(true)

	// ask project description
	log.Info("Description of the project:")
	config.ProjectDescription = input.String(true)

	// ask project contact
	config.ProjectContact = models.ProjectContactStruct{}

	log.Info("Name of the team:")
	config.ProjectContact.Name = input.String(true)

	log.Info("Mail address of the developer team:")
	config.ProjectContact.Email = input.Mail(true)

	log.Info("URL of the contact information of the team:")
	config.ProjectContact.URL = input.String(false)

	// launch GetInitializeUserInput from selected api type
	log.Debug("Get user input for the selected API type")

	config, err = apiType.GetInitializeUserInput(config)
	if err != nil && !errors.Is(err, errors.NotImplemented) {
		log.Errorf("Fail to get all the required input. The following error happen: %s", err.Error())
		return
	}

	projectDirPath := filepath.Join(currentPath, projectDirectory)

	log.Debugf("Our project directory path is: %s", projectDirPath)

	// create project directory
	log.Infof("Creating project directory")

	dirCreated, err := helpers.CheckAndCreateDir(projectDirPath)
	if err != nil {
		log.Errorf("Fail to create project directory. The following error happen: %s", err.Error())
		return
	}

	if !dirCreated {
		log.Error("A directory already exist with your project directory name")
		return
	}

	// Move to project directory.
	log.Infof("Moving to the project directory: %s", projectDirectory)

	err = os.Chdir(projectDirPath)
	if err != nil {
		log.Errorf("Fail to move to project directory. The following error happen: %s", err.Error())
		return
	}

	// Execute git init.
	log.Info("Initializing Git with main branch")

	gitinit := exec.Command("git", "init")
	_, err = gitinit.Output()
	if err != nil {
		log.Errorf("Fail to git init. The following error happen: %s", err.Error())
		return
	}

	gitcheckout := exec.Command("git", "checkout", "-b", "main")
	_, err = gitcheckout.Output()
	if err != nil {
		log.Errorf("Fail to git checkout -b main. The following error happen: %s", err.Error())
		return
	}

	log.Info("Creating gouick configuration file")
	err = helpers.WriteConfig(projectDirPath, config)
	if err != nil {
		log.Errorf("Fail to write configuration. The following error happen: %s", err.Error())
		return
	}

	// Create API Skeleton
	log.Info("Creating API skeleton")
	err = apiType.CreateProjectSkeleton(projectDirPath, config)
	if err != nil {
		log.Errorf("Fail to create the project skeleton. The following error happen: %s", err.Error())
		return
	}

	// Generate Makefile
	log.Info("Generating Makefile")
	err = apiType.GenerateMakefile(projectDirPath, config)
	if err != nil {
		log.Errorf("Fail to generate Makefile. The following error happen: %s", err.Error())
		return
	}

	// Generate Readme
	log.Info("Generating Readme")
	err = apiType.GenerateReadme(projectDirPath, config)
	if err != nil {
		log.Errorf("Fail to generate Readme.md. The following error happen: %s", err.Error())
		return
	}

	// Generate Launcher
	log.Info("Generating Launcher")
	err = apiType.GenerateLauncher(projectDirPath, config)
	if err != nil {
		log.Errorf("Fail to generate launcher.sh. The following error happen: %s", err.Error())
		return
	}
}