package views

import (
	"fmt"
	"net/url"
	"strings"

	"xtablo-backend/internal/web/ui"
)

type TabloCardView struct {
	ID              string
	Name            string
	Status          string
	StatusLabel     string
	StatusClass     string
	StatusTone      string
	Progress        int
	CreatedAtLabel  string
	CardDateLabel   string
	ProgressLabel   string
	DeleteURL       string
	DeleteRequestURL string
	IconKind        string
	IconBgClass     string
	IconFgClass     string
	Accent          string
	Initial         string
}

type TablosPageViewModel struct {
	DisplayName  string
	View         string
	Query        string
	Status       string
	ModalOpen    bool
	FormName     string
	ErrorMessage string
	Tablos       []TabloCardView
}

func NewTablosPageViewModel(displayName string, view string, query string, status string, modalOpen bool, formName string, errorMessage string, tablos []TabloCardView) TablosPageViewModel {
	return TablosPageViewModel{
		DisplayName:  displayName,
		View:         normalizedView(view),
		Query:        strings.TrimSpace(query),
		Status:       normalizedStatus(status),
		ModalOpen:    modalOpen,
		FormName:     strings.TrimSpace(formName),
		ErrorMessage: strings.TrimSpace(errorMessage),
		Tablos:       tablos,
	}
}

func (vm TablosPageViewModel) IsGridView() bool {
	return vm.View != "list"
}

func (vm TablosPageViewModel) HasTablos() bool {
	return len(vm.Tablos) > 0
}

func (vm TablosPageViewModel) StatusHref(status string) string {
	values := vm.baseValues()
	values.Set("status", normalizedStatus(status))
	return "/tablos?" + values.Encode()
}

func (vm TablosPageViewModel) ViewHref(view string) string {
	values := vm.baseValues()
	values.Set("view", normalizedView(view))
	return "/tablos?" + values.Encode()
}

func (vm TablosPageViewModel) SearchHref() string {
	return "/tablos"
}

func (vm TablosPageViewModel) HiddenStateFields() map[string]string {
	return map[string]string{
		"view":   vm.View,
		"status": vm.Status,
		"q":      vm.Query,
	}
}

func (vm TablosPageViewModel) SearchValues() string {
	return fmt.Sprintf("view=%s&status=%s", vm.View, vm.Status)
}

func (vm TablosPageViewModel) CreateModalHref() string {
	values := vm.baseValues()
	values.Set("modal", "create")
	return "/tablos?" + values.Encode()
}

func (vm TablosPageViewModel) CloseModalHref() string {
	values := vm.baseValues()
	return "/tablos?" + values.Encode()
}

func (vm TablosPageViewModel) HasSearch() bool {
	return vm.Query != ""
}

func normalizedView(view string) string {
	if view == "list" {
		return "list"
	}
	return "grid"
}

func normalizedStatus(status string) string {
	switch status {
	case "todo", "in_progress", "done":
		return status
	default:
		return "all"
	}
}

func (vm TablosPageViewModel) baseValues() url.Values {
	values := url.Values{}
	values.Set("view", vm.View)
	values.Set("status", vm.Status)
	if vm.Query != "" {
		values.Set("q", vm.Query)
	}
	return values
}

func gridToggleClass(active bool) string {
	if active {
		return "flex items-center gap-2 pb-3 border-b-2 transition-colors border-purple-600 text-purple-600 dark:border-purple-400 dark:text-purple-400 font-semibold"
	}
	return "flex items-center gap-2 pb-3 border-b-2 transition-colors border-transparent text-gray-500 dark:text-gray-400 hover:text-gray-700 dark:hover:text-gray-200"
}

func listToggleClass(gridActive bool) string {
	return gridToggleClass(!gridActive)
}

func statusPillClass(active bool) string {
	if active {
		return "flex items-center gap-1.5 px-4 py-2.5 border rounded-[8px] font-medium text-sm transition-colors border-purple-600 bg-purple-50 dark:bg-purple-950/30 text-purple-600 dark:text-purple-400"
	}
	return "flex items-center gap-1.5 px-4 py-2.5 border rounded-[8px] font-medium text-sm transition-colors border-[#EAECF0] dark:border-gray-700 hover:bg-gray-50 dark:hover:bg-gray-800 text-gray-700 dark:text-gray-300"
}

func badgeVariantForTone(tone string) ui.BadgeVariant {
	switch tone {
	case "warning":
		return ui.BadgeVariantWarning
	case "success":
		return ui.BadgeVariantSuccess
	case "danger":
		return ui.BadgeVariantDanger
	default:
		return ui.BadgeVariantInfo
	}
}