<?php

namespace App\Http\Controllers;

use App\Models\InvestmentDossier;
use App\Models\InvestmentZone;
use App\Models\Opportunity;
use App\Services\InvestmentCatalogue;
use App\Services\InvestmentGeography;
use App\Services\InvestmentZoneAccess;
use App\Services\InvestmentZones;
use Illuminate\Http\JsonResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Validation\Rule;
use Inertia\Inertia;
use Inertia\Response;

class InvestmentZoneController extends Controller
{
    public function show(Request $request, InvestmentZones $zones, string $id): Response|JsonResponse
    {
        $management = $request->is('management/*', 'api/v2/investment/admin/*');
        $zone = ($management ? InvestmentZone::query() : $zones->visible())->findOrFail($id);
        $publicFields = ['id', 'code', 'category', 'name', 'name_en', 'description', 'description_en', 'province', 'district', 'validation_status', 'updated_at'];
        $source = DB::table('investment_legal_sources')->where('id', $zone->legal_source_id)->first(['title', 'url', 'diploma', 'article', 'competent_entity', 'valid_from', 'valid_until', 'version_no']);
        $operator = DB::table('organizations')->where('id', $zone->operator_id)->whereNull('deleted_at')
            ->when(! $management, fn ($q) => $q->where('data_classification', 'public'))->value('name');
        $field = ['zee' => 'zee_id', 'zfi' => 'zfi_id', 'industrial_park' => 'park_id'][$zone->category] ?? null;
        $opportunities = $field && ! $management ? app(InvestmentCatalogue::class)->query([$field => $id])->paginate(12)->withQueryString() : null;
        $related = collect();
        foreach (['cluster_id', 'corridor_id', 'project_id'] as $foreign) {
            $relations = $zones->links(true)->where('zl.zone_id', $id)->whereNotNull('zl.'.$foreign);
            $related = $related->merge(InvestmentPortfolioController::visible()->whereIn($foreign, $relations->select('zl.'.$foreign))->get());
        }
        $props = ['record' => $management ? $zone : $zone->only($publicFields), 'source' => $source, 'operator' => $operator, 'management' => $management,
            'related' => $related->unique('id')->values(),
            'relations' => $management ? DB::table('investment_zone_relations')->where('zone_id', $id)->orderByDesc('created_at')->limit(100)->get() : [],
            'geometries' => $management ? DB::table('investment_zone_geometries')->where('zone_id', $id)->orderByDesc('created_at')->limit(100)->get() : [],
            'targets' => $management ? ['opportunities' => Opportunity::orderBy('title')->limit(200)->get(['id', 'title']),
                'dossiers' => InvestmentDossier::orderBy('title')->limit(200)->get(['id', 'title', 'project_id', 'cluster_id', 'corridor_id'])] : null,
            'opportunities' => $opportunities,
            'legalSources' => $management ? DB::table('investment_legal_sources')->orderByDesc('created_at')->limit(100)->get() : [],
            'operators' => $management ? DB::table('organizations')->whereNull('deleted_at')->orderBy('name')->limit(200)->get(['id', 'name']) : [],
            'links' => $management ? DB::table('investment_zone_links')->where('zone_id', $id)->orderByDesc('created_at')->limit(100)->get() : [],
            'revisions' => $management ? DB::table('investment_zone_revisions')->where('zone_id', $id)->orderByDesc('version_no')->limit(20)->get(['version_no', 'action', 'sha256', 'created_at']) : []];

        return $request->is('api/*') ? response()->json($props) : Inertia::render('investment/zone', $props);
    }

    public function index(Request $request, InvestmentZones $zones): Response|JsonResponse
    {
        $filters = $request->validate(['category' => ['nullable', 'in:zee,zfi,industrial_park'], 'q' => ['nullable', 'string', 'max:120'], 'page' => ['nullable', 'integer', 'min:1'],
            'province_id' => ['nullable', 'uuid'], 'district_id' => ['nullable', 'uuid'], 'admin_post_id' => ['nullable', 'uuid'], 'locality_id' => ['nullable', 'uuid']]);
        $management = $request->is('management/*', 'api/v2/investment/admin/*');
        $query = $management ? InvestmentZone::query() : $zones->visible();
        $path = app(InvestmentGeography::class)->selection($filters);
        if ($path !== []) {
            $query->whereIn('primary_territory_id', app(InvestmentGeography::class)->descendants($path[array_key_last($path)]->id));
        }
        $rows = $query->when($filters['category'] ?? null, fn ($q, $v) => $q->where('category', $v))
            ->when($filters['q'] ?? null, fn ($q, $v) => $q->where(fn ($q) => $q->where('name', 'ilike', '%'.$v.'%')->orWhere('code', 'ilike', '%'.$v.'%')))
            ->orderBy('name')->orderBy('id')->paginate(12, $management ? ['*'] : ['id', 'code', 'name', 'name_en', 'category', 'province', 'district', 'description', 'description_en', 'validation_status', 'updated_at'])->withQueryString();
        $props = ['records' => $rows, 'filters' => $filters, 'management' => $management, 'territorySelection' => $path];

        return $request->is('api/*') ? response()->json($props) : Inertia::render('investment/zones', $props);
    }

    public function save(Request $request, InvestmentZones $zones, ?string $id = null): JsonResponse
    {
        $data = $request->validate(['version_no' => [$id ? 'required' : 'nullable', 'integer', 'min:1'],
            'code' => ['required', 'string', 'max:80', Rule::unique('investment_zones')->ignore($id)],
            'category' => ['required', 'in:zee,zfi,industrial_park,pending'], 'name' => ['required', 'string', 'max:255'],
            'name_en' => ['nullable', 'string', 'max:255'], 'description' => ['nullable', 'string', 'max:15000'],
            'description_en' => ['nullable', 'string', 'max:15000'], 'province' => ['nullable', 'string', 'max:100'], 'district' => ['nullable', 'string', 'max:100'],
            'operator_id' => ['nullable', 'uuid', Rule::exists('organizations', 'id')->whereNull('deleted_at')],
            'legal_source_id' => ['nullable', 'uuid', 'exists:investment_legal_sources,id']]);

        if (! $id && $request->has('province_id')) {
            $geo = $request->validate(['province_id' => ['nullable', 'uuid'], 'district_id' => ['nullable', 'uuid'], 'admin_post_id' => ['nullable', 'uuid'], 'locality_id' => ['nullable', 'uuid']]);
            $path = app(InvestmentGeography::class)->selection($geo);
            $data['primary_territory_id'] = $path === [] ? null : $path[array_key_last($path)]->id;
            $data['territory_version'] = $path === [] ? 0 : 1;
            $data['province'] = $path[0]->name ?? null;
            $data['district'] = $path[1]->name ?? null;
        }

        return response()->json($zones->save($id, $data, $request->user()->id), $id ? 200 : 201);
    }

    public function transition(Request $request, InvestmentZones $zones, string $id, string $action): JsonResponse
    {
        if ($action === 'publish') {
            InvestmentZoneAccess::requireRole($request->user(), 'publishers');
        }
        $data = $request->validate(['version_no' => ['required', 'integer', 'min:1']]);

        return response()->json($action === 'publish' ? $zones->publish($id, $data['version_no'], $request->user()->id)
            : $zones->suspend($id, $data['version_no'], $request->user()->id));
    }

    public function revisions(string $id): JsonResponse
    {
        InvestmentZone::findOrFail($id);

        return response()->json(DB::table('investment_zone_revisions')->where('zone_id', $id)->orderByDesc('version_no')->paginate(20, ['id', 'version_no', 'actor_id', 'action', 'sha256', 'created_at']));
    }
}