<?php

namespace App\Models;

use App\Support\OperationCatalog;
use App\Support\Operations\OperationRunFreshnessState;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Support\Arr;

class OperationRun extends Model
{
    use HasFactory;

    protected $guarded = [];

    protected $casts = [
        'summary_counts' => 'array',
        'failure_summary' => 'array',
        'context' => 'array',
        'started_at' => 'datetime',
        'completed_at' => 'datetime',
    ];

    protected static function booted(): void
    {
        static::creating(function (self $operationRun): void {
            if ($operationRun->workspace_id !== null) {
                return;
            }

            if ($operationRun->tenant_id === null) {
                return;
            }

            $tenant = Tenant::query()->whereKey((int) $operationRun->tenant_id)->first();

            if (! $tenant instanceof Tenant) {
                return;
            }

            if ($tenant->workspace_id === null) {
                return;
            }

            $operationRun->workspace_id = (int) $tenant->workspace_id;
        });
    }

    public function tenant(): BelongsTo
    {
        return $this->belongsTo(Tenant::class)->withTrashed();
    }

    public function workspace(): BelongsTo
    {
        return $this->belongsTo(Workspace::class);
    }

    public function user(): BelongsTo
    {
        return $this->belongsTo(User::class);
    }

    public function scopeActive(Builder $query): Builder
    {
        return $query->whereIn('status', ['queued', 'running']);
    }

    public function getSelectionHashAttribute(): ?string
    {
        $context = is_array($this->context) ? $this->context : [];

        return isset($context['selection_hash']) && is_string($context['selection_hash'])
            ? $context['selection_hash']
            : null;
    }

    public function setSelectionHashAttribute(?string $value): void
    {
        $context = is_array($this->context) ? $this->context : [];
        $context['selection_hash'] = $value;

        $this->context = $context;
    }

    /**
     * @return array<string, mixed>
     */
    public function getSelectionPayloadAttribute(): array
    {
        $context = is_array($this->context) ? $this->context : [];

        return Arr::only($context, [
            'policy_types',
            'categories',
            'include_foundations',
            'include_dependencies',
        ]);
    }

    /**
     * @param  array<string, mixed>|null  $value
     */
    public function setSelectionPayloadAttribute(?array $value): void
    {
        $context = is_array($this->context) ? $this->context : [];

        if (is_array($value)) {
            $context = array_merge($context, Arr::only($value, [
                'policy_types',
                'categories',
                'include_foundations',
                'include_dependencies',
            ]));
        }

        $this->context = $context;
    }

    public function getFinishedAtAttribute(): mixed
    {
        return $this->completed_at;
    }

    public function setFinishedAtAttribute(mixed $value): void
    {
        $this->completed_at = $value;
    }

    public function isGovernanceArtifactOperation(): bool
    {
        return OperationCatalog::isGovernanceArtifactOperation((string) $this->type);
    }

    public function supportsOperatorExplanation(): bool
    {
        return OperationCatalog::supportsOperatorExplanation((string) $this->type);
    }

    public function governanceArtifactFamily(): ?string
    {
        return OperationCatalog::governanceArtifactFamily((string) $this->type);
    }

    /**
     * @return array<string, mixed>
     */
    public function artifactResultContext(): array
    {
        $context = is_array($this->context) ? $this->context : [];
        $result = is_array($context['result'] ?? null) ? $context['result'] : [];

        return array_merge($context, ['result' => $result]);
    }

    public function relatedArtifactId(): ?int
    {
        return match ($this->governanceArtifactFamily()) {
            'baseline_snapshot' => is_numeric(data_get($this->context, 'result.snapshot_id'))
                ? (int) data_get($this->context, 'result.snapshot_id')
                : null,
            default => null,
        };
    }

    /**
     * @return array<string, mixed>
     */
    public function reconciliation(): array
    {
        $context = is_array($this->context) ? $this->context : [];
        $reconciliation = $context['reconciliation'] ?? null;

        return is_array($reconciliation) ? $reconciliation : [];
    }

    public function isLifecycleReconciled(): bool
    {
        return $this->reconciliation() !== [];
    }

    public function lifecycleReconciliationReasonCode(): ?string
    {
        $reasonCode = $this->reconciliation()['reason_code'] ?? null;

        return is_string($reasonCode) && trim($reasonCode) !== '' ? trim($reasonCode) : null;
    }

    public function freshnessState(): OperationRunFreshnessState
    {
        return OperationRunFreshnessState::forRun($this);
    }

    /**
     * @return array<string, mixed>
     */
    public function baselineGapEnvelope(): array
    {
        $context = is_array($this->context) ? $this->context : [];

        return match ((string) $this->type) {
            'baseline_compare' => is_array(data_get($context, 'baseline_compare.evidence_gaps'))
                ? data_get($context, 'baseline_compare.evidence_gaps')
                : [],
            'baseline_capture' => is_array(data_get($context, 'baseline_capture.gaps'))
                ? data_get($context, 'baseline_capture.gaps')
                : [],
            default => [],
        };
    }

    public function hasStructuredBaselineGapPayload(): bool
    {
        $subjects = $this->baselineGapEnvelope()['subjects'] ?? null;

        if (! is_array($subjects) || ! array_is_list($subjects) || $subjects === []) {
            return false;
        }

        foreach ($subjects as $subject) {
            if (! is_array($subject)) {
                return false;
            }

            foreach ([
                'policy_type',
                'subject_key',
                'subject_class',
                'resolution_path',
                'resolution_outcome',
                'reason_code',
                'operator_action_category',
                'structural',
                'retryable',
            ] as $key) {
                if (! array_key_exists($key, $subject)) {
                    return false;
                }
            }
        }

        return true;
    }

    public function hasLegacyBaselineGapPayload(): bool
    {
        $envelope = $this->baselineGapEnvelope();
        $byReason = is_array($envelope['by_reason'] ?? null) ? $envelope['by_reason'] : [];

        if (array_key_exists('policy_not_found', $byReason)) {
            return true;
        }

        $subjects = $envelope['subjects'] ?? null;

        if (! is_array($subjects)) {
            return false;
        }

        if (! array_is_list($subjects)) {
            return $subjects !== [];
        }

        if ($subjects === []) {
            return false;
        }

        return ! $this->hasStructuredBaselineGapPayload();
    }
}