<?php

namespace App\Livewire;

use Livewire\Component;
use Illuminate\Support\Facades\Auth;
use App\Models\Project;
use App\Models\Phase;
use App\Models\Layer;
use App\Models\Feature;
use App\Models\Inspection;
use App\Models\InspectionTemplate;
use App\Models\Issue;

class ProjectMap extends Component
{
    public Project $project;
    public $phases;
    public $activeLayers = [];  // Now stores Layer IDs (not Phase IDs)
    public $showLayerModal = false;

    // Editor properties
    public $selectedFeature = null;
    public $selectedPhaseId = null;
    public $editProgress = 0;
    public $editComment = '';
    public $editResponsible = '';
    public $editPhotos = [];
    public $formFullscreen = false;

    // Tab management
    public $activeTab = 'edit';
    public $allFeatures;
    public $allInspections;

    // Templates e inspecciones
    public $templates = [];
    public $selectedTemplateId = null;
    public $inspectionFormData = [];
    public $inspectionHistory = [];

    // Imágenes en mapa
    public $showFeatureImages = false;
    public $featureImageMarkers = [];

    // Filters
    public $filterStatus = '';
    public $filterResponsible = '';
    public $filterProgressMin = 0;
    public $filterProgressMax = 100;
    public $showFilters = false;

    // Inspection workflow
    public $inspectionResult = '';
    public $inspectionNotes = '';

    // Issues
    public $openIssuesCount = 0;

    // Inspection viewer
    public $viewingInspection = null;

    public function mount(Project $project)
    {
        $this->project = $project;
        $this->authorizeProjectAccess();

        $this->phases = $project->phases()->with([
            'layers' => fn($q) => $q->withCount('features'),
            'layers.features',
            'layers.features.images',
        ])->get();

        // Initialize activeLayers with ALL layer IDs (not phase IDs)
        $this->activeLayers = $this->phases
            ->flatMap(fn($p) => $p->layers->pluck('id'))
            ->map(fn($id) => (int) $id)
            ->toArray();

        $this->loadTemplates();

        $this->allFeatures = Feature::whereHas('layer.phase', function($q) use ($project) {
            $q->where('project_id', $project->id);
        })->with(['layer.phase', 'template'])->get();

        $this->allInspections = Inspection::where('project_id', $project->id)
            ->with(['feature.layer.phase', 'template', 'user'])
            ->orderBy('created_at', 'desc')
            ->get();

        $this->openIssuesCount = Issue::where('project_id', $project->id)
            ->where('status', 'open')
            ->count();
    }

    private function authorizeProjectAccess(): void
    {
        $user = Auth::user();
        if ($user->can('manage all')) return;
        if (!$this->project->users()->where('user_id', $user->id)->exists()) abort(403);
    }

    public function loadTemplates()
    {
        $this->templates = InspectionTemplate::where('project_id', $this->project->id)->get();
    }

    // ─── Layer / Phase visibility ────────────────────────────────────────────────

    public function toggleLayer($layerId)
    {
        $layerId = (int) $layerId;
        if (in_array($layerId, $this->activeLayers)) {
            $this->activeLayers = array_values(array_diff($this->activeLayers, [$layerId]));
        } else {
            $this->activeLayers[] = $layerId;
        }
        $this->dispatch('layersUpdated', $this->activeLayers);
    }

    public function togglePhase($phaseId)
    {
        $phase = $this->phases->find($phaseId);
        if (!$phase) return;
        $layerIds = $phase->layers->pluck('id')->map(fn($id) => (int) $id)->toArray();
        $allActive = !empty($layerIds) && collect($layerIds)->every(fn($id) => in_array($id, $this->activeLayers));
        if ($allActive) {
            $this->activeLayers = array_values(array_diff($this->activeLayers, $layerIds));
        } else {
            $this->activeLayers = array_values(array_unique(array_merge($this->activeLayers, $layerIds)));
        }
        $this->dispatch('layersUpdated', $this->activeLayers);
    }

    public function openLayerModal()  { $this->showLayerModal = true; }
    public function closeLayerModal() { $this->showLayerModal = false; }

    // ─── Filters ────────────────────────────────────────────────────────────────

    public function updatedFilterStatus()       { $this->applyFilters(); }
    public function updatedFilterResponsible()  { $this->applyFilters(); }
    public function updatedFilterProgressMin()  { $this->applyFilters(); }
    public function updatedFilterProgressMax()  { $this->applyFilters(); }

    public function applyFilters()
    {
        $filtered = $this->allFeatures->filter(function($f) {
            if ($this->filterStatus && $f->status !== $this->filterStatus) return false;
            if ($this->filterResponsible && !str_contains(strtolower($f->responsible ?? ''), strtolower($this->filterResponsible))) return false;
            if ($f->progress < $this->filterProgressMin || $f->progress > $this->filterProgressMax) return false;
            return true;
        });
        $this->dispatch('filtersChanged', $filtered->pluck('id')->values()->toArray());
    }

    public function clearFilters()
    {
        $this->filterStatus = '';
        $this->filterResponsible = '';
        $this->filterProgressMin = 0;
        $this->filterProgressMax = 100;
        $this->dispatch('filtersChanged', $this->allFeatures->pluck('id')->values()->toArray());
    }

    // ─── Feature status ─────────────────────────────────────────────────────────

    public function editFeatureStatus($status)
    {
        if (!$this->selectedFeature) return;
        $feature = Feature::with('layer.phase')->findOrFail($this->selectedFeature->id);
        if ($feature->layer->phase->project_id !== $this->project->id) abort(403);
        $feature->status = $status;
        if ($status === 'completed') $feature->progress = 100;
        if ($status === 'planned')   $feature->progress = 0;
        $feature->save();
        $this->selectedFeature = $feature;
        $this->editProgress = $feature->progress;
        $this->allFeatures = $this->allFeatures->map(fn($f) => $f->id === $feature->id ? $feature : $f);
        $this->dispatch('featureStatusChanged', $feature->id, $feature->status, $feature->status_color);
        $this->dispatch('notify', 'Estado actualizado');
    }

    public function updateProgress($featureId, $newProgress, $comment = null)
    {
        $feature = Feature::with('layer.phase')->findOrFail($featureId);
        $user = Auth::user();
        if (!$user->can('update progress')) {
            $this->dispatch('notify', 'Sin permisos');
            return;
        }
        if ($feature->layer->phase->project_id !== $this->project->id) abort(403);
        $feature->progress = min(100, max(0, $newProgress));
        $feature->save();
        $phase = $feature->layer->phase;
        $phase->progress_percent = $phase->features()->avg('progress') ?: 0;
        $phase->save();
        $phase->progressUpdates()->create([
            'user_id'          => $user->id,
            'progress_percent' => $phase->progress_percent,
            'comment'          => $comment,
        ]);
        $this->dispatch('progressUpdated', $featureId, $feature->progress);
        $this->dispatch('notify', 'Progreso actualizado');
        if ($this->selectedFeature && $this->selectedFeature->id == $featureId) {
            $this->selectedFeature->progress = $feature->progress;
            $this->editProgress = $feature->progress;
        }
    }

    public function selectFeature($featureId)
    {
        $this->selectedFeature = null;
        $feature = Feature::with(['template', 'layer.phase'])->find($featureId);
        if (!$feature) return;
        if ($feature->layer->phase->project_id !== $this->project->id) abort(403);

        $this->selectedFeature   = $feature;
        $this->selectedPhaseId   = $feature->layer->phase_id;
        $this->editProgress      = $feature->progress;
        $this->editResponsible   = $feature->responsible ?? '';
        $this->editPhotos        = $feature->properties['photos'] ?? [];
        $this->selectedTemplateId = $feature->template_id;
        $this->activeTab         = 'edit';

        $this->loadInspectionHistory();
        $this->resetInspectionForm();

        $this->dispatch('featureSelected', $featureId, $feature->name);
    }

    public function loadInspectionHistory()
    {
        if (!$this->selectedFeature) {
            $this->inspectionHistory = [];
            return;
        }
        $this->inspectionHistory = Inspection::where('feature_id', $this->selectedFeature->id)
            ->with('user', 'template')
            ->orderBy('created_at', 'desc')
            ->get();
    }

    public function resetInspectionForm()
    {
        $this->inspectionFormData = [];
        $this->inspectionResult   = '';
        $this->inspectionNotes    = '';
        if ($this->selectedTemplateId) {
            $template = InspectionTemplate::find($this->selectedTemplateId);
            if ($template) {
                foreach ($template->fields as $field) {
                    $this->inspectionFormData[$field['name']] = '';
                }
            }
        }
    }

    public function saveInspection()
    {
        if (!$this->selectedFeature || !$this->selectedTemplateId) {
            $this->dispatch('notify', 'Selecciona un elemento y un template.');
            return;
        }
        $feature = Feature::with('layer.phase')->find($this->selectedFeature->id);
        if (!$feature || $feature->layer->phase->project_id !== $this->project->id) abort(403);

        $this->validate(['selectedTemplateId' => 'required|exists:inspection_templates,id']);

        $template = InspectionTemplate::find($this->selectedTemplateId);
        foreach ($template->fields as $field) {
            if (($field['required'] ?? false) && empty($this->inspectionFormData[$field['name']])) {
                $this->dispatch('notify', "El campo {$field['label']} es obligatorio.");
                return;
            }
        }

        $inspection = Inspection::create([
            'project_id'        => $this->project->id,
            'layer_id'          => $this->selectedFeature->layer_id,
            'feature_id'        => $this->selectedFeature->id,
            'template_id'       => $this->selectedTemplateId,
            'user_id'           => auth()->id(),
            'inspector_user_id' => auth()->id(),
            'status'            => 'completed',
            'completed_at'      => now(),
            'result'            => $this->inspectionResult ?: null,
            'notes'             => $this->inspectionNotes ?: null,
            'data'              => $this->inspectionFormData,
        ]);

        if ($this->inspectionResult === 'fail') {
            Issue::create([
                'project_id'    => $this->project->id,
                'feature_id'    => $this->selectedFeature->id,
                'inspection_id' => $inspection->id,
                'title'         => 'Fallo en inspección: ' . ($template->name ?? 'Sin nombre'),
                'description'   => $this->inspectionNotes,
                'priority'      => 'high',
                'status'        => 'open',
                'reported_by'   => auth()->id(),
            ]);
            $this->openIssuesCount = Issue::where('project_id', $this->project->id)
                ->where('status', 'open')->count();
            $this->dispatch('notify', 'Inspección fallida — Issue creado automáticamente');
        } else {
            if (isset($this->inspectionFormData['progress'])) {
                $this->updateProgress($this->selectedFeature->id, (int)$this->inspectionFormData['progress'], 'Inspección registrada');
            }
            $this->dispatch('notify', 'Inspección guardada correctamente');
        }

        // Reload global list
        $this->allInspections = Inspection::where('project_id', $this->project->id)
            ->with(['feature.layer.phase', 'template', 'user'])
            ->orderBy('created_at', 'desc')
            ->get();

        $this->loadInspectionHistory();
        $this->resetInspectionForm();
    }

    public function assignTemplateToFeature($templateId)
    {
        if (!$this->selectedFeature) return;
        $template = InspectionTemplate::where('id', $templateId)
            ->where('project_id', $this->project->id)->first();
        if (!$template) abort(403);
        $feature = Feature::findOrFail($this->selectedFeature->id);
        $feature->template_id = $templateId;
        $feature->save();
        $this->selectedFeature    = $feature;
        $this->selectedTemplateId = $templateId;
        $this->resetInspectionForm();
        $this->dispatch('notify', 'Template asignado al elemento');
    }

    public function saveFeatureProgress()
    {
        if (!$this->selectedFeature) return;
        $feature = Feature::with('layer.phase')->findOrFail($this->selectedFeature->id);
        if ($feature->layer->phase->project_id !== $this->project->id) abort(403);
        $feature->progress    = min(100, max(0, (int)$this->editProgress));
        $feature->responsible = $this->editResponsible;
        $feature->save();
        $this->selectedFeature = $feature;
        $phase = $feature->layer->phase;
        $phase->progress_percent = $phase->features()->avg('progress') ?: 0;
        $phase->save();
        $this->dispatch('progressUpdated', $phase->id, $phase->progress_percent);
        $this->dispatch('notify', 'Progreso guardado');
    }

    public function onTemplateChange()
    {
        $this->resetInspectionForm();
    }

    // ─── Inspection viewer ───────────────────────────────────────────────────────

    public function viewInspection($id)
    {
        $ins = Inspection::where('project_id', $this->project->id)
            ->with(['feature.layer.phase', 'template', 'user'])
            ->find($id);
        if (!$ins) return;
        $this->viewingInspection = [
            'id'            => $ins->id,
            'feature_name'  => $ins->feature?->name ?? '—',
            'layer_name'    => $ins->feature?->layer?->name ?? '—',
            'phase_name'    => $ins->feature?->layer?->phase?->name ?? '—',
            'template_name' => $ins->template?->name ?? '—',
            'user_name'     => $ins->user?->name ?? '—',
            'date'          => $ins->created_at->format('d/m/Y H:i'),
            'status'        => $ins->status,
            'result'        => $ins->result,
            'notes'         => $ins->notes,
            'data'          => $ins->data ?? [],
            'fields'        => $ins->template?->fields ?? [],
        ];
    }

    public function closeViewInspection()
    {
        $this->viewingInspection = null;
    }

    // ─── Feature images ──────────────────────────────────────────────────────────

    public function toggleFeatureImages()
    {
        $this->showFeatureImages = !$this->showFeatureImages;
        $this->loadFeatureImageMarkers();
        $this->dispatch('featureImagesToggled', $this->showFeatureImages, $this->featureImageMarkers);
    }

    public function loadFeatureImageMarkers()
    {
        if (!$this->showFeatureImages) { $this->featureImageMarkers = []; return; }
        $markers = [];
        foreach ($this->phases as $phase) {
            foreach ($phase->layers as $layer) {
                foreach ($layer->features as $feature) {
                    $image = $feature->images->first();
                    if ($image) {
                        $geo    = $feature->geometry;
                        $coords = null;
                        if ($geo && isset($geo['coordinates'])) {
                            if ($geo['type'] === 'Point') {
                                $coords = ['lat' => $geo['coordinates'][1], 'lng' => $geo['coordinates'][0]];
                            } elseif (in_array($geo['type'], ['Polygon', 'LineString'])) {
                                $coords = ['lat' => $geo['coordinates'][0][1] ?? null, 'lng' => $geo['coordinates'][0][0] ?? null];
                            }
                        }
                        if ($coords && $coords['lat'] && $coords['lng']) {
                            $markers[] = [
                                'feature_id' => $feature->id,
                                'name'       => $feature->name,
                                'lat'        => $coords['lat'],
                                'lng'        => $coords['lng'],
                                'image_url'  => $image->url,
                                'image_name' => $image->name,
                            ];
                        }
                    }
                }
            }
        }
        $this->featureImageMarkers = $markers;
    }

    public function toggleFullscreen()
    {
        $this->formFullscreen = !$this->formFullscreen;
        if (!$this->formFullscreen) $this->dispatch('mapResize');
    }

    public function setActiveTab($tab)
    {
        $this->activeTab = $tab;
    }

    public function render()
    {
        return view('livewire.projects.project-map', [
            'project' => $this->project,
            'phases'  => $this->phases,
        ]);
    }
}