package cmd

import (
	"fmt"
	"strings"

	"git.dayanhub.com/sagi/envoid/internal/datastore"
	"git.dayanhub.com/sagi/envoid/internal/errors"
	"github.com/spf13/cobra"
)

type envCmdFlags struct {
	rmEnvName   *string
	addEnvName  *string
	baseEnvName *string
}

var envFlags = &envCmdFlags{}

var envCmd = &cobra.Command{
	Use:   "env",
	Short: "manage environments",
	Long:  "",
}

var rmEnvCmd = &cobra.Command{
	Use:   "rm",
	Short: "removes an environment",
	Long:  "",
	RunE: func(cmd *cobra.Command, args []string) error {
		if err := initProject(); err != nil {
			return err
		}

		ds, err := datastore.NewDataStore()
		if err != nil {
			return err
		}
		defer ds.Close()

		err = ds.RemoveEnv(*envFlags.rmEnvName)
		if err != nil {
			return err
		}

		project.RemoveEnv(*envFlags.rmEnvName)
		configuration.Save()

		return nil
	},
}

var addEnvCmd = &cobra.Command{
	Use:   "add",
	Short: "adds an environment",
	Long:  "",
	RunE: func(cmd *cobra.Command, args []string) error {
		if err := initProject(); err != nil {
			return err
		}

		if len(strings.TrimSpace(*envFlags.addEnvName)) == 0 {
			return errors.NewInvalidFlagValueError("environment", *envFlags.addEnvName)
		}

		if _, err := project.GetEnv(*envFlags.addEnvName); err == nil {
			return errors.NewEnvironmentExistsError(*envFlags.addEnvName)
		}

		ds, err := datastore.NewDataStore()
		if err != nil {
			return err
		}
		defer ds.Close()

		if len(*envFlags.baseEnvName) != 0 {
			_, err = project.GetEnv(*envFlags.baseEnvName)
			if err != nil {
				return err
			}
			err = ds.CreateEnvOffExsisting(*envFlags.addEnvName, *envFlags.baseEnvName)
			if err != nil {
				return err
			}
		} else {
			err = ds.CreateEnv(*envFlags.addEnvName)
			if err != nil {
				return err
			}
		}

		err = project.NewEnv(*envFlags.addEnvName)
		if err != nil {
			return err
		}
		configuration.Save()

		return nil
	},
}

var lsEnvCmd = &cobra.Command{
	Use:   "ls",
	Short: "list all environments in this project",
	Long:  "",
	RunE: func(cmd *cobra.Command, args []string) error {
		if err := initProject(); err != nil {
			return err
		}

		if project.IsEmpty() {
			return errors.NewProjectEmptyError(project.Name)
		}

		for _, env := range project.Environments {
			fmt.Printf("%s\n", env.Name)
		}

		return nil
	},
}

func init() {
	// add
	envFlags.addEnvName = addEnvCmd.Flags().StringP("environment", "e", "", "environment name")

	err := addEnvCmd.MarkFlagRequired("environment")
	if err != nil {
		panic(err)
	}

	envFlags.baseEnvName = addEnvCmd.Flags().StringP("base-environment",
		"b", "", "base environment name (copy data from base)")

	err = addEnvCmd.RegisterFlagCompletionFunc("base-environment", validEnvironmentNamesComplete)
	if err != nil {
		panic(err)
	}
	// rm
	envFlags.rmEnvName = rmEnvCmd.Flags().StringP("environment", "e", "", "environment name")

	err = rmEnvCmd.MarkFlagRequired("environment")
	if err != nil {
		panic(err)
	}

	err = rmEnvCmd.RegisterFlagCompletionFunc("environment", validEnvironmentNamesComplete)
	if err != nil {
		panic(err)
	}
	// ls
	envCmd.AddCommand(addEnvCmd)
	envCmd.AddCommand(rmEnvCmd)
	envCmd.AddCommand(lsEnvCmd)
}