package cmd

import (
	"envy/cmd/utils"
	"errors"
	"fmt"
	"os"
	"path"

	"github.com/charmbracelet/huh"
	"github.com/charmbracelet/lipgloss"
	"github.com/spf13/cobra"
)

// deleteCmd represents the delete command
var deleteCmd = &cobra.Command{
	Use:   "delete [environment]",
	Short: "Delete an environment or the project",
	Run: func(cmd *cobra.Command, args []string) {
		isProject, err := cmd.Flags().GetBool("project")
		utils.StopIfErr(err)

		env := ""
		if len(args) > 0 {
			env = args[0]
		}

		envy, err := utils.GetEnvy()
		utils.StopIfErr(err)

		project, _ := utils.GetKey(envy, "envy.project")
		pinned, _ := utils.GetKey(envy, "envy.env")
		current, _ := utils.GetKey(envy, "envy.current")

		dbProject, err := utils.GetProject(project)
		utils.StopIfErr(err)

		dbEnvs, err := utils.GetEnvironments(dbProject.ID)
		utils.StopIfErr(err)

		if isProject || len(dbEnvs) == 1 {
			var name string
			var confirm bool
			style := lipgloss.NewStyle().Foreground(lipgloss.Color("#0FF"))
			form := huh.NewForm(
				huh.NewGroup(
					huh.NewInput().
						Title("Delete Project").
						Description("Enter \""+style.Render(project)+"\" to proceed").
						Validate(func(s string) error {
							if s != project {
								return errors.New("wrong project name entered")
							}
							return nil
						}).
						Value(&name),

					huh.NewConfirm().
						Title("Are you sure that you want to delete this project?").
						Description("All the environments, except the current one, will be permanently deleted").
						Value(&confirm),
				),
			)

			err = form.Run()
			utils.StopIfErr(err)

			if confirm {
				utils.DB.Delete(&dbEnvs)
				utils.DB.Delete(&dbProject)

				cwd, err := os.Getwd()
				utils.StopIfErr(err)
				err = os.Remove(path.Join(cwd, "envy.toml"))
				utils.StopIfErr(err)

				fmt.Printf("Deleted project %v and its environments.\n", project)
			}
		} else {
			dbEnv := &utils.Environment{}

			if env == "" {
				form := huh.NewForm(
					huh.NewGroup(
						huh.NewSelect[*utils.Environment]().
							Title("Delete environment").
							Description("Select environment to delete").
							OptionsFunc(func() []huh.Option[*utils.Environment] {
								var opts []huh.Option[*utils.Environment]
								for _, en := range dbEnvs {
									opts = append(opts, huh.NewOption(en.Name, &en))
								}
								return opts
							}, &dbEnvs).
							Validate(func(e *utils.Environment) error {
								if e.Name == current {
									return errors.New("cannot delete current environment")
								}
								return nil
							}).
							Value(&dbEnv),
					),
				)

				err = form.Run()
				utils.StopIfErr(err)
			} else {
				for _, en := range dbEnvs {
					if en.Name == env {
						dbEnv = &en
					}
				}
			}

			switch dbEnv.Name {
			case pinned:
				envy.Set("envy.env", current)
				data, err := envy.Marshal()
				utils.StopIfErr(err)
				cwd, err := os.Getwd()
				utils.StopIfErr(err)
				err = os.WriteFile(path.Join(cwd, "envy.toml"), data, 0755)
				utils.StopIfErr(err)
			case current:
				utils.ErrPrint("Cannot delete current environment.")
				os.Exit(1)
			}
			utils.DB.Delete(&dbEnv)
			fmt.Printf("Deleted environment %v from project %v.\n", dbEnv.Name, project)
		}
	},
}

func init() {
	rootCmd.AddCommand(deleteCmd)

	deleteCmd.Flags().BoolP("project", "p", false, "Delete the entire project")
}