<?php

namespace App\Livewire\Admin;

use App\Models\Priority;
use App\Models\Status;
use App\Models\Subcategory;
use App\Models\Team;
use App\Models\Trigger;
use App\Models\TriggerEmailTemplate;
use App\Models\User;
use Illuminate\Support\Collection;
use Livewire\Attributes\Computed;
use Livewire\Component;

class Triggers extends Component
{
    public bool $formOpen = false;

    public ?int $editingId = null;

    public array $form = [
        'name' => '',
        'enabled' => true,
        'event' => 'ticket_created',
        'conditions' => [],
        'actions' => [],
    ];

    public bool $templateFormOpen = false;

    public ?int $editingTemplateId = null;

    public array $templateForm = ['name' => '', 'subject' => '', 'body' => ''];

    public static function eventLabels(): array
    {
        return [
            'ticket_created' => 'Zgłoszenie utworzone',
            'ticket_updated' => 'Zgłoszenie zaktualizowane (dowolne pole)',
            'status_changed' => 'Zmiana statusu',
            'priority_changed' => 'Zmiana priorytetu',
            'assignee_changed' => 'Zmiana przypisanego operatora',
            'team_changed' => 'Zmiana zespołu',
            'category_changed' => 'Zmiana kategorii',
            'comment_added' => 'Nowa wiadomość (publiczna)',
        ];
    }

    public static function fieldLabels(): array
    {
        return [
            'status_key' => 'Status',
            'priority_key' => 'Priorytet',
            'team_id' => 'Zespół',
            'subcategory_id' => 'Podkategoria',
            'assignee_id' => 'Operator przypisany',
            'customer_id' => 'Zgłaszający',
            'subject' => 'Temat',
            'body' => 'Treść',
        ];
    }

    public static function operatorLabels(): array
    {
        return [
            'equals' => 'jest równe',
            'not_equals' => 'jest różne od',
            'is_empty' => 'jest puste',
            'is_not_empty' => 'nie jest puste',
            'contains' => 'zawiera',
        ];
    }

    public static function actionTypeLabels(): array
    {
        return [
            'set_status' => 'Ustaw status',
            'set_priority' => 'Ustaw priorytet',
            'set_team' => 'Ustaw zespół',
            'set_assignee' => 'Ustaw operatora',
            'send_notification' => 'Wyślij powiadomienie e-mail',
        ];
    }

    #[Computed]
    public function triggers(): Collection
    {
        return Trigger::query()->orderBy('sort_order')->get();
    }

    #[Computed]
    public function statuses(): Collection
    {
        return Status::query()->orderBy('sort_order')->get();
    }

    #[Computed]
    public function priorities(): Collection
    {
        return Priority::query()->orderBy('sort_order')->get();
    }

    #[Computed]
    public function teams(): Collection
    {
        return Team::query()->orderBy('name')->get();
    }

    #[Computed]
    public function operators(): Collection
    {
        return User::query()->whereHas('roleAssignments', fn ($q) => $q->whereIn('key', ['operator', 'admin']))->orderBy('name')->get();
    }

    #[Computed]
    public function subcategories(): Collection
    {
        return Subcategory::query()->with('category')->get()
            ->sortBy(fn (Subcategory $s) => $s->category->name.' / '.$s->name, SORT_NATURAL | SORT_FLAG_CASE)
            ->values();
    }

    #[Computed]
    public function customers(): Collection
    {
        return User::query()->whereHas('roleAssignments', fn ($q) => $q->where('key', 'client'))->orderBy('name')->get();
    }

    #[Computed]
    public function emailTemplates(): Collection
    {
        return TriggerEmailTemplate::query()->orderBy('name')->get();
    }

    public function openForm(): void
    {
        $this->editingId = null;
        $this->form = ['name' => '', 'enabled' => true, 'event' => 'ticket_created', 'conditions' => [], 'actions' => []];
        $this->resetErrorBag();
        $this->formOpen = true;
    }

    public function editTrigger(int $id): void
    {
        $trigger = Trigger::query()->findOrFail($id);

        $this->editingId = $trigger->id;
        $this->form = [
            'name' => $trigger->name,
            'enabled' => $trigger->enabled,
            'event' => $trigger->event,
            'conditions' => $trigger->conditions,
            'actions' => $trigger->actions,
        ];
        $this->resetErrorBag();
        $this->formOpen = true;
    }

    public function closeForm(): void
    {
        $this->formOpen = false;
    }

    public function addCondition(): void
    {
        $this->form['conditions'][] = ['field' => Trigger::CONDITION_FIELDS[0], 'operator' => 'equals', 'value' => ''];
    }

    public function removeCondition(int $index): void
    {
        unset($this->form['conditions'][$index]);
        $this->form['conditions'] = array_values($this->form['conditions']);
    }

    public function addAction(): void
    {
        $this->form['actions'][] = ['type' => Trigger::ACTION_TYPES[0], 'value' => '', 'recipient' => 'client', 'email_template_id' => ''];
    }

    public function removeAction(int $index): void
    {
        unset($this->form['actions'][$index]);
        $this->form['actions'] = array_values($this->form['actions']);
    }

    public function moveActionUp(int $index): void
    {
        $this->swapFormActions($index, $index - 1);
    }

    public function moveActionDown(int $index): void
    {
        $this->swapFormActions($index, $index + 1);
    }

    protected function swapFormActions(int $a, int $b): void
    {
        if ($b < 0 || $b >= count($this->form['actions'])) {
            return;
        }

        [$this->form['actions'][$a], $this->form['actions'][$b]] = [$this->form['actions'][$b], $this->form['actions'][$a]];
    }

    public function submit(): void
    {
        $this->validate([
            'form.name' => ['required', 'string', 'max:255'],
            'form.event' => ['required', 'string', 'in:'.implode(',', Trigger::EVENTS)],
            'form.conditions' => ['array'],
            'form.conditions.*.field' => ['required', 'string', 'in:'.implode(',', Trigger::CONDITION_FIELDS)],
            'form.conditions.*.operator' => ['required', 'string', 'in:'.implode(',', Trigger::CONDITION_OPERATORS)],
            'form.actions' => ['required', 'array', 'min:1'],
            'form.actions.*.type' => ['required', 'string', 'in:'.implode(',', Trigger::ACTION_TYPES)],
        ]);

        $data = [
            'name' => $this->form['name'],
            'enabled' => (bool) $this->form['enabled'],
            'event' => $this->form['event'],
            'conditions' => array_values($this->form['conditions']),
            'actions' => array_values($this->form['actions']),
        ];

        if ($this->editingId) {
            Trigger::query()->findOrFail($this->editingId)->update($data);
        } else {
            $data['sort_order'] = (Trigger::query()->max('sort_order') ?? 0) + 1;
            Trigger::query()->create($data);
        }

        $this->formOpen = false;
        unset($this->triggers);
    }

    public function toggleEnabled(int $id): void
    {
        $trigger = Trigger::query()->findOrFail($id);
        $trigger->update(['enabled' => ! $trigger->enabled]);
        unset($this->triggers);
    }

    public function removeTrigger(int $id): void
    {
        Trigger::query()->findOrFail($id)->delete();
        unset($this->triggers);
    }

    public function moveUp(int $id): void
    {
        $this->swapAdjacentSortOrder($id, -1);
    }

    public function moveDown(int $id): void
    {
        $this->swapAdjacentSortOrder($id, 1);
    }

    protected function swapAdjacentSortOrder(int $id, int $direction): void
    {
        $ordered = $this->triggers;
        $index = $ordered->search(fn ($row) => $row->id === $id);
        $swapIndex = $index + $direction;

        if ($index === false || $swapIndex < 0 || $swapIndex >= $ordered->count()) {
            return;
        }

        $row = $ordered[$index];
        $neighbor = $ordered[$swapIndex];

        [$rowOrder, $neighborOrder] = [$row->sort_order, $neighbor->sort_order];
        $row->update(['sort_order' => $neighborOrder]);
        $neighbor->update(['sort_order' => $rowOrder]);

        unset($this->triggers);
    }

    // ===================== TEMPLATES (wyzwalaczy) =====================

    public function openTemplateForm(): void
    {
        $this->editingTemplateId = null;
        $this->templateForm = ['name' => '', 'subject' => '', 'body' => ''];
        $this->resetErrorBag();
        $this->templateFormOpen = true;
    }

    public function editTemplate(int $id): void
    {
        $template = TriggerEmailTemplate::query()->findOrFail($id);

        $this->editingTemplateId = $template->id;
        $this->templateForm = [
            'name' => $template->name,
            'subject' => $template->subject,
            'body' => $template->body,
        ];
        $this->resetErrorBag();
        $this->templateFormOpen = true;
    }

    public function closeTemplateForm(): void
    {
        $this->templateFormOpen = false;
    }

    public function setTemplateBodyDraft(string $value): void
    {
        $this->templateForm['body'] = $value;
    }

    public function submitTemplate(): void
    {
        $this->validate([
            'templateForm.name' => ['required', 'string', 'max:255'],
            'templateForm.subject' => ['required', 'string', 'max:255'],
            'templateForm.body' => ['required', 'string'],
        ]);

        if ($this->editingTemplateId) {
            TriggerEmailTemplate::query()->findOrFail($this->editingTemplateId)->update($this->templateForm);
        } else {
            TriggerEmailTemplate::query()->create($this->templateForm);
        }

        $this->templateFormOpen = false;
        unset($this->emailTemplates);
    }

    public function removeTemplate(int $id): void
    {
        TriggerEmailTemplate::query()->findOrFail($id)->delete();
        unset($this->emailTemplates);
    }

    public function render()
    {
        return view('livewire.admin.triggers');
    }
}