<?php

declare(strict_types=1);

namespace App\Support\ReviewPacks;

use App\Models\ManagedEnvironment;
use App\Models\ReviewPack;
use App\Models\Workspace;

final class ReportThemeResolver
{
    public const string DEFAULT_ACCENT = 'teal';

    /**
     * @param  array<string, mixed>  $profile
     * @param  array<string, mixed>  $guidance
     * @param  array<string, mixed>  $evidenceBasis
     * @param  array<string, mixed>  $metrics
     * @return array{
     *   identity:array{prepared_by:string,prepared_for:string,generated_by:string,generated_at:mixed,accent:string,logo:null},
     *   layout:array{mode:string,appendix_prominence:string,section_order:list<string>,section_ranks:array<string,int>},
     *   kpi_strip:list<array{key:string,label:string,value:string,description:string}>
     * }
     */
    public static function resolve(
        ReviewPack $reviewPack,
        ManagedEnvironment $tenant,
        array $profile,
        array $guidance,
        array $evidenceBasis,
        array $metrics,
    ): array {
        $workspace = $tenant->workspace;

        return [
            'identity' => self::identityFor(
                $workspace instanceof Workspace ? $workspace->name : null,
                $tenant->name,
                $reviewPack->generated_at,
            ),
            'layout' => self::layoutForProfile($profile),
            'kpi_strip' => self::kpiStrip($guidance, $evidenceBasis, $metrics),
        ];
    }

    /**
     * @return array{prepared_by:string,prepared_for:string,generated_by:string,generated_at:mixed,accent:string,logo:null}
     */
    public static function identityFor(?string $workspaceName, ?string $environmentName, mixed $generatedAt = null): array
    {
        return [
            'prepared_by' => self::displayText($workspaceName, 'TenantPilot'),
            'prepared_for' => self::displayText($environmentName, __('localization.review.tenant')),
            'generated_by' => 'TenantPilot',
            'generated_at' => $generatedAt,
            'accent' => self::DEFAULT_ACCENT,
            'logo' => null,
        ];
    }

    /**
     * @param  array<string, mixed>  $profile
     * @return array{mode:string,appendix_prominence:string,section_order:list<string>,section_ranks:array<string,int>}
     */
    public static function layoutForProfile(array $profile): array
    {
        $profileKey = (string) ($profile['effective_key'] ?? ($profile['profile_key'] ?? ReportProfileRegistry::DEFAULT_PROFILE));

        [$mode, $appendixProminence, $sectionOrder] = match ($profileKey) {
            ReportProfileRegistry::CUSTOMER_EXECUTIVE => [
                'executive',
                'minimal',
                [
                    'executive_summary',
                    'profile',
                    'limitations',
                    'findings',
                    'governance_decisions',
                    'accepted_risks',
                    'evidence_basis',
                    'next_actions',
                    'disclosure',
                    'appendix',
                    'technical_details',
                ],
            ],
            ReportProfileRegistry::CUSTOMER_TECHNICAL => [
                'technical',
                'standard',
                [
                    'executive_summary',
                    'profile',
                    'evidence_basis',
                    'limitations',
                    'findings',
                    'governance_decisions',
                    'accepted_risks',
                    'next_actions',
                    'disclosure',
                    'appendix',
                    'technical_details',
                ],
            ],
            ReportProfileRegistry::AUDITOR_APPENDIX => [
                'auditor_appendix',
                'high',
                [
                    'profile',
                    'evidence_basis',
                    'disclosure',
                    'limitations',
                    'appendix',
                    'technical_details',
                    'executive_summary',
                    'findings',
                    'governance_decisions',
                    'accepted_risks',
                    'next_actions',
                ],
            ],
            default => [
                'internal',
                'standard',
                [
                    'executive_summary',
                    'profile',
                    'limitations',
                    'evidence_basis',
                    'findings',
                    'governance_decisions',
                    'accepted_risks',
                    'next_actions',
                    'disclosure',
                    'appendix',
                    'technical_details',
                ],
            ],
        };

        $sectionRanks = [];

        foreach ($sectionOrder as $rank => $sectionKey) {
            $sectionRanks[$sectionKey] = ($rank + 1) * 10;
        }

        return [
            'mode' => $mode,
            'appendix_prominence' => $appendixProminence,
            'section_order' => $sectionOrder,
            'section_ranks' => $sectionRanks,
        ];
    }

    /**
     * @param  array<string, mixed>  $guidance
     * @param  array<string, mixed>  $evidenceBasis
     * @param  array<string, mixed>  $metrics
     * @return list<array{key:string,label:string,value:string,description:string}>
     */
    public static function kpiStrip(array $guidance, array $evidenceBasis, array $metrics): array
    {
        return [
            [
                'key' => 'governance_status',
                'label' => __('localization.review.report_kpi_governance_status'),
                'value' => self::displayText($guidance['boundary_label'] ?? null, __('localization.review.unavailable')),
                'description' => self::displayText(
                    $guidance['primary_reason'] ?? null,
                    __('localization.review.report_summary_default_impact'),
                ),
            ],
            [
                'key' => 'evidence_coverage',
                'label' => __('localization.review.report_kpi_evidence_coverage'),
                'value' => self::displayText($evidenceBasis['label'] ?? null, __('localization.review.unavailable')),
                'description' => self::displayText($evidenceBasis['description'] ?? null, __('localization.review.report_evidence_missing_description')),
            ],
            [
                'key' => 'key_risks',
                'label' => __('localization.review.report_kpi_key_risks'),
                'value' => self::countValue($metrics['top_findings'] ?? null, (bool) ($metrics['top_findings_measured'] ?? false)),
                'description' => __('localization.review.report_kpi_key_risks_description'),
            ],
            [
                'key' => 'open_decisions',
                'label' => __('localization.review.report_kpi_open_decisions'),
                'value' => self::countValue($metrics['governance_decisions'] ?? null, (bool) ($metrics['governance_decisions_measured'] ?? false)),
                'description' => __('localization.review.report_kpi_open_decisions_description'),
            ],
        ];
    }

    private static function countValue(mixed $items, bool $measured): string
    {
        if (! $measured) {
            return __('localization.review.report_kpi_not_measured');
        }

        if (! is_array($items)) {
            return __('localization.review.unavailable');
        }

        return (string) count($items);
    }

    private static function displayText(mixed $value, string $fallback): string
    {
        if (! is_scalar($value) && $value !== null) {
            return $fallback;
        }

        $text = preg_replace('/\s+/', ' ', trim((string) $value));

        if (! is_string($text) || $text === '') {
            return $fallback;
        }

        return str_starts_with($text, 'localization.') ? $fallback : $text;
    }
}