<?php

namespace App\Http\Controllers;

use App\Http\Requests\UpdateMedicalReportSheetRequest;
use App\Http\Requests\UpdateMedicalReportStructuredTemplateRequest;
use App\Http\Requests\UpsertMedicalReportFormTemplateRequest;
use App\Models\HospitalUnit;
use App\Models\MedicalReport;
use App\Models\MedicalReportFormTemplate;
use App\Support\MedicalReport\EconomistWorkbook;
use App\Support\MedicalReport\FormTemplateBuilderPage;
use App\Support\MedicalReport\ReportWorkbook;
use App\Support\MedicalReport\StructuredTemplateRegistry;
use App\Support\MedicalReport\TemplateWorkbook;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Inertia\Inertia;
use Inertia\Response;

class MedicalReportController extends Controller
{
    public function index(): RedirectResponse
    {
        $medicalReport = MedicalReport::query()->firstOrCreate(
            ['year' => 2026],
            [
                'name' => 'МЕД 2026',
                'input_overrides' => [],
            ],
        );

        return to_route('medical-reports.show', $medicalReport);
    }

    public function show(
        Request $request,
        MedicalReport $medicalReport,
        ReportWorkbook $reportWorkbook,
        TemplateWorkbook $templateWorkbook,
    ): Response {
        $departmentKeys = array_map(
            fn (array $department): string => $department['key'],
            $templateWorkbook->departments(),
        );
        $selectedDepartment = $request->string('department')->toString();
        $selectedDepartment = in_array($selectedDepartment, $departmentKeys, true)
            ? $selectedDepartment
            : ($departmentKeys[0] ?? null);

        $pageData = $reportWorkbook->pageData(
            $medicalReport,
            $selectedDepartment,
            $request->string('sheet')->toString(),
        );

        return Inertia::render('medical-reports/Show', $pageData);
    }

    public function update(
        UpdateMedicalReportSheetRequest $request,
        MedicalReport $medicalReport,
        TemplateWorkbook $templateWorkbook,
    ): RedirectResponse {
        $validated = $request->validated();
        $departmentKey = $validated['department'];
        $sheetKey = $validated['sheet'];
        $allowedCoordinates = array_map(
            fn (array $field): string => $field['coordinate'],
            $templateWorkbook->sheet($sheetKey)['fields_by_department'][$departmentKey] ?? [],
        );

        $cleanValues = collect($validated['values'])
            ->filter(fn (mixed $value, string $coordinate): bool => in_array($coordinate, $allowedCoordinates, true))
            ->map(fn (mixed $value): string => trim((string) $value))
            ->filter(fn (string $value): bool => $value !== '')
            ->all();

        $inputOverrides = $medicalReport->input_overrides ?? [];
        $inputOverrides[$departmentKey] ??= [];
        $inputOverrides[$departmentKey][$sheetKey] = $cleanValues;

        $medicalReport->update([
            'input_overrides' => $inputOverrides,
        ]);

        return to_route('medical-reports.show', [
            'medicalReport' => $medicalReport,
            'department' => $departmentKey,
            'sheet' => $sheetKey,
        ]);
    }

    public function updateStructured(
        UpdateMedicalReportStructuredTemplateRequest $request,
        MedicalReport $medicalReport,
        StructuredTemplateRegistry $structuredTemplateRegistry,
    ): RedirectResponse {
        $validated = $request->validated();
        $departmentKey = $validated['department'];
        $templateKey = $validated['template_key'];
        $template = $structuredTemplateRegistry->templateForDepartment($departmentKey);
        $inputOverrides = $medicalReport->input_overrides ?? [];
        $inputOverrides['structured_departments'] ??= [];
        $inputOverrides['structured_departments'][$departmentKey] ??= [];

        if (isset($template['sections']) && is_array($template['sections'])) {
            $sections = collect($template['sections'])
                ->mapWithKeys(function (array $section) use ($validated): array {
                    $fieldKeys = collect($section['fields'] ?? [])
                        ->pluck('key')
                        ->filter(fn (mixed $value): bool => is_string($value))
                        ->values();
                    $entries = collect($validated['sections'][$section['key']]['entries'] ?? [])
                        ->map(function (array $entry) use ($fieldKeys): array {
                            return $fieldKeys
                                ->mapWithKeys(fn (string $fieldKey): array => [
                                    $fieldKey => trim((string) ($entry[$fieldKey] ?? '')),
                                ])
                                ->all();
                        })
                        ->filter(fn (array $entry): bool => collect($entry)->some(
                            fn (string $value): bool => $value !== ''
                        ))
                        ->values()
                        ->all();

                    return [
                        $section['key'] => [
                            'entries' => $entries,
                        ],
                    ];
                })
                ->all();

            $inputOverrides['structured_departments'][$departmentKey][$templateKey] = [
                'sections' => $sections,
            ];
        } else {
            $fieldKeys = collect($template['fields'] ?? [])
                ->pluck('key')
                ->filter(fn (mixed $value): bool => is_string($value))
                ->values();
            $entries = collect($validated['entries'])
                ->map(function (array $entry) use ($fieldKeys): array {
                    return $fieldKeys
                        ->mapWithKeys(fn (string $fieldKey): array => [
                            $fieldKey => trim((string) ($entry[$fieldKey] ?? '')),
                        ])
                        ->all();
                })
                ->filter(fn (array $entry): bool => collect($entry)->some(
                    fn (string $value): bool => $value !== ''
                ))
                ->values()
                ->all();

            $inputOverrides['structured_departments'][$departmentKey][$templateKey] = [
                'entries' => $entries,
            ];
        }

        $medicalReport->update([
            'input_overrides' => $inputOverrides,
        ]);

        return to_route('medical-reports.show', [
            'medicalReport' => $medicalReport,
            'department' => $departmentKey,
        ]);
    }

    public function economists(
        MedicalReport $medicalReport,
        EconomistWorkbook $economistWorkbook,
    ): Response {
        return Inertia::render('medical-reports/Economists', $economistWorkbook->pageData($medicalReport));
    }

    public function builder(
        Request $request,
        MedicalReport $medicalReport,
        FormTemplateBuilderPage $formTemplateBuilderPage,
        TemplateWorkbook $templateWorkbook,
    ): Response {
        $departmentKeys = array_map(
            fn (array $department): string => $department['key'],
            $templateWorkbook->departments(),
        );
        $selectedDepartment = $request->string('department')->toString();
        $selectedDepartment = in_array($selectedDepartment, $departmentKeys, true)
            ? $selectedDepartment
            : ($departmentKeys[0] ?? null);

        return Inertia::render(
            'medical-reports/Builder',
            $formTemplateBuilderPage->pageData($medicalReport, $selectedDepartment),
        );
    }

    public function upsertBuilder(
        UpsertMedicalReportFormTemplateRequest $request,
        MedicalReport $medicalReport,
    ): RedirectResponse {
        $validated = $request->validated();
        $departmentKey = $validated['department'];
        $hospitalUnitId = HospitalUnit::query()
            ->where('slug', $departmentKey)
            ->value('id');
        $schema = $validated['schema'];

        $normalizedSchema = [
            'title' => $schema['title'],
            'description' => $schema['description'] ?? '',
            'sections' => collect($schema['sections'])
                ->map(function (array $section): array {
                    return [
                        'key' => $section['key'],
                        'title' => $section['title'],
                        'economist_label' => $section['economist_label'] ?? '',
                        'fields' => collect($section['fields'])
                            ->map(fn (array $field): array => [
                                'key' => $field['key'],
                                'label' => $field['label'],
                                'type' => $field['type'],
                            ])
                            ->values()
                            ->all(),
                        'export_metrics' => collect($section['export_metrics'] ?? [])
                            ->map(fn (array $metric): array => [
                                'key' => $metric['key'],
                                'label' => $metric['label'],
                                'source_field' => $metric['source_field'],
                                'aggregation' => $metric['aggregation'],
                                'analysis_column' => $metric['analysis_column'] ?? null,
                                'row_mode' => $metric['row_mode'] ?? null,
                                'target_unit_slug' => $metric['target_unit_slug'] ?? null,
                            ])
                            ->values()
                            ->all(),
                        'default_entries' => collect($section['default_entries'] ?? [])
                            ->map(fn (array $entry): array => collect($entry)
                                ->map(fn (mixed $value): string => trim((string) $value))
                                ->all())
                            ->values()
                            ->all(),
                    ];
                })
                ->values()
                ->all(),
        ];

        $template = MedicalReportFormTemplate::query()
            ->where(function ($query) use ($hospitalUnitId, $departmentKey): void {
                if ($hospitalUnitId !== null) {
                    $query->where('hospital_unit_id', $hospitalUnitId)
                        ->orWhere('department_key', $departmentKey);

                    return;
                }

                $query->where('department_key', $departmentKey);
            })
            ->first() ?? new MedicalReportFormTemplate;

        $template->fill([
            'hospital_unit_id' => $hospitalUnitId,
            'name' => $validated['name'],
            'description' => $validated['description'] ?? '',
            'department_key' => $departmentKey,
            'schema' => $normalizedSchema,
            'is_active' => true,
        ]);
        $template->save();

        return to_route('medical-reports.builder', [
            'medicalReport' => $medicalReport,
            'department' => $departmentKey,
        ]);
    }
}