package controller

import (
	"context"
	"runtime"

	"github.com/kandev/kandev/internal/user/dto"
	"github.com/kandev/kandev/internal/user/service"
)

type Controller struct {
	svc *service.Service
}

func NewController(svc *service.Service) *Controller {
	return &Controller{svc: svc}
}

func (c *Controller) GetCurrentUser(ctx context.Context) (dto.UserResponse, error) {
	user, err := c.svc.GetCurrentUser(ctx)
	if err != nil {
		return dto.UserResponse{}, err
	}
	settings, err := c.svc.GetUserSettings(ctx)
	if err != nil {
		return dto.UserResponse{}, err
	}
	return dto.UserResponse{
		User:     dto.FromUser(user),
		Settings: dto.FromUserSettings(settings),
	}, nil
}

func (c *Controller) GetUserSettings(ctx context.Context) (dto.UserSettingsResponse, error) {
	settings, err := c.svc.GetUserSettings(ctx)
	if err != nil {
		return dto.UserSettingsResponse{}, err
	}
	return dto.UserSettingsResponse{
		Settings:     dto.FromUserSettings(settings),
		ShellOptions: shellOptionsForOS(),
	}, nil
}

func (c *Controller) UpdateUserSettings(ctx context.Context, req dto.UpdateUserSettingsRequest) (dto.UserSettingsResponse, error) {
	settings, err := c.svc.UpdateUserSettings(ctx, &service.UpdateUserSettingsRequest{
		WorkspaceID:                 req.WorkspaceID,
		KanbanViewMode:              req.KanbanViewMode,
		WorkflowFilterID:            req.WorkflowFilterID,
		RepositoryIDs:               req.RepositoryIDs,
		InitialSetupComplete:        req.InitialSetupComplete,
		PreferredShell:              req.PreferredShell,
		DefaultEditorID:             req.DefaultEditorID,
		EnablePreviewOnClick:        req.EnablePreviewOnClick,
		ChatSubmitKey:               req.ChatSubmitKey,
		ReviewAutoMarkOnScroll:      req.ReviewAutoMarkOnScroll,
		ShowReleaseNotification:     req.ShowReleaseNotification,
		ReleaseNotesLastSeenVersion: req.ReleaseNotesLastSeenVersion,
		LspAutoStartLanguages:       req.LspAutoStartLanguages,
		LspAutoInstallLanguages:     req.LspAutoInstallLanguages,
		LspServerConfigs:            req.LspServerConfigs,
		SavedLayouts:                req.SavedLayouts,
	})
	if err != nil {
		return dto.UserSettingsResponse{}, err
	}
	return dto.UserSettingsResponse{
		Settings:     dto.FromUserSettings(settings),
		ShellOptions: shellOptionsForOS(),
	}, nil
}

func shellOptionsForOS() []dto.ShellOption {
	switch runtime.GOOS {
	case "windows":
		return []dto.ShellOption{
			{Value: "auto", Label: "System default"},
			{Value: "pwsh.exe", Label: "PowerShell (pwsh)"},
			{Value: "powershell.exe", Label: "Windows PowerShell"},
			{Value: "cmd.exe", Label: "Command Prompt"},
			{Value: "custom", Label: "Custom"},
		}
	default:
		return []dto.ShellOption{
			{Value: "auto", Label: "System default"},
			{Value: "/bin/zsh", Label: "zsh"},
			{Value: "/bin/bash", Label: "bash"},
			{Value: "/bin/sh", Label: "sh"},
			{Value: "custom", Label: "Custom"},
		}
	}
}