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,
		StartupPage:                     req.StartupPage,
		WorkflowFilterID:                req.WorkflowFilterID,
		RepositoryIDs:                   req.RepositoryIDs,
		TasksListSort:                   req.TasksListSort,
		TasksListGroup:                  req.TasksListGroup,
		TasksListShowDetails:            req.TasksListShowDetails,
		InitialSetupComplete:            req.InitialSetupComplete,
		PreferredShell:                  req.PreferredShell,
		DefaultEditorID:                 req.DefaultEditorID,
		EnablePreviewOnClick:            req.EnablePreviewOnClick,
		ChatSubmitKey:                   req.ChatSubmitKey,
		ReviewAutoMarkOnScroll:          req.ReviewAutoMarkOnScroll,
		ConfirmTaskArchive:              req.ConfirmTaskArchive,
		UnreadDivider:                   req.UnreadDivider,
		AgentGeneratedTaskTitles:        req.AgentGeneratedTaskTitles,
		MCPTaskAgentProfileDefault:      req.MCPTaskAgentProfileDefault,
		ShowAnchoredPromptBar:           req.ShowAnchoredPromptBar,
		ShowScrollToLastPrompt:          req.ShowScrollToLastPrompt,
		ShowScrollToStart:               req.ShowScrollToStart,
		ShowTranscriptAutoScrollControl: req.ShowTranscriptAutoScrollControl,
		ShowReleaseNotification:         req.ShowReleaseNotification,
		ReleaseNotesLastSeenVersion:     req.ReleaseNotesLastSeenVersion,
		LspAutoStartLanguages:           req.LspAutoStartLanguages,
		LspAutoInstallLanguages:         req.LspAutoInstallLanguages,
		LspServerConfigs:                req.LspServerConfigs,
		LspStatusLocation:               req.LspStatusLocation,
		SavedLayouts:                    req.SavedLayouts,
		SidebarViews:                    req.SidebarViews,
		SidebarActiveViewID:             req.SidebarActiveViewID,
		SidebarDraft:                    req.SidebarDraft.ServiceValue(),
		SidebarTaskPrefs:                req.SidebarTaskPrefs,
		TaskCreateLastUsed:              req.TaskCreateLastUsed,
		JiraSavedViews:                  req.JiraSavedViews.ServiceValue(),
		JiraTaskPresets:                 req.JiraTaskPresets.ServiceValue(),
		GitHubSavedPresets:              req.GitHubSavedPresets.ServiceValue(),
		GitHubDefaultQueryPresets:       req.GitHubDefaultQueryPresets.ServiceValue(),
		GitLabSavedPresets:              req.GitLabSavedPresets.ServiceValue(),
		AzureDevOpsBrowsePreferences:    req.AzureDevOpsBrowsePreferences.ServiceValue(),
		DefaultUtilityAgentID:           req.DefaultUtilityAgentID,
		DefaultUtilityModel:             req.DefaultUtilityModel,
		KeyboardShortcuts:               req.KeyboardShortcuts,
		TerminalLinkBehavior:            req.TerminalLinkBehavior,
		TerminalFontFamily:              req.TerminalFontFamily,
		TerminalFontSize:                req.TerminalFontSize,
		ChangesPanelLayout:              req.ChangesPanelLayout,
		SystemMetricsDisplay:            systemMetricsDisplayPatch(req.SystemMetricsDisplay),
		AppStatusBarOrder:               req.AppStatusBarOrder,
		VoiceMode:                       req.VoiceMode,
	})
	if err != nil {
		return dto.UserSettingsResponse{}, err
	}
	return dto.UserSettingsResponse{
		Settings:     dto.FromUserSettings(settings),
		ShellOptions: shellOptionsForOS(),
	}, nil
}

func systemMetricsDisplayPatch(patch *dto.SystemMetricsDisplaySettingsPatch) *service.SystemMetricsDisplaySettingsPatch {
	if patch == nil {
		return nil
	}
	return &service.SystemMetricsDisplaySettingsPatch{
		ShowInTopbar: patch.ShowInTopbar,
		Simplified:   patch.Simplified,
	}
}

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"},
		}
	}
}